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Rutgers University
1.
Clough, Brian J., 1984-.
Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty.
Degree: PhD, Ecology and Evolution, 2014, Rutgers University
URL: https://rucore.libraries.rutgers.edu/rutgers-lib/45226/ 
► Forest soil organic carbon (SOC) is the largest terrestrial pool of carbon, and its management plays a significant role in global efforts to mitigate atmospheric…
(more)
▼ Forest soil organic carbon (SOC) is the largest terrestrial pool of carbon, and its management plays a significant role in global efforts to mitigate atmospheric carbon concentrations. Despite its importance, much of the world is still lacking good baseline data of forest soil carbon stocks. In the past, broad scale stocks of forest SOC have been derived from soil surveys based on a small number of sampling units, and the resulting estimates are highly uncertain. More recently, predictive statistical models have received attention as an approach for mapping soil carbon at scales relevant to climate change policy and research. However, in order for these models to be useful they must provide full and accurate accounting of uncertainty, in addition to accurate predictions. This dissertation aims to improve prediction of forest SOC by incorporating two potentially important sources of uncertainty into the modeling process: (1) spatial dependence in soil inventory data; and (2) error associated with assuming a single model to be “true”. In order to address these issues, we turn to well established techniques in the Bayesian statistics literature. Our primary focus is on exploring the application of spatial Bayesian hierarchical regression models for improving estimates of forest carbon. This line of research involves both characterizing the spatial dependence in forest SOC inventories at regional, national, and continental scales (the focus of chapters 1 and 3), and applying spatial hierarchical models for mapping SOC and validating this method against non-spatial approaches (chapter 4). Additionally, in chapter 2 we compare methods for model selection and weighting, as well as the effect of model averaging to account for model uncertainty, through rigorous predictive checks. This work is conducted with both forest SOC data as well as other ecological datasets. Taken together, these studies highlight the need for a consistent statistical framework in order to generate reproducible estimates of forest SOC stocks across the globe. Our results argue for hierarchical models, and especially spatial hierarchical models, as a reasonable way forward for predictive mapping of SOC. However, they also highlight significant methodological development that will be necessary in order to obtain predictively accurate models.
Advisors/Committee Members: Green, Edwin J. (chair), Lathrop, Richard G. (internal member), Smouse, Peter (internal member), Finley, Andrew O. (outside member).
Subjects/Keywords: Forest soils; Soils – Carbon content
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APA (6th Edition):
Clough, Brian J., 1. (2014). Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/45226/
Chicago Manual of Style (16th Edition):
Clough, Brian J., 1984-. “Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty.” 2014. Doctoral Dissertation, Rutgers University. Accessed March 07, 2021.
https://rucore.libraries.rutgers.edu/rutgers-lib/45226/.
MLA Handbook (7th Edition):
Clough, Brian J., 1984-. “Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty.” 2014. Web. 07 Mar 2021.
Vancouver:
Clough, Brian J. 1. Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty. [Internet] [Doctoral dissertation]. Rutgers University; 2014. [cited 2021 Mar 07].
Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45226/.
Council of Science Editors:
Clough, Brian J. 1. Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty. [Doctoral Dissertation]. Rutgers University; 2014. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45226/
University of Montana
2.
Carlson, Tony Clifford.
Specific gravity and site index as related to soil series (Sanders County, Montana).
Degree: MS, 1964, University of Montana
URL: https://scholarworks.umt.edu/etd/3634
Subjects/Keywords: Soils; Forest soils
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APA (6th Edition):
Carlson, T. C. (1964). Specific gravity and site index as related to soil series (Sanders County, Montana). (Masters Thesis). University of Montana. Retrieved from https://scholarworks.umt.edu/etd/3634
Chicago Manual of Style (16th Edition):
Carlson, Tony Clifford. “Specific gravity and site index as related to soil series (Sanders County, Montana).” 1964. Masters Thesis, University of Montana. Accessed March 07, 2021.
https://scholarworks.umt.edu/etd/3634.
MLA Handbook (7th Edition):
Carlson, Tony Clifford. “Specific gravity and site index as related to soil series (Sanders County, Montana).” 1964. Web. 07 Mar 2021.
Vancouver:
Carlson TC. Specific gravity and site index as related to soil series (Sanders County, Montana). [Internet] [Masters thesis]. University of Montana; 1964. [cited 2021 Mar 07].
Available from: https://scholarworks.umt.edu/etd/3634.
Council of Science Editors:
Carlson TC. Specific gravity and site index as related to soil series (Sanders County, Montana). [Masters Thesis]. University of Montana; 1964. Available from: https://scholarworks.umt.edu/etd/3634
University of Aberdeen
3.
Ražauskaité, Rita.
Soil organic carbon changes in the UK forest soils.
Degree: PhD, 2019, University of Aberdeen
URL: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12153053850005941
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794111
► Forest soils contain large amounts of carbon, which can be lost through forest operations or changing environmental conditions. As forests are perennial with infrequent disturbance,…
(more)
▼ Forest soils contain large amounts of carbon, which can be lost through forest operations or changing environmental conditions. As forests are perennial with infrequent disturbance, soil organic carbon (SOC) accumulation differs from highly disturbed land uses, with significant accumulation occurring in deeper soil horizons (subsoil). This thesis investigated changes in SOC in both topsoil and subsoil under the main native broadleaved and coniferous species in the UK, oak and Scots pine. The overall results showed that prolonging forest rotations could allow more carbon (C) to be sequestered in soils. In Scots pine (Chapter 3), increasing rotation age would allow greater accumulation of the top F and H horizons, while in oak stands (Chapter 2), the most pronounced changes would be in the mineral subsoil horizons. In the oak forest, we demonstrated importance of sampling subsoil horizons (Chapter 2). Including subsoil measurements showed that young forest subsoil had similar amounts of SOC as ancient forests. Long-term RothC simulations of pine forests (Chapter 3) suggested that the lowest soil C stocks occur, not immediately after harvesting, but closer to the middle of the rotation. This shows the importance of including 40 to 50 year old stands in sampling campaigns to capture the magnitude of these losses. The simulations suggested that converting current grassland sites to forest would allow accumulation of similar amounts of SOC as in ancient forest sites. Model SOC pools were compared to measurable fractions for the 220 year old oak stands. Discrepancy between measured fractions and simulated pools (Chapter 4) suggested a significant difference in soil processes in the topsoil and subsoil. Current modelling approaches might not be sufficient to represent factors that control SOC dynamics with depth.
Subjects/Keywords: 570; Forest soils; Soils; Scots pine; Oak
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APA (6th Edition):
Ražauskaité, R. (2019). Soil organic carbon changes in the UK forest soils. (Doctoral Dissertation). University of Aberdeen. Retrieved from https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12153053850005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794111
Chicago Manual of Style (16th Edition):
Ražauskaité, Rita. “Soil organic carbon changes in the UK forest soils.” 2019. Doctoral Dissertation, University of Aberdeen. Accessed March 07, 2021.
https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12153053850005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794111.
MLA Handbook (7th Edition):
Ražauskaité, Rita. “Soil organic carbon changes in the UK forest soils.” 2019. Web. 07 Mar 2021.
Vancouver:
Ražauskaité R. Soil organic carbon changes in the UK forest soils. [Internet] [Doctoral dissertation]. University of Aberdeen; 2019. [cited 2021 Mar 07].
Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12153053850005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794111.
Council of Science Editors:
Ražauskaité R. Soil organic carbon changes in the UK forest soils. [Doctoral Dissertation]. University of Aberdeen; 2019. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12153053850005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794111
Oregon State University
4.
Wagai, Rota.
Dynamics of water-soluble carbon in forest soils of contrasting fertility.
Degree: MS, Forest Science, 1999, Oregon State University
URL: http://hdl.handle.net/1957/13257
► Most soil organic C is in a stable form, associated with clay minerals in the upper soil profile. Upon environmental and land-use changes, stable soil…
(more)
▼ Most soil organic C is in a stable form, associated with clay minerals in the upper soil profile. Upon environmental and land-use changes, stable soil C is
subject to losses, which influence the global C cycle and the productivity of terrestrial ecosystems. However, mechanisms controlling soil C destabilization are not well understood. Microbial respiration and leaching are the two major fates of destabilized C. I hypothesized that water-soluble C plays an important role in soil C turnover and studied the susceptibility of water-soluble C both to leaching and to microbial degradation. Furthermore, I studied factors influencing the amount of water-soluble C and its biodegradability using five
soils from a wide fertility gradient. First, soil columns (20 cm of top soil) with and without Douglas-fir seedlings were leached every 2 weeks for 20 weeks and the
soils were extracted with water before and after the 20-week study period. Extracts contained 8 to 17 times more dissolved organic C (DOC) than did leachates. Similarly, biodegradable DOC (BDOC) in extracts was 4 to 96 times that in leachates. The leachable C pool was constant over the 20 weeks regardless of the presence of tree seedlings in soil leaching columns, while the extractable C pooi declined by 31 to 40% over time. A soil C destabilization model was proposed based on the changes in measured C pools (particulate, water-extractable, and leachable C) and the estimates of soil respiration and microbial biomass from a previous work. Microbial respiration accounted for 86 to 92% of the C destabilized. Leached C accounted for the remaining 8 to 14%, indicating its minor role in C mobilization in the system studied. However, the model didn't rule out the possibility that extractable C accounts for a significant portion of microbial respiration. Second, the hypothesis that water-extractable C is a major energy source for microbes was tested using Douglas-fir
forest soils from two sites (Cascade Head and Wind River) and with and without red-alder influence. Despite a large range of soil fertility (C:N ratio of 13 to 31), C extracted before and after the 2-month soil incubation showed a strong correlation with the C respired during the incubation period (r2 = 0.71 and 0.92), suggesting the efficacy of extractable C pools to predict the availability of C to soil microbes. Furthermore, DOC and BDOC pool were relatively constant during the 2- month incubation, indicating the possibility that a rapid regeneration and degradation of extractable C explain the measured microbial respiration during the study period. No clear correlation was found between DOC and dissolved organic N. Across all stands, soil C:N ratio showed a strong correlation with the relative amount of BDOC in the DOC incubation (r2 = 0.72) and with the relative amount of C respired from bulk soil (per g C basis) at the end of incubation period (r2 = 0.72), suggesting a strong influence of soil C:N on the overall C availability to soil microbes both in solution and solid phase. Water-extractable C deserves…
Advisors/Committee Members: Sollins, Phillip (advisor), Lajtha, Kate (committee member).
