Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997−1998

To evaluate the hyperiid community’s response to the influence of oceanographic conditions related to ‘El Niño’ (EN) in the Mexican Tropical Pacific area, zooplankton samples collected over 27 mo between December 1995 and December 1998 were analyzed. The most abundant of the 80 species recorded were...

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Bibliographic Details
Published in:Marine ecology. Progress series (Halstenbek) 2012-05, Vol.455, p.123-139
Main Authors: Gasca, Rebeca, Franco-Gordo, Carmen, Godínez-Domínguez, Enrique, Suárez-Morales, Eduardo
Format: Article
Language:English
Subjects:
Animal communities
Aquatic communities
Coasts
Hyperioides
Lestrigonus bengalensis
Marine
Ocean currents
Oceans
Sea water
Species
Species diversity
Surface water
Zooplankton
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Summary:To evaluate the hyperiid community’s response to the influence of oceanographic conditions related to ‘El Niño’ (EN) in the Mexican Tropical Pacific area, zooplankton samples collected over 27 mo between December 1995 and December 1998 were analyzed. The most abundant of the 80 species recorded wereHyperioides sibaginisandLestrigonus bengalensis. Two different climatic yearly periods were revealed, including one from February to June, related to the strongest flow of the California Current (CC), with cooler (34.5 psu) waters. In this period, hyperiids were more species-rich and diverse, with greater evenness, but had lower abundances. From July to December, the North Equatorial Countercurrent (NECC) was predominant, with warmer waters (>25°C) and lower salinity (
ISSN:0171-8630
1616-1599
DOI:10.3354/meps09571