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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 Krivan
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Wildlife Society Bulletin, 2006 Apparent competition is the process by which one prey species may indirectly cause the decline in another species by sustaining a common predator. I argue apparent competition caused Sierra Nevada bighorn sheep (Ovis canadensis californiana) and Channel ...
Luke Gibson
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Evaluating apparent competition in limiting the recovery of an endangered ungulate
Oecologia, 2012Predation can disproportionately affect endangered prey populations when generalist predators are numerically linked to more abundant primary prey. Apparent competition, the term for this phenomenon, has been increasingly implicated in the declines of endangered prey populations.
Heather E, Johnson +5 more
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Ecology, 1990
In 1980 the variegated leafhopper (VLH), Erythroneura variabilis, invaded California's San Joaquin Valley, and has since rapidly increased in numbers to become a major pest in vineyards. Correlated with the invasion by VLH are declining populations of congeneric grape leafhopper (GLH), E. elegantula.
W. H. Settle, L. T. Wilson
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In 1980 the variegated leafhopper (VLH), Erythroneura variabilis, invaded California's San Joaquin Valley, and has since rapidly increased in numbers to become a major pest in vineyards. Correlated with the invasion by VLH are declining populations of congeneric grape leafhopper (GLH), E. elegantula.
W. H. Settle, L. T. Wilson
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Predation, apparent competition, and the structure of prey communities
Theoretical Population Biology, 1977Abstract It is argued that alternate prey species in the diet of a food-limited generalist predator should reduce each other's equilibrial abundances, whether or not they directly compete. Such indirect, interspecific interactions are labeled apparent competition . Two examples are discussed in which an observed pattern of habitat segregation was at
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Apparent Competition between Two Aphid Species
The Journal of Animal Ecology, 19971. The population dynamics of colonies of nettle aphids (Microlophium carnosum Buckton) were studied on potted nettle plants placed beside plots of grass on some of which outbreaks of grass aphids (Rhopalosiphum padi L.) had been induced by fertilizer application. 2.
C. B. Muller, H. C. J. Godfray
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Enhancing parasitism of wheat aphids through apparent competition: a tool for biological control
Agriculture, Ecosystems and Environment, 2004 As cereal aphids are only present during 2-3 months per year in cereal crops, their parasitoids rely on alternative hosts to complete their life cycle. These parasitoids often have the same aphid hosts, which leads to apparent competition. Development on
Thierry Hance
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Emergence asynchrony between herbivores leads to apparent competition in the field
Ecology, 2011It has been established that herbivore populations can be structured by apparent competition, even if they do not compete directly for resources. But we lack evidence on the mechanisms behind such indirect competition. This study shows that temporal asynchronies in emergence time lead to apparent competition via shared natural enemies in a leafminer ...
Eleanor J, Blitzer, Stephen C, Welter
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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
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Subsidies to predators, apparent competition and the phylogenetic structure of prey communities
Oecologia, 2013Ecosystems 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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