subject:(disturbance)

University of Nairobi

1. Wanyonyi, Stellah N. Effects of Habitat Disturbance on Distribution and Abundance of Papyrus Endemic Birds in Sio Port Swamp, Western Kenya .

Degree: 2016, University of Nairobi

URL: http://hdl.handle.net/11295/99679

► Papyrus swamps are found patchily around the shores of Lake Victoria mainly along river inflows. Elsewhere, this habitat is widely scattered with notable patches at… (more)

▼ Papyrus swamps are found patchily around the shores of Lake Victoria mainly along river inflows. Elsewhere, this habitat is widely scattered with notable patches at Lake Naivasha and Lake Jipe. Sio Port is one of Lake Victoria’s Cyperus papyrus swamp located at the mouth of River Sio, North of Lake Victoria on the border of Kenya with Uganda. It is an important bird area of Kenya supporting a wide range of birds; however, this swamp lacks formal protection. The swamp and its immediate surrounding have been encroached by forms of disturbances caused by human activities. This study investigated the different forms of habitat disturbance and their effect on the distribution and abundance of papyrus endemic birds. Data on bird counts, habitat quality and forms of disturbance were collected for a period of six months, in October 2013 to March 2014. Total bird counts were established using Timed Species Count (TSC) and playback call technique, done at every fixed point. The points were 50 m apart alternating left and right. At every fixed point count, the researcher waited for 1 minute, calls of the study species were played to elicit response of the secretive papyrus endemic birds; the number of birds of each species seen or heard only within a radius of 25 meters was recorded for the next 9 minutes before moving to the next point count. Habitat quality (height, density and level of maturity) was determined in 1 m2 plots along transverse transects. Opportunistic observations were made to establish forms of disturbance present during vegetation and bird surveys. Papyrus endemic birds were highly distributed in sites with pure papyrus (55.58%) than in sites with mixed vegetation (44.42%). The abundance of three out of the four endemic birds White-winged Swamp-warbler (F (1, 28) =7.376 p = 0.011), Papyrus Gonolek (F (1, 28) = 5.331, p = 0.029), and Northern Brown throated Weaver (F (1, 28) = 5.734, p = 0.024) was significantly different in mixed and pure papyrus sites. However, the abundance of Greater Swamp-warbler (F (1, 28) =2.718, p = 0.110) were not significantly different in mixed and pure papyrus sites in Sio Port swamp in the study period. Forms of habitat disturbance established were vegetation clearing and invasion by terrestrial and aquatic plants. 76.47% of papyrus vegetation were young and regenerating (0-2 m high), 19.65% were immature papyruses (2-4 m) whereas 3.88% were tall mature papyruses (4-6 m high). Abundance of papyrus endemic birds was negatively correlated with density of vegetation in the height range of 0-2 m (r = -0.018, p = 0.941) and 2-4 m (r = -0.054, p = 0.822), the correlation was not significant. Abundance of papyrus endemic birds was positively and significantly correlated with density of vegetation in the height range of 4-6 m (r = 0.465, p = 0.039), the correlation was significant. Regression equation produced by the relationship was y = 2.590x + 0.465, t = 2.227, p = 0.039. Thus, any change in papyrus density resulted to a change in the abundance of papyrus endemic birds. High level of…

Subjects/Keywords: Habitat Disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wanyonyi, S. N. (2016). Effects of Habitat Disturbance on Distribution and Abundance of Papyrus Endemic Birds in Sio Port Swamp, Western Kenya . (Thesis). University of Nairobi. Retrieved from http://hdl.handle.net/11295/99679

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wanyonyi, Stellah N. “Effects of Habitat Disturbance on Distribution and Abundance of Papyrus Endemic Birds in Sio Port Swamp, Western Kenya .” 2016. Thesis, University of Nairobi. Accessed September 22, 2019. http://hdl.handle.net/11295/99679.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wanyonyi, Stellah N. “Effects of Habitat Disturbance on Distribution and Abundance of Papyrus Endemic Birds in Sio Port Swamp, Western Kenya .” 2016. Web. 22 Sep 2019.

Vancouver:

Wanyonyi SN. Effects of Habitat Disturbance on Distribution and Abundance of Papyrus Endemic Birds in Sio Port Swamp, Western Kenya . [Internet] [Thesis]. University of Nairobi; 2016. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/11295/99679.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wanyonyi SN. Effects of Habitat Disturbance on Distribution and Abundance of Papyrus Endemic Birds in Sio Port Swamp, Western Kenya . [Thesis]. University of Nairobi; 2016. Available from: http://hdl.handle.net/11295/99679

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Gothenburg / Göteborgs Universitet

2. Svensson, J. Robin. Ecological disturbances: the good, the bad and the ugly.

Degree: 2010, University of Gothenburg / Göteborgs Universitet

URL: http://hdl.handle.net/2077/23772

► Abstract. This thesis focuses on the definitions, characterizations and quantifications of ecological disturbances, as well as hypotheses on their impacts on biological communities. The most… (more)

▼ Abstract. This thesis focuses on the definitions, characterizations and quantifications of ecological disturbances, as well as hypotheses on their impacts on biological communities. The most prominent model on effects of disturbance on diversity is the Intermediate Disturbance Hypothesis (IDH), which is utilized in management of national reserves, has received over 3300 citations and has been corroborated by a multitude of studies from terrestrial and aquatic systems. According to the predictions of the IDH, diversity is high at intermediate levels of disturbance due to coexistence of competitors and colonizers. At low levels of disturbance diversity will be low due to competitive exclusion and few species can persist at high levels of disturbance. In an extension of the IDH, the Dynamic Equilibrium Model (DEM) predicts that the effects of disturbance depend on the productivity of communities, because at high growth rates a stronger disturbance is required to counteract increased rates of competitive exclusion. The IDH and the DEM were tested in a field experiment on effects of physical disturbance (scraping) and productivity (nutrient availability) on hard-substratum assemblages in paper I, where the patterns predicted by the IDH, but not the DEM, were observed. This outcome shows the importance of the nature of productivity alterations, as the productivity treatment had a general positive effect on growth rates but only marginal effects on the dominant species, thereby leaving rates of competitive exclusion unaffected. In paper II I tested another extension of the IDH, which predicts that smaller, more frequent disturbances will have different effects on diversity compared to larger, less frequent disturbances. In this experiment I used two different regimes of disturbance, small and frequent vs. large and infrequent disturbances, while the overall rate (the product of area and frequency) was kept equal for both regimes. At the site where the IDH was supported, the regime with a large proportion of the area disturbed infrequently showed higher richness, due to a stronger decrease of dominants, compared to the regime with a small proportion disturbed frequently. In addition to these significant differences in diversity effects between different disturbance regimes, it may also matter what agent of disturbance that is causing the damage. In paper III I contrasted the effects of a physical disturbance (wave-action) to that of a biological disturbance (grazing), as well as their respective interactions with productivity in a multifactorial design tested on natural epilithic assemblages. The composition of assemblages and the total species richness was significantly affected by physical disturbance and interactively by biological disturbance and productivity. The algal richness was significantly affected by productivity and biological disturbance, whereas the invertebrate richness was affected by physical disturbance. The results show, for the first time, that biological disturbance and physical disturbance interact…

Subjects/Keywords: Disturbance; Diversity

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Svensson, J. R. (2010). Ecological disturbances: the good, the bad and the ugly. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/23772

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Svensson, J Robin. “Ecological disturbances: the good, the bad and the ugly.” 2010. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed September 22, 2019. http://hdl.handle.net/2077/23772.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Svensson, J Robin. “Ecological disturbances: the good, the bad and the ugly.” 2010. Web. 22 Sep 2019.

Vancouver:

Svensson JR. Ecological disturbances: the good, the bad and the ugly. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 2010. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/2077/23772.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Svensson JR. Ecological disturbances: the good, the bad and the ugly. [Thesis]. University of Gothenburg / Göteborgs Universitet; 2010. Available from: http://hdl.handle.net/2077/23772

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

3. McMullen, Laura E. Ecological responses to riverine floods and flow alteration.

Degree: PhD, Zoology, 2011, Oregon State University

URL: http://hdl.handle.net/1957/22831

► Floods are major disturbance events for riverine ecosystems, directly and indirectly impacting organisms and their habitat. In this study I investigated the role of riverine… (more)

Subjects/Keywords: disturbance ecology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

McMullen, L. E. (2011). Ecological responses to riverine floods and flow alteration. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/22831

Chicago Manual of Style (16^th Edition):

McMullen, Laura E. “Ecological responses to riverine floods and flow alteration.” 2011. Doctoral Dissertation, Oregon State University. Accessed September 22, 2019. http://hdl.handle.net/1957/22831.

MLA Handbook (7^th Edition):

McMullen, Laura E. “Ecological responses to riverine floods and flow alteration.” 2011. Web. 22 Sep 2019.

Vancouver:

McMullen LE. Ecological responses to riverine floods and flow alteration. [Internet] [Doctoral dissertation]. Oregon State University; 2011. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1957/22831.

