subject:(forest soils)

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/

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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)

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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 (6^th 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 (16^th Edition):

Clough, Brian J., 1984-. “Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty.” 2014. Doctoral Dissertation, Rutgers University. Accessed December 07, 2019. https://rucore.libraries.rutgers.edu/rutgers-lib/45226/.

MLA Handbook (7^th Edition):

Clough, Brian J., 1984-. “Bayesian approaches for mapping forest soil organic carbon: addressing spatial and model uncertainty.” 2014. Web. 07 Dec 2019.

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 2019 Dec 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/

Montana Tech

2. Carlson, Tony Clifford. Specific gravity and site index as related to soil series (Sanders County, Montana).

Degree: MS, 1964, Montana Tech

URL: https://scholarworks.umt.edu/etd/3634

Subjects/Keywords: Soils; Forest soils

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APA (6^th Edition):

Carlson, T. C. (1964). Specific gravity and site index as related to soil series (Sanders County, Montana). (Masters Thesis). Montana Tech. Retrieved from https://scholarworks.umt.edu/etd/3634

Chicago Manual of Style (16^th Edition):

Carlson, Tony Clifford. “Specific gravity and site index as related to soil series (Sanders County, Montana).” 1964. Masters Thesis, Montana Tech. Accessed December 07, 2019. https://scholarworks.umt.edu/etd/3634.

MLA Handbook (7^th Edition):

Carlson, Tony Clifford. “Specific gravity and site index as related to soil series (Sanders County, Montana).” 1964. Web. 07 Dec 2019.

Vancouver:

Carlson TC. Specific gravity and site index as related to soil series (Sanders County, Montana). [Internet] [Masters thesis]. Montana Tech; 1964. [cited 2019 Dec 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]. Montana Tech; 1964. Available from: https://scholarworks.umt.edu/etd/3634

Oregon State University

3. 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 (6^th 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 (16^th Edition):

Wagai, Rota. “Dynamics of water-soluble carbon in forest soils of contrasting fertility.” 1999. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/13257.

MLA Handbook (7^th Edition):

Wagai, Rota. “Dynamics of water-soluble carbon in forest soils of contrasting fertility.” 1999. Web. 07 Dec 2019.

Vancouver:

Wagai R. Dynamics of water-soluble carbon in forest soils of contrasting fertility. [Internet] [Masters thesis]. Oregon State University; 1999. [cited 2019 Dec 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

4. 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 (6^th 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 (16^th Edition):

Ranken, Darrel Wesley. “Hydrologic properties of soil and subsoil on a steep, forested slope.” 1974. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/9767.

MLA Handbook (7^th Edition):

Ranken, Darrel Wesley. “Hydrologic properties of soil and subsoil on a steep, forested slope.” 1974. Web. 07 Dec 2019.

Vancouver:

Ranken DW. Hydrologic properties of soil and subsoil on a steep, forested slope. [Internet] [Masters thesis]. Oregon State University; 1974. [cited 2019 Dec 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

5. 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 (6^th 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 (16^th Edition):

Whitaker, Carol Anne. “Restoring productivity of compacted forest soils with tillage.” 1983. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/9892.

MLA Handbook (7^th Edition):

Whitaker, Carol Anne. “Restoring productivity of compacted forest soils with tillage.” 1983. Web. 07 Dec 2019.

Vancouver:

Whitaker CA. Restoring productivity of compacted forest soils with tillage. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2019 Dec 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

6. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/10353.

MLA Handbook (7^th Edition):

Newman, Joseph Paul. “Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores.” 1998. Web. 07 Dec 2019.

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 2019 Dec 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

7. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/11213.

MLA Handbook (7^th Edition):

Dyrness, C T. “The effect of logging and slash burning on certain physical properties of forest soils.” 1956. Web. 07 Dec 2019.

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 2019 Dec 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

8. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/42020.

MLA Handbook (7^th 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 Dec 2019.

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 2019 Dec 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

9. 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)

Subjects/Keywords: Forest soils

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APA (6^th 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 (16^th Edition):

Hayden, John. “Low molecular weight organic acids in forest soils.” 1999. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/33172.

MLA Handbook (7^th Edition):

Hayden, John. “Low molecular weight organic acids in forest soils.” 1999. Web. 07 Dec 2019.

Vancouver:

Hayden J. Low molecular weight organic acids in forest soils. [Internet] [Masters thesis]. Oregon State University; 1999. [cited 2019 Dec 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

10. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/60087.

MLA Handbook (7^th 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 Dec 2019.