Subjects/Keywords: Forest soils
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APA (6th Edition):
Wagai, R. (1999). Dynamics of water-soluble carbon in forest soils of contrasting fertility. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13257
Chicago Manual of Style (16th Edition):
Wagai, Rota. “Dynamics of water-soluble carbon in forest soils of contrasting fertility.” 1999. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/13257.
MLA Handbook (7th Edition):
Wagai, Rota. “Dynamics of water-soluble carbon in forest soils of contrasting fertility.” 1999. Web. 07 Mar 2021.
Vancouver:
Wagai R. Dynamics of water-soluble carbon in forest soils of contrasting fertility. [Internet] [Masters thesis]. Oregon State University; 1999. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/13257.
Council of Science Editors:
Wagai R. Dynamics of water-soluble carbon in forest soils of contrasting fertility. [Masters Thesis]. Oregon State University; 1999. Available from: http://hdl.handle.net/1957/13257
Oregon State University
5.
Ranken, Darrel Wesley.
Hydrologic properties of soil and subsoil on a steep, forested slope.
Degree: MS, Forest Engineering, 1974, Oregon State University
URL: http://hdl.handle.net/1957/9767
► The purpose of this study was to examine certain hydrologic properties of the soil and subsoil on a steep forested slope and relate these -rceTties…
(more)
▼ The purpose of this study was to examine certain hydrologic
properties of the soil and subsoil on a steep forested slope and relate
these -rceTties to the movement of water via subsurface routes.
The hydrologic properties examined were bulk density, soil texture,
total porosity, pore size distribution, saturated hydraulic conductivity, -
and soil moisture-tension relationships.
Soil samples were taken from a 2. 5 ha study slope on watershed
10 of the H. S. Andrews Experimental
Forest near Blue River,
Oregon. Eleven soil pits were excavated and six soil core samples
were taken at depths of 10, 30, 70, 110, 130, 150, and 200 cm where
soil conditions permitted. Laboratory analyses were conducted to
determine the hydrologic properties of each sample. The extreme
permeability and high porosities of the samples necessitated the use
of specially designed apparatus to measure the saturated weights and
hydraulic conductivities.
Particle size distribution changed only slightly with depth. The
A and B horizons were predominately clay barns and the C horizons
were classified as clays. Total porosities also varied little with depth.
The porosity of the soil (A and B horizons) averaged nearly 65% while
the porosity of the subsoil (C horizons) averaged nearly 55%. Bulk
density also varied little with depth. Soil bulk densities averaged
825 gm/cm3 and subsoil bulk densities averaged 1. 180 gm/cm3.
The hydraulic conductivity and pore size distribution of the soil
and subsoil were well. correlated and changed considerably with depth.
Significant decreases in the hydraulic conductivities occurred between
the 30 cm and 70 cm depths as well as between the 110 cm and 130 cm
depths in some of the soil pits. At most soil pits the surface soil had
conductivities greater than 400 cm/hr while the soil at the 70 cm and
110 cm depths had conductivities near 200 cm/hr. Subsoils had much
lower conductivities, less than 60 cm/hr in most soil pits and less
than 10 cm/hr in some pits. A power curve regression analysis was
'S. used to relate the hydraulic conductivity (Y) and the mean percentage
of pores greater than . 294 mm in diameter (X) according to the equa-
Y 10, 040X2997 . The resulting r2 was .945. The percentage of
pores greater than . 294 mm in diameter was also found to change
abruptly between the 30 cm and 70 cm depths in most soil pits and
between the 110 cm and 130 cm depths in some soil pits.
The hydrologic properties were used to discuss the possible
nature of water movement through the soil and subsoil of the study
slope. The soil hydrologic properties and antecedent moisture conditions
were predicted to be conducive to vertical unsaturated translatory
flow. A zone of saturation was predicted to occur during winter
rainfall events above the subsoil horizon having extremely low conductivity
rates (above the 130 cm depth near soil pit 1). This zone of
saturation was predicted to be the most probable zone of lateral water
movement in the form of saturated translatory flow.
Data from a soil…
Advisors/Committee Members: Harr, R. Dennis (advisor).
Subjects/Keywords: Forest soils
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APA (6th Edition):
Ranken, D. W. (1974). Hydrologic properties of soil and subsoil on a steep, forested slope. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/9767
Chicago Manual of Style (16th Edition):
Ranken, Darrel Wesley. “Hydrologic properties of soil and subsoil on a steep, forested slope.” 1974. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/9767.
MLA Handbook (7th Edition):
Ranken, Darrel Wesley. “Hydrologic properties of soil and subsoil on a steep, forested slope.” 1974. Web. 07 Mar 2021.
Vancouver:
Ranken DW. Hydrologic properties of soil and subsoil on a steep, forested slope. [Internet] [Masters thesis]. Oregon State University; 1974. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/9767.
Council of Science Editors:
Ranken DW. Hydrologic properties of soil and subsoil on a steep, forested slope. [Masters Thesis]. Oregon State University; 1974. Available from: http://hdl.handle.net/1957/9767
Oregon State University
6.
Whitaker, Carol Anne.
Restoring productivity of compacted forest soils with tillage.
Degree: MS, Forest Engineering, 1983, Oregon State University
URL: http://hdl.handle.net/1957/9892
► Tillage of forest soils compacted by ground-based logging systems is a practice that is becoming widely accepted in the Pacific Northwest. However, past research has…
(more)
▼ Tillage of
forest soils compacted by ground-based logging systems is a practice that is becoming widely accepted in the Pacific Northwest. However, past research has failed to adequately define the conditions and specifications that particular tillage operations should meet in order to produce the maximum growth response from planted seedlings. The objective of this study is to quantify the early growth response of conifer seedlings to altered soil conditions produced by conventional ripping practices. To achieve the stated objective, a field study and a growth chamber study were implemented. A small tractor equipped with two 58-cm long ripper teeth spaced 140 cm apart performed the tillage on compacted gravelly loam
soils in the Cascade Mountains of southwestern Oregon. Conditions for both studies included
undisturbed soil, compacted soil in skid trails, and ripped soil in skid trails. Fifty-nine soil cores (15 cm in diameter by 32 cm long) were extracted from each treatment as growth media for the growth chamber study. Preliminary results from the field study shoved no significant differences in height growth or diameter growth of planted 2-0 bare root Douglas-fir (Pseudotsuga menziesii (Nirb.) Franco) seedlings after two years, even though soil bulk density and strength were significantly different and depth of compaction extended to 40 cm. It is possible that improper handling of seedlings either in the nursery or during planting has retarded development to the point that planting shock is overriding any effects.due to soil treatment. This phase of the study will be continued for another four years, so
treatment effects may yet appear. The growth chamber study included observations on Douglas-fir and white fir (Abies concolor) seedlings grown from seed for 226 days. At 148 days, the Douglas-fir seedlings growing in tilled soil showed a 44 percent improvement in height growth compared to seedlings growing in compacted soil. Differences between means were statistically significant at p = 0.051 level. Differences between means for white fir were statistically significant at p = 0.074 level. Significant differences in root development were evident for both species at the end of 226 days. Dry root weight found in the top 20 cm of tilled soil for white fir was 61 percent greater than for trees growing in compacted soil. For Douglas-fir, a 42 percent increase was noted. These differences reflect the influence of aggregate strength rather than bulk density since the latter values for soil in the cores were not significantly different as a result of disturbance from sampling and handling. It was postulated that seedlings growing in tilled soil with their more extensive root systems would fare better under Stressed conditions than seedlings
growing in compacted soil.
Advisors/Committee Members: Froehlich, Henry A. (advisor).
Subjects/Keywords: Forest soils
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APA (6th Edition):
Whitaker, C. A. (1983). Restoring productivity of compacted forest soils with tillage. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/9892
Chicago Manual of Style (16th Edition):
Whitaker, Carol Anne. “Restoring productivity of compacted forest soils with tillage.” 1983. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/9892.
MLA Handbook (7th Edition):
Whitaker, Carol Anne. “Restoring productivity of compacted forest soils with tillage.” 1983. Web. 07 Mar 2021.
Vancouver:
Whitaker CA. Restoring productivity of compacted forest soils with tillage. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/9892.
Council of Science Editors:
Whitaker CA. Restoring productivity of compacted forest soils with tillage. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/9892
Oregon State University
7.
Newman, Joseph Paul.
Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores.
Degree: MS, Forest Resources, 1998, Oregon State University
URL: http://hdl.handle.net/1957/10353
► Effects of three mulches of tree foliage and twigs (red alder, Douglas-fir, and salal) and homogenized, partially decomposed material (forest floor) on soil macronutrients (Ca,…
(more)
▼ Effects of three mulches of tree foliage and twigs (red alder, Douglas-fir, and
salal) and homogenized, partially decomposed material (
forest floor) on soil macronutrients
(Ca, K, Mg, P, NO3, and NH4) were evaluated in the summer of 1997. These
effects were measured with buried, coated ion-exchange resin bags at two different times
(2 and 12 weeks) and at two different depths (2 and 15 cm) in homogenized soil cores.
