Data/hora: 13/06/2024 12:43:36

Provedor de dados: | 83
País: | Brazil
Título: | Functional differentiation between fish assemblages from forested and deforested streams
Autores: | Teresa,Fabrício Barreto; Casatti,Lilian; Cianciaruso,Marcus Vinicius.
Data: | 2015-06-01
Ano: | 2015
Palavras-chave: | Community ecology; Deforestation; Functional diversity; Traits.
Resumo: | We tested the hypothesis that streams in deforested areas shelter different fish communities to nearby forested areas, and that these disparities are due to environmental parameters that limit or benefit different species according to their functional traits. We compared the community composition of three south east Brazilian streams flanked by riparian forest with three nearby streams in deforested areas. The following functional traits were considered: diet, habitat use, water flow preference, size, and hypoxia tolerance. Differentiation between forested and deforested streams corresponded with the different contributions of three functional groups. Species reported in the literature to be hypoxia tolerant, and exhibiting a variable combination of the other traits prevailed in deforested streams, although we did not find substantial differences in oxygen levels between forested and deforested streams. In forested streams, benthic species associated with a high water flow and an insectivorous diet were dominant. Changes in streams induced by deforestation which are associated with habitat availability, food resources, and physicochemical conditions appear to restrict the occurrence of specialized species and instead benefit tolerant generalists.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200361
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/1982-0224-20130229
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.13 n.2 2015
Fonte: | info:eu-repo/semantics/openAccess