Data/hora: 02/06/2024 13:01:33

Provedor de dados: 	103	
País: 	Brazil	
Título: 	Small-scale experimental contamination with diesel oil does not affect the recolonization of Sargassum (Fucales) fronds by vagile macrofauna	
Autores: 	Grande,Henrique; Reis,Marcelo; Jacobucci,Giuliano Buzá.	
Data: 	2012-04-01	
Ano: 	2012	
Palavras-chave: 	Colonization; Marine macrofauna; Phytal.	
Resumo: 	Coastal regions are subject to various forms of environmental impacts, such as spills of crude oil and associated products, with a wide range of effects on benthic biodiversity. This study characterized the patterns of recolonization of the macrofauna associated with the brown alga Sargassum cymosum(C. Agardh), on fronds contaminated by diesel oil in a small-scale field experiment. We collected 40 fronds of S. cymosum from an algal bed in southeastern Brazil and defaunated each frond by immersion in fresh water. Half of the fronds were then immersed in seawater (control group) and the other half in a mixture of 50% diesel oil and 50% seawater (impacted group). The test fronds were returned to the algal bed, and natural recolonization took place over a period of 12 days. Samples of the vagile macrofauna were taken randomly at three-day intervals over the course of the recolonization period. No significant differences in the densities of most taxa were found between the impact treatment (IG) and control treatment (CG). At the end of the recolonization period (day 12), the faunal composition of the treated fronds was very similar to the natural conditions, indicating a high rate of community recovery and suggesting that benthic associations can be rather resilient to diesel-oil impacts on a small scale.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200006	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S1984-46702012000200006	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.29 n.2 2012	
Fonte: 	info:eu-repo/semantics/openAccess