The El Niño event and its influence on the zooplankton off Peru
Abstract
The Zooplankton groups in general, and the copepoda group in particular, were determined and quantified. Changes were observed in their latitudinal distribution in the area between 6°00′ and 12°38'S and up to 270 n. mi (513 km) off the coast during January and February 1983. The biomass fluctuated between 3 and 18 mL m−2, where the highest values are given by organisms typical of subtropical surface waters such as giltheads, appendicularians, and oceanic copepods. Because of the tropicalizing effect of the study area, a density decrease of larval stages of Zooplankton typical for the area was observed, while prawn larval stages, unusual for the area, were found. Furthermore, there is a significant increase of carnivorous and omnivorous genera of the Copepoda group, such as Centropages, Candacia, Euchaeta, and Labidocera, all identified as predators of anchovy and sardine larvae.
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Little is known about how large-scale ENSO events influence plankton production and variability in the eastern equatorial Pacific.
“Little is known about how these large-scale events influence plankton production and variability in the eastern equatorial Pacific, despite the recognized importance of planktonic organisms as indicator species of these changes (Carrasco and Santander, 1987;Jiménez, 2000).”
From Epipelagic copepod distributions in the eastern equatorial Pacific during the weak La Niña event of 2001 (2011) · cites this paper as Carrasco and Santander, 1987
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Tutasi, P., Palma, S., & Cáceres, M. (2011) · Scientia Marina · doi:10.3989/scimar.2011.75n4791 · Cited by 6 · see citing works
“ISSN 0214-8358 doi: 10.3989/scimar.2011.75n4791 influence plankton production and variability in the eastern equatorial Pacific, despite the recognized importance of planktonic organisms as indicator species of these changes (Carrasco and Santander, 1987; Jiménez, 2000).”
BackgroundInfluential
- Authors
- Carrasco, S., & Santander, H.
- Venue
- Journal of Geophysical Research: Oceans
- Publisher
- American Geophysical Union (AGU)
- Published
- 1987-12-15
- Volume
- 92
- Issue
- C13
- Pages
- 14405-14410
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W2059783811
- Cited by
- 31
- References
- 0
- Citations by year
- 2025: 1 · 2024: 2 · 2022: 1 · 2019: 1 · 2018: 2 · 2015: 2 · 2014: 2
- FWCI
- 0.44
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Geophysical Research Atmospheres (publishedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
- Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Biology and Ecology Research
- Keywords
- El Niño, zooplankton, copepods, zooplankton biomass, latitudinal distribution, prawn larvae, Centropages, Labidocera, anchovy larvae, sardine larvae, predator-prey interactions, tropicalization, Peruvian coast
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