Data/hora: 06/06/2024 06:47:36

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Responses of the molluscan fauna to environmental variations in a Halodule wrightii Ascherson ecosystem from Northeastern Brazil	
Autores: 	BARROS,KCRISHNA V.S.; ROCHA-BARREIRA,CRISTINA A.	
Data: 	2013-01-01	
Ano: 	2013	
Palavras-chave: 	Benthic communities; Hypnea musciformis; Marine food web; Northeast of Brazil; Seagrasses; Tricolia affinis.	
Resumo: 	ABSTRACTThis study observed the spatial and temporal distributions of molluscs in a Halodule wrightii meadow, verifying if they respond satisfactorily to seasonal changes in this seagrass ecosystem. Twenty-four species were identified. Chitons were rare, bivalves had greater number of species (11), followed by gastropods (9) which were also the most abundant class (73%). All classes were more abundant in the belowground. The most common species was Tricolia affinis, especially in aboveground. The occurrence of some species in both strata or out of the expected stratum may have been influenced by shallow layer of the sediment considered in this study, hydrodynamic, and low biomass of the studied meadow. According to univariate and multivariate analyses, despite of molluscan descriptors had been related to variables associated with rainfall, the seagrasses had an important role on the seasonal and vertical variations of the molluscan fauna. The biomass of the epiphyte Hypnea musciformis was correlated to temporal variations of the species from aboveground, indicating its secondary role for this community. The molluscs were sensible to environmental variations, and also reflected seasonal changes of the seagrass, showing that damages on these meadows reflect even at lower levels of the marine food web.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401397	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-37652013101212	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.85 n.4 2013	
Fonte: 	info:eu-repo/semantics/openAccess