Council of Science Editors:

McMullen LE. Ecological responses to riverine floods and flow alteration. [Doctoral Dissertation]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/22831

University of Minnesota

4. Anoszko, Elias. Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness.

Degree: PhD, Natural Resources Science and Management, 2018, University of Minnesota

URL: http://hdl.handle.net/11299/195399

► Under a warming climate, the Boundary Waters Canoe Area Wilderness (BWCAW) of Northern MN is expected to see an increase in the frequency of disturbances… (more)

▼ Under a warming climate, the Boundary Waters Canoe Area Wilderness (BWCAW) of Northern MN is expected to see an increase in the frequency of disturbances including wildfires and severe windstorms. While boreal forests such as those of the BWCAW are generally considered disturbance adapted, it is uncertain how changing disturbance regimes will impact these forests. We used a series of recent disturbances in the BWCAW ranging from areas affected by wind or fire only, to areas affected by wind followed by fire, or multiple fires, to examine how predicted changes in boreal disturbance regimes are likely to impact these forests. We found that multiple disturbances typically had greater cumulative disturbance severity than single disturbance events and in the case of wind+fire combinations also tended to burn with greater intensity, and fire severity relative to areas affected by a single fire only. While diversity-severity relationships varied in shape, we found that diversity was generally lower at high disturbance severity relative to moderate severities. Multiple disturbances had modestly reduced diversity relative to single disturbances, but this relationship varied depending on the spatial scale of inquiry. Despite only modest impacts on diversity, multiple disturbances did have a pronounced impact on succession and composition. Regardless of pre-disturbance composition, multiple disturbances resulted in succession to aspen and paper birch, with birch being more dominant in areas burned in late season fires and aspen more dominant in areas burned by early season fires. Stands subjected to single disturbance events exhibited multiple successional pathways and mix of forest types. Our results suggest that predicted changes in boreal disturbance regimes are likely to have minor impacts on woody plant diversity, but could adversely affect disturbance adverse species, and alter the age structure and composition of forests by reducing long-lived boreal conifers and increasing the dominance of aspen and paper birch.

Subjects/Keywords: disturbance; fire disturbance; fire ecology; multiple disturbances; succession; wind disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Anoszko, E. (2018). Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/195399

Chicago Manual of Style (16^th Edition):

Anoszko, Elias. “Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness.” 2018. Doctoral Dissertation, University of Minnesota. Accessed September 22, 2019. http://hdl.handle.net/11299/195399.

MLA Handbook (7^th Edition):

Anoszko, Elias. “Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness.” 2018. Web. 22 Sep 2019.

Vancouver:

Anoszko E. Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness. [Internet] [Doctoral dissertation]. University of Minnesota; 2018. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/11299/195399.

Council of Science Editors:

Anoszko E. Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness. [Doctoral Dissertation]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/195399

University of Georgia

5. Leach, Andrea Diann. Influence of microsite and salvage logging on post-windthrow recovery in three Southeastern U.S. forests.

Degree: MS, Plant Biology, 2003, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/leach_andrea_d_200305_ms

► Much research has been conducted on wind-disturbance in eastern United States forests, but little is known regarding the impact of post-windthrow salvage logging on forest… (more)

Subjects/Keywords: wind disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Leach, A. D. (2003). Influence of microsite and salvage logging on post-windthrow recovery in three Southeastern U.S. forests. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/leach_andrea_d_200305_ms

Chicago Manual of Style (16^th Edition):

Leach, Andrea Diann. “Influence of microsite and salvage logging on post-windthrow recovery in three Southeastern U.S. forests.” 2003. Masters Thesis, University of Georgia. Accessed September 22, 2019. http://purl.galileo.usg.edu/uga_etd/leach_andrea_d_200305_ms.

MLA Handbook (7^th Edition):

Leach, Andrea Diann. “Influence of microsite and salvage logging on post-windthrow recovery in three Southeastern U.S. forests.” 2003. Web. 22 Sep 2019.

Vancouver:

Leach AD. Influence of microsite and salvage logging on post-windthrow recovery in three Southeastern U.S. forests. [Internet] [Masters thesis]. University of Georgia; 2003. [cited 2019 Sep 22]. Available from: http://purl.galileo.usg.edu/uga_etd/leach_andrea_d_200305_ms.

Council of Science Editors:

Leach AD. Influence of microsite and salvage logging on post-windthrow recovery in three Southeastern U.S. forests. [Masters Thesis]. University of Georgia; 2003. Available from: http://purl.galileo.usg.edu/uga_etd/leach_andrea_d_200305_ms

Texas A&M University

6. Carr George, Catherine Elizabeth. The particpation and performance of students with emotional disturbance on state accountability assessment in reading.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-3169

► This study examined the participation rates and performance results of students with emotional disturbance (ED) in a statewide reading assessment. Public school districts in Texas… (more)

Subjects/Keywords: Emotional Disturbance; Assessment; Accountability

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Carr George, C. E. (2009). The particpation and performance of students with emotional disturbance on state accountability assessment in reading. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-3169

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Carr George, Catherine Elizabeth. “The particpation and performance of students with emotional disturbance on state accountability assessment in reading.” 2009. Thesis, Texas A&M University. Accessed September 22, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-3169.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Carr George, Catherine Elizabeth. “The particpation and performance of students with emotional disturbance on state accountability assessment in reading.” 2009. Web. 22 Sep 2019.

Vancouver:

Carr George CE. The particpation and performance of students with emotional disturbance on state accountability assessment in reading. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-3169.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Carr George CE. The particpation and performance of students with emotional disturbance on state accountability assessment in reading. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-3169

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

7. Van Diggelen, Amanda. Is Salinity Variability a Benthic Disturbance?.

Degree: 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/152864

► Estuaries are subjected to variable salinity regimes governed by variable freshwater inflow and tidal regimes. Estuaries are less saline near the river (source of fresh… (more)

▼ Estuaries are subjected to variable salinity regimes governed by variable freshwater inflow and tidal regimes. Estuaries are less saline near the river (source of fresh water); salinities increase towards the inlet of the adjacent sea or ocean. Freshwater inflow is a driver to the functioning of estuaries, and average salinity is usually measured to identify the effects of inflow. However, salinity variability could act as a disturbance by producing unstable habitats. The purpose of this research was to determine if salinity variance is an indicator of benthic disturbance, and therefore a driver of community stability. The macrofauna communities of the five most southern estuaries on the Texas coastline were analyzed using a long-term data set. The estuaries lie in a climatic gradient and have different long-term salinity dynamics, thus salinity variance within and between estuaries can be compared. Benthic diversity, evenness, and richness (i.e., total number of species) were calculated and compared to salinity average and salinity variance to determine the efficacy of each diversity measure for determining community changes within and between estuarine systems. Salinity variance, rather than salinity average, was found to be more correlated to benthic diversity for each estuarine system. Freshwater inflow acts as a benthic disturbance both within and between estuaries. As salinity variance decreased (i.e. reduced freshwater inflow) diversity levels of benthic communities increased, while areas with more freshwater inflow displayed lower levels of benthic diversity. These findings advance a general theory of diversity maintenance. When communities are not influenced by persistent stressors, such as salinity variance, multiple stages of succession may occur with more species available to occupy the resulting open niches, thereby increasing diversity. Advisors/Committee Members: Montagna, Paul (advisor), Withers, Kimberly (committee member), Pollack, Jennifer (committee member).

Subjects/Keywords: community stability; freshwater inflow; disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Van Diggelen, A. (2014). Is Salinity Variability a Benthic Disturbance?. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/152864

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Van Diggelen, Amanda. “Is Salinity Variability a Benthic Disturbance?.” 2014. Thesis, Texas A&M University. Accessed September 22, 2019. http://hdl.handle.net/1969.1/152864.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Van Diggelen, Amanda. “Is Salinity Variability a Benthic Disturbance?.” 2014. Web. 22 Sep 2019.

Vancouver:

Van Diggelen A. Is Salinity Variability a Benthic Disturbance?. [Internet] [Thesis]. Texas A&M University; 2014. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1969.1/152864.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van Diggelen A. Is Salinity Variability a Benthic Disturbance?. [Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/152864

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Royal Roads University

8. Penno, Jessica. Metric and power analysis for a biomonitoring program in Banff National Park, Alberta .

Degree: 2016, Royal Roads University

URL: http://hdl.handle.net/10170/868

► The purpose of this thesis is to inform a biomonitoring study in Banff National Park, Alberta, that will use benthic macroinvertebrates as a biological indicator… (more)

Subjects/Keywords: benthic macroinvertebrates; biomonitoring; disturbance; power

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Penno, J. (2016). Metric and power analysis for a biomonitoring program in Banff National Park, Alberta . (Thesis). Royal Roads University. Retrieved from http://hdl.handle.net/10170/868

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Penno, Jessica. “Metric and power analysis for a biomonitoring program in Banff National Park, Alberta .” 2016. Thesis, Royal Roads University. Accessed September 22, 2019. http://hdl.handle.net/10170/868.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Penno, Jessica. “Metric and power analysis for a biomonitoring program in Banff National Park, Alberta .” 2016. Web. 22 Sep 2019.

Vancouver:

Penno J. Metric and power analysis for a biomonitoring program in Banff National Park, Alberta . [Internet] [Thesis]. Royal Roads University; 2016. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10170/868.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Penno J. Metric and power analysis for a biomonitoring program in Banff National Park, Alberta . [Thesis]. Royal Roads University; 2016. Available from: http://hdl.handle.net/10170/868

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tasmania

9. Holderness-Roddam, B. The effects of domestic dogs (Canis familiaris) as a disturbance agent on the natural environment.

