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Articles 1 - 4 of 4
Full-Text Articles in Forest Sciences
Density Management In Young Western Larch Stands: Tree Growth, Stand Yield, And Carbon Storage 54 Years After Thinning, Michael S. Schaedel
Density Management In Young Western Larch Stands: Tree Growth, Stand Yield, And Carbon Storage 54 Years After Thinning, Michael S. Schaedel
Graduate Student Theses, Dissertations, & Professional Papers
Long-term silvicultural experiments can be used to test novel ecological hypotheses and answer contemporary management questions that were not envisioned at study initiation. We used a 54-year old western larch precommercial thinning (PCT) study in northwest Montana to examine two sets of questions: (1) how different PCT regimes affect long-term stand yield and tree growth, and (2) how PCT affects total aboveground carbon (C) storage and distribution among C pools. The study has three target densities (494 trees ha-1, 890 trees ha-1, and 1680 trees ha-1) and three numbers of entries to achieve those …
Long-Term Impacts Of Fuel Treatments On Tree Growth And Aboveground Biomass Accumulation In Ponderosa Pine Forests Of The Northern Rocky Mountains, Kate A. Clyatt
Graduate Student Theses, Dissertations, & Professional Papers
In western North America, many low-elevation, dry forest types historically experienced frequent, low-severity fires. However, European settlement and fire suppression policies have contributed to over a century of fire exclusion, substantially altering forest structure and composition. There is considerable interest in restoring fire resilient characteristics to these forests through fuel reduction treatments. One limitation of current research on the impacts of fuel treatments is treatment longevity, as few studies have been able to quantify long-term responses to commonly applied treatments. This research evaluated tree growth and aboveground biomass responses 23 years after treatment in two silvicultural installations with different underburning …
Synthesis Of Satellite Microwave Observations For Monitoring Global Land-Atmosphere Co2 Exchange, Lucas Alan Jones
Synthesis Of Satellite Microwave Observations For Monitoring Global Land-Atmosphere Co2 Exchange, Lucas Alan Jones
Graduate Student Theses, Dissertations, & Professional Papers
This dissertation describes the estimation, error quantification, and incorporation of land surface information from microwave satellite remote sensing for modeling global ecosystem land-atmosphere net CO2 exchange. Retrieval algorithms were developed for estimating soil moisture, surface water, surface temperature, and vegetation phenology from microwave imagery timeseries. Soil moisture retrievals were merged with model-based soil moisture estimates and incorporated into a light-use efficiency model for vegetation productivity coupled to a soil decomposition model. Results, including state and uncertainty estimates, were evaluated with a global eddy covariance flux tower network and other independent global model- and remote-sensing based products.
A Case For Untrammeledness As The Foundational Goal Of Wilderness Management, Robert A. Mcglothlin
A Case For Untrammeledness As The Foundational Goal Of Wilderness Management, Robert A. Mcglothlin
Graduate Student Theses, Dissertations, & Professional Papers
This thesis addresses the quandary faced by wilderness managers in a time of heightening anthropogenic change, who are tasked with the conflicting goals of leaving wilderness untrammeled from management control, while simultaneously maintaining natural conditions free from human influence. I explain how this debate between conflicting management goals reflects a deeper rift between two competing philosophical paradigms of wilderness stewardship, which I term the Naturalness- paradigm and the Untrammeledness-paradigm. The Naturalness-paradigm embraces a techno-centric view of wilderness stewardship that exalts the role of managers in shaping wilderness ecosystems, whose persistence it considers to be dependent upon human provisioning. The Untrammeledness-paradigm …