Effects of "El Niño 1997-98" phenomenon on main pelagic resources in Peruvian coast

Authors

  • Miguel Ñiquen Instituto del Mar del Perú (IMARPE). Callao-Perú
  • Marilú Bouchon Instituto del Mar del Perú (IMARPE). Callao-Perú
  • Sandra Cahuin Instituto del Mar del Perú (IMARPE). Callao-Perú
  • José Valdez Instituto del Mar del Perú (IMARPE). Callao-Perú

DOI:

https://doi.org/10.15381/rpb.v6i3.8434

Keywords:

Pelagic resources, El Niño, Peruvian coast, population, fishery

Abstract

Five evaluation cruises for pelagic resources were performed between April1997 and September 1998 on Peruvian coast, these allowed to observe changes in composition by species, distribution, size structure, reproduction, and population levels. These changes are similar to those observed in both El Niño 1972-73 and 1982-83, especially with respect to anchovy biomass decrease and increase of other pelagic species. Considerable changes in anchovy size structure in post-Niño period were observed, while sardine, samasa and Pacific mackerel showed good recruitment. Also the reproductive activity was increased, even in juveniles, with outstanding proliferation of sexual mature sardine with 18-20 cm length, this situation has not been recorded before.

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Published

12/31/1999

Issue

Vol. 6 No. 3 (1999)

Section

Articles

License

Copyright (c) 1999 Miguel Ñiquen, Marilú Bouchon, Sandra Cahuin, José Valdez

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista Peruana de Biologia.

c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating its initial publication in the Revista Peruana de Biologia (the originator of the work, journal, volume, number and date).

How to Cite

Ñiquen, Miguel, Marilú Bouchon, Sandra Cahuin, and José Valdez. 1999. “Effects of ‘El Niño 1997-98’ Phenomenon on Main Pelagic Resources in Peruvian Coast”. Revista Peruana De Biología 6 (3): 085-096. https://doi.org/10.15381/rpb.v6i3.8434.