Over the time of this study various mulches had no significantly different impact
on nutrient ions sorbed on the buried resins. The results indicated that in the early stages
of decomposition, chemical differences in the plant material evaluated do not
differentially influence soluble nutrients sorbed on buried resins. However, some of this
lack of difference may have been due to the preparation of the mulches. The preparation
included chopping and shredding, which may have eliminated differences that exist in a
more natural setting. The effect of
forest floor material was significant on three of six
response variables. The interaction of
forest floor and mulch was significant for all
variables except K. Whether the interaction decreased or increased the mean amount of a
given response variable was dependent on the type of mulch material. The exception was
NO3, which in all cases increased in the presence of
forest floor in combination with
mulch. The results indicate that microbial populations that reside in the
forest floor
interact differently with the types of plant mulches placed over them.
The effect of time was significant for all response variables with K, Ca, and Mg
responding in a proportional manner. Nitrate and ammonium concentrations increased
exponentially over time, which indicated a rather vigorous biological population involved
in decomposition of nitrogen-containing organic compounds.
The effect of depth was significant for all variables except for P. More nutrients
accumulated at the 15 cm depth than at the 2 cm depth, which was not expected. This
possibly indicates high immobilization due to microbes at the surface. The results of P
may have been due to the type of resin used and the pH of the soil cores.
The results suggest that
forest floor material has more influence with above
ground additions of soil macro-nutrients than fresh plant material. However, the detected
interactions of these two types of materials suggest that ion cycling can be influenced
very early in the litter decomposition process.
A second study tested the effect of saturated soil coated resin bags versus non-coated
bags. The results strongly suggest that the effect of coating resin bags with a thin
slurry of saturated soil paste significantly decreases variation in tests of Ca, Mg, NO3, and
NH4. The minimal amount of work with this procedure suggests that it is advantageous
for evaluating most macro-nutrients with resin bags, particularly NO3 and NH4.
Advisors/Committee Members: Boyle, James R. (advisor).
Subjects/Keywords: Forest soils
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APA (6th Edition):
Newman, J. P. (1998). Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/10353
Chicago Manual of Style (16th Edition):
Newman, Joseph Paul. “Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores.” 1998. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/10353.
MLA Handbook (7th Edition):
Newman, Joseph Paul. “Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores.” 1998. Web. 07 Mar 2021.
Vancouver:
Newman JP. Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores. [Internet] [Masters thesis]. Oregon State University; 1998. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/10353.
Council of Science Editors:
Newman JP. Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores. [Masters Thesis]. Oregon State University; 1998. Available from: http://hdl.handle.net/1957/10353
Oregon State University
8.
Dyrness, C. T.
The effect of logging and slash burning on certain physical properties of forest soils.
Degree: MS, Soils, 1956, Oregon State University
URL: http://hdl.handle.net/1957/11213
Subjects/Keywords: Forest soils
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APA (6th Edition):
Dyrness, C. T. (1956). The effect of logging and slash burning on certain physical properties of forest soils. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/11213
Chicago Manual of Style (16th Edition):
Dyrness, C T. “The effect of logging and slash burning on certain physical properties of forest soils.” 1956. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/11213.
MLA Handbook (7th Edition):
Dyrness, C T. “The effect of logging and slash burning on certain physical properties of forest soils.” 1956. Web. 07 Mar 2021.
Vancouver:
Dyrness CT. The effect of logging and slash burning on certain physical properties of forest soils. [Internet] [Masters thesis]. Oregon State University; 1956. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/11213.
Council of Science Editors:
Dyrness CT. The effect of logging and slash burning on certain physical properties of forest soils. [Masters Thesis]. Oregon State University; 1956. Available from: http://hdl.handle.net/1957/11213
Oregon State University
9.
Parke, Jennifer Lee.
Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California.
Degree: PhD, Botany and Plant Pathology, 1982, Oregon State University
URL: http://hdl.handle.net/1957/42020
Subjects/Keywords: Forest soils
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APA (6th Edition):
Parke, J. L. (1982). Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/42020
Chicago Manual of Style (16th Edition):
Parke, Jennifer Lee. “Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California.” 1982. Doctoral Dissertation, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/42020.
MLA Handbook (7th Edition):
Parke, Jennifer Lee. “Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California.” 1982. Web. 07 Mar 2021.
Vancouver:
Parke JL. Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California. [Internet] [Doctoral dissertation]. Oregon State University; 1982. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/42020.
Council of Science Editors:
Parke JL. Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California. [Doctoral Dissertation]. Oregon State University; 1982. Available from: http://hdl.handle.net/1957/42020
Oregon State University
10.
Hayden, John.
Low molecular weight organic acids in forest soils.
Degree: MS, Soil Science, 1999, Oregon State University
URL: http://hdl.handle.net/1957/33172
► Two studies concerning low molecular weight organic acids in soils were conducted. In the first study, anion exclusion chromatography was used to separate and identify…
(more)
▼ Two studies concerning low molecular weight organic acids in
soils
were conducted. In the first study, anion exclusion chromatography was
used to separate and identify 12 common organic acids, and the accuracy,
precision and detection limits of the method were determined. The method
was found to be sensitive and accurate to between 1.5 and 9 μM,
depending on the acid in question. The stability of the selected acids was
examined, and the large concentration changes observed underscore the
importance of timely analysis of soil solutions. No significant interferences
were encountered in the analysis of two soil solutions. In the second
study, the reaction of a
forest soil with oxalic acid at four concentrations
was monitored for a period of 96 hours. A large release of aluminum,
sulfate, and phosphate was observed, with the greatest release occurring
with the highest concentration of added oxalate. Solution aluminum
increased by up to a factor of twenty, and though [Al³⁺] values were
consistent with control by thermodynamic equilibrium with an amorphous
aluminum oxide phase, exchangeable Al appeared to be the source of the
increase. Sulfate increased abruptly at the start of the reaction and
continued to rise, though more slowly, throughout the study. Solution
phosphate was increased by up to four times and was maintained at the
elevated level throughout the study. Changes in both sulfate and
phosphate concentrations were attributed directly to exchange with oxalate.
The persistence of elevated phosphate concentrations after 96 hours
indicates that the effects of oxalate production by mycorrhizae could have
lasting effects on the nutrient status of a soil.
Advisors/Committee Members: Baham, John E. (advisor).
Subjects/Keywords: Forest soils
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APA (6th Edition):
Hayden, J. (1999). Low molecular weight organic acids in forest soils. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/33172
Chicago Manual of Style (16th Edition):
Hayden, John. “Low molecular weight organic acids in forest soils.” 1999. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/33172.
MLA Handbook (7th Edition):
Hayden, John. “Low molecular weight organic acids in forest soils.” 1999. Web. 07 Mar 2021.
Vancouver:
Hayden J. Low molecular weight organic acids in forest soils. [Internet] [Masters thesis]. Oregon State University; 1999. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/33172.
Council of Science Editors:
Hayden J. Low molecular weight organic acids in forest soils. [Masters Thesis]. Oregon State University; 1999. Available from: http://hdl.handle.net/1957/33172
Oregon State University
11.
Gallo, Adrian Carlos.
Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests.
Degree: MS, Sustainable Forest Management, 2016, Oregon State University
URL: http://hdl.handle.net/1957/60087
► Forest soils contain a substantial portion of global terrestrial carbon stores. Forest management can influence the soil carbon pool and how soil organic matter functions.…
(more)
▼ Forest soils contain a substantial portion of global terrestrial carbon stores.
Forest management can influence the soil carbon pool and how soil organic matter functions. The long-term productivity of forests is an ongoing goal where land managers utilize biomass and timber. A site-specific understanding of intensively managed forests can ensure achievements of this goal. Within a managed
forest in the western Oregon Cascades, treatments were installed to harvest three levels of biomass, with and without compaction, to monitor impacts to growing season characteristics of Douglas-fir roots. Soil temperature and moisture conditions were continuously monitored from 10 to 100cm depth, and three sources of soil respiration were measured monthly for two years immediately following treatments. Negligible differences in the length of growing season were detected, however the daily-10cm average, maximum, and diel flux of soil temperatures significantly increased by 1.5, 2.7, and 2.5°C, respectively, with increasing biomass harvesting. Organic matter removal strongly influenced growing season soil characteristics down to a 100cm depth. Diel temperature flux at 100cm for the least and most impacted treatments were 5.7 and 7.8°C, respectively, a magnitude equivalent to seasonal shifts in soil temperature at the same depth. In spite of favorable temperature and moisture conditions with less organic matter left on the surface, soil respiration was moderately higher on bole only harvests. A priming effect may explain why these sites with more surface biomass, although significantly cooler, had the highest rates of soil respiration. The combination of increased temperatures throughout the soil profile after
forest harvesting, and higher additions of dissolved organic matter from
forest residuals, could have an impact on deep soil carbon. These responses have implications for long-term nutrient cycling that have yet to be elucidated for deeper
soils; but this should be considered when land managers are planning
forest fertilization and rotation lengths.
Advisors/Committee Members: Hatten, Jeff (advisor), Lajtha, Kate (committee member).
Subjects/Keywords: Soil; Forest soils – Cascade Range
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APA (6th Edition):
Gallo, A. C. (2016). Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/60087
Chicago Manual of Style (16th Edition):
Gallo, Adrian Carlos. “Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests.” 2016. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/60087.
MLA Handbook (7th Edition):
Gallo, Adrian Carlos. “Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests.” 2016. Web. 07 Mar 2021.
Vancouver:
Gallo AC. Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/60087.
Council of Science Editors:
Gallo AC. Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/60087
Oregon State University
12.
Neal, John Lloyd.
Influence of slash burning on microbial population and activities in a Douglas-fir forest soil.
Degree: MS, Microbiology, 1963, Oregon State University
URL: http://hdl.handle.net/1957/49576
Subjects/Keywords: Forest soils
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APA (6th Edition):
Neal, J. L. (1963). Influence of slash burning on microbial population and activities in a Douglas-fir forest soil. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/49576
Chicago Manual of Style (16th Edition):
Neal, John Lloyd. “Influence of slash burning on microbial population and activities in a Douglas-fir forest soil.” 1963. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/49576.
