Padrão de distribuição de espécies de formigas (Hymenoptera: Formicidae) e o efeito de variáveis ambientais em um gradiente latitudinal na Amazônia
Understanding how the number of species varies along the environment at different scales is a challenge. Nowadays we have a reasonable idea of how the species are distributed specially at small and continental scales, but information at mesoscales are stills scarce. Here we investigated the role...
| Autor principal: | Santos Neto, Cláudio Rabelo dos |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/12389 http://lattes.cnpq.br/8197231176410756 |
| Resumo: |
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Understanding how the number of species varies along the environment at different
scales is a challenge. Nowadays we have a reasonable idea of how the species are
distributed specially at small and continental scales, but information at mesoscales are stills
scarce. Here we investigated the role of regional variables (temperature, precipitation and
vegetation type) and local edaphic factors (soil clay content and slope of terrain) on ants
species richness at regional and local scale along a latitudinal gradient of approximately
1,350 km in the central Amazon forest. We collected ants in permanent plots using five
litter samples and/or ten pitfall samples. In total, we sampled 139 plots and 1,270 samples.
We collected 510 species/morphospecies representing 77 genera and 13 subfamilies. At
regional scale, the linear model using annual mean temperature, annual mean precipitation,
proportion of soil clay content, terrain slope and vegetation type explained 40% of the
variation in species richness for pitfall data and 70% to Winkler data. At local scale, the
number of ant species sampled with pitfalls and winkler sacks were not related with the
predictors variables investigated. Our results, showed that several environmental variables
normally associated with local species assembly process, can also operate in larger scales. |