Grass invasion increases top-down pressure on an amphibian via structurally mediated effects on an intraguild predator
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چکیده
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A greater diversity of natural enemies can in some cases disrupt prey suppression, particularly when natural enemies engage in intraguild predation, where natural enemies compete with and prey upon each other. However, empirical studies have often demonstrated enhanced prey suppression despite intraguild predation. A recent theoretical study proposed the hypothesis that, when the intermediate p...
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1. Top-down control can be an important determinant of ecosystem structure and function, but in oceanic ecosystems, where cascading effects of predator depletions, recoveries, and invasions could be significant, such effects had rarely been demonstrated until recently. 2. Here we synthesize the evidence for oceanic top-down control that has emerged over the last decade, focusing on large, high ...
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Complex, interactive ecological constraints regulate species distributions, and understanding these factors is crucial for predicting species persistence.We used occupancy analysis, which corrects for imperfect detection, to test the importance of abiotic and biotic habitat and landscape factors on probability of occupancy by Boreal Chorus Frog (Pseudacris maculata (Agassiz, 1850)) tadpoles. We...
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ژورنال
عنوان ژورنال: Ecology
سال: 2014
ISSN: 0012-9658
DOI: 10.1890/13-1715.1