Results 251 to 260 of about 1,812,730 (293)

Apparent competition structures ecological assemblages

open access: yesNature, 1997
Competition is a major force in structuring ecological communities1. It acts directly2 or indirectly, in which case it may be mediated by shared natural enemies and is known as ‘apparent competition’3,4,5,6. The effects of apparent competition on species coexistence are well known theoretically7,8 but have not previously been demonstrated empirically ...
Michael B. Bonsall, M P Hassell
exaly   +4 more sources

Apparent competition with an invasive plant hastens the extinction of an endangered lupine [PDF]

open access: yesEcology, 2010
Invasive plants may compete with native plants by increasing the pressure of native consumers, a mechanism known as “apparent competition.” Apparent competition can be as strong as or stronger than direct competition, but the role of apparent competition has rarely been examined in biological invasions.
Emily M. Dangremond, Tiffany M. Knight
exaly   +5 more sources

APPARENT COMPETITION OR APPARENT MUTUALISM? SHARED PREDATION WHEN POPULATIONS CYCLE

open access: yesEcology, 1998
We use simple mathematical models to explore the indirect interactions between two prey species that share a predator when all three species undergo population cycles. The results are compared to analogous findings for systems that reach a stable equilibrium point.
James D. Roth   +2 more
exaly   +3 more sources

Pattern formation and coarsening dynamics in apparent competition models [PDF]

open access: yesChaos, Solitons and Fractals, 2022
9 pages, 8 ...
Josinaldo Menezes da Silva   +1 more
exaly   +4 more sources
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Predation on nests: a case of apparent competition

Oecologia, 1994
We 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
openaire   +2 more sources

Apparent competition and recovery from infection

Journal of Theoretical Biology, 2004
We 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
openaire   +3 more sources

Short-Term Apparent Competition

The American Naturalist, 1987
Interspecific 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
openaire   +1 more source

Apparent competition and native consumers exacerbate the strong competitive effect of an exotic plant species

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, Nicholas A. Barber
exaly   +3 more sources

Understanding intraspecific and apparent competition

2022
AbstractInterspecific competition shares the same dependence on consumer–resource interactions as intraspecific competition and apparent competition. These two related interactions are the subject of this chapter. Both interactions are present in most, if not all, systems in which interspecific competition occurs.
openaire   +1 more source

Conservation Strategies for Species Affected by Apparent Competition

Conservation Biology, 2013
Abstract 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
openaire   +2 more sources

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