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 2019 Dec 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

Montana State University

11. Ottersberg, Robert Joseph. Amorphous character in twenty western Montana forest soils with apparent eolian influence.

Degree: College of Agriculture, 1977, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/5853

Subjects/Keywords: Forest soils.

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APA (6^th Edition):

Ottersberg, R. J. (1977). Amorphous character in twenty western Montana forest soils with apparent eolian influence. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/5853

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

Chicago Manual of Style (16^th Edition):

Ottersberg, Robert Joseph. “Amorphous character in twenty western Montana forest soils with apparent eolian influence.” 1977. Thesis, Montana State University. Accessed December 07, 2019. https://scholarworks.montana.edu/xmlui/handle/1/5853.

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

MLA Handbook (7^th Edition):

Ottersberg, Robert Joseph. “Amorphous character in twenty western Montana forest soils with apparent eolian influence.” 1977. Web. 07 Dec 2019.

Vancouver:

Ottersberg RJ. Amorphous character in twenty western Montana forest soils with apparent eolian influence. [Internet] [Thesis]. Montana State University; 1977. [cited 2019 Dec 07]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/5853.

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

Council of Science Editors:

Ottersberg RJ. Amorphous character in twenty western Montana forest soils with apparent eolian influence. [Thesis]. Montana State University; 1977. Available from: https://scholarworks.montana.edu/xmlui/handle/1/5853

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

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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/49576.

MLA Handbook (7^th Edition):

Neal, John Lloyd. “Influence of slash burning on microbial population and activities in a Douglas-fir forest soil.” 1963. Web. 07 Dec 2019.

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 2019 Dec 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/49515.

MLA Handbook (7^th Edition):

Urie, Dean Howard. “Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range.” 1958. Web. 07 Dec 2019.

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 2019 Dec 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 (6^th 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 (16^th Edition):

Hu, Lily Jho-yuan. “Soluble carbon and respiration of forest humus.” 1968. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/46483.

MLA Handbook (7^th Edition):

Hu, Lily Jho-yuan. “Soluble carbon and respiration of forest humus.” 1968. Web. 07 Dec 2019.

Vancouver:

Hu LJ. Soluble carbon and respiration of forest humus. [Internet] [Masters thesis]. Oregon State University; 1968. [cited 2019 Dec 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 (6^th 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 (16^th Edition):

Collins, Dana Huntley. “A method of forest soil-site quality investigation.” 1956. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/19337.

MLA Handbook (7^th Edition):

Collins, Dana Huntley. “A method of forest soil-site quality investigation.” 1956. Web. 07 Dec 2019.

Vancouver:

Collins DH. A method of forest soil-site quality investigation. [Internet] [Masters thesis]. Oregon State University; 1956. [cited 2019 Dec 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 (6^th 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 (16^th 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 December 07, 2019. http://etd.lib.msu.edu/islandora/object/etd:44280.

MLA Handbook (7^th Edition):

Harlan, Richard L. “Soil moisture regime and soil water balance under upland hardwood forest during a period of subnormal precipitation.” 1967. Web. 07 Dec 2019.

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 2019 Dec 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

Montana Tech

17. Mandzak, John Michael. Progressive acid dissolution technique| A new direction in the study of forest soils.

Degree: MA, 1974, Montana Tech

URL: https://scholarworks.umt.edu/etd/3322

Subjects/Keywords: Forest soils; Forest soils Research

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APA (6^th Edition):

Mandzak, J. M. (1974). Progressive acid dissolution technique| A new direction in the study of forest soils. (Masters Thesis). Montana Tech. Retrieved from https://scholarworks.umt.edu/etd/3322

Chicago Manual of Style (16^th Edition):

Mandzak, John Michael. “Progressive acid dissolution technique| A new direction in the study of forest soils.” 1974. Masters Thesis, Montana Tech. Accessed December 07, 2019. https://scholarworks.umt.edu/etd/3322.

MLA Handbook (7^th Edition):

Mandzak, John Michael. “Progressive acid dissolution technique| A new direction in the study of forest soils.” 1974. Web. 07 Dec 2019.

Vancouver:

Mandzak JM. Progressive acid dissolution technique| A new direction in the study of forest soils. [Internet] [Masters thesis]. Montana Tech; 1974. [cited 2019 Dec 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]. Montana Tech; 1974. Available from: https://scholarworks.umt.edu/etd/3322

18. 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 (6^th 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 (16^th 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 December 07, 2019. 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 (7^th Edition):

Singh, Karamvir. “Effect OfAcidified Press Mud On Soil Properties And Establishment Of Fruit And Forest Plants In Impeded Alluvial Soils;.” 2005. Web. 07 Dec 2019.

