Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"spruce-fir forests"”.
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Taxonomy, genesis, and parent material distribution of high- elevation forest soils in the southern Appalachians
High-elevation spruce-fir forests in the southern Appalachians may potentially be in a state of decline as a result of either natural or anthropogenic causes. Soils were investigated in areas representative of 117 permanent intensive field plots established to evaluate changes in forest composition …
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Competitive status of red spruce (Picea rubens) and Fraser fir (Abies fraseri) at ecotonal transitions in southern Appalachian sky islands
Southern Appalachian spruce-fir sky islands are globally threatened, boreal relict forests where red spruce (Picea rubens) and Fraser fir (Abies fraseri) are dominant. Fraser fir dominates at the highest elevations with spruce-fir and spruce-dominated stands at middle elevations and hardwoods …
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Assessing the Impacts of Balsam Woolly Adelgid (Adelges Piceae Ratz.) and Anthropogenic Disturbance on the Stand Structure and Mortality of Fraser Fir (Abies Fraseri (Pursh) Poir.) in the Black Mountains, North Carolina
… naturally occurring populations of Fraser fir (Abies fraseri) in the Black Mountains of North Carolina have been heavily impacted by both direct and indirect anthropogenic disturbances, including logging and logging- associated fires, and high mortality rates due to the introduction of the …
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The response of a Rocky Mountain forest system to a shifting disturbance regime
… may lead to increasing disturbances from wildfire, insect outbreaks, drought, and extreme weather events, which may greatly accelerate rates of ecosystem change. However, the role of disturbance in shaping forest response to climate change is not well understood. Better understanding the …
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The Physiological Ecology of Fraser FIr in Southern Appalachian Cloud Forests
Fraser fir (Abies fraseri (Pursh.) Poiret is a tree species endemic to the southern Appalachian Mountains, USA. This species is found in only six mountain-top populations in that span between southwestern Virginia and the Great Smoky Mountains of western North Carolina and eastern Tennessee. …
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Forest structure in unharvested old-growth: understanding the influence of soils on variability of long-term tree dynamics and fire history
Western North American forests adapted to frequent fires have been fundamentally altered and fragmented as a result of fire exclusion, the transportation infrastructure, development patterns, and other landscape level changes. In order to enhance the resiliency, diversity, and productivity of …
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Biogeochemical Modeling of the Response of Forest Watersheds in the Northeastern U.S. to Future Climate Change
… growing season. Modeling results indicate that spruce-fir forests will likely experience temperature stress and decline in productivity, while some of the northern hardwood forests are likely to experience water stress due to early loss of snowpack, longer growing season and associated water …