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New contribution on spatial and seasonal variability of environmental conditions of the Golfo San Jorge benthic system, Argentina

Published online by Cambridge University Press:  25 March 2008

Mónica Fernández ,
José Mora ,
Ana Roux ,
Daniel A. Cucchi Colleoni  and
Juan C. Gasparoni
Mónica Fernández*
Affiliation:
INIDEP, Paseo Victoria Ocampol, Mar del plata B7602HSA, Argentina
José Mora
Affiliation:
INIDEP, Paseo Victoria Ocampol, Mar del plata B7602HSA, Argentina
Ana Roux
Affiliation:
INIDEP, Paseo Victoria Ocampol, Mar del plata B7602HSA, Argentina
Daniel A. Cucchi Colleoni
Affiliation:
INIDEP, Paseo Victoria Ocampol, Mar del plata B7602HSA, Argentina
Juan C. Gasparoni
Affiliation:
INIDEP, Paseo Victoria Ocampol, Mar del plata B7602HSA, Argentina
*
Correspondence should be addressed to: Mónica Fernández INIDEP, Paseo Victoria Ocampol, Mardel Plata B76024SA, Argentina email: [email protected]
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Abstract

A new contribution on spatial and seasonal variability of physico-chemical parameters of the Golfo San Jorge benthic system from autumn 2001 through summer to 2002 is presented. Temperature, salinity, density, oxygen content and chlorophyll-a in bottom water as well as concentration of total organic matter, total organic carbon, total nitrogen, total phosphorus, chlorophyll-a and phaeopigments in sediments were analysed. The origin and nutritional value of the deposited organic matter were also assessed. The results reflect the existence of: (1) a typical temperate water seasonal cycle; (2) a bimodal cycle in the phytoplanktonic production; and (3) seasonal variations in the chemical variables and in organic matter origin in sediments.

Three sectors which geographically correspond with those identified in previous studies were defined: (1) the inner area of the gulf; (2) the areas next to the north and south extremes; and (3) the coastal and south-east part.

Keywords

Physico-chemical parametersPatagonian Gulfsouth-westernSouth Atlantic
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 88 , Issue 2 , March 2008 , pp. 227 - 236
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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