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 2019 Dec 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

Univerzitet u Beogradu

19. 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

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

APA (6^th 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 (16^th 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 December 07, 2019. 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 (7^th 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 Dec 2019.

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 2019 Dec 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

20. 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

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

APA (6^th 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 (16^th Edition):

Blagojević, Velibor, 1970-. “Edafske karakteristike i tipovi staništa šuma crnog bora u Republici Srpskoj.” 2016. Thesis, Univerzitet u Beogradu. Accessed December 07, 2019. 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 (7^th Edition):

Blagojević, Velibor, 1970-. “Edafske karakteristike i tipovi staništa šuma crnog bora u Republici Srpskoj.” 2016. Web. 07 Dec 2019.

Vancouver:

Blagojević, Velibor 1. Edafske karakteristike i tipovi staništa šuma crnog bora u Republici Srpskoj. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2019 Dec 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

Oregon State University

21. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/10183.

MLA Handbook (7^th Edition):

Borchers, Jeffrey G. “Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon.” 1990. Web. 07 Dec 2019.

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 2019 Dec 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

22. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/11048.

MLA Handbook (7^th Edition):

Strand, Robert Fenton. “Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon.” 1964. Web. 07 Dec 2019.

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 2019 Dec 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

23. 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 (6^th 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 (16^th Edition):

Flint, Alan L. “Soil physical properties and available water capacity of southwest Oregon forest soils.” 1983. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/42015.

MLA Handbook (7^th Edition):

Flint, Alan L. “Soil physical properties and available water capacity of southwest Oregon forest soils.” 1983. Web. 07 Dec 2019.

Vancouver:

Flint AL. Soil physical properties and available water capacity of southwest Oregon forest soils. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2019 Dec 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

24. 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 (6^th 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 (16^th Edition):

Wicherski, Bruce P. “Analysis of variability of some forest soils in southwestern Oregon.” 1980. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/42461.

MLA Handbook (7^th Edition):

Wicherski, Bruce P. “Analysis of variability of some forest soils in southwestern Oregon.” 1980. Web. 07 Dec 2019.

Vancouver:

Wicherski BP. Analysis of variability of some forest soils in southwestern Oregon. [Internet] [Masters thesis]. Oregon State University; 1980. [cited 2019 Dec 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

25. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/59179.

MLA Handbook (7^th Edition):

Craigg, Terry Lee. “Applications of Soil Science in Forest Landscape Planning : Challenges and Opportunities in the 21st Century.” 2016. Web. 07 Dec 2019.

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 2019 Dec 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

26. 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 (6^th 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 (16^th 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 December 07, 2019. http://hdl.handle.net/1957/29971.

MLA Handbook (7^th Edition):

Heichen, Rachel S. “Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades.” 2002. Web. 07 Dec 2019.

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 2019 Dec 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

Penn State University

27. Brown, Wade E. Impacts of Dirt and Gravel Road Dust on Roadside Organic Forest Soils.

Degree: MS, Forest Resources, 2009, Penn State University

URL: https://etda.libraries.psu.edu/catalog/10097

► Dirt and gravel roads are capable of producing large amounts of dust. This dust comes from aggregate that is placed on the road surface. Aggregate… (more)

Subjects/Keywords: driving surface aggregate; dust; gravel; forest soils

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APA (6^th Edition):

Brown, W. E. (2009). Impacts of Dirt and Gravel Road Dust on Roadside Organic Forest Soils. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/10097

Chicago Manual of Style (16^th Edition):

Brown, Wade E. “Impacts of Dirt and Gravel Road Dust on Roadside Organic Forest Soils.” 2009. Masters Thesis, Penn State University. Accessed December 07, 2019. https://etda.libraries.psu.edu/catalog/10097.

MLA Handbook (7^th Edition):

Brown, Wade E. “Impacts of Dirt and Gravel Road Dust on Roadside Organic Forest Soils.” 2009. Web. 07 Dec 2019.

Vancouver:

Brown WE. Impacts of Dirt and Gravel Road Dust on Roadside Organic Forest Soils. [Internet] [Masters thesis]. Penn State University; 2009. [cited 2019 Dec 07]. Available from: https://etda.libraries.psu.edu/catalog/10097.