MLA Handbook (7th Edition):
Neal, John Lloyd. “Influence of slash burning on microbial population and activities in a Douglas-fir forest soil.” 1963. Web. 07 Mar 2021.
Vancouver:
Neal JL. Influence of slash burning on microbial population and activities in a Douglas-fir forest soil. [Internet] [Masters thesis]. Oregon State University; 1963. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/49576.
Council of Science Editors:
Neal JL. Influence of slash burning on microbial population and activities in a Douglas-fir forest soil. [Masters Thesis]. Oregon State University; 1963. Available from: http://hdl.handle.net/1957/49576
Oregon State University
13.
Urie, Dean Howard.
Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range.
Degree: MS, Soils, 1958, Oregon State University
URL: http://hdl.handle.net/1957/49515
Subjects/Keywords: Forest soils
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APA (6th Edition):
Urie, D. H. (1958). Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/49515
Chicago Manual of Style (16th Edition):
Urie, Dean Howard. “Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range.” 1958. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/49515.
MLA Handbook (7th Edition):
Urie, Dean Howard. “Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range.” 1958. Web. 07 Mar 2021.
Vancouver:
Urie DH. Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range. [Internet] [Masters thesis]. Oregon State University; 1958. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/49515.
Council of Science Editors:
Urie DH. Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range. [Masters Thesis]. Oregon State University; 1958. Available from: http://hdl.handle.net/1957/49515
Oregon State University
14.
Hu, Lily Jho-yuan.
Soluble carbon and respiration of forest humus.
Degree: MS, Soils, 1968, Oregon State University
URL: http://hdl.handle.net/1957/46483
► Humus is one of the important factors controlling the soil formation process. The nutrients released from it during the decomposition process also affect the growth…
(more)
▼ Humus is one of the important factors controlling the soil
formation process. The nutrients released from it during the decomposition
process also affect the growth and reproduction of the
forest. The type of humus formed is influenced by the nature of the
forest litter and the environment in which it is decomposed.
The whole complex of processes by which plant residues are
transformed and finally converted into humus is the result of the
combined activity of associations of microbes exhibiting diverse biochemical
functions. The respiratory activity in the
forest floor decreases
with progressive stages of decomposition and humification.
This reflects the chemical composition and availability of the remaining
carbon compounds as energy source material. It appeared
that the content of total soluble carbon might serve as an index of
the stage of decomposition and humification.
As a mild oxidizing reagent, potassium persulfate oxidizes
only the water soluble materials in the temperature range of 70°C
to 75°C. A water extraction-potassium persulfate oxidation technique
was used for the estimation of total soluble carbon content of
forest
floor materials. Extraction time and the efficiency of the persulfate
oxidation of the extract were also investigated.
Continuous aeration and electrolytic respirometer techniques
were used for the respiration study and for comparison with the
persulfate oxidation technique.
A variety of representative
forest floor materials from different
forest types in Eastern North America and the Coast Range of
Oregon were studied both for respiratory activity and for water soluble
carbon content. A highly significant positive correlation was
found between levels of water soluble carbon and CO₂ evolution in
these samples.
In the areas sampled in the eastern United States and Canada,
a majority of the well humified layers (H) gave respiratory carbon/soluble carbon ratios of 1. Most of the less humified samples
showed ratios near 1.4. Materials from Douglas-fir forests having
low soluble carbon levels had considerably greater respiratory
carbon/soluble carbon ratios than the low soluble carbon materials
from eastern forests.
The advantages of the persulfate oxidation method over the
respiration method are that it is less time consuming, few materials are required and better control can be exercised. Since the water
soluble carbon as determined by the persulfate oxidation test may
be expressed in terms of respiration, where good correlations are
established, it appears that either the soluble carbon value itself or
the correlated respiratory activity may be used as an indicator of the
stage of humification. Thus a much more rapid, less tedious means
of evaluating the status of
forest floor materials is available.
Advisors/Committee Members: Youngberg, C. T. (advisor), Klein, D. A. (committee member).
Subjects/Keywords: Forest soils
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APA (6th Edition):
Hu, L. J. (1968). Soluble carbon and respiration of forest humus. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/46483
Chicago Manual of Style (16th Edition):
Hu, Lily Jho-yuan. “Soluble carbon and respiration of forest humus.” 1968. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/46483.
MLA Handbook (7th Edition):
Hu, Lily Jho-yuan. “Soluble carbon and respiration of forest humus.” 1968. Web. 07 Mar 2021.
Vancouver:
Hu LJ. Soluble carbon and respiration of forest humus. [Internet] [Masters thesis]. Oregon State University; 1968. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/46483.
Council of Science Editors:
Hu LJ. Soluble carbon and respiration of forest humus. [Masters Thesis]. Oregon State University; 1968. Available from: http://hdl.handle.net/1957/46483
Oregon State University
15.
Collins, Dana Huntley.
A method of forest soil-site quality investigation.
Degree: MS, Forestry, 1956, Oregon State University
URL: http://hdl.handle.net/1957/19337
Subjects/Keywords: Forest soils
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APA (6th Edition):
Collins, D. H. (1956). A method of forest soil-site quality investigation. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/19337
Chicago Manual of Style (16th Edition):
Collins, Dana Huntley. “A method of forest soil-site quality investigation.” 1956. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/19337.
MLA Handbook (7th Edition):
Collins, Dana Huntley. “A method of forest soil-site quality investigation.” 1956. Web. 07 Mar 2021.
Vancouver:
Collins DH. A method of forest soil-site quality investigation. [Internet] [Masters thesis]. Oregon State University; 1956. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/19337.
Council of Science Editors:
Collins DH. A method of forest soil-site quality investigation. [Masters Thesis]. Oregon State University; 1956. Available from: http://hdl.handle.net/1957/19337
Michigan State University
16.
Harlan, Richard L.
Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation.
Degree: PhD, Department of Forestry, 1967, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:44280
Subjects/Keywords: Forest soils
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APA (6th Edition):
Harlan, R. L. (1967). Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:44280
Chicago Manual of Style (16th Edition):
Harlan, Richard L. “Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation.” 1967. Doctoral Dissertation, Michigan State University. Accessed March 07, 2021.
http://etd.lib.msu.edu/islandora/object/etd:44280.
MLA Handbook (7th Edition):
Harlan, Richard L. “Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation.” 1967. Web. 07 Mar 2021.
Vancouver:
Harlan RL. Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation. [Internet] [Doctoral dissertation]. Michigan State University; 1967. [cited 2021 Mar 07].
Available from: http://etd.lib.msu.edu/islandora/object/etd:44280.
Council of Science Editors:
Harlan RL. Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation. [Doctoral Dissertation]. Michigan State University; 1967. Available from: http://etd.lib.msu.edu/islandora/object/etd:44280
University of Montana
17.
Mandzak, John Michael.
Progressive acid dissolution technique| A new direction in the study of forest soils.
Degree: MA, 1974, University of Montana
URL: https://scholarworks.umt.edu/etd/3322
Subjects/Keywords: Forest soils; Forest soils Research
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APA (6th Edition):
Mandzak, J. M. (1974). Progressive acid dissolution technique| A new direction in the study of forest soils. (Masters Thesis). University of Montana. Retrieved from https://scholarworks.umt.edu/etd/3322
Chicago Manual of Style (16th Edition):
Mandzak, John Michael. “Progressive acid dissolution technique| A new direction in the study of forest soils.” 1974. Masters Thesis, University of Montana. Accessed March 07, 2021.
https://scholarworks.umt.edu/etd/3322.
MLA Handbook (7th Edition):
Mandzak, John Michael. “Progressive acid dissolution technique| A new direction in the study of forest soils.” 1974. Web. 07 Mar 2021.
Vancouver:
Mandzak JM. Progressive acid dissolution technique| A new direction in the study of forest soils. [Internet] [Masters thesis]. University of Montana; 1974. [cited 2021 Mar 07].
Available from: https://scholarworks.umt.edu/etd/3322.
Council of Science Editors:
Mandzak JM. Progressive acid dissolution technique| A new direction in the study of forest soils. [Masters Thesis]. University of Montana; 1974. Available from: https://scholarworks.umt.edu/etd/3322
Michigan State University
18.
Baribault, Thomas Wyatt.
Revisiting soil resource limitation : resource predictors of tree growth and forest productivity change across ecological gradients.
Degree: 2011, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:698
► Thesis Ph. D. Michigan State University. Forestry ; Ecology, Evolutionary Biology, and Behavior 2011.
Multiple soil resources could limit aboveground net primary production (ANPP) and…
(more)
▼ Thesis Ph. D. Michigan State University. Forestry ; Ecology, Evolutionary Biology, and Behavior 2011.
