Global ETD Search
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Showing 1 to 18 of 18 for “"Disturbance history"”.
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A range-wide disturbance history for Quercus alba in the eastern US
… analyses and is often linked to changes in disturbance regimes, a landscape-level analysis of historical establishment and disturbance throughout the region has not been conducted. I used tree-ring chronologies to analyze the disturbance history from old-growth Q. alba sites located …
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Interactive effects of wildfire and disturbance history on amphibians and their parasites
Climate-driven changes in wildfire and other disturbance regimes are expected to affect populations and communities worldwide. Understanding how these changes will affect native species is critical for future conservation efforts, especially on managed forests. Using data from several wildfires …
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Interactive effects of wildfire and disturbance history on amphibians and their parasites
Climate-driven changes in wildfire and other disturbance regimes are expected to affect populations and communities worldwide. Understanding how these changes will affect native species is critical for future conservation efforts, especially on managed forests. Using data from several wildfires …
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Effects of Disturbance History on Forest Soil Characteristics in the Southern Appalachian Mountains
Minimally disturbed virgin forest soils in the Little Santeetlah Creek (LSC) watershed of western North Carolina were sampled along with soils from the adjacent disturbed Slickrock Creek (SRC) watershed. Soils with similar elevation/landform/vegetation/parent material characteristics were initially …
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Compounding Fire Disturbance History Encourages Coast Redwood (Sequoia sempervirens) Regeneration and Community Dominance
<p>Disturbance is fundamental to forest ecosystem function and overall health, but climate change is likely to increase both disturbance frequency and intensity in the future. Forests subject to increasingly frequent and intense disturbances are more likely to experience compounding disturbance …
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Stand dynamics and disturbance history of five oak -dominated old -growth stands in the unglaciated Appalachian Plateau
Stand dynamics and disturbance histories of five eastern, oak-dominated old-growth stands were investigated using ecological field sampling techniques, dendrochronologogical methods, and a review of historical resources of original forest composition and patterns of human and natural disturbance. …
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Age, forest structure, and disturbance history of five potential old-growth forests in eastern Kentucky's Cumberland Plateau
… established prior to 1780, and being similar in disturbance history and forest structure to other regional OG were to be considered OG. Shillalah Creek (SC) and Hensley-Pine Mountain (HP) possess no in plot trees established prior to 1780, show evidence of stand-wide disturbance during the …
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Forest Dynamics Of Two Multi-Aged Hemlock-Mixed Mesophytic Forests In The Northern Cumberland Plateau, Kentucky
… health, stand structure, age structure, and disturbance history. Rock Creek Research Natural Area (RCRNA) is a multi-aged primary forest while the Cold Hill Area (CHA) is a multi-aged mature secondary forest. Age structure and recruitment patterns at the RCRNA gorge imply limited, selective …
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A quantitative study of the vegetation of dry and dry-mesic sand prairies in Central and Northwestern Illinois
… to two major ecological factors: moisture and disturbance history. Sites with higher soil moisture typically contained mesic species not found in drier prairies. Since these mesic prairies all lie outside Mason County, soil moisture appears partly to influence the separation of northwest …
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The dynamics of the Afromontane forest remnants in the Southwestern Cape
… are related to environmental constraints and disturbance history. Riparian forest and Scree forest were identified, and differences in the structure a.nd composition of the two forest types and their ecotonal communities were evident at both the recently burnt site of Swartboskloof and the …
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Forest dynamics of pine- and oak-dominated communities on southeastern-facing slopes of Warm Springs Mountain, Virginia
… National Forest. Limited documentation of past disturbances and their influence on WSM forests presents challenges for land managers desiring to understand historic conditions for these ecosystems. The only formal study of vegetation dynamics on WSM noted an absence of pitch pine (Pinus rigida …
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Tracking Forest Height Growth Over Time with ICESat-2 ATL08
… over time across the forest cover types and disturbance histories in a coastal region of North Carolina, a site selected for its homogenous topography and high industrial forest activity. ATL08 canopy height estimations demonstrate strong alignment (R2 = 0.88, RMSE = 2.64 meters) with …
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Demografía y ecología evolutiva del subarbusto carnívoro Drosophyllum lusitanicum (L.) Link. (Drosophyllaceae)
Natural disturbances occur in various ecosystems and have resulted in the evolution of life histories to buffer or even benefit from disturbance regimes. However, human activities increasingly interact with natural disturbances, posing potentially significant threats to the viability of …
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From land to water: the impacts of forest disturbances on carbon cycling in northern catchments
… disturbed by biotic and abiotic events. These disturbances are especially important since they facilitate the redistribution of nutrients within and between ecosystems, which can alter resource use and productivity. Yet how various types of disturbances, both individually and in combination, …
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Flood Processes, Forest Dynamics, and Disturbance In the Congaree River Floodplain, South Carolina
… to environmental gradients and historic logging disturbances.</p> <p> This study presents the innovative application of a 2D hydrodynamic flood model for simulating complex overland flow processes and quantifying hydrogeomorphic environmental data for use in ecological analysis. The 2D flood …
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The impact of pine plantations and alien invertebrates on native forest and fynbos invertebrate communities in Table Mountain National Park
… of corresponding native taxa were detected. Disturbance history offers a more parsimonious explanation for the trends observed, particularly in fynbos. However, carnivorous molluscs require careful monitoring, given their abundance and known impacts elsewhere. Using a reiterative process and …
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Surveying house-infesting ants after 87 years: species identity and economic impact in central Illinois
… ant communities among sites that varied in their disturbance history since isolation by agricultural and urban development. The urban survey revealed long-term trends in the incidence and abundance of ants that persist in urban environments and the relative economic impact of these ants on …
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Demography of the Cabbage Tree Palm, Livistona australis
… Two of the four populations indicated that any disturbance had not yet impacted on the distribution of trunk size classes at these sites. Of the other two sites one presented trunk frequencies that indicated a complex disturbance history while the other, an island study site, indicated that the …