Data/hora: 06/06/2024 04:49:33

Provedor de dados: 	Neotropical Ichthyology	
País: 	Brazil	
Título: 	Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis	
Autores: 	Moncayo-Estrada,Rodrigo; Escalera-Gallardo,Carlos; Lind,Owen T.	
Data: 	2011-01-01	
Ano: 	2011	
Palavras-chave: 	Dry season; Rainy season; Silversides; Temporal scale; Volume change.	
Resumo: 	This study addresses the influence of water-level fluctuations on fish distribution at two temporal scales: seasonal (dry and rainy) and interannual (low and high volume conditions). The analysis of abundance relationships among three zooplanktivore Chirostoma species at fifteen sites in Lake Chapala, Mexico, revealed the significant influence of contrasting conditions (P=0.0002). Seasonally, segregation was more related to species dominance in the dry season and exclusively related to environmental characteristics in the rainy season. Interanually, biotic influence occurred in the shallowest and the deepest episodes of the lake. Environmental characteristics influenced species distribution when the lake reached 25% of its volume. Site, depth, temperature, and salinity were the leading factors influencing fish distribution. These results emphasize the necessity to implement different management strategies according to lake volume, particularly when a critical threshold is reached.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400012	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/S1679-62252011000400012	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.9 n.4 2011	
Fonte: 	info:eu-repo/semantics/openAccess