Multiple soil resources could limit aboveground net primary production (ANPP) and individual tree growth, but most studies have focused on growth as a function of nitrogen (N) availability in temperate forests and phosphorus (P) availability in tropical forests. In addition to soil resource availability, individual tree growth is affected by competition among neighboring trees, but relationships of local-scale soil resources to tree growth have not been assessed in conjunction with competition. I hypothesized that temperate tree diameter growth and ANPP are correlated with soil base cation availability as well as N. Similarly, tropical tree diameter growth and site-level basal area increment (BAI) should be correlated not only with soil P, but also with the base cations. Furthermore, I hypothesized that the relative effect on diameter growth of competition between neighboring trees strengthens if plant interactions are determined by a tolerance-competitiveness tradeoff. Alternately, competition should be important at all sites if plant interactions are governed by species' relative abilities to most efficiently exploit available soil resources. Finally, I hypothesized that diameter growth, leaf nutrient content, and photosynthesis should increase in response to fertilization of individual temperate forest trees with calcium (Ca) and / or N. To address these hypotheses, I tested correlations between growth and production and a suite of resources including water, multiple measures of inorganic N availability, phosphate (PO4), total P, and extractable base cations (Ca, potassium (K), magnesium (Mg)), in northern hardwood forests distributed across a multi-resource gradient and in lowland wet tropical forests growing across a strong soil P gradient. I also developed individual-based growth models as functions of local neighborhood index and fine-scale estimates of soil resources for single species in both biomes and a variety of functional groups from the tropical sites. In temperate forests, wood productivity was strongly correlated with soil Ca at low-fertility sites but with N at high fertility, whereas leaf production was correlated with N across all sites. Diameter growth of individual temperate trees was unrelated to soil resource availability or competition among species dominant at low-fertility sites; for species dominant at high-fertility sites, diameter growth was related to several soil resources (Ca, K, N), and demonstrated strong correlations with local neighborhood indices. Across tropical sites, individual diameter growth and site mean BAI were correlated with both base cations and total P. The Fabaceae (legumes) showed extremely weak correlation of individual growth to soil resources, and no relationship of site mean BAI to resources. In contrast, the Arecaceae (palms) and species with low wood density exhibited robust correlations of BAI to total soil P, while BAI was correlated with soil…
Advisors/Committee Members: Kobe, Richard K, Grandy, Stuart, Rothstein, David E, Walters, Michael B.
Subjects/Keywords: Trees – Growth; Forest soils; Forest ecology; Forest productivity; Forestry; Ecology
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APA (6th Edition):
Baribault, T. W. (2011). Revisiting soil resource limitation : resource predictors of tree growth and forest productivity change across ecological gradients. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:698
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):
Baribault, Thomas Wyatt. “Revisiting soil resource limitation : resource predictors of tree growth and forest productivity change across ecological gradients.” 2011. Thesis, Michigan State University. Accessed March 07, 2021.
http://etd.lib.msu.edu/islandora/object/etd:698.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Baribault, Thomas Wyatt. “Revisiting soil resource limitation : resource predictors of tree growth and forest productivity change across ecological gradients.” 2011. Web. 07 Mar 2021.
Vancouver:
Baribault TW. Revisiting soil resource limitation : resource predictors of tree growth and forest productivity change across ecological gradients. [Internet] [Thesis]. Michigan State University; 2011. [cited 2021 Mar 07].
Available from: http://etd.lib.msu.edu/islandora/object/etd:698.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Baribault TW. Revisiting soil resource limitation : resource predictors of tree growth and forest productivity change across ecological gradients. [Thesis]. Michigan State University; 2011. Available from: http://etd.lib.msu.edu/islandora/object/etd:698
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
19.
Borchers, Jeffrey G.
Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon.
Degree: PhD, Forest Science, 1990, Oregon State University
URL: http://hdl.handle.net/1957/10183
► The effect of physical factors such as soil structure, bulk density, parent material, and topographic variables on soil C and N dynamics and ectomycorrhizal inocululu…
(more)
▼ The effect of physical factors such as soil structure, bulk density, parent material, and topographic variables on soil C and N dynamics and ectomycorrhizal inocululu
potential in forests of southwest Oregon were investigated In the high-elevation white fir (Abies concolor (Gord. & Glend.) Lindl.) zone, two old poorly-vegetated clearcuts with different soil textures (sandy loam and silt loam) were compared with adjacent uncut areas. Significant differences in soil C and N were not detected at either site, but the site with silt loam soil had 20-25% lower C and N concentrations in several particle size fractions. Compared to adjacent forests, anaerobically mineralizable N (Nmin) was lower only in the clearcut with sandy loam soil. A larger pool of physically-stabilized but chemically labile N probably sustained Nmin levels on the clearcut with finer-textured soil. In another investigation on these sites, Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were used to bioassay six soil particlesize
fractions for ectoniycorrhiza (EM) formation. Six major EM types were found to be heterogeneously distributed among size fractions. Increased colonization by one EM
type following mechanical disaggregation of soil from a clearcut indicated propagules had a "clumpy" distribution in soil or had been suppressed by actinomycete activity. A
separate investigation in a lower elevation vegetation zone (the mixed evergreen zone) of southwest Oregon compared soil and
forest floor C and N in forests and 5-year-old
clearcuts that had been broadcast-burned (BB) or hand piled-and-burned (PB). Total C and N, and Nmin were determined variously in litter, F-layer, 0-5 cm soil, and 5-15 cm soil. In clearcuts, decreases in C and N stored in these layers exceeded amounts typically removed by harvest. BB clearcuts had significantly lower Nmin levels in the 0-5 cm layer compared to adjacent forests. The disappearance of F layers from BB and PB clearcuts represented the largest loss of N from the layers we sampled. The proportion of N lost from these layers was related by regression of C:N ratios of the two soil layers. This proportion and both C N ratios were in turn correlated with slope, aspect, and soil bulk density. We incorporated the
relationships into a conceptual model depicting a complex topographic influence on N losses following
forest disturbance.
Advisors/Committee Members: Perry, David A. (advisor), Sollins, Phil (committee member).
Subjects/Keywords: Forest soils – Oregon
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APA (6th Edition):
Borchers, J. G. (1990). Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/10183
Chicago Manual of Style (16th Edition):
Borchers, Jeffrey G. “Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon.” 1990. Doctoral Dissertation, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/10183.
MLA Handbook (7th Edition):
Borchers, Jeffrey G. “Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon.” 1990. Web. 07 Mar 2021.
Vancouver:
Borchers JG. Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon. [Internet] [Doctoral dissertation]. Oregon State University; 1990. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/10183.
Council of Science Editors:
Borchers JG. Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon. [Doctoral Dissertation]. Oregon State University; 1990. Available from: http://hdl.handle.net/1957/10183
Oregon State University
20.
Strand, Robert Fenton.
Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon.
Degree: PhD, Silviculture, 1964, Oregon State University
URL: http://hdl.handle.net/1957/11048
► In 1957 three Douglas-fir stands (15-, 25-, and 40-year-old age classes) were selected on a tree farm in the Cascade foothills of northwestern Oregon to…
(more)
▼ In 1957 three Douglas-fir stands (15-, 25-, and 40-year-old age classes) were selected on a tree farm in the Cascade foothills of
northwestern Oregon to study factors affecting site productivity. Soil-moisture, soil-temperature and seasonal radial- growth pattern measurements were made with a Colman moisture meter and a dial gauge dendrometer on thinned and unthinned subareas. Soil temperatures were significantly increased by thinning in each stand. This effect decreased with soil depth and increased with
increasing intensity of thinning. Root distribution studies eight years after thinning showed that a heavily thinned stand had relatively few roots in the lower profile between the remaining trees, in contrast to the complete distribution throughout the profile in the unthinned
subareas. This would indicate less overall soil-moisture depletion with thinning since the available soil-moisture levels measured within the fully rooted zone were not significantly different for the various thinning treatments. As expected radial growth increased significantly with increasing intensity of thinning. The amount and proportion of late season growth tended to increase with increasing thinning intensity although the observed differences were not statistically significant. Late season growth, however, was significantly increased by increasing crown position (intermediate to dominant) regardless of thinning treatment. Irrigation of selected trees at a ridgetop area extended the spring maximum radial growth rate throughout most of the summer. On comparable non-irrigated trees growth retardation was detectable in the range of one-half to one atmospheres of soil-moisture tension. Growth cessation occurred when soil-moisture-tension values reached the two to five atmosphere range. Irrigation of trees in a young hillside bench stand slightly increased radial growth rate during the first two years, but decreased growth in relation to non-irrigated
trees during the next two years apparently as a result of excess irrigation. Fertilization with high rates of nitrogen and phosphorus fertilizers increased the late season radial growth of irrigated and non-irrigated trees in both stands. The late season response is attributed to a dwindling supply of mineralized soil nitrogen in the late summer and early fall. Irrigation and fertilization combined gave approximately additive increases in radial growth which ranged from 35 to 60 percent. It is hypothesized that potential radial growth (except for short periods at the start and end of the growing season) is equivalent to the maximum spring rate. Departures from this maximum result from deficiencies in moisture, mineral nutrient elements, or heat. Thus the maximum growth rate is proposed as an important characteristic,
reflecting the potential carbohydrate productive capacity of the crown when raw material levels exceed rate limiting supplies. The fertility status of each research area was assessed by various means including soil chemical and physical analyses, sampling and chemical…
Subjects/Keywords: Forest soils – Oregon
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APA (6th Edition):
Strand, R. F. (1964). Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/11048
Chicago Manual of Style (16th Edition):
Strand, Robert Fenton. “Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon.” 1964. Doctoral Dissertation, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/11048.
MLA Handbook (7th Edition):
Strand, Robert Fenton. “Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon.” 1964. Web. 07 Mar 2021.
Vancouver:
Strand RF. Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon. [Internet] [Doctoral dissertation]. Oregon State University; 1964. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/11048.
Council of Science Editors:
Strand RF. Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon. [Doctoral Dissertation]. Oregon State University; 1964. Available from: http://hdl.handle.net/1957/11048
Oregon State University
21.
Flint, Alan L.
Soil physical properties and available water capacity of southwest Oregon forest soils.
Degree: MS, Soil Science, 1983, Oregon State University
URL: http://hdl.handle.net/1957/42015
► Measurements for water retention calculations and physical characterization were made on skeletal and non-skeletal soils in southwest Oregon. A new bulk density sampler was designed…
(more)
▼ Measurements for water retention calculations and physical
characterization were made on skeletal and non-skeletal
soils in
southwest Oregon. A new bulk density sampler was designed for the
physical characterization of the steep, skeletal
soils commonly
encountered in this area. The new sampler and the techniques
required for the measurement and calculation of physical properties
and available water are presented.
The bead cone bulk density sampler is a modification of the
sand cone excavation technique. The design allows a sample volume (1.5 x 10⁷ mm³) large enough to include rock fragments up to 160
mm in diameter which is important due to the large spatial
variability of rock fragments. The bead cone is also designed to be
easily portable and operate effectively on slopes up to 100 percent.
