Fauna composition of benthos communities in bottom sediments from the edge and the central part of the shelf in the California upwelling zone

Two shelf communities from the central part off the California Peninsula are described. The community of Amphiodia urtica - Nephtys ferruginea develops in the central part of the shelf within the depth range 95-105 m. The community of Nephtys ferruginea - Amphiura acrystata develops on the shelf edge at depth 110 m. Biomasses of both communities are very low (about 10 g/m**2). Species richness of the shelf community is high; more than 60 species occur in samples (43-51 species per a community). Various echinoderms and some other groups are abundant on the Californian shelf; these groups are absent in shelf areas of Peruvian and Benguela upwellings. Species structures of the communities were analyzed; the communities were shown to consist of coexisting, but not interacting guilds; this indicates that the communities are undersaturated with individuals. At the same time values of ABC-indices indicate that the communities are stable. We suggest that in this case adaptation to unfavorable but stable environment is observed (selection of species-stressolarents). An explanation seems to lie in the penetrating type of the upwelling in the Californian upwelling zone. Low biomass values seem to result from mass development of necto-benthic carnivorous crustaceans-galateids Pleuroncodes planiceps.

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Cite this as

Kucheruk, Nikita V (1999). Dataset: Fauna composition of benthos communities in bottom sediments from the edge and the central part of the shelf in the California upwelling zone. https://doi.org/10.1594/PANGAEA.761112

DOI retrieved: 1999

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.761112
Author Kucheruk, Nikita V
Given Name Nikita V
Family Name Kucheruk
Source Creation 1999
Publication Year 1999
Resource Type application/zip - filename: Kucheruk-1999
Subject Areas
Name: Oceans

Related Identifiers
Title: Sublittoral bottom fauna of the Californian upwelling zone
Type: DOI
Relation: IsSupplementTo
Year: 1999
Source: Translated from Okeanologiya, 1999, 39(1), 98-104
Authors: Kucheruk Nikita V .