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 11 of 11 for “"biotic resistance"”.
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Ecology of acidification and recovery in Welsh upland streams
… were undertaken to test two hypotheses (biotic resistance and resource limitation) proposed to explain the observed delays in faunal recolonisation. A resident-colonist competition experiment revealed no evidence in support of biotic resistance as mediated through interspecific …
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Fish Assemblage Structure, Trophic Ecology, and Potential Effects of Invading Asian Carps in Three Missouri River Tributaries, South Dakota
… rivers) was persistent and displayed signs of biotic resistance. Silver carp population abundance increased each year of sampling (e.g., 2009-2012) comprising 45% of catches in 2012; however Bighead Carp did not follow this same pattern as catches remained minimal during this period. …
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Biotic and abiotic factors influencing the invasion success and ecological impacts of the Pacific oyster, Crassostrea gigas
… ecosystems are subject to a wide variety of abiotic conditions. Water motion within coastal ecosystems is a key abiotic factor controlling species abundances and biological processes yet is often not measured. Coastal ecosystems are also susceptible to invasive species due to increased …
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The Role of Native Diversity and Successional Processes on Communityinvasibility in Riparian Primary Forest
… context. Explored here is the potential for biotic resistance to reduce invasibility of riparian successional forests at the landscape scale (~100ha) and address the following: 1) Does exotic species richness and percent cover change across successional time? 2) What is the relationship …
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The Wandering Mussels: Analyzing the Ecological Impact of Dreissenid Mollusks Across Spatial and Temporal Scales in Eastern Ontario Using Environmental DNA
… revealed successive failures of native biotic resistance in the Bay of Quinte. Pre-invasion eutrophication depleted obligate aerobic nutrient-cyclers, establishing a deep-anaerobic fermentative network. The subsequent dreissenid invasion circa 1990 catalyzed a compounding meltdown; …
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Using patchy plant invasions to understand how diffuse interactions modify facilitation and competition
… complex dynamics potentially driving apparent biotic resistance by <i>Pinus</i> to one exotic species but facilitation of a second. I found that <i>Pinus</i> directly inhibited <i>Centaurea</i> growth through shade and litter effects and attenuated the competitive effects of <i>Centaurea</i>. …
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Using patchy plant invasions to understand how diffuse interactions modify facilitation and competition
… complex dynamics potentially driving apparent biotic resistance by <i>Pinus</i> to one exotic species but facilitation of a second. I found that <i>Pinus</i> directly inhibited <i>Centaurea</i> growth through shade and litter effects and attenuated the competitive effects of <i>Centaurea</i>. …
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COEXISTENCE, RESILIENCE AND RESISTANCE OF MARINE INVERTEBRATE COMMUNITIES ACROSS A LATITUDINAL GRADIENT
… such as coexistence, community stability, and resistance. I studied communities of marine invertebrates across over 7000 km of continuous coastal habitat spanning 47-degree latitudinal range on the Eastern North and Central Pacific coast, from tropical Panama to subarctic Alaska. Experiments …
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Biological control of Culex mosquitoes using multiple predators
… mortality through disease. Emergent insecticide resistance and environmental concerns have recently driven increased interest in biological control approaches for the management of vector mosquito populations. Copepods have been particularly successful biocontrol agents for mosquitoes. However, …
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Diversity, Invasibility, and Stability of Appalachian Forests across an Experimental Disturbance Gradient
… 2). Contrary to popular ecological theories of biotic resistance, the most diverse sites tended to be more easily invaded following intense canopy disturbance. Interestingly, none of the sites in this study were dominated by invasive plants, which led me to ask whether dominant tree species in …