Elements of fish metacommunity structure in Neotropical freshwater streams
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2020
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The identification of the mechanisms underlying patterns of species co-occurrence
is a way to identify which process(es) (niche, neutral, or both) structure metacommunities.
The current paper had the goal of identifying patterns of co-occurrence in
Neotropical stream fish and determining which processes structure the fish metacommunity,
and identifying any gradients underlying this structure. Results indicated
that the metacommunity formed by the species pool was structured by a pattern of
nested co-occurrence (hyperdispersed species loss) and a mass-effect mechanism.
However, a set of core species, displaying a Clementsian pattern, was structured by
a species-sorting mechanism. Both, hyperdispersed species loss and the Clementsian
patterns point to a discrete set of communities within the metacommunity. These
communities could be isolated by the water physicochemical conditions or morphological
characteristics of the stream channel.
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VIEIRA, Thiago Bernardi; BRASIL, Leandro Schlemmer; SILVA, Liriann Chrisley N.; TEJERINA-GARRO, Francisco Leonardo; AQUINO, Pedro de Podestà Uchôa; POMPEU, Paulo S.; MARCO JR., Paulo De. Elements of fish metacommunity structure in Neotropical freshwater streams. Ecology and Evolution, Oxford, v. 10, n. 21, p. 12024-12035, 2020. DOI: 10.1002/ece3.6804. Disponível em: https://onlinelibrary-wiley.ez49.periodicos.capes.gov.br/doi/10.1002/ece3.6804. Acesso em: 9 fev. 2023.