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- W32139740 abstract "This paper discusses the first results obtained from a quantitative microprobe analysis (SEM) of the chemical composition of ostracod valves living in limnic and lagoonal environments. Enrichment of certain trace elements such as P, Fe, and Mn in the carapace generally occurs in eutrophic environments where autochtonous organic sedimentation thrives. High Al and Si values have been detected in an environment supplied mainly by allochtonous organic matter of terrigenous origin. We have tried in this study to determine the extent of hazardeous distribution of certain chemical elements in carapaces or ornamentation. Mg contents, for instance, mostly located in the inner part of the carapace (Cadot et al. , 1972) have been found within the reticulated crests of Cyprideis torosa in all kinds of environments. Furthermore, the nodes of Cytherissa lacustris, Limnocythere sancii patricii and Sclerocypris clavularis proved to contain more amounts of silica than in the rest of the valve. It may, therefore, be assumed that: —the overall chemical composition of valves is an indicator of the trophic quality of the environment (local or allochtonous organic matter); —the “choice” of certain chemical elements to concentrate or locate in sites of particular structure (nodes) and ornamentation intensity (aggradation or degradation) reflect the concentration of these elements in the water, at water/sediment interface during moulting." @default.
- W32139740 created "2016-06-24" @default.
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- W32139740 date "1988-01-01" @default.
- W32139740 modified "2023-09-23" @default.
- W32139740 title "The Ostracod Carapace as a Hydrochemical Source of Information at Water/Sediment Interface" @default.
- W32139740 cites W2148760922 @default.
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- W32139740 doi "https://doi.org/10.1016/s0920-5446(08)70193-6" @default.
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