Council of Science Editors:

Brown WE. Impacts of Dirt and Gravel Road Dust on Roadside Organic Forest Soils. [Masters Thesis]. Penn State University; 2009. Available from: https://etda.libraries.psu.edu/catalog/10097

Oregon State University

28. 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 (6^th 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 (16^th Edition):

Kluber, Laurel A. “Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils.” 2010. Doctoral Dissertation, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/15783.

MLA Handbook (7^th Edition):

Kluber, Laurel A. “Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils.” 2010. Web. 07 Dec 2019.

Vancouver:

Kluber LA. Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils. [Internet] [Doctoral dissertation]. Oregon State University; 2010. [cited 2019 Dec 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

29. 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)

Subjects/Keywords: Forest soils – Alaska

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APA (6^th 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 (16^th Edition):

Filz, George. “Engineering properties of Southeast Alaskan forest soils.” 1981. Masters Thesis, Oregon State University. Accessed December 07, 2019. http://hdl.handle.net/1957/42080.

MLA Handbook (7^th Edition):

Filz, George. “Engineering properties of Southeast Alaskan forest soils.” 1981. Web. 07 Dec 2019.

Vancouver:

Filz G. Engineering properties of Southeast Alaskan forest soils. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2019 Dec 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

Virginia Tech

30. Brousseau, Patricia Ann. Nitrate Sorption in the Soils of the Coweeta Hydrologic Laboratory.

Degree: MS, Forest Resources and Environmental Conservation, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/19281

► Atmospheric deposition of reactive nitrogen (N) from anthropogenic sources to forested systems may have acute and long-term deleterious impacts on tree species and water quality.… (more)

▼ Atmospheric deposition of reactive nitrogen (N) from anthropogenic sources to forested systems may have acute and long-term deleterious impacts on tree species and water quality. Understanding how nitrate (NO3-) moves through the soil system and if it has the potential to be retarded from vertical or lateral leaching allows for a better understanding of the processes important for NO3- movement and export from forested watersheds. We examined four watersheds at Coweeta Hydrologic Laboratory (CHL) and determined that soil NO3- sorption is a mechanism for abiotic NO3- retention. NO3- sorption was best described with an S-shaped, sigmoidal model for B horizons that suggests that NO3- sorption to soil colloidal surfaces has a higher affinity for soil solution at low equilibrium concentrations. Parameter a, the sorption maximum, was most strongly correlated to ammonium oxalate extractable Al (Alo) and Mn (Mno), suggesting that amorphous Al and Mn oxides may be the primary source of positively charged sorption sites. Parameter b, the width of the sigmoid curve slope, was best predicted by %C in the soil; suggesting that C compounds may bind to and reduce the availability of positively charged exchange sites for NO3- sorption. Previously harvested watersheds exhibited larger variability in parameter values Xo, the inflection point of the curve, and b. High elevation watersheds had higher median values for Alo, Mno and the ration of oxalate to dithionite extractable Fe (Feo/Fed), suggesting that the soils at higher elevations are at earlier stages of pedogenic development and have more poorly crystalline Fe and Al oxides. The greatest potential for sorption maybe at an intermediate soil depth between where there is a significant decrease in biologically cycled C, phosphate and sulfate yet there is enough mineral weathering to provide the mineralogical structures that can support positively charged surfaces. Advisors/Committee Members: Strahm, Brian Dale (committeechair), Schoenholtz, Stephen Hanley (committee member), Knoepp, Jennifer D. (committee member).

Subjects/Keywords: nitrate; sorption; forest soils; oxide; watershed

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APA (6^th Edition):

Brousseau, P. A. (2013). Nitrate Sorption in the Soils of the Coweeta Hydrologic Laboratory. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/19281

Chicago Manual of Style (16^th Edition):

Brousseau, Patricia Ann. “Nitrate Sorption in the Soils of the Coweeta Hydrologic Laboratory.” 2013. Masters Thesis, Virginia Tech. Accessed December 07, 2019. http://hdl.handle.net/10919/19281.

MLA Handbook (7^th Edition):

Brousseau, Patricia Ann. “Nitrate Sorption in the Soils of the Coweeta Hydrologic Laboratory.” 2013. Web. 07 Dec 2019.

Vancouver:

Brousseau PA. Nitrate Sorption in the Soils of the Coweeta Hydrologic Laboratory. [Internet] [Masters thesis]. Virginia Tech; 2013. [cited 2019 Dec 07]. Available from: http://hdl.handle.net/10919/19281.

Council of Science Editors:

Brousseau PA. Nitrate Sorption in the Soils of the Coweeta Hydrologic Laboratory. [Masters Thesis]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/19281

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