Degree: 2011, University of Tasmania

URL: https://eprints.utas.edu.au/12310/2/whole.pdf

► This study assesses the impact of domestic dogs on the natural environment. The principal issue investigated is that of disturbance and the consequences for native… (more)

Subjects/Keywords: domestic dogs; disturbance; environment; wildlife

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Holderness-Roddam, B. (2011). The effects of domestic dogs (Canis familiaris) as a disturbance agent on the natural environment. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/12310/2/whole.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Holderness-Roddam, B. “The effects of domestic dogs (Canis familiaris) as a disturbance agent on the natural environment.” 2011. Thesis, University of Tasmania. Accessed September 22, 2019. https://eprints.utas.edu.au/12310/2/whole.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Holderness-Roddam, B. “The effects of domestic dogs (Canis familiaris) as a disturbance agent on the natural environment.” 2011. Web. 22 Sep 2019.

Vancouver:

Holderness-Roddam B. The effects of domestic dogs (Canis familiaris) as a disturbance agent on the natural environment. [Internet] [Thesis]. University of Tasmania; 2011. [cited 2019 Sep 22]. Available from: https://eprints.utas.edu.au/12310/2/whole.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Holderness-Roddam B. The effects of domestic dogs (Canis familiaris) as a disturbance agent on the natural environment. [Thesis]. University of Tasmania; 2011. Available from: https://eprints.utas.edu.au/12310/2/whole.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Chicago

10. Weisling, Nina F. Experiences and Practices of General Education Teachers Supporting Students with Emotional Disturbance.

Degree: 2013, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/9799

► This study describes the classroom practices of middle school general education teachers working with students with and without emotional disturbance (ED), including the predictability of… (more)

▼ This study describes the classroom practices of middle school general education teachers working with students with and without emotional disturbance (ED), including the predictability of those teacher behaviors for both groups of students. The data collected in this study describe the ways in which the beliefs and experiences of this group of teachers aligns with their observed behaviors when working with students with and without ED. Seven seventh and eighth grade literacy, math, and social science general education teachers, and 14 seventh and eighth grade students with and without ED participated in this study. Teachers’ instructional and classroom management interactions with target students was coded across 600 minutes of systematic, direct observation. Descriptive statistics were calculated for each teacher, specific to the target students. Additionally, lag sequential analysis was run to identify conditional probabilities for specific teacher and student behaviors. Teachers also completed a single Likert survey about their beliefs when working with students with ED. Data from surveys and observations describe the ways in which teachers' beliefs and experiences align to their classroom behaviors. The results of this study show similar rates of opportunities to respond and use of instructional groupings, as well as low levels of teacher responses, for students with and without ED. Where teacher behavior are different for both groups of student—including rates of praise, use of corrective actions, and predictability of feedback—the patterns that emerge are mostly consistent with existing research: teachers used low levels of praise, are more likely to have negative interactions with students with ED, and have unpredictable feedback for students (Van Acker, Grant, & Henry, 1996; Wehby, Symons, & Shores, 1995). The data collected and analyzed in this study suggest that, for all students, what has proven successful in general education classrooms is not being effectively implemented. Implications for teacher practices and future research are also explored. Advisors/Committee Members: Cushing, Lisa (advisor).

Subjects/Keywords: emotional disturbance; teacher practices

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Weisling, N. F. (2013). Experiences and Practices of General Education Teachers Supporting Students with Emotional Disturbance. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/9799

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Weisling, Nina F. “Experiences and Practices of General Education Teachers Supporting Students with Emotional Disturbance.” 2013. Thesis, University of Illinois – Chicago. Accessed September 22, 2019. http://hdl.handle.net/10027/9799.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Weisling, Nina F. “Experiences and Practices of General Education Teachers Supporting Students with Emotional Disturbance.” 2013. Web. 22 Sep 2019.

Vancouver:

Weisling NF. Experiences and Practices of General Education Teachers Supporting Students with Emotional Disturbance. [Internet] [Thesis]. University of Illinois – Chicago; 2013. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10027/9799.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Weisling NF. Experiences and Practices of General Education Teachers Supporting Students with Emotional Disturbance. [Thesis]. University of Illinois – Chicago; 2013. Available from: http://hdl.handle.net/10027/9799

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

11. Eliason, Kevin Matthew. The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams.

Degree: MS, Biological Sciences, 2017, Virginia Tech

URL: http://hdl.handle.net/10919/77931

► The southern Appalachian forests of the United States are undergoing changes due to the death of hemlock trees attacked by the hemlock wooly adelgid. This… (more)

Subjects/Keywords: Benthic Macroinvertebrates; Riparian Disturbance; Rhododendron

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Eliason, K. M. (2017). The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/77931

Chicago Manual of Style (16^th Edition):

Eliason, Kevin Matthew. “The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams.” 2017. Masters Thesis, Virginia Tech. Accessed September 22, 2019. http://hdl.handle.net/10919/77931.

MLA Handbook (7^th Edition):

Eliason, Kevin Matthew. “The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams.” 2017. Web. 22 Sep 2019.

Vancouver:

Eliason KM. The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams. [Internet] [Masters thesis]. Virginia Tech; 2017. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10919/77931.

Council of Science Editors:

Eliason KM. The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams. [Masters Thesis]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/77931

12. Moon, Derek. Small mammals in disturbed tallgrass prairie landscapes.

Degree: MS, Department of Biology, 2012, Kansas State University

URL: http://hdl.handle.net/2097/13345

► Disturbance is defined as any discrete event that disrupts ecosystem, community, or population structure and changes resources, substrate availability, or the physical environment. Habitat use… (more)

▼ Disturbance is defined as any discrete event that disrupts ecosystem, community, or population structure and changes resources, substrate availability, or the physical environment. Habitat use by an organism is based on its perception of where to maximize its own fitness, and can be altered in response to disturbance-induced changes in resources, substrate, or physical features modified by disturbance. Disturbance-induced changes to vegetation structure reshape a small mammal’s surrounding physical environment and/or resources, and may influence its utilization of an area. Effective wildlife and resource management is dependent on a thorough understanding of how individual species and communities utilize their surroundings and how disturbance affects a species’ response to changes in its surroundings. We investigated seasonal habitat associations of three small mammal species and for overall species diversity across a gradient of military combat-vehicle disturbance intensities at the Fort Riley Military Reservation, Kansas. Deer mouse (Peromyscus maniculatus) abundance did not vary across a categorical gradient of disturbance created by military-combat vehicles, regardless of season. Western harvest mouse (Reithrodontomys megalotis) abundance was associated with more highly disturbed areas irrespective of season. Prairie vole (Microtus ochrogaster) abundance was associated with habitat that was less disturbed in the spring but more highly disturbed in the fall. Shannon diversity of the small mammal community was higher in the more highly disturbed areas regardless of season. This research shows that small mammals respond to disturbances created by military training with combat vehicles in a species-specific manner, and indicates that there may be differences in the effects of military training versus natural or agricultural disturbances on the abundance and diversity of small mammals. This is an important consideration given that the Department of Defense manages more than 12 million ha of land in the United States, and is charged under the Sikes Act with conserving natural resources on these lands, including biological diversity. Thus, the findings of other ecological research on the effects of disturbance on small mammals may not be directly applicable to the types of disturbances that occur on military lands, which underscores the need for further research on the specific effects of military-training activities on species’ responses. Advisors/Committee Members: Jack Cully, Jr..

Subjects/Keywords: Small mammal; Disturbance; Biology (0306)

4 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moon, D. (2012). Small mammals in disturbed tallgrass prairie landscapes. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/13345

Chicago Manual of Style (16^th Edition):

Moon, Derek. “Small mammals in disturbed tallgrass prairie landscapes.” 2012. Masters Thesis, Kansas State University. Accessed September 22, 2019. http://hdl.handle.net/2097/13345.

MLA Handbook (7^th Edition):

Moon, Derek. “Small mammals in disturbed tallgrass prairie landscapes.” 2012. Web. 22 Sep 2019.

Vancouver:

Moon D. Small mammals in disturbed tallgrass prairie landscapes. [Internet] [Masters thesis]. Kansas State University; 2012. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/2097/13345.

Council of Science Editors:

Moon D. Small mammals in disturbed tallgrass prairie landscapes. [Masters Thesis]. Kansas State University; 2012. Available from: http://hdl.handle.net/2097/13345

University of Waterloo

13. Liu, Yining. A Targeting Approach To Disturbance Rejection In Multi-Agent Systems.

Degree: 2012, University of Waterloo

URL: http://hdl.handle.net/10012/6841

► This thesis focuses on deadbeat disturbance rejection for discrete-time linear multi-agent systems. The multi-agent systems, on which Spieser and Shams’ decentralized deadbeat output regulation problem… (more)

Subjects/Keywords: Disturbance rejection; Multi-agent systems

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liu, Y. (2012). A Targeting Approach To Disturbance Rejection In Multi-Agent Systems. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6841

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Liu, Yining. “A Targeting Approach To Disturbance Rejection In Multi-Agent Systems.” 2012. Thesis, University of Waterloo. Accessed September 22, 2019. http://hdl.handle.net/10012/6841.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Liu, Yining. “A Targeting Approach To Disturbance Rejection In Multi-Agent Systems.” 2012. Web. 22 Sep 2019.

