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 5 of 5 for “"stress gradient hypothesis"”.
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Applying ecological models to positive interactions among lotic fishes: implications for population and community regulation at multiple spatial scales
… cavity nesting vertebrate communities) and the stress gradient hypothesis (previously applied almost exclusively to plant communities) for predicting which associate species spawn on nests built by various nest building species, and the consequences of these choices, respectively; and (3) using …
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Assessing the Effects of Biotic and Abiotic Factors on Ephedra viridis Seed Size
… influence on seed size across environmental gradients.The primary findings from each of my three chapters are:1) The likelihood of harvester ants harvesting seeds decreases with increasing intraspecific seed mass and increases in microhabitat cover. However, harvester ant intraspecific seed …
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Positive and negative dynamics of plant-plant interactions along environmental gradients: Effects at individual and community level
… Interaktionen untersucht: entlang von biotischen Gradienten (Vielfalt, Zusammensetzung und Identität der Arten einer Gemeinschaft), entlang von abiotischen Gradienten (Extremwetterereignisse, Stickstoffverfügbarkeit) und in Einheiten verschiedener räumlicher Abmessungen. Drei Leitfragestellungen …
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Savanna dynamics under extreme conditions
… conditions for trees in accordance with the Stress Gradient Hypothesis. The exclusion of grasses from the model further demonstrated this: tree cover was lower in the absence of grasses, indicating that the benefits of grass facilitation outweighed the costs of grass competition for trees. …