Benthic response to upwelling events off the SE Brazilian coast


Autoria(s): Sumida, PYG; Yoshinaga, M. Y.; Ciotti, A. M.; Gaeta, S. A.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/01/2005

Resumo

The main aim of the present study was to evaluate and compare temporal responses of the benthos in 2 continental shelf areas (Cabo Frio and Ubatuba) off the SE Brazilian coast. In Cabo Frio (23 degrees S, 42 degrees W), the western boundary coastal upwelling of the South Atlantic Central Water (SACW) enhances primary productivity, potentially increasing food supply to the benthic communities via sinking of particulate organic carbon (POC). In contrast, POC fluxes in Ubatuba (23 degrees S, 45 degrees W) are expected to be comparatively lower because SACW remains subsurface. We analyzed the temporal and spatial input of phytodetritus (concentration of chlorophyll a in sediments) and the benthic microbial biomass (estimated by ATP-based carbon content in sediments). Median surface chlorophyll concentration was computed for all daily available SeaWiFS images (from 2001 and 2002) to follow chlorophyll a inputs. All parameters used to investigate benthic responses in the study areas showed consistently higher values in Cabo Frio than in Ubatuba. The results showed that benthic response to upwelling may last months, fueling the microbial communities in the Cabo Frio region.

Formato

35-42

Identificador

http://dx.doi.org/10.3354/meps291035

Marine Ecology Progress Series. Oldendorf Luhe: Inter-research, v. 291, p. 35-42, 2005.

0171-8630

http://hdl.handle.net/11449/256

10.3354/meps291035

WOS:000229699400003

WOS000229699400003.pdf

Idioma(s)

eng

Publicador

Inter-research

Relação

Marine Ecology Progress Series

Direitos

closedAccess

Palavras-Chave #benthic-pelagic coupling #benthic microbial response #SE Brazilian continental shelf
Tipo

info:eu-repo/semantics/article