Vancouver:

Liu Y. A Targeting Approach To Disturbance Rejection In Multi-Agent Systems. [Internet] [Thesis]. University of Waterloo; 2012. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10012/6841.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Liu Y. A Targeting Approach To Disturbance Rejection In Multi-Agent Systems. [Thesis]. University of Waterloo; 2012. Available from: http://hdl.handle.net/10012/6841

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

14. Glasby, Mack. Assessing the impacts of forest disturbances on stand and individual tree growth in the Lake States.

Degree: MS, Natural Resources Science and Management, 2016, University of Minnesota

URL: http://hdl.handle.net/11299/182693

► Forest disturbances cause changes in site conditions and forest structure which in turn influences the species composition of the site. This study utilized Forest Inventory… (more)

Subjects/Keywords: Disturbance; Forestry; Growth; Lake States

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Glasby, M. (2016). Assessing the impacts of forest disturbances on stand and individual tree growth in the Lake States. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/182693

Chicago Manual of Style (16^th Edition):

Glasby, Mack. “Assessing the impacts of forest disturbances on stand and individual tree growth in the Lake States.” 2016. Masters Thesis, University of Minnesota. Accessed September 22, 2019. http://hdl.handle.net/11299/182693.

MLA Handbook (7^th Edition):

Glasby, Mack. “Assessing the impacts of forest disturbances on stand and individual tree growth in the Lake States.” 2016. Web. 22 Sep 2019.

Vancouver:

Glasby M. Assessing the impacts of forest disturbances on stand and individual tree growth in the Lake States. [Internet] [Masters thesis]. University of Minnesota; 2016. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/11299/182693.

Council of Science Editors:

Glasby M. Assessing the impacts of forest disturbances on stand and individual tree growth in the Lake States. [Masters Thesis]. University of Minnesota; 2016. Available from: http://hdl.handle.net/11299/182693

University of Waikato

15. de Groot, Neeltje, P.H.M. The extent of burial of the Rena Oil Spill within Bay of Plenty coastal sediments .

Degree: 2014, University of Waikato

URL: http://hdl.handle.net/10289/8648

► The grounding of the MV Rena on October 5th, 2011 caused 350-400 tons of heavy fuel oil to spill into the ocean. A significant portion… (more)

▼ The grounding of the MV Rena on October 5th, 2011 caused 350-400 tons of heavy fuel oil to spill into the ocean. A significant portion of the oil reached the Bay of Plenty coastline six days later. This thesis investigated the effectiveness of oil clean-up operations that involved spill response crew and some eight thousand volunteers. Previous oil spill studies discussed in literature, have established that spilled oil can mix with sediment beneath the beach surface. 26 Sediment cores averaging ~80cm in length were retrieved ~one year after the Rena oil spill at 12 locations between Waihi and Maketu and were chemically analysed to a depth of 40 cm (0-20 cm and 20-40 cm). GC/MS quantitative results concluded that polycyclic aromatic hydrocarbons (PAHs) were present in the sediment. However, only 7 of the 52 samples contained 4 of the 5 fingerprinted PAHs; phenanthrene, pyrene, benzo(a)anthracene and chrysene, that characterise the Rena oil, with naphthalene undetected in all of the 52 samples. Naphthalene degrades quickly due to its low molecular weight and commonly evaporates from the marine environment within the first few weeks of exposure. Therefore, the absence of naphthalene was anticipated. Variations of phenanthrene and pyrene were detected 27 other sediment samples at low, mid and high tide locations, in both surface 0-20 cm samples and the deeper 20-40 cm samples. Due to the absence of the most resilient PAHs benzo(a)anthracene and chrysene in the 27 samples characterise Rena oil, is likely that phenanthrene and pyrene have come from other hydrocarbon sources such as stormwater outfalls. Laboratory settling flask experiments demonstrated that heavy fuel oil formed droplets and would bind to sediment of both siliciclastic and bioclastic origin. Oil droplets would sink, float or stay suspended in the water column due to oil droplet density variations. Oil that bound to sand grains tended to sink and join the bottom sediments, and oil droplets that contained bubbles of water or air tended to float to the surface of the water column. Storms that occurred in the weeks after the initial Rena spill hindered oil clean-up operations and increased wave activity which potentially enabled oil to mix further into coastal sediments. The maximum depth of disturbance was recorded at Pukehina Beach at 28 cm during storm conditions which established that chemical analysis to a depth of 40 cm encompassed the maximum depth that oil could be mixed into the beach sediment in the intertidal zone. This study has set the foundations on understanding the geotechnical effects of spilled oil and coastal sediment interactions in the Bay of Plenty. The region would benefit from further depth of disturbance studies to assist in more efficient remediation of possible oil spills in the future. Advisors/Committee Members: de Lange, Willem P (advisor), Moon, Vicki G (advisor).

Subjects/Keywords: PAHs; depth of disturbance; Rena

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

de Groot, Neeltje, P. H. M. (2014). The extent of burial of the Rena Oil Spill within Bay of Plenty coastal sediments . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/8648

Chicago Manual of Style (16^th Edition):

de Groot, Neeltje, P H M. “The extent of burial of the Rena Oil Spill within Bay of Plenty coastal sediments .” 2014. Masters Thesis, University of Waikato. Accessed September 22, 2019. http://hdl.handle.net/10289/8648.

MLA Handbook (7^th Edition):

de Groot, Neeltje, P H M. “The extent of burial of the Rena Oil Spill within Bay of Plenty coastal sediments .” 2014. Web. 22 Sep 2019.

Vancouver:

de Groot, Neeltje PHM. The extent of burial of the Rena Oil Spill within Bay of Plenty coastal sediments . [Internet] [Masters thesis]. University of Waikato; 2014. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10289/8648.

Council of Science Editors:

de Groot, Neeltje PHM. The extent of burial of the Rena Oil Spill within Bay of Plenty coastal sediments . [Masters Thesis]. University of Waikato; 2014. Available from: http://hdl.handle.net/10289/8648

Colorado State University

16. Fleming, Jean L. Effects of bark beetle-fire disturbance interactions on post-disturbance forest regeneration, The.

Degree: MS(M.S.), Ecology, 2015, Colorado State University

URL: http://hdl.handle.net/10217/166952

► Disturbances in forested ecosystems create ecological legacies that can affect future disturbances and these disturbance interactions influence post-disturbance establishment. In addition, disturbances can become compounded… (more)

▼ Disturbances in forested ecosystems create ecological legacies that can affect future disturbances and these disturbance interactions influence post-disturbance establishment. In addition, disturbances can become compounded and cause drastic ecosystem changes including decreased post-disturbance establishment, regeneration of unexpected species assemblages, or shifts to alternative stable states. I studied the post-disturbance establishment of five tree species following two interacting disturbances, a bark beetle outbreak and a high-severity fire. The goal of my research was to identify the factors that influence post-disturbance seedling establishment, and to determine how bark beetle-fire interactions affect forest regeneration. I evaluated seedling establishment at 98 study sites across the Cow Creek fire in Rocky Mountain National Park. Two bark beetle species, mountain pine beetle (Dendroctonus ponderosae) and spruce beetle (Dendroctonus rufipennis), caused epidemic scale tree mortality in the five years before the fire. I created a Bayesian mixture model for each tree species to assess the independent variables that influenced the abundance of the species' establishment. The variables that influenced mean seedling abundance were different for each species. Forest age, distance to a seed source following the fire, and disturbance interactions affected the seedling abundance for most of the species. The presence of recent bark beetle activity had a measurable affect on post-disturbance establishment for three species. P. contorta and P. tremuloides mean abundance increased by a factor of 3.1 and 1.4, respectively, in areas with mountain pine beetle disturbance. The mean abundance of P. engelmannii seedlings was 3.8 times greater in areas where spruce beetle had caused tree mortality before the fire. This increase in seedling abundance in areas with bark beetle presence was independent of the other studied factors, including fire severity and elevation. The increased seeding abundance I recorded following bark beetle and fire disturbance suggests that interacting disturbances can increase the likelihood that forests will recover to their original species assemblages. The results of this study should be utilized to inform future forest management and to avoid unnecessary management action. Advisors/Committee Members: Sibold, Jason (advisor), Baron, Jill (committee member), Hobbs, N. Thompson (committee member).

Subjects/Keywords: Disturbance Interactions; Rocky Mountains; Disturbance; Subalpine Forest; Regeneration

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fleming, J. L. (2015). Effects of bark beetle-fire disturbance interactions on post-disturbance forest regeneration, The. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/166952

Chicago Manual of Style (16^th Edition):

Fleming, Jean L. “Effects of bark beetle-fire disturbance interactions on post-disturbance forest regeneration, The.” 2015. Masters Thesis, Colorado State University. Accessed September 22, 2019. http://hdl.handle.net/10217/166952.

MLA Handbook (7^th Edition):

Fleming, Jean L. “Effects of bark beetle-fire disturbance interactions on post-disturbance forest regeneration, The.” 2015. Web. 22 Sep 2019.

Vancouver:

Fleming JL. Effects of bark beetle-fire disturbance interactions on post-disturbance forest regeneration, The. [Internet] [Masters thesis]. Colorado State University; 2015. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10217/166952.

Council of Science Editors:

Fleming JL. Effects of bark beetle-fire disturbance interactions on post-disturbance forest regeneration, The. [Masters Thesis]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/166952

Dalhousie University

17. Mason, Rebecca. An Evaluation of Restoration Techniques for a Small Scale All-Terrain-Vehicle Disturbance in the Lake Charlotte Peatland.

