期刊
PROGRESS IN OCEANOGRAPHY
卷 164, 期 -, 页码 52-62出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pocean.2018.04.012
关键词
Biogeochemical fronts; Shelf system; South Brazil Bight; Southwest Atlantic Ocean
类别
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) of the Brazilian Ministry of Education
Here we described the general hydrography in the South Brazil Bight (23-28 degrees S) with emphasis on frontal processes and their role in the structure and functioning of the regional shelf ecosystem. One of the key roles of fronts for ecosystem dynamics is the injection of nutrients into the euphotic zone increasing primary production. Frontal systems also affect plankton biodiversity and fisheries. Physical mechanisms behind frontogenesis in this region are similar in the analogous western side of oceanic basins; their magnitude and seasonal dynamics, however, may differ due to peculiarities in shelf morphology, wind field, tidal circulation and continental drainage. Here we provide a reassessment of earlier and recent ecological and hydrographic studies for a better evaluation of the spatial and temporal dynamics of fronts and their regional ecological implications. Albeit in a fragmented manner, we give a more detailed conceptual framework about the ecosystem responses to the complex frontal system in the South Brazil Bight.
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