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Evidences of El Niño effects on the mullet fishery of the Patos Lagoon estuary BABT
Vieira,João Paes; Garcia,Alexandre Miranda; Grimm,Alice Marlene.
Based on biological and meteorological long-term database (1979-1983 and 1996-2000), we analyzed the variation in the juvenile recruitment and artisanal fishery landings of the mullet (Mugil platanus) in the Patos Lagoon estuary and its relationships with the regional rainfall and estuarine salinity anomalies during two strong El Niño events (1982-83 and 1997-98). Juvenile and adult mullets declined in abundance under the high rainfall and near-zero salinity that prevailed in the estuary during both El Niño events. We proposed two different hypotheses to explain the El Niño-induced effects on the juvenile and adult stages of the mullet in the estuary. First, high freshwater outflow during a very strong El Niño might render ineffective the mechanism of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artisanal fishery; ENSO; Climatic effects; Long-term studies; PELD; LTER.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200025
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