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- Title
The impact of a strong natural hypoxic event on the toadfish Aphos porosus in Coliumo Bay, south-central Chile.
- Authors
Hernández-Miranda, Eduardo; Quiñones, Renato A.; Aedo, Gustavo; Díaz-Cabrera, Ernesto; Cisterna, José
- Abstract
The article discusses a study that assesses the inter-annual effects of hypoxia on the population of A. porosus inhabiting the soft-bottom benthos in Coliumo Bay, Chile. It evaluates the inter-annual dynamics of density and biomass, identifies the inter-annual recruitment dymanics and discusses the results within the context of an Allee effect and its ecological implications. Dead and dying fish were gathered from Coliumo Bay on January 3, 2008 and 396 individuals of A. porosus were sampled from a sandy, rocky intertidal zone fronting Villarrica Cove, Dichato in Coliumo Bay. It suggests the possibility that after the natural hypoxic event, the abundance of A. porosus within the bay shifted towards a low or unstable condition thus increasing the spatial segregation of individuals.
- Subjects
HYPOXEMIA; POPULATION; BENTHOS; FISHES; SEGREGATION; INTERTIDAL zonation
- Publication
Revista de Biologia Marina y Oceanografía (RBMO), 2012, Vol 47, Issue 3, p475
- ISSN
0717-3326
- Publication type
Article