Degree: Master of Applied Science, Department of Process Engineering and Applied Science, 2010, Dalhousie University

URL: http://hdl.handle.net/10222/13096

► A peatland near Lake Charlotte, Nova Scotia that had been damaged by all-terrain vehicles (ATVs) was identified as a compensatory mitigation site. Restoration practices commonly… (more)

Subjects/Keywords: peatland restoration; peatland disturbance; restoration techniques

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mason, R. (2010). An Evaluation of Restoration Techniques for a Small Scale All-Terrain-Vehicle Disturbance in the Lake Charlotte Peatland. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/13096

Chicago Manual of Style (16^th Edition):

Mason, Rebecca. “An Evaluation of Restoration Techniques for a Small Scale All-Terrain-Vehicle Disturbance in the Lake Charlotte Peatland.” 2010. Masters Thesis, Dalhousie University. Accessed September 22, 2019. http://hdl.handle.net/10222/13096.

MLA Handbook (7^th Edition):

Mason, Rebecca. “An Evaluation of Restoration Techniques for a Small Scale All-Terrain-Vehicle Disturbance in the Lake Charlotte Peatland.” 2010. Web. 22 Sep 2019.

Vancouver:

Mason R. An Evaluation of Restoration Techniques for a Small Scale All-Terrain-Vehicle Disturbance in the Lake Charlotte Peatland. [Internet] [Masters thesis]. Dalhousie University; 2010. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10222/13096.

Council of Science Editors:

Mason R. An Evaluation of Restoration Techniques for a Small Scale All-Terrain-Vehicle Disturbance in the Lake Charlotte Peatland. [Masters Thesis]. Dalhousie University; 2010. Available from: http://hdl.handle.net/10222/13096

University of Alberta

18. Nordell, Cameron J. Ferruginous Hawk (Buteo regalis) responses to human disturbance during the breeding season.

Degree: MS, Department of Biological Sciences, 2016, University of Alberta

URL: https://era.library.ualberta.ca/files/c5d86p026n

► The expansion of the human footprint across the world is increasing the number of interactions between humans and wildlife. Many studies have quantified wildlife behavioural… (more)

▼ The expansion of the human footprint across the world is increasing the number of interactions between humans and wildlife. Many studies have quantified wildlife behavioural responses to humans, as this is an active area of research with practical implications for species conservation. Animal behaviour may be influenced by the properties of the human disturbance itself, the environment in which the interaction occurs, and the individual's past experience, but these potentially important factors have rarely been evaluated. Furthermore, it is unclear how individuals behave through time after a human disturbance. In southern Alberta and Saskatchewan, I quantified flight initiation from the nest by Ferruginous Hawks (Buteo regalis) in response to approaching investigators and used digital video systems to quantify their behaviour following investigator departure. In Chapter 2 I studied the flight initiation distance (FID), the distance at which flight is initiated from the nest in response to an approaching threat, by adult Ferruginous Hawks. We used FID to quantify the relative probability of flight during a given approach. Probability of flight was related to the type of approach by investigators, the anthropogenic landscape around the nest, and the number of previous visits by investigators. Approaches by humans on foot resulted in a greater probability of flight than those in a vehicle. Approaches while driving on private access roads, which are roads used infrequently by vehicles, were associated with increased probability of flight relative to other road types. Probability of flight was negatively related to an index for the number of vehicles passing near the nest, and increased as the number of previous investigator approaches to the nest increased. Chapter 2 highlights the dynamic and complex nature of the decision to initiate flight from the nest and provides insight as to why probability of flight varies within a species. Having explored factors influencing the Ferruginous Hawk's decision to initiate flight in response to human disturbance in Chapter 2, Chapter 3 focused on the behavioural consequence through time after being disturbed by humans. Here, I used digital video footage of Ferruginous Hawk nests to document behaviour at the nest of adult males and females up to 12 hrs following an investigator disturbance, and test two non-exclusive hypotheses that may explain differences in behaviour relative to undisturbed control periods. On average, across the 12-hr sample period, female Ferruginous Hawks spent significantly less time on the nest following investigator disturbance compared to controls, but individual variation was high. Delivery of prey items to the nest was not significantly different between disturbed and control sample periods for the same nests. Time on nest was initially lower for disturbed females than for controls but became more similar over the span of the 12-hr sample. Age of nestlings and number of nestlings were important, as female time on the nest returned to control-levels more…

Subjects/Keywords: flight initiation distance; human disturbance; raptor behaviour

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nordell, C. J. (2016). Ferruginous Hawk (Buteo regalis) responses to human disturbance during the breeding season. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/c5d86p026n

Chicago Manual of Style (16^th Edition):

Nordell, Cameron J. “Ferruginous Hawk (Buteo regalis) responses to human disturbance during the breeding season.” 2016. Masters Thesis, University of Alberta. Accessed September 22, 2019. https://era.library.ualberta.ca/files/c5d86p026n.

MLA Handbook (7^th Edition):

Nordell, Cameron J. “Ferruginous Hawk (Buteo regalis) responses to human disturbance during the breeding season.” 2016. Web. 22 Sep 2019.

Vancouver:

Nordell CJ. Ferruginous Hawk (Buteo regalis) responses to human disturbance during the breeding season. [Internet] [Masters thesis]. University of Alberta; 2016. [cited 2019 Sep 22]. Available from: https://era.library.ualberta.ca/files/c5d86p026n.

Council of Science Editors:

Nordell CJ. Ferruginous Hawk (Buteo regalis) responses to human disturbance during the breeding season. [Masters Thesis]. University of Alberta; 2016. Available from: https://era.library.ualberta.ca/files/c5d86p026n

Texas A&M University

19. Krustchinsky, Adam R. Post-fire recovery and successional dynamics of an old growth red spruce forest in the southern Appalachian Mountains.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1316

► Red spruce is a shade-tolerant conifer whose distribution and abundance reflect Quaternary climate history as well as natural and anthropogenic disturbances. This species once extended… (more)

▼ Red spruce is a shade-tolerant conifer whose distribution and abundance reflect Quaternary climate history as well as natural and anthropogenic disturbances. This species once extended further south than its present localities, because of natural and anthropogenic disturbances such as logging, windthrow, and fire. Little is known about the disturbance regime of this species, because long term stand dynamics are difficult to obtain. This-long lived species is hypothesized to be suffering a decline in radial growth, density and abundance at the present time. Recent research suggests pollution, biotic stresses, climate change and natural stand dynamics are the driving forces behind these decreases. The purpose of this study is to investigate the influence of fire in a mesic ecosystem, specifically a high-elevation red spruce (Picea rubens Sarg.) forest on Whitetop Mountain in the southern Appalachian Mountains. Six plots were established in a high elevation red spruce stand to characterize the stand composition. Tree ring data were collected to investigate radial growth relations to inter-annual climatic variability and cross-sections were used to investigate fire history. Red spruce continued to establish throughout the 19th century until a severe fire occurred in 1919 and caused a new cohort of yellow birch (Betula alleghaniensis Britt.) to establish within the stand. Logging and fire caused high mortality in the stand, yet many spruce remain that outdate the past disturbances. Red spruce saplings continue to persist in the stand, showing regeneration despite the abundant hardwoods. Moisture was the main contributing factor to red spruce growth in the dendroclimatic analysis. Red spruce radial growth was significantly correlated to high precipitation and low temperatures of the previous growing season, which is similar to recent research results. This study collaborates the current literature on red spruce growth along with the results found here in creating a model to represent the growth characteristics of red spruce when inter-mixed with hardwoods after a severe disturbance. Advisors/Committee Members: Lafon, Charles W. (advisor), Cairns, David (committee member), Smeins, Fred (committee member).

Subjects/Keywords: Picea; red spruce; disturbance; succession; climate

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Krustchinsky, A. R. (2009). Post-fire recovery and successional dynamics of an old growth red spruce forest in the southern Appalachian Mountains. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1316

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Krustchinsky, Adam R. “Post-fire recovery and successional dynamics of an old growth red spruce forest in the southern Appalachian Mountains.” 2009. Thesis, Texas A&M University. Accessed September 22, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-1316.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Krustchinsky, Adam R. “Post-fire recovery and successional dynamics of an old growth red spruce forest in the southern Appalachian Mountains.” 2009. Web. 22 Sep 2019.

Vancouver:

Krustchinsky AR. Post-fire recovery and successional dynamics of an old growth red spruce forest in the southern Appalachian Mountains. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1316.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Krustchinsky AR. Post-fire recovery and successional dynamics of an old growth red spruce forest in the southern Appalachian Mountains. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1316

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

20. Witmer, Angela Dawn. Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast.

Degree: 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9142

► Open coastlines are dynamic environments which experience seasonal and long-term physical changes. Sandy beaches line much of this coastline. As part of the requirements for… (more)

▼ Open coastlines are dynamic environments which experience seasonal and long-term physical changes. Sandy beaches line much of this coastline. As part of the requirements for Ph.D., I conducted a study examining intertidal macrofaunal and sedimentological features along the upper Texas coastal from 2007-2009. Four sites near Sabine Pass, High Island, Jamaica Beach, and Surfside Beach were selected. Beach transects were established at each site with six intertidal stations identified for collecting macrofaunal sediment core samples. Although sandy beaches are low in species diversity, the taxa found survive under dynamic and harsh conditions. In disturbance dominated environments, sandy beach fauna tended to be influenced by physical factors, instead of biologically controlled ones. The taxa found in this study include primary and secondary successional organisms which are adapted to handle disturbances. 98% of the benthic specimens identified belonged to six taxa with 92% from two taxa, Scolelepis squamata (38%) and Haustoriidae (54%). Macrofaunal zonation varied between sites because of beach geomorphology. On September 13, 2008, Hurricane Ike made landfall on the upper Texas coast causing extensive damage and erosion. Roughly 0.5 m of vertical height was lost at each beach post-storm. Total macrofaunal abundance declined by 87% from pre-storm counts. During the recovery the dominant two taxa, Haustoriidae and Scolelepis squamata, made up 82.78% of the total benthic specimens identified with haustoriids making up 68% of the total benthic taxa. The beach community remained dominated by four of the previously identified, six most common and abundant taxa. Recovery of sandy beaches often was hindered by increased vehicular traffic, sand removal and cleaning. Beach ecosystems have shown a high natural ecological resilience, but do not preclude the possibilities of habitat extinction and/or catastrophic community regime shift. Beaches are highly susceptible to human exploitation and global climate change, such as sea level rise. Knowledge of beach macrofaunal diversity along the Texas coast, such as haustoriids, could be used to estimate beach health and better evaluate the upward effects of natural disturbance, pollution and human uses on an integral part of the coastal ecosystem. Advisors/Committee Members: Wicksten, Mary K. (advisor), Rosenthal, Gil (committee member), Mathewson, Christopher (committee member), Feagin, Russell (committee member).