A field test was conducted to compare bead cone and sand cone
sampling techniques and results. Total soil density, fine soil
density, rock fragment content and volumetric water content were
measured or calculated with no statistical difference observed
between the results obtained with the two samplers. On
soils where
slope or rock fragment size are not limiting for the sand cone both samplers work well: beyond these limits the bead cone is the
preferred technique.
Measurements of total soil density, fine soil density and rock
fragment content using the bead cone and a 76 mm diameter, 76 mm
length corer were compared on 30
soils in southwest Oregon. The
core method compared well for rock fragment contents below 15
percent. There was, however, little agreement in
soils with higher
rock fragment content due to physical impedance and the small volume
of the corer.
The bead cone sampler was used to aid in the characterization
of the physical properties of southwest Oregon.
Soils were assessed
at forty sites covering nine parent materials. The sites were
sampled for total bulk density, particle size distribution, dry
season water content and field capacity water content. The physical
properties of the rock fragments significantly influence the
calculation of seasonal water content and total available water.
The porosity of the rock fragments ranges from 10 to 50 percent and
contributed an average 15 percent of the total available water. The
porosity of rock fragments must also be included in the calculation
of rock fragment volume and fine soil density. The fine soil
averaged over 12 percent organic matter with 50 percent of mineral
soil being sand.
Linear models using these soil physical properties were then
used to predict water content at field capacity, seasonal low and
total available water. The use of probablistic prediction models to
estimate available water content may be valuable for long range management planning but appear to be of little value in management
of specific sites. It was concluded that, using the methods
presented, direct measurements of available water would be easier
and more accurate than the models used for prediction.
Advisors/Committee Members: Childs, Stuart W. (advisor), Lavender, Denis (committee member).
Subjects/Keywords: Forest soils – Oregon
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APA (6th Edition):
Flint, A. L. (1983). Soil physical properties and available water capacity of southwest Oregon forest soils. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42015
Chicago Manual of Style (16th Edition):
Flint, Alan L. “Soil physical properties and available water capacity of southwest Oregon forest soils.” 1983. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/42015.
MLA Handbook (7th Edition):
Flint, Alan L. “Soil physical properties and available water capacity of southwest Oregon forest soils.” 1983. Web. 07 Mar 2021.
Vancouver:
Flint AL. Soil physical properties and available water capacity of southwest Oregon forest soils. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/42015.
Council of Science Editors:
Flint AL. Soil physical properties and available water capacity of southwest Oregon forest soils. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/42015
Oregon State University
22.
Wicherski, Bruce P.
Analysis of variability of some forest soils in southwestern Oregon.
Degree: MS, Soil Science, 1980, Oregon State University
URL: http://hdl.handle.net/1957/42461
► The variability of selected physical, chemical, and morphological soil properties in two landtype mapping units on'the Rogue River National Forest in southwestern Oregon was studied.…
(more)
▼ The variability of selected physical, chemical, and morphological
soil properties in two landtype mapping units on'the Rogue River National
Forest in southwestern Oregon was studied.
The objectives of the study were (i) to quantify soil variability
in several soil resource inventory mapping units, (ii) to explore methods
of describing soil variability in order to make soil map information more
useful to the map user, and (iii) to attempt to identify sources of
variability.
Two mapping units, in the Siskyou and Cascade Mountains, were
selected to represent extremes of internal variability. Eight delineations
of each map unit were sampled with randomly located transects for
a total of 40 sites per map unit.
Soil properties exhibited various types of frequency distributions.
Normal, skewed, and multi-modal distributions were observed. Nearly half
the property-horizon combinations measured in both map units had normal
distributions. Chemical properties, such as extractable bases, were
consistently positively skewed or approximately log-normal. Square root
and logarithmic transformations of the data normalized these distributions
and stabilized the variance. These results suggested that for
multi-modal and badly skewed populations, assumption of a normal
distribution may lead to considerable error if the arithmetic mean and
standard deviation are used for predictive purposes.
Map unit 74 in the Siskyou Mountains was considered to be more
variable, over most properties measured, than map unit 33 from the
Cascades. For most properties coefficients of variation (CV) were higher,
the sample requirements to estimate population means were greater, and
the ranges were wider in map unit 74, as compared to map unit 33.
In both map units, chemical properties were more variable than
physical or morphological properties, which were about equal in their
variability.
The number of samples required to estimate the means of properties
varied widely and were often prohibitively large (264 for organic matter
in the surface of map unit 74). This number could be reduced if the
sampling scheme was stratified using estimates of within and between
delineation variance.
Between 50 and 75 percent of the total variation in most properties
of both map units occurred within delineations. This result is desireable
from a management and broad planning perspective and tends to support
the validity of the map units as designed and mapped.
When tested by analysis of variance, most properties in both map
units had significantly different delineation means. These differences
could often be traced to one particular delineation and were many times
not of practical significance.
Large or small changes in the values of most properties were found
to be as likely to occur at 660 foot separation distances as at 15 foot
distances. This tends to indicate a random distribution of variation,
when distance alone is considered, which could have important consequences when attempting to characterize soil properties for…
Advisors/Committee Members: Huddleston, J. Herbert (advisor).
Subjects/Keywords: Forest soils – Oregon
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APA (6th Edition):
Wicherski, B. P. (1980). Analysis of variability of some forest soils in southwestern Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42461
Chicago Manual of Style (16th Edition):
Wicherski, Bruce P. “Analysis of variability of some forest soils in southwestern Oregon.” 1980. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/42461.
MLA Handbook (7th Edition):
Wicherski, Bruce P. “Analysis of variability of some forest soils in southwestern Oregon.” 1980. Web. 07 Mar 2021.
Vancouver:
Wicherski BP. Analysis of variability of some forest soils in southwestern Oregon. [Internet] [Masters thesis]. Oregon State University; 1980. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/42461.
Council of Science Editors:
Wicherski BP. Analysis of variability of some forest soils in southwestern Oregon. [Masters Thesis]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/42461
Oregon State University
23.
Craigg, Terry Lee.
Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century.
Degree: PhD, Forest Engineering, 2016, Oregon State University
URL: http://hdl.handle.net/1957/59179
► Soils and other resource programs in both public land management agencies and private industry are continually being adapted to the challenges of evolving knowledge and…
(more)
▼ Soils and other resource programs in both public land management agencies and private industry are continually being adapted to the challenges of evolving knowledge and experience in the field of forestry. This dissertation explores new ways of thinking about and using
soils information in
forest planning and management, with a focus on Pacific Northwest lands. At the core of this work are the concepts of soil quality, in particular, the applications of inherent and dynamic soil quality.
These soil quality concepts can be used as both a planning tool to improve our understanding and assessment of land-use decisions and as an assessment tool to evaluate the sustainability of different management practices. The result is two very different types of soil interpretations based on inherent and dynamic soil quality concepts which are applied at different times and for different purposes during
forest planning and management.
Forest planning soil interpretations that are based upon inherent soil quality are used primarily to make land use allocations and related decisions. These interpretations are applied up-front in the
forest planning process and are based on the fact that different
soils vary widely in their inherent capacity to perform various ecological and utilitarian functions. By both recognizing different soil types in the local landscape and understanding how those various
soils naturally function, managers can use inherent soil interpretations to better match land management objectives to soil types that have a high capacity to meet those objectives. Matching soil potentials to the appropriate land management actions in this manner helps to assure management actions will be both attainable and sustainable over the long term.
Soil interpretations that are based upon dynamic soil quality differ from those based upon inherent soil quality in that dynamic soil interpretations are primarily used to assess the sustainability of management practices. These interpretations identify different
soils' resistance and resilience to disturbances and use soil-based indicators of key soil functions to make assessments of the effects of different disturbances.
A conceptual "
forest planning and management model" is presented that illustrates applications of these soil quality concepts in the
forest planning process. Concepts and practical applications of the conceptual model are illustrated in current
forest level planning projects within the US
Forest Service (FS) Region 6. Soil disturbance monitoring was also conducted in recently managed areas and used to both provide a practical procedure for monitoring soil porosity changes and to present a case for updating current directives and guidelines for FS Region 6 Soil Quality Standards.
It is my hope that this work will be of value to both soil scientists and other
forest resource specialists and managers. Perhaps one of the more significant contributions that may come of this work is that it may help soil scientists and others to be inspired through a better understanding…
Advisors/Committee Members: Adams, Paul W. (advisor), Loren, Kellogg (committee member).
Subjects/Keywords: soil quality; Forest soils – Northwest, Pacific
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APA (6th Edition):
Craigg, T. L. (2016). Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/59179
Chicago Manual of Style (16th Edition):
Craigg, Terry Lee. “Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century.” 2016. Doctoral Dissertation, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/59179.
MLA Handbook (7th Edition):
Craigg, Terry Lee. “Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century.” 2016. Web. 07 Mar 2021.
Vancouver:
Craigg TL. Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/59179.
Council of Science Editors:
Craigg TL. Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59179
Oregon State University
24.
Heichen, Rachel S.
Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades.
Degree: MS, Environmental Sciences, 2002, Oregon State University
URL: http://hdl.handle.net/1957/29971
► In this study, biological and chemical characteristics were determined for two high-elevation meadow-to-forest transitions located in the Central Oregon Cascades. The chloroform fumigation incubation method…
(more)
▼ In this study, biological and chemical characteristics were determined for
two high-elevation meadow-to-
forest transitions located in the Central Oregon
Cascades. The chloroform fumigation incubation method (CFIM) was used to
determine microbial biomass C(MBC) and the N flush due to fumigation (NF), and
meadow values were compared to
forest values for each. Meadow and
forest MBC
values were also compared for estimates of MBC determined with microscopy and
these values were compared to CFIM estimates. Net N mineralization and C
mineralization were determined for an 85-d incubation period and used as a
measure of labile C and N. Microbial biomass C and NF were then compared to
these labile pools in order to investigate the relationship between the amount of
each nutrient stored in biomass and the magnitude of the respective labile nutrient
pool for each. Long-term and short-term net N mineralization rates and C/N ratios
were also compared for meadow and
forest soils, and the relationship between
these two characteristics was examined.
