Variation des bio-volumes des zooplancton du plateau continental entre le Cap des Palmes et le Cap des Trois Pointes

Binet, D. (1972) Variation des bio-volumes des zooplancton du plateau continental entre le Cap des Palmes et le Cap des Trois Pointes. Documents Scientifiques, Centre de Recherches Océanographiques, Abidjan, 3(2), pp. 60-93.

[img]
Preview
PDF (The document's language is French .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (1694Kb) | Preview

Abstract

Three years of weekly sampling from a coastal station and 29 monthly cruises over the whole continental shelf were studied for zooplankton quantitative variation. Settled volumes were preferred to displacement volumes. At the coastal station, near Abidjan, a negative correlation was found between the log2 of zooplankton volume and the preceding fortnight temperature. On the whole shelf, the differences between the 6 considered areas were tested by the variance analysis. There were significative differences in shallow waters only (20 m). During the main cold season, the upwelling of Tabou causes a very important enrichment 30 to 60 nautical miles to the east. Eastwards the plankton drifts and decreases in abundance. The zooplankton maximum is not always inshore, but often in the middle of the shelf and sometimes over the slope. During the little cold season the enrichments caused by coastal upwelling are less abundant and restricted to smaller areas. During the warm season, the waters are uniformly poor. During the cold season, over the 60m depths, the zooplankton maximum lies between 10 and 20 m and seems to sink in deeper waters. In warm season the vertical repartition is rather homogeneous in the first 40 meters. The diel vertical migrations show a very consistent rhythm, varying with the season.

Item Type: Article
Title: Variation des bio-volumes des zooplancton du plateau continental entre le Cap des Palmes et le Cap des Trois Pointes
Personal Creator/Author:
CreatorsEmail
Binet, D.
Journal or Publication Title: Documents Scientifiques, Centre de Recherches Océanographiques, Abidjan
Volume: 3
Number: 2
Page Range: pp. 60-93
Date: August 1972
Issuing Agency: Centre de Recherches Océanographiques, Côte d'Ivoire
Uncontrolled Keywords: Côte d'Ivoire; Ivorian continental shelf; seasonal variations; zooplankton; diel vertical migration; upwelling
Subjects: Biology
Ecology
Oceanography
Item ID: 8023
Depositing User: Ms Maria Kalentsits
Date Deposited: 09 Mar 2012 09:09
Last Modified: 09 Mar 2012 09:09
URI: http://aquaticcommons.org/id/eprint/8023

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...