Subjects/Keywords: sandy beach ecology; intertidal; Texas; disturbance; hurricane

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Witmer, A. D. (2012). Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9142

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Witmer, Angela Dawn. “Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast.” 2012. Thesis, Texas A&M University. Accessed September 22, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9142.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Witmer, Angela Dawn. “Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast.” 2012. Web. 22 Sep 2019.

Vancouver:

Witmer AD. Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast. [Internet] [Thesis]. Texas A&M University; 2012. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9142.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Witmer AD. Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast. [Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9142

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

21. Sajjanshetty, Kiran. Disturbance Model Identification and Model Free Synthesis of Controllers for Multivariable Systems.

Degree: 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11486

► In this work, two different problems are addressed. In the first part, the problem of synthesizing a set of stabilizing controllers for unknown multivariable systems… (more)

▼ In this work, two different problems are addressed. In the first part, the problem of synthesizing a set of stabilizing controllers for unknown multivariable systems using direct data is analyzed. This is a model free approach to control design and uses only the frequency domain data of the system. It is a perfect complement to modern and post modern methods that begin the control design with a system model. A three step method, involving sequential design, search for stability boundaries and stability check is proposed. It is shown through examples that a complete set of stabilizing controllers of the chosen form can be obtained for the class of linear stable multivariable systems. The complexity of the proposed method is invariant with respect to the order of the system and increases with the increase in the number of input channels of the given multivariable system. The second part of the work deals with the problem of identification of model uncertainties and the effect of unwanted exogenous inputs acting on a discrete time multivariable system using its output information. A disturbance model is introduced which accounts for the system model uncertainties and the effect of unwanted exogenous inputs acting on the system. The frequency content of the exogenous signals is assumed to be known. A linear dynamical model of the disturbance is assumed with an input that has the same frequency content as that of the exogenous input signal. The extended model of the system is then subjected to Kalman filtering and the disturbance states estimates are used to obtain a least squares estimate of the disturbance model parameters. The proposed approach is applied to a linear multivariable system perturbed by an exogenous signal of known frequency content and the results obtained depict the efficacy of the proposed approach. Advisors/Committee Members: Chakravorty, Suman (advisor), Bhattacharyya, Shankar P. (advisor), Datta, Aniruddha, Chamberland-Tremblay, Jean (committee member).

Subjects/Keywords: Model Free design; multivariable systems; Disturbance Model

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sajjanshetty, K. (2012). Disturbance Model Identification and Model Free Synthesis of Controllers for Multivariable Systems. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11486

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sajjanshetty, Kiran. “Disturbance Model Identification and Model Free Synthesis of Controllers for Multivariable Systems.” 2012. Thesis, Texas A&M University. Accessed September 22, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11486.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sajjanshetty, Kiran. “Disturbance Model Identification and Model Free Synthesis of Controllers for Multivariable Systems.” 2012. Web. 22 Sep 2019.

Vancouver:

Sajjanshetty K. Disturbance Model Identification and Model Free Synthesis of Controllers for Multivariable Systems. [Internet] [Thesis]. Texas A&M University; 2012. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11486.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sajjanshetty K. Disturbance Model Identification and Model Free Synthesis of Controllers for Multivariable Systems. [Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11486

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Canterbury

22. Wootton, Katherine Lindsay. Fitting species into the complexity-stability debate.

Degree: School of Biological Sciences, 2015, University of Canterbury

URL: http://hdl.handle.net/10092/10912

► Ecological communities – groups of interacting species – are subject to a variety of disturbances. Understanding responses to these disturbances is a primary goal of… (more)

▼ Ecological communities – groups of interacting species – are subject to a variety of disturbances. Understanding responses to these disturbances is a primary goal of community ecology. The structural complexity of the community and the traits of the community’s constituent species are both known to have a significant impact on a community’s response to a disturbance. In this thesis, we investigated how these two scales – the community level and the species level – interactively affected community responses to both short and long term disturbances. Our first hypothesis was that interaction strength would be weaker in species with many interactions when compared to species with fewer interactions. To test this hypothesis, we used simulated food webs and found that, in locally stable food webs, species with many interactions tended predominantly to have interactions with predators or with prey. While these many predator or prey interactions were weak, they tended to be balanced by a few interactions of the opposite type (with prey or predators) which were stronger than average. The structure of the network, where species had predominantly one type of interaction, was essential for this relationship between the number and strength of interactions to arise. Our second study investigated how food webs of varying size and connectance respond to press and pulse disturbances. Many studies of food web stability only focus on the response to short term or “pulse” disturbances, however, as anthropogenic impacts on food webs increase, it is important to increase our understanding of food web responses to long term or “press” disturbances and determine whether they follow the same pattern as pulse disturbances. We found that more species rich and connected food webs were less stable to both types of disturbance and the more stable a food web was to a pulse disturbance, the more stable it was to a press disturbance as well. We also found that the traits – trophic level and number of interactions – of the disturbed species impacted a food web’s resistance to a press disturbance. Food webs were less resistant to the disturbance of species with many interactions or low trophic level than species with few interactions or high trophic level. The strength of species’ effects on stability was also moderated by the structural complexity of the food web. Together the work that makes up this thesis suggests that, to understand the stability of food webs to any kind of disturbance, we should consider both the structure of the network and the traits of the species embedded within it. While we found that networks were more vulnerable to disturbance of certain species than others, this observation also depended on the structure and complexity of the community they existed in. This has important implications for communities subject to disturbances, especially those disturbances which alter the way in which communities are structured and species interact.

Subjects/Keywords: species interactions; food web; stability; complexity; disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wootton, K. L. (2015). Fitting species into the complexity-stability debate. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/10912

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wootton, Katherine Lindsay. “Fitting species into the complexity-stability debate.” 2015. Thesis, University of Canterbury. Accessed September 22, 2019. http://hdl.handle.net/10092/10912.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wootton, Katherine Lindsay. “Fitting species into the complexity-stability debate.” 2015. Web. 22 Sep 2019.

Vancouver:

Wootton KL. Fitting species into the complexity-stability debate. [Internet] [Thesis]. University of Canterbury; 2015. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10092/10912.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wootton KL. Fitting species into the complexity-stability debate. [Thesis]. University of Canterbury; 2015. Available from: http://hdl.handle.net/10092/10912

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

23. Huang, Min-Fen. Finding the association between the quiet standing force plate measures and dynamic balance EMG responses.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0713115-152313

► In recent centuries, the average life expectancy has significantly increased. Our society is thus becoming an aging society. Therefore, the nursing problem for elder people… (more)

Subjects/Keywords: force platform; EMG; unexpected disturbance; dynamic balance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Huang, M. (2016). Finding the association between the quiet standing force plate measures and dynamic balance EMG responses. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0713115-152313

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huang, Min-Fen. “Finding the association between the quiet standing force plate measures and dynamic balance EMG responses.” 2016. Thesis, NSYSU. Accessed September 22, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0713115-152313.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huang, Min-Fen. “Finding the association between the quiet standing force plate measures and dynamic balance EMG responses.” 2016. Web. 22 Sep 2019.

