Physico-chemical characterization of the benthic environment of the Golfo San Jorge, Argentina

The benthic system of the Golfo San Jorge was characterized from physico-chemical parameters based on samplings obtained during seasonal research cruises carried out on board the INIDEP vessels from springtime 1999 through wintertime 2000. Spatial and seasonal variations of temperature, salinity, de...

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Bibliographic Details
Published in:Journal of the Marine Biological Association of the United Kingdom 2005-12, Vol.85 (6), p.1317-1328
Main Authors: Fernández, M., Carreto, J.I., Mora, J., Roux, A.
Format: Article
Language:English
Subjects:
Benthic environment
Bottom water
Carbon
Chlorophyll
Coastal oceanography, estuaries. Regional oceanography
Coastal zone
Coasts
Earth, ocean, space
Exact sciences and technology
External geophysics
Marine
Nutritive value
Organic carbon
Organic matter
Physics of the oceans
Research Article
Salinity
Seasonal variations
Sediments
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Summary:The benthic system of the Golfo San Jorge was characterized from physico-chemical parameters based on samplings obtained during seasonal research cruises carried out on board the INIDEP vessels from springtime 1999 through wintertime 2000. Spatial and seasonal variations of temperature, salinity, density, oxygen content and chlorophyll-a in bottom water and concentration of total organic matter, total organic carbon, total nitrogen, chlorophyll-a and phaeopigments in sediments were analysed. The origin and nutritional value of the deposited organic matter were also assessed. The behaviour of the physico-chemical characteristics of the benthic habitat, studied applying statistical techniques, defined three sectors with particular characteristics and minimum seasonal variations: sector 1, the largest and deepest one, comprises the central area of the gulf and corresponds to a depositional environment; sector 2 comprises the areas next to the extremes of the gulf and corresponds to a flow or erosive environment; sector 3 includes the coastal area and south-east part of the gulf and belongs to a transitional environment.
ISSN:0025-3154
1469-7769
DOI:10.1017/S002531540501249X