Biotic and environmental factors affect Southwest Atlantic saltmarsh use by juvenile fishes
| Autor: | Macarena S. Valiñas, Oscar Iribarne, Mariana Addino, Lucas M. Molina, Eduardo M. Acha, Diana I. Montemayor |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
SPARTINA ALTERNIFLORA SALTMARSH
Aquatic Science Biology HABITAT USE Oceanography Spartina alterniflora purl.org/becyt/ford/1 [https] Ciencias Biológicas FISH purl.org/becyt/ford/1.6 [https] Ecology Evolution Behavior and Systematics geography Polychaete geography.geographical_feature_category Biotic component BIOTIC FACTORS Ecology Menhaden ENVIRONMENTAL FACTORS Estuary Bioquímica y Biología Molecular biology.organism_classification Fishery Habitat Benthic zone Salt marsh CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | Fish habitat use is affected by biotic and environmental factors. These factors do not act in isolation; they commonly operate together, and can be modified by the presence of habitat structure, like vegetation. We studied at the Bahia Blanca estuary (38° 52′ S, 62 0°6′ W), the seasonal patterns of fish habitat use in a Spartina alterniflora saltmarsh and a contiguous tidal flat, and related them with biotic and environmental factors. The results showed that all fish species contributed to differences in the structure of fish assemblages between areas. The silverside Odontesthes argentinensis and the menhaden Brevoortia aurea were more abundant and smaller in size in the saltmarsh. In this area, the structure of fish assemblage was positively correlated with the structure of benthic community. The latter, was probably related to the high abundance of the polychaete Laeonereis acuta, the main benthic prey for fishes. Environmental factors that correlated with the structure of fish assemblages were particulate organic matter and sediment penetrability, both in the saltmarsh and in the tidal flat. This evidenced that in terms of physical and chemical factors studied, both areas present similar characteristics for fishes. This work highlights that saltmarshes in southern hemisphere provide both protection and food resources for fishes, and give support to the notion of saltmarshes as important fish habitat worldwide. Fil: Valiñas, Macarena Soledad. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Molina, Lucas Matías. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Addino, Mariana del Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Montemayor, Diana I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Acha, Eduardo Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina Fil: Iribarne, Oscar Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina |
| Databáze: | OpenAIRE |
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