Open Access Theses and Dissertations

Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · date | New search

You searched for +publisher:"Virginia Commonwealth University" +contributor:("Dr. Paul Bukaveckas"). Showing records 1 – 2 of 2 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


Virginia Commonwealth University

1. Sagara, Benjamin Tai. MODERATE SEVERITY DISTURBANCE HAS SIMILAR EFFECTS ON THE PRODUCTION OF THREE FORESTS NESTED WITHIN THE UPPER GREAT LAKES LANDSCAPE.

Degree: MS, Biology, 2017, Virginia Commonwealth University

URL: https://doi.org/10.25772/5N1F-9972  ; https://scholarscompass.vcu.edu/etd/4964 

Moderate severity disturbances, which only kill a subset of canopy trees (e.g., via insects, pathogens, and windthrow), are increasingly widespread, and can alter forest structure and production. Whether moderate severity disturbance similarly affects the net primary production (NPP) of different forest stands within inherently heterogeneous landscapes, however, is unknown. We experimentally disturbed three, 2-ha stands varying in forest structure and primary production, reducing stand basal area 38 to 66 % by stem girdling all mature early successional aspen (Populus) and birch (Betula). For nearly a decade, we examined how the forest stands restructured and recovered, and linked post-recovery physical and biological structure with light absorption and wood NPP. Disturbance significantly altered the structure of all stands and prompted a similar decade-long pattern of primary production decline and recovery. All stands exhibited an initial reduction in wood NPP, recovering to, or exceeded pre-disturbance levels within eight years. Following the recovery of wood NPP, more biologically diverse forest canopies with higher leaf area indexes captured more light, and, subsequently, had higher rates of wood NPP. We provide limited support that disturbance may enhance long-term primary production through its effects on canopy structural reorganization. We conclude that, while the forests examined responded similarly to disturbance, improved understanding of different forest ecosystems’ response to disturbance remains critical to informing carbon management decisions across diverse landscape mosaics. Advisors/Committee Members: Dr. Chris Gough, Dr. Julie Zinnert, Dr. Paul Bukaveckas, Dr. Derek Johnson.

Subjects/Keywords: Biology

Record Details  Similar Records    Google PlusoneFacebookTwitterCiteULikeMendeleyreddit

❌

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

APA (6th Edition):

Sagara, B. T. (2017). MODERATE SEVERITY DISTURBANCE HAS SIMILAR EFFECTS ON THE PRODUCTION OF THREE FORESTS NESTED WITHIN THE UPPER GREAT LAKES LANDSCAPE. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/5N1F-9972 ; https://scholarscompass.vcu.edu/etd/4964

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

Chicago Manual of Style (16th Edition):

Sagara, Benjamin Tai. “MODERATE SEVERITY DISTURBANCE HAS SIMILAR EFFECTS ON THE PRODUCTION OF THREE FORESTS NESTED WITHIN THE UPPER GREAT LAKES LANDSCAPE.” 2017. Thesis, Virginia Commonwealth University. Accessed January 17, 2021. https://doi.org/10.25772/5N1F-9972 ; https://scholarscompass.vcu.edu/etd/4964.

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

MLA Handbook (7th Edition):

Sagara, Benjamin Tai. “MODERATE SEVERITY DISTURBANCE HAS SIMILAR EFFECTS ON THE PRODUCTION OF THREE FORESTS NESTED WITHIN THE UPPER GREAT LAKES LANDSCAPE.” 2017. Web. 17 Jan 2021.

Vancouver:

Sagara BT. MODERATE SEVERITY DISTURBANCE HAS SIMILAR EFFECTS ON THE PRODUCTION OF THREE FORESTS NESTED WITHIN THE UPPER GREAT LAKES LANDSCAPE. [Internet] [Thesis]. Virginia Commonwealth University; 2017. [cited 2021 Jan 17]. Available from: https://doi.org/10.25772/5N1F-9972 ; https://scholarscompass.vcu.edu/etd/4964.

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

Council of Science Editors:

Sagara BT. MODERATE SEVERITY DISTURBANCE HAS SIMILAR EFFECTS ON THE PRODUCTION OF THREE FORESTS NESTED WITHIN THE UPPER GREAT LAKES LANDSCAPE. [Thesis]. Virginia Commonwealth University; 2017. Available from: https://doi.org/10.25772/5N1F-9972 ; https://scholarscompass.vcu.edu/etd/4964

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


Virginia Commonwealth University

2. Tassone, Spencer. A comparison of computational methods for estimating estuarine production and respiration from diel open water dissolved oxygen measurements.

Degree: MS, Biology, 2017, Virginia Commonwealth University

URL: https://doi.org/10.25772/5906-DS96  ; https://scholarscompass.vcu.edu/etd/4988 

Diel dissolved oxygen (DO) data were used to characterize seasonal, inter-annual, and longitudinal variation in production and respiration for the James River Estuary. Two computational methods (Bayesian and bookkeeping) were applied to these data to determine whether inferences regarding DO metabolism are sensitive to methodology. Net metabolism was sensitive to methodology as Bayesian results indicated net heterotrophy (production < respiration) while bookkeeping results indicated net autotrophy (production > respiration). Differences in net metabolism among the methods was due to low seasonal variation in respiration using the Bayesian method, whereas bookkeeping results showed a strong correlation between production and respiration. Bayesian results suggest a dependence on allochthonous organic matter (OM) whereas bookkeeping results suggest that metabolism is dependent on autochthonous OM. This study highlights the importance in considering the method used to derive metabolic estimates as it can impact the assessment of trophic status and sources of OM supporting an estuary. Advisors/Committee Members: Dr. Paul Bukaveckas, Dr. Scott Neubauer, Dr. Daniel McGarvey, Dr. S. Leigh McCallister.

Subjects/Keywords: Metabolism; Estuary; Ecosystem respiration; Primary production; Net ecosystem metabolism; James river; Marine Biology; Terrestrial and Aquatic Ecology

Record Details  Similar Records    Google PlusoneFacebookTwitterCiteULikeMendeleyreddit

❌

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

APA (6th Edition):

Tassone, S. (2017). A comparison of computational methods for estimating estuarine production and respiration from diel open water dissolved oxygen measurements. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/5906-DS96 ; https://scholarscompass.vcu.edu/etd/4988

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

Chicago Manual of Style (16th Edition):

Tassone, Spencer. “A comparison of computational methods for estimating estuarine production and respiration from diel open water dissolved oxygen measurements.” 2017. Thesis, Virginia Commonwealth University. Accessed January 17, 2021. https://doi.org/10.25772/5906-DS96 ; https://scholarscompass.vcu.edu/etd/4988.

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

MLA Handbook (7th Edition):

Tassone, Spencer. “A comparison of computational methods for estimating estuarine production and respiration from diel open water dissolved oxygen measurements.” 2017. Web. 17 Jan 2021.

Vancouver:

Tassone S. A comparison of computational methods for estimating estuarine production and respiration from diel open water dissolved oxygen measurements. [Internet] [Thesis]. Virginia Commonwealth University; 2017. [cited 2021 Jan 17]. Available from: https://doi.org/10.25772/5906-DS96 ; https://scholarscompass.vcu.edu/etd/4988.

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

Council of Science Editors:

Tassone S. A comparison of computational methods for estimating estuarine production and respiration from diel open water dissolved oxygen measurements. [Thesis]. Virginia Commonwealth University; 2017. Available from: https://doi.org/10.25772/5906-DS96 ; https://scholarscompass.vcu.edu/etd/4988

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

.