Competitive intransitivity, population interaction structure, and strategy coexistence
نویسندگان
چکیده
منابع مشابه
Competitive intransitivity promotes species coexistence.
Using a spatially explicit cellular automaton model with local competition, we investigate the potential for varied levels of competitive intransitivity (i.e., nonhierarchical competition) to promote species coexistence. As predicted, on average, increased levels of intransitivity result in more sustained coexistence within simulated communities, although the outcome of competition also becomes...
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Competitive intransitivity occurs when species' competitive abilities cannot be listed in a strict hierarchy, but rather form competitive loops, as in the game 'Rock-Paper-Scissors'. Indices are useful for summarizing intransitivity in communities; however, as with most indices, a great deal of information is compressed into single number. So while recent ecological theory, experiments, and nat...
متن کاملIntransitivity and coexistence in four species cyclic games.
Intransitivity is a property of connected, oriented graphs representing species interactions that may drive their coexistence even in the presence of competition, the standard example being the three species Rock-Paper-Scissors game. We consider here a generalization with four species, the minimum number of species allowing other interactions beyond the single loop (one predator, one prey). We ...
متن کاملMatrix models for quantifying competitive intransitivity from species abundance data
W. Ulrich ([email protected]), Chair of Ecology and Biogeography, Nicolaus Copernicus Univ. in Toruń, Lwowska1, PL-87-100 Toruń, Poland. – S. Soliveres and F. T. Maestre, Área de Biodiversidad y Conservación, Depto de Biología y Geología, Escuela Superior de Ciencias Experimentales y Tecnología, Univ. Rey Juan Carlos, ES-28933 Móstoles, Spain. SS also at: Inst. of Plant Sciences, Univ. of Bern, Al...
متن کاملCompetitive intransitivity and size-frequency distributions of interacting populations.
The competitive ranking of three marine sessile organisms was determined from overgrowth observations and found to be intrasitive. Overgrowth results were dependent upon relative vertical relief which, in turn, was related to colony area. Discriminant function analysis demonstrates that competitive rankings can be largely predicted on the basis of knowledge of the size-frequency distribution of...
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ژورنال
عنوان ژورنال: Journal of Theoretical Biology
سال: 2015
ISSN: 0022-5193
DOI: 10.1016/j.jtbi.2014.10.010