Data/hora: 11/06/2024 15:04:26

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Effect of environmental factors on the abundance of decapod crustaceans from soft bottoms off southeastern Brazil	
Autores: 	FURLAN,MICHELE; CASTILHO,ANTONIO L.; FERNANDES-GÓES,LISSANDRA C.; FRANSOZO,VIVIAN; BERTINI,GIOVANA; COSTA,ROGéRIO C. DA.	
Data: 	2013-01-01	
Ano: 	2013	
Palavras-chave: 	Benthic species; Decapod crustaceans; Environmental factors; Habitat selection.	
Resumo: 	This study investigated the importance of variations in environmental factors affecting the abundance patterns of decapods on the southeastern Brazilian coast. Sampling was carried out monthly from January 1998 through December 1999 in Ubatumirim and Mar Virado, Ubatuba region, using a commercial shrimp fishing boat equipped with double-rig nets. Six areas adjacent to rocky shores were chosen. Bottom-water samples were collected using a Nansen bottle, to measure the temperature and salinity. Sediment samples were also obtained by means of a Van Veen grab, for determination of texture and organic-matter content. The association of environmental factors with species abundance was evaluated by Canonical Correspondence Analysis (α = 0.05). Forty-one species of Decapoda were used in the multivariate analysis. The analysis indicated that sediment texture (phi) and bottom temperature were the main factors correlated (p &lt; 0.05) with the spatial and temporal abundance of the species. Considering the study region as faunal transition zone, including a mixture of species of both tropical and subantarctic origin, the species responded differently to environmental factors, mainly temperature. It is conceivable that the decapods adjust their distribution according to their intrinsic physiological limitations, possibly as a result of the available resources.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401345	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201394812	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.85 n.4 2013	
Fonte: 	info:eu-repo/semantics/openAccess