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| Formato: | Artículo científico |
| Lenguaje: | es |
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Universidad de Valparaíso
2011
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=47922575010 |
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| _version_ | 1866585300404273152 |
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| author | Pablo M. Rojas |
| author_facet | Pablo M. Rojas |
| contents | Eggs and larvae of anchoveta Engraulis ringens off northern Chile during the 1997-1998 El Niño event Pablo M. Rojas Mauricio F. Landaeta Raúl Ulloa Ciencias de la Tierra Chile fish larvae zooplankton thermal anomaly coastal upwelling The impact of the El Niño event (1997-1998) on the spatial dynamics as well as on the changes in the aggregation patterns of anchoveta eggs and larvae due to the alteration in the thermal anomalies were analyzed. Six bio-oceanographic surveys were carried out in northern Chile from Arica (18°29¿S,70°19¿W) to Antofagasta (23°38¿S, 70°24¿W) over different periods (before and during) of the 1997-1998 El Niño event. Changes in the vertical distribution and aggregation patterns of anchoveta in early life stages were registered as well as an increase in zooplankton biomass with the arrival of El Niño; moreover, the spatial distribution of anchoveta was altered due to the gradually poleward displacement of spawning areas as a result of the arrival of subtropical warm waters from the north. The increase in zooplankton biomass linked to a change in the species composition suggests a negative impact on the anchoveta larval feeding. Our results suggest that abrupt changes in the environment would have immediate consequences on the spatial distribution of anchoveta in early life stages, causing a potential impact on the recruitment of this small pelagic fish in the Humboldt Current System off northern Chile. 2011 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47922575010 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.3 Vol.46 |
| format | Artículo científico |
| id | redalyc_47922575010 |
| language | es |
| publishDate | 2011 |
| publisher | Universidad de Valparaíso |
| spellingShingle | Eggs and larvae of anchoveta Engraulis ringens off northern Chile during the 1997-1998 El Niño event Pablo M. Rojas Ciencias de la Tierra Chile fish larvae zooplankton thermal anomaly coastal upwelling Eggs and larvae of anchoveta Engraulis ringens off northern Chile during the 1997-1998 El Niño event Pablo M. Rojas Mauricio F. Landaeta Raúl Ulloa Ciencias de la Tierra Chile fish larvae zooplankton thermal anomaly coastal upwelling The impact of the El Niño event (1997-1998) on the spatial dynamics as well as on the changes in the aggregation patterns of anchoveta eggs and larvae due to the alteration in the thermal anomalies were analyzed. Six bio-oceanographic surveys were carried out in northern Chile from Arica (18°29¿S,70°19¿W) to Antofagasta (23°38¿S, 70°24¿W) over different periods (before and during) of the 1997-1998 El Niño event. Changes in the vertical distribution and aggregation patterns of anchoveta in early life stages were registered as well as an increase in zooplankton biomass with the arrival of El Niño; moreover, the spatial distribution of anchoveta was altered due to the gradually poleward displacement of spawning areas as a result of the arrival of subtropical warm waters from the north. The increase in zooplankton biomass linked to a change in the species composition suggests a negative impact on the anchoveta larval feeding. Our results suggest that abrupt changes in the environment would have immediate consequences on the spatial distribution of anchoveta in early life stages, causing a potential impact on the recruitment of this small pelagic fish in the Humboldt Current System off northern Chile. 2011 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47922575010 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.3 Vol.46 |
| title | Eggs and larvae of anchoveta Engraulis ringens off northern Chile during the 1997-1998 El Niño event |
| topic | Ciencias de la Tierra Chile fish larvae zooplankton thermal anomaly coastal upwelling |
| url | https://www.redalyc.org/articulo.oa?id=47922575010 |