Data/hora: 09/06/2024 16:35:35

Provedor de dados: 	103	
País: 	Brazil	
Título: 	Looking through a dirty glass: how different can the characterization of a fish fauna be when distinct nets are used for sampling?	
Autores: 	Ceni,Gianfranco; Vieira,João Paes.	
Data: 	2013-10-01	
Ano: 	2013	
Palavras-chave: 	Freshwater; Gear; Littoral zone; Sampler comparison.	
Resumo: 	The present study compares fish species composition, dominance, and size-structure patterns at an open sand beach area (32°15'S, 52°46'W) in Mirim Lake, RS, Brazil, estimated from samples collected with two distinct beach seine nets. The BS-9m net is 9 m long and 1.5 m high, and is made with a 5 mm multifilament mesh on its central portion and 12 mm on the side wings. The BS-30m net is 30 m long and 1.8 m high, with a 12 mm monofilament nylon mesh all over the net, except for a 30 cm strip made with a 12 mm multifilament mesh on the lower portion. Thirty hauls were performed with both nets resulting in a total of 849 fish captured, comprising 34 species. BS-9m was selective for individuals smaller than 60 mm TL and BS-30m for individuals larger than 60 mm TL. Low values of the faunal similarity (JI = 0.41, ANOSIM R = 0.2309, p &lt; 0.0001) and numeric dominance (PSI = 0.46) indexes were revealed. We suggest that the concurrent use of both samplers provide a better description of the fish fauna of shallow areas. However, due to their robustness, rusticity, and ease of use and maintenance, small multifilament seines are indicated for regular work in environments without obstacles and with little open sand area available for sampling.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000500005	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S1984-46702013000500005	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.30 n.5 2013	
Fonte: 	info:eu-repo/semantics/openAccess