Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997−1998
2011; Inter-Research; Volume: 455; Linguagem: Inglês
10.3354/meps09571
ISSN1616-1599
AutoresRebeca Gasca, Carmen Franco-Gordo, Enrique Godínez-Domínguez, Eduardo Suárez‐Morales,
Tópico(s)Marine Toxins and Detection Methods
ResumoMEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 455:123-139 (2012) - DOI: https://doi.org/10.3354/meps09571 Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997−1998 Rebeca Gasca1,*, Carmen Franco-Gordo2, Enrique Godínez-Domínguez2, Eduardo Suárez-Morales1 1El Colegio de la Frontera Sur (ECOSUR), Apdo. Postal 424, Chetumal, Q. Roo 77014, Mexico 2Centro Universitario de la Costa Sur (CUCSUR), Universidad de Guadalajara, San Patricio Melaque, Jalisco 48980, Mexico *Email: rgasca@ecosur.mx ABSTRACT: 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 Hyperioides sibaginis and Lestrigonus 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 (<34.5 psu). H. sibaginis and L. bengalensis were dominant, particularly in the aftermath of EN (after June 1998). The influence of the Equatorial water during EN favored a greater abundance of warm-water hyperiid families and a greater evenness, particularly during 1998. During EN, higher hyperiid abundance and diversity but also a 30% increase of species richness and a greater abundance of the dominant species were observed. After the end of EN and for the rest of the sampling period, the oceanographic conditions returned to normality in the area, but the hyperiid community still showed relatively low diversity and high abundance values. KEY WORDS: Zooplankton ecology · Pelagic crustaceans · Diversity Full text in pdf format PreviousNextCite this article as: Gasca R, Franco-Gordo C, Godínez-Domínguez E, Suárez-Morales E (2012) Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997−1998. Mar Ecol Prog Ser 455:123-139. https://doi.org/10.3354/meps09571 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 455. Online publication date: May 30, 2012 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2012 Inter-Research.
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