Vancouver:

Huang M. Finding the association between the quiet standing force plate measures and dynamic balance EMG responses. [Internet] [Thesis]. NSYSU; 2016. [cited 2019 Sep 22]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0713115-152313.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huang M. Finding the association between the quiet standing force plate measures and dynamic balance EMG responses. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0713115-152313

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

24. Yatskov, Mikhail A. The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska.

Degree: PhD, Forest Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/58561

► Changes in climate caused by increased concentrations of carbon dioxide (CO₂) in the Earth’s atmosphere have led land and ocean surface temperatures to increase by… (more)

▼ Changes in climate caused by increased concentrations of carbon dioxide (CO₂) in the Earth’s atmosphere have led land and ocean surface temperatures to increase by 0.85°C and sea level to increase by 19 cm relative to preindustrial times. Global climate change will lead to further alterations in mean temperature and precipitation, as well as their extremes that are likely to influence disturbance regimes. Disturbance play an important role in forest dynamics and succession, by influencing forest ecosystems structure and function, reorganizing forests by reducing live and increasing dead matter, and thus affecting ecosystem carbon (C) balances. Under a changing climate disturbances are likely to cause widespread tree mortality across forested landscapes, creating vast amounts of coarse woody debris (CWD) that will emit C to the atmosphere to a degree that regional C balances and future C dynamics are likely to change. C balance of forested regions depends on inputs in form of C sequestered by live components during growth and outputs in form of C emitted from dead components through decomposition and combustion. Live trees in many forest ecosystems represent the largest aboveground C pool and the dynamics of this pool, as controlled by growth and mortality, have been extensively studied. In contrast, few have examined either the post-disturbance fate of CWD C or assessed C storage potential of salvaged biomass despite the occurrence of multiple recent large-scale disturbance events. Biomass and C stores and their uncertainty were estimated in the Temperate and the Boreal ecoregions of Coastal Alaska using the empirical data from the Forest Inventory and Analysis (FIA) program, literature data, and modeling using standard methods employed by the FIA program. The average aboveground woody live (218.9±4.6 Mg/ha) and log (28.1±1.8 Mg/ha) biomass in the Temperate ecoregion were among the lowest in the Pacific Northwest, whereas snag biomass (30.5±1.0 Mg/ha) was among the highest. In the Boreal ecoregion, CWD biomass comprised almost 50% of the regional aboveground woody store (76.7±3.8 Mg/ha) with bark beetle damaged stands containing 82% of the total CWD biomass. In contrast, in the Temperate ecoregion, CWD comprised 20% of the regional aboveground woody store (277.5 ±5.4 Mg/ha) with 76% of total CWD biomass in undisturbed stands. Total C stores estimates in Coastal Alaska ranged between 1523.6 and 1892.8 Tg with the highest contribution from soils and the largest potential reductions in uncertainty related to the tree and soils C pools. The impact of a large-scale spruce bark beetle (SBB) outbreak on aboveground dead wood C dynamics on the Kenai Peninsula was modeled utilizing data from the FIA program and CWD decomposition rate-constants from a chronosequence and decomposition-vectors analysis. Decomposition rate-constants from the chronosequence ranged between -0.015 yr⁻¹ and -0.022 yr⁻¹ for logs and -0.003 yr⁻¹ and +0.002 yr⁻¹ for snags. Decomposition rate-constants from the decomposition-vectors ranged… Advisors/Committee Members: Harmon, Mark E. (advisor), Krankina, Olga N. (committee member).

Subjects/Keywords: disturbance; Carbon sequestration – Alaska – Pacific Coast

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yatskov, M. A. (2016). The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/58561

Chicago Manual of Style (16^th Edition):

Yatskov, Mikhail A. “The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska.” 2016. Doctoral Dissertation, Oregon State University. Accessed September 22, 2019. http://hdl.handle.net/1957/58561.

MLA Handbook (7^th Edition):

Yatskov, Mikhail A. “The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska.” 2016. Web. 22 Sep 2019.

Vancouver:

Yatskov MA. The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/1957/58561.

Council of Science Editors:

Yatskov MA. The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/58561

Laurentian University

25. Yücel, Çağdaş Kera. Characterization of microbial communities associated with the rhizosphere of wetland plants from the Sudbury Region .

Degree: 2015, Laurentian University

URL: https://zone.biblio.laurentian.ca/dspace/handle/10219/2455

► The role of microbial communities within the plant rhizosphere is a rapidly developing area of research. Specificity of microbial community structure to plant species and… (more)

Subjects/Keywords: Microbial community structure; Bacteria; Industrial disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yücel, �. K. (2015). Characterization of microbial communities associated with the rhizosphere of wetland plants from the Sudbury Region . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/dspace/handle/10219/2455

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yücel, Çağdaş Kera. “Characterization of microbial communities associated with the rhizosphere of wetland plants from the Sudbury Region .” 2015. Thesis, Laurentian University. Accessed September 22, 2019. https://zone.biblio.laurentian.ca/dspace/handle/10219/2455.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yücel, Çağdaş Kera. “Characterization of microbial communities associated with the rhizosphere of wetland plants from the Sudbury Region .” 2015. Web. 22 Sep 2019.

Vancouver:

Yücel �K. Characterization of microbial communities associated with the rhizosphere of wetland plants from the Sudbury Region . [Internet] [Thesis]. Laurentian University; 2015. [cited 2019 Sep 22]. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2455.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yücel �K. Characterization of microbial communities associated with the rhizosphere of wetland plants from the Sudbury Region . [Thesis]. Laurentian University; 2015. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2455

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Helsinki

26. Kilpinen, Satu. Variability and Mixed-Severity Disturbances Characterize Unmanaged Southern Boreal Forests in Russian Karelia.

Degree: Department of Forest Sciences; Helsingfors universitet, Agrikultur- och forstvetenskapliga fakulteten, Institutionen för skogsvetenskaper, 2018, University of Helsinki

URL: http://hdl.handle.net/10138/236044

►

Kasvava ihmistoiminta on vähentänyt luonnonmetsien määrää radikaalisti viimeisten vuosikymmenten aikana. Vaikka luonnonmetsiä on tutkittu aktiivisesti 1990-luvulta alkaen, tutkimustiedossa on vielä paljon puutteita, erityisesti eteläboreaalisten metsien… (more)

▼

Kasvava ihmistoiminta on vähentänyt luonnonmetsien määrää radikaalisti viimeisten vuosikymmenten aikana. Vaikka luonnonmetsiä on tutkittu aktiivisesti 1990-luvulta alkaen, tutkimustiedossa on vielä paljon puutteita, erityisesti eteläboreaalisten metsien ja lehti- ja sekametsien osalta. Luonnonmetsätutkimuksesta saatua tietoa voidaan hyödyntää esimerkiksi vertailukohtana ihmisen toiminnan vaikutuksia arvioitaessa tai kestävän metsätalouden suunnittelussa. Luontaista häiriödynamiikkaa voidaan käyttää mallina metsänhoidossa, esimerkiksi ennallistamisen tai talousmetsien hoitotoimenpiteiden suunnittelussa. Taustalla on tällöin oletus, että luontainen häiriödynamiikka (tai sen emulointi) auttaa säilyttämään paremmin sellaisia metsän ominaisuuksia tai arvoja, kuten biodiversiteetti ja resilienssi. Tämän tutkimuksen tarkoituksena oli selvittää häiriöiden historiallista vaihtelua ja vaikutusta metsän rakenteeseen neljällä eteläboreaalisen metsän kohteella Venäjän Karjalassa. Tavoitteena oli määrittää häiriöiden voimakkuus (intensiteetti), frekvenssi ja alueellinen mittakaava. Lisäksi tarkasteltiin mahdollista yhteyttä häiriöiden laadun ja metsän ominaisuuksien (metsätyypin ja puulajien) välillä. Neljälle tutkimuskohteelle perustettiin yhteensä 14 koealaa, joilta mitattiin puustotunnukset ja kairattiin lustonäytteet yhteensä 140:stä koepuusta. Lustonäytteet analysoitiin dendroekologisin menetelmin. Häiriöitä ilmentävistä, latvuskerrokseen päässeistä (vapautuneista) ja aukkoon syntyneistä puista muodostettiin häiriökronologiat kohteille ja koealoille. Tutkituista kohteista kaksi oli kuusivaltaisia, yksi mäntyvaltainen ja yksi sekametsä. Kolme kohteista oli eri-ikäisrakenteisia ja männikkö oli melko tasaikäinen (80-100v). Häiriöissä esiintyi suurta ajallista ja alueellista vaihtelua kohteiden ja koealojen välillä. Kaikilla kohteilla esiintyi viimeisten kahden tai kolmen vuosisadan aikana voimakkuudeltaan vaihtelevia häiriöitä matalasta (0-20%) keskisuureen (20-40%) tai matalasta suureen (>40%). Kaikilla kohteilla esiintyi metsikkötason häiriöitä, mutta todisteita alueellisen tason häiriöistä ei löytynyt. Metsän ominaisuuksien ja häiriöiden laadun välillä ei havaittu selvää yhteyttä. Häiriödynamiikoissa esiintyi huomattavaa vaihtelua frekvenssin, intensiteetin ja vaihteluvälin suhteen. Tulokset korostavat metsien rakenteen ja häiriöhistorian luonnollista vaihtelua. Tulokset tukevat aiempaa häiriötutkimusta Venäjän Karjalasta ja antavat arvokasta lisätietoa eteläboreaalisten metsien häiriödynamiikasta.

Increasing human impact has radically changed the forest structure and depleted the area of natural forests in many regions. In spite of active natural forest research during the last decades, the current knowledge on the southern boreal region, deciduous and mixed forests fall short. The knowledge on natural forests can be utilized for planning sustainable forestry, conservation measures or in environmental impact assessments regarding human influence on forests. The natural disturbance dynamics can be used as a model in…

Subjects/Keywords: disturbance dynamics; dendrochronology; disturbance history; dendrochronology; Metsien ekologia ja käyttö; Forest Ecology and Management; skoglig ekologi och resurshushållning; disturbance dynamics; dendrochronology; disturbance history; dendrochronology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kilpinen, S. (2018). Variability and Mixed-Severity Disturbances Characterize Unmanaged Southern Boreal Forests in Russian Karelia. (Masters Thesis). University of Helsinki. Retrieved from http://hdl.handle.net/10138/236044

Chicago Manual of Style (16^th Edition):

Kilpinen, Satu. “Variability and Mixed-Severity Disturbances Characterize Unmanaged Southern Boreal Forests in Russian Karelia.” 2018. Masters Thesis, University of Helsinki. Accessed September 22, 2019. http://hdl.handle.net/10138/236044.

