A multiple hypothesis approach to explain species richness patterns in neotropical stream-dweller fish communities

• Autor(a) principal: Vieira, Thiago Bernardi
• Data de Publicação: 2018
• Outros Autores: Pavanelli, C. S., Casatti, Lilian, Smith, Welber Senteio, Benedito, Evanilde, Mazzoni, Rosana, Sánchez-Botero, Jorge Iván, Garcez, Danielle Sequeira, Lima, Sergio Maia Queiroz, dos Santos Pompeu, Paulo, Agostinho, Carlos Sérgio, Montag, Luciano F.A., Zuanon, Jansen, Aquino, Pedro Podestà Uchôa de, Cetra, Maurício, Tejerina-Garro, Francisco Leonardo, Duboc, Luiz Fernando, Corrêa, Ruanny Casarim, Pérez-Mayorga, María Angélica, Brej?o, Gabriel Louren?o, Mateussi, Nadayca Thayane Bonani, Castro, Míriam Aparecida de, Leitão, Rafael Pereira, Mendonça, Fernando Pereira de, Silva, Leandra Rose Palheta da, Frederico, Renata Guimarães, Marco Júnior, Paulo de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional do INPA
• Texto Completo: https://repositorio.inpa.gov.br/handle/1/14657
• topic: Animals Community; Brasil; Ecosystem Monitoring; Environmental Parameters; Fish; Hypothesis; Model; Neotropical Stream Dweller Fish; Neotropics; Nonhuman; Prediction; Spatial Analysis; Species Distribution; Species Richness; Animals; Biodiversity; Fish; Geography; Physiology; Regression Analysis; River; Species Difference; Statistics; Theoretical Model; Tropic Climate; Animalss; Biodiversity; Brasil; Fishes; Geography; Models, Theoretical; Regression Analysis; Rivers; Species Specificity; Statistics As Topic; Tropical Climate

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 productivity-heterogeneity (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. © 2018 Vieira et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.