In general, microbial biomass estimates made with the CFIM method did not
show any significant differences between meadow and
forest soils. Mean MBC for
both sites as determined by CFIM was estimated to be 369 and 406 μg C g⁻¹ soil in
meadow and
forest soils, respectively. Mean NF was estimated to be 37 and 56 μg
N g⁻¹ soil in meadow and
forest soils, respectively. MBC estimates made using
microscopy showed biomass C to be greater in the
forest than in the meadow.
Mean MBC as determined by microscopy was estimated to be 529 and 1846 μg C
g⁻¹ soil in meadow and
forest soils, respectively. The NF measured as a percentage
of the net N mineralized over 85 d was significantly greater in the
forest than in the
meadow
soils, but was a substantial percentage in both. The means of these values
were 30 and 166% in meadow and
forest soils, respectively. This led to the
conclusion that biomass N may be a very important pool of stored labile N in this
ecosystem. Net N mineralization rates were almost always greater in the meadow
than in the
forest soils. Net N mineralization for the 10-d incubations averaged
21 μg N g⁻¹ soil in the meadow and 8 μg N g⁻¹ soil in the
forest Rates for long-term
N mineralization averaged 126 μg N g⁻¹ soil in the meadow and 52 μg N g⁻¹
soil in the
forest. Net N mineralization rates were correlated with C/N ratios for
both short-term and long-term incubations.
Advisors/Committee Members: Cromack, Kermit Jr (advisor).
Subjects/Keywords: Forest soils – Oregon
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APA (6th Edition):
Heichen, R. S. (2002). Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/29971
Chicago Manual of Style (16th Edition):
Heichen, Rachel S. “Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades.” 2002. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/29971.
MLA Handbook (7th Edition):
Heichen, Rachel S. “Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades.” 2002. Web. 07 Mar 2021.
Vancouver:
Heichen RS. Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades. [Internet] [Masters thesis]. Oregon State University; 2002. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/29971.
Council of Science Editors:
Heichen RS. Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades. [Masters Thesis]. Oregon State University; 2002. Available from: http://hdl.handle.net/1957/29971
25.
Singh, Karamvir.
Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial
Soils;.
Degree: Agriculture, 2005, Chaudhary Charan Singh University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/19912
Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial Soils
newline
Advisors/Committee Members: Mehta, K. K..Subjects/Keywords: Acidified; Mud; Fruit; Forest Plants; Alluvial
Soils
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APA (6th Edition):
Singh, K. (2005). Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial
Soils;. (Thesis). Chaudhary Charan Singh University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/19912
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):
Singh, Karamvir. “Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial
Soils;.” 2005. Thesis, Chaudhary Charan Singh University. Accessed March 07, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/19912.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Singh, Karamvir. “Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial
Soils;.” 2005. Web. 07 Mar 2021.
Vancouver:
Singh K. Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial
Soils;. [Internet] [Thesis]. Chaudhary Charan Singh University; 2005. [cited 2021 Mar 07].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/19912.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Singh K. Effect OfAcidified Press Mud On Soil Properties And
Establishment Of Fruit And Forest Plants In Impeded Alluvial
Soils;. [Thesis]. Chaudhary Charan Singh University; 2005. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/19912
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
26.
Kluber, Laurel A.
Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils.
Degree: PhD, Soil Science, 2010, Oregon State University
URL: http://hdl.handle.net/1957/15783
► Dense hyphal mats formed by ectomycorrhizal (EcM) fungi are prominent features in Douglas-fir (Pseudotsuga menziesii) forest soils and have been estimated to cover up to…
(more)
▼ Dense hyphal mats formed by ectomycorrhizal (EcM) fungi are prominent features in Douglas-fir (Pseudotsuga menziesii)
forest soils and have been estimated to cover up to 40% of the
forest floor in some stands. Although previous studies have examined various aspects of EcM fungi, little is known about their associated microbial communities and activities. The objectives of my dissertation are 1) to provide a current account of chemical and biochemical properties associated with EcM fungi, and 2) to describe the communities and activities of microbes occupying EcM mat and non-mat
forest soils. In the first phase of my research, I surveyed EcM mat and non-mat
soils from early and late seral
forest stands in the western Oregon Cascades. EcM mats were phylotyped and a variety of chemical and biochemical properties were measured. Results from this survey revealed distinct chemical and biochemical profiles for EcM mats in organic and mineral
soils compared with their corresponding non-mat soil horizons. The second phase of my research followed up this work by focusing on Piloderma mats in old-growth Douglas-fir stands. A combination of community fragment profiles, clone libraries, and quantitative PCR of bacterial 16S and fungal ITS rRNA genes, in conjunction with chitinase enzyme assays, were used to assess the microbial community composition, abundance, and activity in a year-long temporal study. I found that Piloderma mats harbor distinct fungal and bacterial communities compared with non-mat
soils. Furthermore, although microbial populations and enzyme activity of both soil types fluctuated throughout the year, their community compositions remained relatively stable. The results presented in this dissertation demonstrate that EcM mats create a unique soil environment with distinct microbial communities and activities compared to non-mat
forest soils. This work provides a significant contribution to the understanding of how EcM fungi impact the soil environment and microbial communities.
Advisors/Committee Members: Myrold, David (advisor), Smith, Jane (committee member).
Subjects/Keywords: Forest soils; Ectomycorrhizal fungi – Oregon, Western
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APA (6th Edition):
Kluber, L. A. (2010). Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/15783
Chicago Manual of Style (16th Edition):
Kluber, Laurel A. “Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils.” 2010. Doctoral Dissertation, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/15783.
MLA Handbook (7th Edition):
Kluber, Laurel A. “Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils.” 2010. Web. 07 Mar 2021.
Vancouver:
Kluber LA. Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils. [Internet] [Doctoral dissertation]. Oregon State University; 2010. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/15783.
Council of Science Editors:
Kluber LA. Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils. [Doctoral Dissertation]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/15783
Oregon State University
27.
Filz, George.
Engineering properties of Southeast Alaskan forest soils.
Degree: MS, Civil Engineering, 1981, Oregon State University
URL: http://hdl.handle.net/1957/42080
► The strength of both undisturbed and compacted soils from 10 sites in the slide-prone Tongass National Forest in SE Alaska were studied. Index property tests…
(more)
▼ The strength of both undisturbed and compacted
soils from 10 sites
in the slide-prone Tongass National
Forest in SE Alaska were studied.
Index property tests were also conducted on disturbed samples. The
index tests included natural water content, Atterberg Limits, specific
gravity of solids, grain size distribution, and moisture-density relationship.
The effect of drying on the
soils was studied by conducting
the Atterberg Limits tests on materials which had not been dried below
their field water content and comparing the results to those of Atterberg
Limits tests conducted on air-dried material. Nine of the 10 samples
studied exhibited a marked decrease in plasticity as a result of drying.
Consolidated-undrained triaxial shear tests with pore pressure
measurements were conducted on both undisturbed and compacted samples
to evaluate the
soils' effective strength parameters. Test results on
several undisturbed specimens from a single site often did not provide
comparable results because of material variability. In general, an
increase in effective angle of internal friction with decreasing plastic
index and increasing dry density was observed. Applications of the test
results to problems in slope stability analysis and use of the
soils in
engineered construction are discussed.
Advisors/Committee Members: Schroeder, W. L. (advisor).
Subjects/Keywords: Forest soils – Alaska
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APA (6th Edition):
Filz, G. (1981). Engineering properties of Southeast Alaskan forest soils. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42080
Chicago Manual of Style (16th Edition):
Filz, George. “Engineering properties of Southeast Alaskan forest soils.” 1981. Masters Thesis, Oregon State University. Accessed March 07, 2021.
http://hdl.handle.net/1957/42080.
MLA Handbook (7th Edition):
Filz, George. “Engineering properties of Southeast Alaskan forest soils.” 1981. Web. 07 Mar 2021.
Vancouver:
Filz G. Engineering properties of Southeast Alaskan forest soils. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1957/42080.
Council of Science Editors:
Filz G. Engineering properties of Southeast Alaskan forest soils. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/42080
Univerzitet u Beogradu
28.
Eremija, Saša, 1972-.
Geneza, osobine i ekološko-proizvodni potencijali
zemljišta u šumama bukve, jele i smrče na planini Lisina kod
Mrkonjić Grada.
Degree: Šumarski fakultet, 2016, Univerzitet u Beogradu
URL: https://fedorabg.bg.ac.rs/fedora/get/o:10254/bdef:Content/get
► Šumarstvo-ekologija šuma - Pedologija za šumare / Forestry: Forest Ecology - Soil Science for Foresters
U disertaciji je proučena i definisana uloga i značaj osnovnih…
(more)
▼ Šumarstvo-ekologija šuma - Pedologija za šumare /
Forestry: Forest Ecology - Soil Science for
Foresters
U disertaciji je proučena i definisana uloga i
značaj osnovnih pedogenetskih faktora (geološka podloga, uslovi
reljefa i klima), prikazani su rezultati proučavanja vegetacije i
zemljišta i izdvojene su ekološke jedinice. Planina Lisina nalazi
se u zapadnom dijelu Bosne i Hercegovine, odnosno u jugozapadnom
dijelu Republike Srpske, oblasti Bosanska Krajina, opština Mrkonjić
Grad. Prostire se na 44° 23' 51" sjeverne geografske širine i 17°
02' 30" istočne geografske dužine, pravcem sjeverozapad-jugoistok.
