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.
Results
Showing 1 to 20 of 22 for “"Exotic Plants"”.
-
Spatial Distribution of Four Exotic Plants in Relation to Physical Environmental Factors with Analysis using GIS
The spatial distributions of four plant species native to Asia, yet considered invasive in southwestern Virginia, were studied in order to produce predictive habitat maps. The study took place in the mountains to the north of Blacksburg, VA, on National Forest lands. A random GPS survey of each of …
-
SEASONAL FLAMMABILITY COMPARISONS OF NATIVE AND EXOTIC PLANTS IN THE POST OAK SAVANNAH, BLACKLAND PRAIRIE, AND PINEYWOODS ECOREGIONS OF TEXAS
<p>East Texas’ diverse landscape can present year-round wildfire seasons that can be influenced by seasonal and regional differences in climate and physiography. Greater insight into the fundamental thermal behavior of wildland fuels can aid in fire behavior prediction and development of …
-
Influence of fire and habitat on the removal of invasive plant seeds by granivores in longleaf pine savannas
Invasions of fire-dependent ecosystems by exotic woody plant species can disrupt fire cycles and alter successional trajectories. Prescribed fire is an important tool for managing such ecosystems, yet the role of top-down processes in mediating fire effects on invasion remain poorly understood. …
-
Shoot Flammability Patterns in Urban Plants at the Wildland-Urban Interface of the Greater Sydney Region
… shoot flammability assessments of native and exotic plants within Australia, using a bespoke flammability device. The worsening nature of wildfires on the eastern coast of Australia due to climate change, poses a great risk to populations living at the wildland urban interface. Gardens and …
-
Invasive lespedeza cuneata and its relationship to soil microbes and plant-soil feedback
… has lead to increased frequencies of exotic plant invasions, which can reduce biodiversity and lead to extinction of native species. Physical traits that increase competitive ability and reproductive output encourage the invasiveness of exotic plants. Interactions with the soil …
-
Analysis of intraspecific and interspecific interactions between the invasive exotic tree-of-heaven (Ailanthus altissima (Miller) Swingle) and the native black locust (Robinia pseudoacacia L.)
Invasive exotic plants can persist and successfully spread within ecosystems and negatively affect the recruitment of native species. The exotic invasive Ailanthus altissima and the native Robinia pseudoacacia are frequently found in disturbed sites and exhibit similar growth and reproductive …
-
Avaliação da germinação e crescimento inicial de oleaginosas cultivadas com a aplicação de produtos foliares de algaroba
… high temperature. Nevertheless, oil crops are plants traditionally grown in this region. Biological invasion is a phenomenon that causes changes in the dynamics of natural ecosystems invaded by the establishment of exotic plants. The mesquite (Prosopis juliflora (SW) DC.) is an invasive plant …
-
Characterizing the Impact of Freshwater Salinization on Engineered Ecosystems: Implications for Performance, Resilience, and Self-Repair Through Phytoremediation
… and also serve as habitats for native and exotic plants. However, during winter, these basins receive saline runoff from road salt application, which contributes to Freshwater Salinization Syndrome (FSS). Since limited research has connected direct measurement of soil and stormwater …
-
Effects of exotic invasive vegetation on breeding birds along the North Chickamauga Creek
The invasion of exotic plants into riparian areas of southeastern United States is a conservation concern not only for native plant communities, but also for wildlife. Breeding bird community structure could be particularly affected by such invasions and subsequent habitat changes as birds respond …
-
Multidimensional Spatial Characterization of Plant Invasions in 'El Pinacate y Gran Desierto de Altar' Biosphere Reserve
… more significant effects than global warming. Exotic plant invasions threaten biodiversity and ecosystem viability worldwide. Their effects in the Sonoran Desert ecosystems are a growing concern among ecologists and land managers. We hypothesized that highly dynamic desert environments are …
-
Investigating Structure and Function of Rhizosphere Associated Microbial Communities in Natural and Managed Plant Systems
Many plants, especially grasses, have Nitrogen (N) as their growth-limiting nutrient. Large amounts of N fertilizer (>100 kg N ha-1) are used in managed systems to maximize crop productivity. However, the plant captures less than 50% of the (~12 million tons per year, U.S.) applied N-fertilizer. …
-
Using patchy plant invasions to understand how diffuse interactions modify facilitation and competition
<p>Indirect interactions among plants promote conditionality in competitive outcomes that affect plant community structure and function. I utilized spatially patchy distributions of two invasive exotic plants, <i>Centaurea stoebe</i> and <i>Bromus tectorum</i>, to explore conditionality in plant …
-
Using patchy plant invasions to understand how diffuse interactions modify facilitation and competition
<p>Indirect interactions among plants promote conditionality in competitive outcomes that affect plant community structure and function. I utilized spatially patchy distributions of two invasive exotic plants, <i>Centaurea stoebe</i> and <i>Bromus tectorum</i>, to explore conditionality in plant …
-
Processes determining plant species diversity in restored tallgrass prairie
… common, and the size and longevity of grassland plants makes them easy to measure and manipulate. Here, we present the first synthetic study to test the relative importance of soil characteristics, management actions, seed mix design, and site characteristics for predicting prairie restoration …
-
Characterization of Sites for Native Herbaceous Understory Restoration in West Gulf Coast Longleaf Pine (Pinus palustris) Savannas
… species have since been removed or reduced by exotic plants that were introduced and from the reduction in the frequency of both wild and prescribed fires. A diverse layer of understory species can still be seen today, but not often in the historical savanna setting that is desirable in …
-
Characterization of Sites for Native Herbaceous Understory Restoration in West Gulf Coast Longleaf Pine (Pinus palustris) Savannas
… species have since been removed or reduced by exotic plants that were introduced and from the reduction in the frequency of both wild and prescribed fires. A diverse layer of understory species can still be seen today, but not often in the historical savanna setting that is desirable in …
-
Historical ecology of alien woody plants in the vicinity of Cape Town, South Africa
… shown to be related to the intense interest in exotic plants that was characteristic of Britain and its colonies in the early and middle 19th century. A major outcome of the research is the presentation of a chronology of man's relationship with these species from 1845 to 1975. This includes …
-
Mapping Elaeagnus Umbellata on Coal Surface Mines using Multitemporal Landsat Imagery
Invasive plant species threaten native plant communities and inhibit efforts to restore disturbed landscapes. Surface coal mines in the Appalachian Mountains are some of the most disturbed landscapes in North America. Moreover, there is not a comprehensive understanding of the land cover …
Page 1 of 2