| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea)
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| Autores: |
Strady, Emilie
Harmelin-vivien, Mireille
Chiffoleau, Jean-francois
Veron, Alain
Tronczynski, Jacek
Radakovitch, Olivier
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| Data: |
2015-05
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| Ano: |
2015
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| Palavras-chave: |
Po-210
Pb-210
Phytoplankton
Zooplankton
Pelagic fishes
Mediterranean Sea
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| Resumo: |
The transfer of 210Po and 210Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of 210Po and 210Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on 210Po, 210Pb activity concentrations and 210Po/210Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is connected to local specific pelagic habitats and hydrodynamics. The sampling strategy suggests that 210Po bioaccumulation in the GoL remains at a constant level from the first (dominated by phytoplankton) to the second trophic level (zooplankton), while 210Pb bioaccumulation shows an increase in winter. Based on stable N isotope ratios and 210Po activity concentrations measured in anchovies and sardines, we evidence 210Po bio-magnification along the trophic food web of these two planktivorous pelagic fishes.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00255/36609/35264.pdf
DOI:10.1016/j.jenvrad.2015.02.019
https://archimer.ifremer.fr/doc/00255/36609/
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| Editor: |
Elsevier Sci Ltd
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| Formato: |
application/pdf
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| Fonte: |
Journal Of Environmental Radioactivity (0265-931X) (Elsevier Sci Ltd), 2015-05 , Vol. 143 , P. 141-151
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| Direitos: |
2015 Elsevier Ltd. All rights reserved.
info:eu-repo/semantics/openAccess
restricted use
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