MLA Handbook (7^th Edition):

Kilpinen, Satu. “Variability and Mixed-Severity Disturbances Characterize Unmanaged Southern Boreal Forests in Russian Karelia.” 2018. Web. 22 Sep 2019.

Vancouver:

Kilpinen S. Variability and Mixed-Severity Disturbances Characterize Unmanaged Southern Boreal Forests in Russian Karelia. [Internet] [Masters thesis]. University of Helsinki; 2018. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10138/236044.

Council of Science Editors:

Kilpinen S. Variability and Mixed-Severity Disturbances Characterize Unmanaged Southern Boreal Forests in Russian Karelia. [Masters Thesis]. University of Helsinki; 2018. Available from: http://hdl.handle.net/10138/236044

Kent State University

27. Stanek, Kelly Marie. Neuropsychological Correlates of Body Image Disturbance.

Degree: MA, College of Arts and Sciences / Department of Psychology, 2009, Kent State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=kent1239059135

► Body image disturbance (BID) is a significant concern for many young women, even those without eating disorders. The symptomatology of BID provides for numerous intuitive… (more)

Subjects/Keywords: Psychology; Body Image Disturbance; Cognitive function; Neuropsychology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Stanek, K. M. (2009). Neuropsychological Correlates of Body Image Disturbance. (Masters Thesis). Kent State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=kent1239059135

Chicago Manual of Style (16^th Edition):

Stanek, Kelly Marie. “Neuropsychological Correlates of Body Image Disturbance.” 2009. Masters Thesis, Kent State University. Accessed September 22, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1239059135.

MLA Handbook (7^th Edition):

Stanek, Kelly Marie. “Neuropsychological Correlates of Body Image Disturbance.” 2009. Web. 22 Sep 2019.

Vancouver:

Stanek KM. Neuropsychological Correlates of Body Image Disturbance. [Internet] [Masters thesis]. Kent State University; 2009. [cited 2019 Sep 22]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1239059135.

Council of Science Editors:

Stanek KM. Neuropsychological Correlates of Body Image Disturbance. [Masters Thesis]. Kent State University; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1239059135

Penn State University

28. Tyrna, Abbey Anne. Characterizing the Network Structure of Headwater Riparian Wetlands in yhe Ridge and Valley Region, Pennsylvania.

Degree: PhD, Geography, 2014, Penn State University

URL: https://etda.libraries.psu.edu/catalog/24934

► This dissertation aims to illuminate the cumulative impact of anthropogenic disturbances on the collective capacity of wetland functions. Changes to wetland hydrologic regime and subsequent… (more)

▼ This dissertation aims to illuminate the cumulative impact of anthropogenic disturbances on the collective capacity of wetland functions. Changes to wetland hydrologic regime and subsequent connectivity in response to landscape disturbances are poorly understood. However, studies have shown that anthropogenic disturbances have decreased ecosystem services in regional watersheds leading to lower water quality conditions. Considering the multi-scale impacts to wetland hydrology in the context of connectivity can further the understanding of important and fundamental interactions of the terrestrial and aquatic realms that contribute to water quality. This work provides a framework for an integrated ecological assessment that can be used to better manage wetland-derived functions and ecosystem services. Chapter 1 provides a conceptual framework for considering wetlands and their aquatic and terrestrial linkages, and outlines the overall research objectives. Hydrologic responses of 10 wetlands classified by disturbance level (highly disturbed and least disturbed or reference standard condition) were examined in Chapter 2. Hydrologic regime variation across the two disturbance groups was much greater than the variation within each group. This suggests that disturbance overrides hydrologic characterization by hydrogeomorphic subclass for riverine upper perennial wetlands. For all sites, percent saturation ranged from 0 - 100% during the growing season. For reference standard sites, percent saturation ranged from 58 - 100%. Highly disturbed sites, which each had a unique package of perturbations, had a larger variation in percent saturation both over the entire study period (0 - 78%) and within a single growing season (3 - 79%). All wetland hydrologic regime characteristics were strongly correlated with disturbance score. However, when examined individually, no one landscape, buffer zone, or site level feature could explain the variability in all wetland hydrologic regime characteristics. Hydrologic regime was used to infer hydrologic flow paths and resultant hydrologic connections between wetlands, streams and terrestrial upland. Wetland and stream inventories in central Pennsylvania were enhanced and wetland condition was documented in Chapter 3. Wetland inventories were enhanced by field observations and condition was assessed using Level 1 and Level 2 assessment tools. Fifty-seven new wetlands totaling 23 ha (57 ac) and three National Wetland Inventory (NWI) wetland extensions equaling 5 ha (12 ac) were added to the Upper Shaver Creek wetland inventory. The new inventory nearly doubled the existing wetland area for headwater riparian wetlands within Upper Shaver Creek watershed. The stream length for the newly inventoried segments equaled 35 km adding nearly one-third more of stream length to the watershed inventory. Level 1 assessment revealed that one-third of the wetland resource in Upper Shaver Creek was rated in the highest or high category of ecological condition and 17% were in lowest category. Wetland buffers,…

Subjects/Keywords: wetlands; hydrology; land use disturbance; graph theory

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tyrna, A. A. (2014). Characterizing the Network Structure of Headwater Riparian Wetlands in yhe Ridge and Valley Region, Pennsylvania. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/24934

Chicago Manual of Style (16^th Edition):

Tyrna, Abbey Anne. “Characterizing the Network Structure of Headwater Riparian Wetlands in yhe Ridge and Valley Region, Pennsylvania.” 2014. Doctoral Dissertation, Penn State University. Accessed September 22, 2019. https://etda.libraries.psu.edu/catalog/24934.

MLA Handbook (7^th Edition):

Tyrna, Abbey Anne. “Characterizing the Network Structure of Headwater Riparian Wetlands in yhe Ridge and Valley Region, Pennsylvania.” 2014. Web. 22 Sep 2019.

Vancouver:

Tyrna AA. Characterizing the Network Structure of Headwater Riparian Wetlands in yhe Ridge and Valley Region, Pennsylvania. [Internet] [Doctoral dissertation]. Penn State University; 2014. [cited 2019 Sep 22]. Available from: https://etda.libraries.psu.edu/catalog/24934.

Council of Science Editors:

Tyrna AA. Characterizing the Network Structure of Headwater Riparian Wetlands in yhe Ridge and Valley Region, Pennsylvania. [Doctoral Dissertation]. Penn State University; 2014. Available from: https://etda.libraries.psu.edu/catalog/24934

Penn State University

29. Hutchison, Brian. The Influence of Perceived Student Poverty on School Counselor Ratings of Client Disturbance and Attractiveness.

Degree: PhD, Counselor Education, 2009, Penn State University

URL: https://etda.libraries.psu.edu/catalog/9791

► The purpose of this study was to explore the influence of perceived student poverty and academic preparation on school counselor ratings of student disturbance and… (more)

Subjects/Keywords: disturbance; attraction; school counseling; working alliance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hutchison, B. (2009). The Influence of Perceived Student Poverty on School Counselor Ratings of Client Disturbance and Attractiveness. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/9791

Chicago Manual of Style (16^th Edition):

Hutchison, Brian. “The Influence of Perceived Student Poverty on School Counselor Ratings of Client Disturbance and Attractiveness.” 2009. Doctoral Dissertation, Penn State University. Accessed September 22, 2019. https://etda.libraries.psu.edu/catalog/9791.

MLA Handbook (7^th Edition):

Hutchison, Brian. “The Influence of Perceived Student Poverty on School Counselor Ratings of Client Disturbance and Attractiveness.” 2009. Web. 22 Sep 2019.

Vancouver:

Hutchison B. The Influence of Perceived Student Poverty on School Counselor Ratings of Client Disturbance and Attractiveness. [Internet] [Doctoral dissertation]. Penn State University; 2009. [cited 2019 Sep 22]. Available from: https://etda.libraries.psu.edu/catalog/9791.

Council of Science Editors:

Hutchison B. The Influence of Perceived Student Poverty on School Counselor Ratings of Client Disturbance and Attractiveness. [Doctoral Dissertation]. Penn State University; 2009. Available from: https://etda.libraries.psu.edu/catalog/9791

30. Hernandez, Heather. Independent Study and the Circle of Courage: A Comprehensive Program Description .

Degree: 2012, California State University – San Marcos

URL: http://hdl.handle.net/10211.8/127

► This project provides a retroactive qualitative description of an independent study program for students with the special education eligibility diagnosis of emotional disturbance. The program… (more)

Subjects/Keywords: alternative education; independent study; emotional disturbance

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hernandez, H. (2012). Independent Study and the Circle of Courage: A Comprehensive Program Description . (Thesis). California State University – San Marcos. Retrieved from http://hdl.handle.net/10211.8/127

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hernandez, Heather. “Independent Study and the Circle of Courage: A Comprehensive Program Description .” 2012. Thesis, California State University – San Marcos. Accessed September 22, 2019. http://hdl.handle.net/10211.8/127.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hernandez, Heather. “Independent Study and the Circle of Courage: A Comprehensive Program Description .” 2012. Web. 22 Sep 2019.

Vancouver:

Hernandez H. Independent Study and the Circle of Courage: A Comprehensive Program Description . [Internet] [Thesis]. California State University – San Marcos; 2012. [cited 2019 Sep 22]. Available from: http://hdl.handle.net/10211.8/127.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hernandez H. Independent Study and the Circle of Courage: A Comprehensive Program Description . [Thesis]. California State University – San Marcos; 2012. Available from: http://hdl.handle.net/10211.8/127

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations