Results 151 to 160 of about 79,461 (198)

Interspecific Competition Models Derived from Competition Among Individuals

Bulletin of Mathematical Biology, 2012
This paper demonstrates how discrete-time models describing population dynamics of two competing species can be derived in a bottom-up manner by considering competition for resources among individuals and the spatial distribution of individuals. The competition type of each species is assumed to be either scramble, contest, or an intermediate between ...
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Interspecific Competition and Exploitation

Journal of the Fisheries Research Board of Canada, 1963
The consequences of exploitation of either or both of a pair of competing species are examined using the Lotka-Volterra equations. The removal of a fixed proportion of a population on an instantaneous basis shifts the equilibrium population sizes for both the exploited species and its competitor.
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Interspecific competition in metapopulations

Biological Journal of the Linnean Society, 1991
The assumptions and predictions of metapopulation models for competing species are discussed in relation to empirical studies of colonization and extinction in metapopulations. In three species of Daphnia in rockpools, interspecific competition increased local extinction rates, while no effects on colonization rates were detected.
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Spatial heterogeneity and interspecific competition

Theoretical Population Biology, 1982
A model of two competing species is presented in which each species is able to disperse over a single spatial axis. The spatial axis is composed of two intervals with different carrying capacities. We ask the question: If species one is alone and at population dynamic equilibrium, then when can species two successfully invade when rare?
Pacala, S. W., Roughgarden, J.
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Interspecific competition in butterflies

1974
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Speciation, Adaptation and Interspecific Competition

Oikos, 1984
Apres avoir considere les concepts d'espece et de speciation on envisage les effets possibles de la competition au niveau de l'historique de la speciation et de la post-speciation de l'espece.
Walter, Grenville H, Hulley, Patrick E, Craig, Adrian J F K   +2 more
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Lotka–Volterra Interspecific Competition

2009
Different species frequently compete for limiting resources, and as a result have negative impacts on each other. For example, change in species composition during secondary succession (Fig. 5.1) appears mediated by, among other things, a species' ability to intercept light, grow, and cast shade over other species.
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Mode of competition and interspecific competitive outcomes

1993
Abstract Competition (both intra- and interspecific) has been one of the most intensively studied subjects in ecological research (Connell 1983; Schoener 1983; Abrams 1988). This is the first and most important step in bridging the gap between community ecology and lower levels of ecological phenomena at the population and individual ...
Koichi Fujii, Yukihiko Toquenaga
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Field Experiments on Interspecific Competition

The American Naturalist, 1983
The study of interspecific competition has long been one of ecology's most fashionable pursuits. Stimulated in part by a simple theory (Lotka 1932; Volterra 1926; Gause 1934; Hutchinson 1959; MacArthur and Levins 1967), ecologists gathered numerous data on the apparent ways species competitively coexist or exclude one another (reviews in Schoener 1974b,
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Interspecific Competition and Community Structure

1984
Much of our previous discussion has relied, whether implicitly or explicitly, on considerations of ecological competition. In the last chapter particularly, such consideration became more and more explicit as we introduced ideas of both inter- and intraspecific competition and their role in shaping the niche, niche position, niche breadth and degree of
R. J. Putman, S. D. Wratten
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