Results 251 to 260 of about 137,418 (291)
Endangered, apparently: the role of apparent competition in endangered species conservation
Animal Conservation, 2010 AbstractConservation biologists have reported growing evidence of food‐web interactions as causes of species endangerment. Apparent competition is an indirect interaction among prey species mediated by a shared predator, and has been increasingly linked to declines of prey species across taxa.
DeCesare N. J. +3 more
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Ecology, 2015
Direct and indirect effects can play a key role in invasions, but experiments evaluating both are rare. We examined the roles of direct competition and apparent competition by exotic Amur honeysuckle (Lonicera maackii) by manipulating (1) L. maackii vegetation, (2) presence of L.
John L Orrock +2 more
exaly +3 more sources
Direct and indirect effects can play a key role in invasions, but experiments evaluating both are rare. We examined the roles of direct competition and apparent competition by exotic Amur honeysuckle (Lonicera maackii) by manipulating (1) L. maackii vegetation, (2) presence of L.
John L Orrock +2 more
exaly +3 more sources
The effect of the Holling type II functional response on apparent competition
Theoretical Population Biology, 2006This article analyzes the classical 2-resource-1-consumer apparent competition community module with the Holling type II functional response. Two types of resource regulation (top-down vs. combined top-down and bottom-up) and two types of consumer behaviors (inflexible consumers with fixed preferences for resources vs.
Vlastimil Kriváň, Jan Eisner
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Subsidies to predators, apparent competition and the phylogenetic structure of prey communities
Oecologia, 2013 Ecosystems are fragmented by natural and anthropogenic processes that affect organism movement and ecosystem dynamics. When a fragmentation restricts predator but not prey movement, then the prey produced on one side of an ecosystem edge can subsidize predators on the other side.
Helmus, M.R. +2 more
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Apparent competition between parasitoids mediated by a shared hyperparasitoid
Ecology Letters, 2000Cocoons of the specialist parasitoidCotesia melitaearum, which attacks the Glanville fritillary butterfly in the Åland islands of SW Finland, are parasitized by the generalist hyperparasitoidGelis agilis. We added experimentally to the system a second host species forG. agilis,C. glomerata, with whichC. melitaearumdoes not compete for resources.
Saskya Van Nouhuys, Ilkka Hanski
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Predation on nests: a case of apparent competition
Oecologia, 1994We describe a field experiment designed to evaluate indirect effects in a prey community sharing common predators. A simple prey community was mimicked with two types of artificial nests. Firstly, it was shown that predation rate increased with nest density when only a single prey was present.
Herbert, Hoi, Hans, Winkler
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Apparent competition and recovery from infection
Journal of Theoretical Biology, 2004We use mathematical models to analyse how the recovery rate from infection influences the fitness of a host in a setting of interspecific competition. We show that sub-optimal immunity against pathogens can be advantageous for the host in the presence of cross-species infection. Weaker immunity allows the parasite to be used as a biological weapon, and
Wodarz, Dominik, Sasaki, Akira
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Short-Term Apparent Competition
The American Naturalist, 1987Interspecific interactions reflect the cumulative consequences of individual behavioral acts. The foraging decisions made by predators influence the way in which predation shapes the structure of prey communities. Alternative prey species co-occurring in a patch embedded in a matrix of many similar patches may interact through a shared mobile predator ...
Robert D. Holt, Burt P. Kotler
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Conservation Strategies for Species Affected by Apparent Competition
Conservation Biology, 2013Abstract Apparent competition is an indirect interaction between 2 or more prey species through a shared predator, and it is increasingly recognized as a mechanism of the decline and extinction of many species. Through case studies, we evaluated the effectiveness of 4 management strategies for species affected by apparent competition:
Heiko U, Wittmer +3 more
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