Data/hora: 21/06/2024 06:19:36

Biblioteca(s): | Embrapa Tabuleiros Costeiros.
Data corrente: | 22/01/2015
Data da última atualização: | 22/01/2015
Autoria: | Silva-Filho, E. V.; Kütter, V. T.; Figueiredo, T. S.; Tessier, E.; Rezende, C. E.; Teixeira, D. C.; SILVA, C. A. da; Donard, O. F. X.
Afiliação: | Emmanoel V. Silva-Filho, UFF; Vinicius T. Kütter, UFF; Thiago S. Figueiredo, UFF; Emmanuel Tessier, Université de Pau et des Pays de l' Adour; Carlos E. Rezende, UENF; Daniel C. Teixeira, UFF; CARLOS ALBERTO DA SILVA, CPATC; Olivier F. X. Donard, Université de Pau et des Pays de l' Adour.
Título: | Mercury speciation in plankton from the Cabo Frio Bay, SE - Brazil.
Ano de publicação: | 2014
Fonte/Imprenta: | Environ Monit Assess, 14, August, 2014.
DOI: | 10.1007/s10661-014-3992-2
Idioma: | Inglês
Conteúdo: | Mercury (Hg) is considered a global pollutant, and the scientific community has shown great concern about its toxicity as it may affect the biota of entire systems, through bioaccumulation and bioamplification processes of its organic form, methylmercury (MeHg), along food web. However, few research studies deal with bioaccumulation of Hg from marine primary producers and the first-order consumers. So, this study aims to determine Hg distribution and concentration levels in phytoplankton and zooplankton in the Cabo Frio Bay, Brazil, a site influenced by coastal upwelling. The results from Hg speciation analyses show that inorganic mercury Hg(II) was the predominant specie in plankton from this bay. The annual Hg species distribution in plankton shown mean concentration of 2.00± 1.28 ng Hg(II)g &#8722; 1 and 0.15±0.08 ng MeHg g &#8722; 1 wet weight (phytoplankton) and 2.5±2.03 ng Hg(II)g &#8722; 1 and 0.25±0.09 ng MeHg g &#8722; 1 wet weight (zooplankton). Therefore, upwelling zones should be considered in the Hg biogeochemical cycle models as a process that en- hances Hg(II) bioaccumulation in plankton, raising its bioavailability and shelf deposition.
Thesaurus Nal: | Biogeochemistry; Phytoplankton; Trace elements; Zooplankton.
Categoria do assunto: | --
Registro original: | Embrapa Tabuleiros Costeiros (CPATC)
Exemplares: | CPATC - (23900-1) - UPC - AP - DD - SP4473 -  -  - DIS