%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Chifflet, Sandrine
%A Briant, N.
%A Freydier, R.
%A Araujo, D. F.
%A Quéméneur, Marianne
%A Zouch, H.
%A Bellaaj-Zouari, A.
%A Carlotti, F.
%A Tedetti, Marc
%T Isotopic compositions of copper and zinc in plankton from the Mediterranean Sea (MERITE-HIPPOCAMPE campaign): Tracing trophic transfer and geogenic inputs
%D 2022
%L fdi:010086710
%G ENG
%J Marine Pollution Bulletin
%@ 0025-326X
%K Mediterranean Sea ; Planktonic food webs ; Cu and Zn isotopes ; Geogenic inputs
%K MEDITERRANEE ; FRANCE ; TUNISIE
%M ISI:000892144600002
%N A
%P 114315 [11 ]
%R 10.1016/j.marpolbul.2022.114315
%U https://www.documentation.ird.fr/hor/fdi:010086710
%> https://www.documentation.ird.fr/intranet/publi/2023-01/010086710.pdf
%V 185
%W Horizon (IRD)
%X This study uses Cu and Zn isotopic compositions as proxies of sources and metal transfers in the planktonic food webs from the Mediterranean Sea. Plankton was collected in spring 2019 in the deep chlorophyll maximum (DCM) along a North-South transect including coastal and offshore zones (MERITE-HIPPOCAMPE campaign). 865Cu and 866Zn were determined on four planktonic size fractions from 60 to 2000 mu m. Combined 865Cu and 866Zn with geochemical tracers (Ti, particulate organic phosphorus) showed that geogenic particles were ubiquitous with plankton assemblages. The 815N ecological tracer showed that planktonic food web was enriched in heavy isotopes of Cu and Zn in the higher trophic levels. 865Cu were correlated with picoplankton in the offshore zone, and with zooplankton in the southern coastal zone. Firmicutes bacteria were found correlated with 866Zn in northern and southern coastal zones suggesting decomposition of particulate matter at the DCM. These findings suggest that biogeochemical process may impact Cu and Zn isotopy in the planktonic community.
%$ 034 ; 038