INVESTIGADORES
ARIAS Andres Hugo
congresos y reuniones científicas
Título:
30 years of oceanographic monitoring at the south Atlantic: Highlights of climate change
Autor/es:
ARIAS, A.H.; SPETTER, C.V.; FREIJE, R.H.; MARCOVECCHIO, J.H.
Lugar:
Yeosu
Reunión:
Simposio; Second Symposium on ?Effects of Climate Change on the World?s Oceans?; 2012
Institución organizadora:
North Pacific Marine Science Organization
Resumen:
30 years of oceanographic monitoring at the south Atlantic: Highlights of climate change Andrés H. Arias, Carla V. Spetter, Rubén H. Freije and Jorge E. Marcovecchio Argentinean Institute of Oceanography, Florida 8000 (Camino La Carrindanga km 7,5) Complejo CRIBABB.E1 Building, Bahia Blanca, Buenos Aires, 8000, Argentina. E-mail: aharias@iado-conicet.gov.ar Both climate change and anthropogenic impact are creating a dynamic of continuous changes in ecosystems. While the expected consequences of these changes are global, the occurrence of extreme events and specific environmental problems are usually local or regional phenomenona. In particular, the coastal ecosystems are among the first vulnerable areas to show those changes; in spite of this, coastal ecosystems are among the least studied. The Bahia Blanca estuary, Argentina, is located at on the South Atlantic at 38° 40′ S and 62° 09′ W and includes an area of 2300 km2, with long extensions of intertidal marshes and islands. Along the northern shore of the estuary it is found the most important deep-water harbor of the country, wherefrom which most of the nation?s agricultural and industrial products are exported. OIn the same shoreline it is located the principal Navy harbor of the country. At least at two monitoring points ofin this area, it has been performing have had continuous fortnightly a full oceanographic monitoring since 1974, in a fortnightly basis. Based on this multi decadal oceanographic monitoring and meteorological data of the area, a co-relational analysis approach was outlined used to considering several documentedtrophivtropic level changes at various trophic levels; namelyin, phytoplankton and zooplankton assemblages, commercial crustaceans and fisheries. As The results, suggest several novel emerging hypotheses regarding cause-and-effect relationships were formulated. As an overall conclusion, these findings strengthen the theory of climate driven changes at marine coastal ecosystems and set establish the need of further studies.