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 “"Litter Layers"”.
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Causes of temporal variations in N species transformations and mobility under acid grassland in York: The multi-functional role of plant litter
… and was attributed to different fates of litter inputs to the soils. When N mineralization was expressed on a soil C basis, both profiles followed similar trends. These freely drained acidic profiles showed incredible potential for N mineralization and mobility well below the root zone …
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Virgin hardwood forest soils of western North Carolina
… 1.3 m in diameter and 50 m in height. Total litter production averaged 3494 kg/ha, and the litter layers were typified by thin leaf (L), and well developed fermentation (F) and humus (H) layers. Cations and P are concentrated in the litter layers and immediate surface soil, while N is mixed …
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Effectiveness of Treatments to Reduce Rhododendron maximum and Promote Tree Seedling Regeneration in the Southern Appalachians
… of R. maximum stems. Prescribed fire reduced litter layers and caused delayed mortality on R. maximum stems three years following treatment. Hemispherical photographs taken within each plot showed that silvicultural treatments that successfully increased the amount of light entering each plot …
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Effects of Wildfire Intensity on Invasives, Stand Structure and Fuel Loading in Shenandoah National Park
… to determine the bulk density of the duff and litter layers. High intensity wildfires initially reduced species diversity and evenness in the tree and herbaceous strata, but after 14 years tree species diversity and evenness returned to levels found in unburned areas, while herbaceous strata …
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The relationships between forest and mountain fynbos communities in the southwestern Cape Province of South Africa
… with tall vegetation, high cover and deep litter layers as well as proximity to perches. Facilitation is enhanced in nuclei of forest species within fynbos communities. These studies refute the concept of forest and fynbos as distinct vegetation types. The relationships between forest and …
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Effects of Disturbance History on Forest Soil Characteristics in the Southern Appalachian Mountains
… that SRC south sites were higher in Pinus spp. Litter layer morphology differed strongly between the two watersheds. Specifically, well-developed humus (H) layers were typical in LSC, but completely absent in all typical pedons described in SRC. Data obtained from these two watersheds indicate …
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Diversity, Invasibility, and Stability of Appalachian Forests across an Experimental Disturbance Gradient
… and growth through the quality of the litter they produce. I also asked how might animals that are known to alter litter layers interact with dominant tree species to influence plant invasions. Therefore, I conducted an experiment investigating how changes in litter from dominant tree …
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The dynamics of litterfall in eucalypt woodland surrounding pine plantations
… the impacts of pine plantations and pine litter on surrounding native plant communities. Pine litter is defined here as structures shed from pines; primarily needles and pollen cones, but also seeds and twigs. In New South Wales (Australia), pine plantations are frequently bordered by …