Geološka građa je složena, gdje se na malom prostoru dodiruju
različite geološke formacije. Reljef područja je razuđen,
dinamičan, pa zajedno sa heterogenim petrografskim elementima,
predstavlja dominantne faktore koji determinišu današnje stanje i
dinamiku razvoja zemljišta i šumske vegetacije. Područje ima
obilježja vlažnog perhumudnog klimata. Najveći dio područja
istraživanja pokrivaju mješovite, trodominantne zajednice bukve,
jele i smrče (Piceo-Abieti-Fagetum Stef. 1983). Unutar njihovog
areala, manje površine zauzimaju šume jele i smrče (Abieti-Piceetum
Mat. 1978) i šume bukve i smrče (Fago-Piceetum Gaj. 1972).
Fragmentarno, na vrlo skromnim površinama od svega nekoliko
hektara, zabilježene su: planinska šuma bukve sa lazarkinjom
(Asperulo odoratae-Fagetum B. Jov. 1983), planinska šuma bukve sa
vijukom šumskim (Festuco drymeiae-Fagetum montanum Mišić 1972),
šuma bukve i jele (Abieti-Fagetum dinaricum Treg 1957 emen. P-cer
1976), čista šuma smrče (Piceetum montanum illyricum Horv. et al.
1974), šuma smrče i bijelog bora (Piceo-Pinetum illyricum Stef.
1960) i čista šuma bijelog bora (Pinetum silvestris illyricum Stef.
1960). Izražena varijabilnost osnovnih pedogenetskih faktora
odrazila se i na izraženu varijabilnost pedološkog sloja. Izdvojeni
su sledeći osnovni tipovi zemljišta: koluvijum, rendzina, ranker,
kiselo smeđe zemljište, ilimerizovano zemljište i pozdol.
Koluvijalno (deluvijalno) zemljište je duboko, rastresito, lokalno
razvijeno na fosilnom eutričnom i distričnom smeđem zemljištu,
osrednjeg do visokog proizvodnog potencijala. Rendzina je
najrasprostranjeniji tip zemljišta na krečnjačkim supstratima. Ovo
su uglavnom srednje duboka, eutrofna zemljišta, sa visokim
sadržajem aktivnih karbonata. Produktivnost im je određene stepenom
razvoja i dubinom profila, a dublje forme u uslovima humidne klime
predstavljaju visoko produktivna staništa šumskih zajednica koje se
na njima javljaju. vii Ranker ima lokalno rasprostranjenje, vezano
za strme nagibe i istaknute grebene...
Advisors/Committee Members: Knežević, Milan N., 1953-.
Subjects/Keywords: Lisina; forest soils; productivity; ecological
units
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Eremija, Saša, 1. (2016). Geneza, osobine i ekološko-proizvodni potencijali
zemljišta u šumama bukve, jele i smrče na planini Lisina kod
Mrkonjić Grada. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:10254/bdef:Content/get
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):
Eremija, Saša, 1972-. “Geneza, osobine i ekološko-proizvodni potencijali
zemljišta u šumama bukve, jele i smrče na planini Lisina kod
Mrkonjić Grada.” 2016. Thesis, Univerzitet u Beogradu. Accessed March 07, 2021.
https://fedorabg.bg.ac.rs/fedora/get/o:10254/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Eremija, Saša, 1972-. “Geneza, osobine i ekološko-proizvodni potencijali
zemljišta u šumama bukve, jele i smrče na planini Lisina kod
Mrkonjić Grada.” 2016. Web. 07 Mar 2021.
Vancouver:
Eremija, Saša 1. Geneza, osobine i ekološko-proizvodni potencijali
zemljišta u šumama bukve, jele i smrče na planini Lisina kod
Mrkonjić Grada. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Mar 07].
Available from: https://fedorabg.bg.ac.rs/fedora/get/o:10254/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Eremija, Saša 1. Geneza, osobine i ekološko-proizvodni potencijali
zemljišta u šumama bukve, jele i smrče na planini Lisina kod
Mrkonjić Grada. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:10254/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Univerzitet u Beogradu
29.
Blagojević, Velibor, 1970-.
Edafske karakteristike i tipovi staništa šuma crnog bora
u Republici Srpskoj.
Degree: Šumarski fakultet, 2016, Univerzitet u Beogradu
URL: https://fedorabg.bg.ac.rs/fedora/get/o:12536/bdef:Content/get
► Šumarstvo-ekologija šuma - Pedologija za šumare / Forestry- Forestry Ecology - Soil Science for Foresters
U disertaciji su prikazana edafske karakteristike i tipovi staništa šuma…
(more)
▼ Šumarstvo-ekologija šuma - Pedologija za šumare /
Forestry- Forestry Ecology - Soil Science for
Foresters
U disertaciji su prikazana edafske karakteristike i
tipovi staništa šuma crnog bora u Republici Srpskoj, dobijeni na
osnovu terenskih i laboratorijskih istraživanja osnovnih fizičkih i
hemijskih osobina. Istraživanja su vršena na području Republike
Srpske, u prirodnim sastojinama crnog bora, na području opština
Višegrad, Srebrenica, Doboj, Teslić i Šipovo. U šumsko-uređajnom
pogledu istraživanja su vršena u Višegradskom, Donjedrinskom,
Dobojsko-derventskom, Usorsko-ukrinskom i Srednjevrbaskom
šumskoprivrednom području. Sastojine crnog bora nalazimo na
krečnjačkoj, krečnjačko - dolomitnoj, peridotisko-serpentinskoj
podlozi i male površine na gabru i dijabazu. Područje ispitivanja
ima odlike pojačane kontinentalne do umjereno kontinentalne
(Višegrad-Srebrenica), umjereno kontinentalne (Doboj) i blago
kontinentalno-planinske klime (Šipovo). Izdvojeni su sljedeći
tipovi zemljišta: humusno - silikatno (ranker), eutrično smeđe
zemljište (eutrični kambisol), pseudoglej, krečnjačko - dolomitna
crnica (kalkomelanosol), rendzina i smeđe zemljište na krečnjaku i
dolomitu (kalkokambisol). Humusno - silikatna zemljišta su
najrasprostranjeniji tipovi zemljišta u šumama crnog bora.
Pripadaju kategoriji plitkih do srednje dubokih skeletnih
zemljišta. Na grebenima i strimim padinama veoma su ugrožena od
erozije. Eutrično smeđe zemljište je srednje duboko, skeletno,
propustljivo za vodu i pedoklimatski suvo. Pseudoglej je duboko
zemljište, ispod plitkog propustljivog sloja nalazi se glinoviti,
zbijeni i nepropusni sloj. Crnice su plitka zemljišta, imaju malu
sposobnost zadržavanja vode, humozna, rijetko varijabilne dubine i
nisu podložna eroziji. Rendzine su plitka zemljišta, humozna,
kserotermna i ograničenog proizvodnog kapaciteta. Smeđe zemljište
na krečnjaku je srednje duboko, dosta humozno a produktivnost je
određena dubinom, stepenom stjenovitosti i kamenitosti. Regionalna
zajednica Erico - Pinetum nigrae (Z. Pavl. 1951., Krs. 1957)
opisana je na humusno-silikatnom zemljištu, eutričnom-smeđem
zemljištu i pseudogleju. Zajednica Pinetum nigrae baziferens
(Stef.1983) opisana je na rankeru. Pinetum nigrae dinaricum (Stef.
1958) i Pinetum illyricum calcicolum (Stef.1960) na rendzinama.Na
crnicama i smeđem krečnjačkom zemljištu opisana je Pinetum
illyricum calcicolum (Stef.1960).
Advisors/Committee Members: Knežević, Milan, 1953-.
Subjects/Keywords: forest soils; black pine; vegetation;
productivity
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Blagojević, Velibor, 1. (2016). Edafske karakteristike i tipovi staništa šuma crnog bora
u Republici Srpskoj. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:12536/bdef:Content/get
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):
Blagojević, Velibor, 1970-. “Edafske karakteristike i tipovi staništa šuma crnog bora
u Republici Srpskoj.” 2016. Thesis, Univerzitet u Beogradu. Accessed March 07, 2021.
https://fedorabg.bg.ac.rs/fedora/get/o:12536/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Blagojević, Velibor, 1970-. “Edafske karakteristike i tipovi staništa šuma crnog bora
u Republici Srpskoj.” 2016. Web. 07 Mar 2021.
Vancouver:
Blagojević, Velibor 1. Edafske karakteristike i tipovi staništa šuma crnog bora
u Republici Srpskoj. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Mar 07].
Available from: https://fedorabg.bg.ac.rs/fedora/get/o:12536/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Blagojević, Velibor 1. Edafske karakteristike i tipovi staništa šuma crnog bora
u Republici Srpskoj. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:12536/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Michigan State University
30.
Nutter, Wade L.
Hydrologic properties of several upland forest humus types in the lake states region.
Degree: 1968, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:7342
Thesis () – Michigan State University,
Subjects/Keywords: Humus; Forest soils
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nutter, W. L. (1968). Hydrologic properties of several upland forest humus types in the lake states region. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:7342
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):
Nutter, Wade L. “Hydrologic properties of several upland forest humus types in the lake states region.” 1968. Thesis, Michigan State University. Accessed March 07, 2021.
http://etd.lib.msu.edu/islandora/object/etd:7342.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nutter, Wade L. “Hydrologic properties of several upland forest humus types in the lake states region.” 1968. Web. 07 Mar 2021.
Vancouver:
Nutter WL. Hydrologic properties of several upland forest humus types in the lake states region. [Internet] [Thesis]. Michigan State University; 1968. [cited 2021 Mar 07].
Available from: http://etd.lib.msu.edu/islandora/object/etd:7342.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nutter WL. Hydrologic properties of several upland forest humus types in the lake states region. [Thesis]. Michigan State University; 1968. Available from: http://etd.lib.msu.edu/islandora/object/etd:7342
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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Open Access Theses and Dissertations