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 20 of 33 for “"Forest Communities"”.
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Nutrient Dynamics of Forest Communities in Central Illinois
… separate investigations of nutrient cycling in forests were conducted at Robert Allerton Park, 7 km southwest of Monticello in east central Illinois. Research was conducted in the two dominant forest types of the region: (1) a floodplain community (Acer saccharinum dominant), and (2) an upland …
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Variability and Drivers of Forest Communities at the Great Dismal Swamp
The Great Dismal Swamp (GDS) is a forested peatland located in the Atlantic Coastal Plain. Once a mosaic of wetland communities, disturbances (e.g., timber harvesting and ditching) have resulted in altered hydrologic regime, homogenized forest communities, and increased peat subsidence. In …
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The colonisation of fynbos and disturbed sites by indigenous forest communities in the Southern Cape
The area covered by indigenous forests in the Southern Cape has been and is still diminishing as a result of 1 road construction (for example, 28 ha of indigenous' forest has recently been clear-felled for a new highway), power lines, settlements, fires (man-made and natural, for example the fires …
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Impacts of Laurel Wilt Disease on Redbay (Persea Borbonia) Population Structure and Forest Communities in the Coastal Plain of Georgia, USA
… its impacts on redbay population structure and forest communities. Healthy and infested populations of redbay and their associated communities were compared in five sites infested with LWD and three un-infested sites in five counties in Georgia. Tree, shrub, and herb layers were sampled …
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Mid Cretaceous fossil forests of Alexander Island, Antarctica
… Peninsula. These fossils indicate that diverse forest communities grew upon the floodplain areas of Alexander Island during the Albian at a palaeolatitude of 69-75 ° S. The fossil forests are preserved within the fluvial sediments of the Triton Point Formation of the Fossil Bluff Group, which …
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Environmental, spatial and temporal drivers of plant community composition in British forest habitat
Broadleaved forest habitat is important for a number of ecosystem functions and as a refuge for many rare plant species in human-modified landscapes. It is however, threatened by global change drivers such as deforestation and the associated fragmentation of remaining habitat areas, along with …
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Disturbance-based restoration for recovery of pitch pine (Pinus rigida) in the Thousand Islands Ecosystem: a comparison of prescribed fire and mechanical disturbance on seedling regeneration
… plays an important role in maintaining forests worldwide. Many natural disturbance regimes, especially wildfire, have been modified, which can lead to the loss of disturbance adapted forest communities. Pinus rigida (pitch pine) is strongly associated with wildfire in the core of its …
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Vegetation Dynamics of an Old-growth Mixed Mesophytic Forest in Southeastern Ohio, USA
… change in the composition and structure of forest communities is important for understanding the distribution and abundances of natural resources, carbon pools, and species. Here, results are presented from the second sampling effort at Dysart Woods, an old-growth, mixed-mesophytic remnant …
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Occurrence, Composition, and Habitat Associations of Terrestrial Herbaceous Plants in a Tropical Forest Community
In tropical forests, niche differentiation in terms of resource partitioning remains a central hypothesis for the maintenance of species diversity. However, all plants require seemingly identical resources, which would appear to limit the number of niche dimensions available for species to inhabit. …
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Deer impact and plant resistance traits
… are widely considered to influence ecological communities, ecosystems and human wellbeing by foraging preferentially on certain plant species. Previous research has shown that high deer density can change the relative abundance of tree species in forest communities. Furthermore, some evidence …
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Fire and Road Disturbance Impacts on Forest Plant Species and Seed Rain in Table Mountain Fire Arai, Kittitas County, Washington
Forest communities are in a constant state of change. Disturbance events can alter the physical landscape and create conditions favorable to some species while negatively impacting others. Fire has been a natural, reoccurring source of disturbance in Pacific Northwest forests. Over the past …
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Predicting forest cover types in Southwestern Virginia using topographic information
… between physical site factors and existing forest communities in southwestern Virginia. A pair of dichotomous keys was produced that "predicted" the forest type most likely to occur in an area based on topography. Maps of predicted forest types, using the Trayis (1982) and SAF (1980) …
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The vegetation of Swartboschkloof, Jonkershoek, Cape Province, South Africa
… soils of part of the same area. Sixteen fynbos communities, grouped into three groups and five forest communities, grouped into two groups, have been identified. The data of a previous study by Werger, Kruger and Taylor (1972) have been interpreted in the context of this study. A map of the …
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Hydrologic Controls on Ecosystem Structure and Function in the Great Dismal Swamp
Forested peatlands of the Great Dismal Swamp (GDS) have been greatly altered since colonial times, motivating recent restoration efforts. Community structure and function were hydrologically altered by 19th and 20th century ditches installed to lower water levels and enable early timber harvesting. …
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Comparison of Bare Root vs. Potted Plants, Species Selection, and Caging Types for Restoration of a Prairie Wetland, and Quantitative Analysis and Descriptive Survey of Plant Communities and Associations at Lewisville Lake Environmental Learning Area (LLELA), Lewisville, TX
… community, dominated by weedy species. Prairie communities are dominated by Johnson grass and ragweed, with climax tall grass prairie communities only in areas that have been planted with native grass seed. Forest communities are similarly in an early successional stage, dominated by the …
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Environmental governance and implications of small-scale logging: the case of the indigenous groups in the Ampiyacu Basin in the northeastern Peruvian Amazon
… despite the importance of this activity to forest communities and its relevance to the implementation of conservation initiatives. Previous studies in the region have given an overview of small-scale logging and the role of local institutions in the management of timber resources. This study …
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Long-term dynamics of forest phenology across the central hardwoods
[EMBARGOED UNTIL 12/01/2026] Many forest communities across the central hardwoods region of the United States are experiencing shifts from oak dominance to later successional species after anthropogenic alterations to historical disturbance regimes. This transition, amidst unprecedented climatic …
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Climatic, environmental, and phenological analyses of diverse lowland neotropical pollen rain data using ecoinformatic and machine learning tools
… pollen assemblage data produced by different forest environments are compared to compositional changes observed within the fossil pollen record to improve interpretations of how plant communities have changed over time and under different climatic and environmental conditions. While modern …
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Ecological and taxonomic studies of the Russulaceae and other ectomycorrhizal Basidiomycetes in the high-elevation forests of the southern Appalachians
… are among the dominant ectomycorrhizal fungi in forest communities. The contribution of the Russulaceae to the communities of ectomycorrhizal Basidiomycetes fruiting in red spruce and adjacent northern hardwood forests in West Virginia was evaluated and compared with other ectomycorrhizal …
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