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Subtidal macrozoobenthos communities from northern Chile during and post El Niño 1997–1998

Subtidal macrozoobenthos communities from northern Chile during and post El Niño 1997–1998
Subtidal macrozoobenthos communities from northern Chile during and post El Niño 1997–1998
Despite a large amount of climatic and oceanographic information dealing with the recurring climate phenomenon El Niño (EN) and its well known impact on diversity of marine benthic communities, most published data are rather descriptive and consequently our understanding of the underlying mechanisms and processes that drive community structure during EN are still very scarce. In this study, we address two questions on the effects of EN on macrozoobenthic communities: (1) how does EN affect species diversity of the communities in northern Chile? and (2) is EN a phenomenon that restarts community assembling processes by affecting species interactions in northern Chile? To answer these questions, we compared species diversity and co-occurrence patterns of soft-bottoms macrozoobenthos communities from the continental shelf off northern Chile during (March 1998) and after (September 1998) the strong EN event 1997–1998. The methods used varied from species diversity and species co-occurrence analyses to multivariate ordination methods. Our results indicate that EN positively affects diversity of macrozoobenthos communities in the study area, increasing the species richness and diversity and decreasing the species dominance. EN represents a strong disturbance that affects species interactions that rule the species assembling processes in shallow-water, sea-bottom environments.
1438-387X
S45-S55
Moreno, R.A.
5888bd60-6698-4b45-836a-027a09cca3c1
Sepulveda, R.D.
21c343f5-45e4-40af-be56-2676085a7b85
Badano, E.I.
b44cdf66-dec2-44f8-81a9-604ff982e9c6
Thatje, S.
f1011fe3-1048-40c0-97c1-e93b796e6533
Rozbaczylo, N.
f46ac41d-6709-416d-a8c0-803aa453d6dc
Carrasco, F.D.
5d9e36c3-c26f-4fd3-8501-d7df2c661bea
Moreno, R.A.
5888bd60-6698-4b45-836a-027a09cca3c1
Sepulveda, R.D.
21c343f5-45e4-40af-be56-2676085a7b85
Badano, E.I.
b44cdf66-dec2-44f8-81a9-604ff982e9c6
Thatje, S.
f1011fe3-1048-40c0-97c1-e93b796e6533
Rozbaczylo, N.
f46ac41d-6709-416d-a8c0-803aa453d6dc
Carrasco, F.D.
5d9e36c3-c26f-4fd3-8501-d7df2c661bea

Moreno, R.A., Sepulveda, R.D., Badano, E.I., Thatje, S., Rozbaczylo, N. and Carrasco, F.D. (2008) Subtidal macrozoobenthos communities from northern Chile during and post El Niño 1997–1998. Helgoland Marine Research, 62 (Suppl 1), S45-S55. (doi:10.1007/s10152-007-0095-2).

Record type: Article

Abstract

Despite a large amount of climatic and oceanographic information dealing with the recurring climate phenomenon El Niño (EN) and its well known impact on diversity of marine benthic communities, most published data are rather descriptive and consequently our understanding of the underlying mechanisms and processes that drive community structure during EN are still very scarce. In this study, we address two questions on the effects of EN on macrozoobenthic communities: (1) how does EN affect species diversity of the communities in northern Chile? and (2) is EN a phenomenon that restarts community assembling processes by affecting species interactions in northern Chile? To answer these questions, we compared species diversity and co-occurrence patterns of soft-bottoms macrozoobenthos communities from the continental shelf off northern Chile during (March 1998) and after (September 1998) the strong EN event 1997–1998. The methods used varied from species diversity and species co-occurrence analyses to multivariate ordination methods. Our results indicate that EN positively affects diversity of macrozoobenthos communities in the study area, increasing the species richness and diversity and decreasing the species dominance. EN represents a strong disturbance that affects species interactions that rule the species assembling processes in shallow-water, sea-bottom environments.

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Published date: 19 January 2008

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Local EPrints ID: 50401
URI: http://eprints.soton.ac.uk/id/eprint/50401
ISSN: 1438-387X
PURE UUID: df83e689-c45c-48a9-af9c-21d500ac55f5

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Date deposited: 25 Feb 2008
Last modified: 15 Mar 2024 10:06

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Contributors

Author: R.A. Moreno
Author: R.D. Sepulveda
Author: E.I. Badano
Author: S. Thatje
Author: N. Rozbaczylo
Author: F.D. Carrasco

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