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Patrón de distribución de peces nectobentónicos del talud continental a lo largo de la costa del Algarve (Portugal)

Authors: Alagador, D. A.; Costa, P. M.;

Patrón de distribución de peces nectobentónicos del talud continental a lo largo de la costa del Algarve (Portugal)

Abstract

Se han caracterizado y comparado la estructura y la diversidad de la ictiofauna nectobentónica de los fondos oceánicos de la costa sur de Portugal a partir de los valores de biomasa -en kg/(milla náutica)²- de diez especies de teleósteos y siete especies de condrictios. Las diferencias de biomasa entre las distintas especies nectobentónicas encontradas fueron determinadas por intervalos de profundidad y épocas de muestreo. Los resultados vienen a demostrar que, incluso por intervalos de profundidad de 100 m, hay diferencias significativas entre las comunidades de peces, y que hay algunas especies que contribuyen en la mayoría de estas diferencias. Sin embargo, no se pudo encontrar ninguna diferencia significativa entre épocas y tampoco entre los años de muestreo. Existe una separación entre los tipos de habitat del talud entre 400-700 m de profundidad y otros situados en zonas más profundas, resultado de un cambio en las comunidades piscícolas.

The present study characterises and compares the structure and diversity of the deep-sea benthopelagic ichthyofauna off the southern Portuguese coast, according to the biomass values -in kg/(nautical mile)²- of ten teleost and seven chondrichthyan species. The differences between the biomass of benthopelagic species were assessed by depth interval and sampling season. It seems clear that even at 100 m depth intervals there are differences within the fish assemblages, and that a few species make most of the contribution to such differences. No traces of seasonality or even differences between the sampling years have been found. There is a separation between slope habitats from 400-700 m depth and deeper ones, determined by a change in fish communities.

Instituto Español de Oceanografía

Country
Spain
Keywords

Portugal, Demersal, Algarve, Medio Marino, ictiofauna

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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