A multiple hypothesis approach to explain species richness patterns in neotropical stream-dweller fish communities
Nenhuma Miniatura disponível
Data
2018
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Several hypotheses are used to explain species richness patterns. Some of them (e.g. species-
area, species-energy, environment-energy, water-energy, terrestrial primary productivity,
environmental spatial heterogeneity, and climatic heterogeneity) are known to explain
species richness patterns of terrestrial organisms, especially when they are combined. For
aquatic organisms, however, it is unclear if these hypotheses can be useful to explain for
these purposes. Therefore, we used a selection model approach to assess the predictive
capacity of such hypotheses, and to determine which of them (combined or not) would be
the most appropriate to explain the fish species distribution in small Brazilian streams. We perform the Akaike's information criteria for models selections and the eigenvector analysis
to control the special autocorrelation. The spatial structure was equal to 0.453, Moran's I,
and require 11 spatial filters. All models were significant and had adjustments ranging from
0.370 to 0.416 with strong spatial component (ranging from 0.226 to 0.369) and low adjustments
for environmental data (ranging from 0.001 to 0.119) We obtained two groups of
hypothesis are able to explain the richness pattern (1) water-energy, temporal productivityheterogeneity
(AIC = 4498.800) and (2) water-energy, temporal productivity-heterogeneity
and area (AIC = 4500.400). We conclude that the fish richness patterns in small Brazilian
streams are better explained by a combination of Water-Energy + Productivity + Temporal
Heterogeneity hypotheses and not by just one.
Descrição
Palavras-chave
Citação
VIEIRA, Thiago Bernardi et al. A multiple hypothesis approach to explain species richness patterns in neotropical stream-dweller fish communities. PLoS One, San Francisco, v. 13, n. 9, e0204114, 2018. DOI: 10.1371/journal.pone.0204114. Disponível em: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0204114. Acesso em: 6 jan. 2023.