Comment on ‘‘Stable carbon isotopes in freshwater mussel shells: Environmental record or marker for metabolic activity?’’ by J. Geist et al. (2005)
نویسندگان
چکیده
a Institute for Geology and Paleontology, INCREMENTS Research Group, University of Frankfurt, Senckenberganlage 32, 60325 Frankfurt a. M., Germany b Department of Geological Sciences, University of North Carolina, CB #3315, 225 Mitchell Hall, Chapel Hill, NC 27599, USA c Department of Geological Sciences, The State University of New York at New Paltz, 75 South Manheim Boulevard, New Paltz, NY 12561, USA
منابع مشابه
Geochemistry of Marine Bivalve Shells: the potential for paleoenvironmental reconstruction
1 General Introduction 3 1. Bivalves as environmental proxies: An introduction. 5 2. Materials and Methods: Procedures, equipment, precision and accuracy. 31 3. Validation of LA-ICP-MS results with micromilling and SN-HR-ICP-MS. 59 4. Stable carbon and oxygen isotopes in an aragonitic bivalve (Saxidomus giganteus): assessing the reproducibility and reliability for environmental reconstruction. ...
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[1] Incorporation of isotopically light metabolic carbon (CM) can obscure carbon isotope records of dissolved inorganic carbon from biogenic carbonates. Ontogenic increases of CM are common in marine bivalved mollusks, likely reflecting increasing absolute metabolism with increasing body size. Here we use shell aragonite from four specimens of Pyganodon cataracta to test if the same is true in ...
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The anthropogenic input of fossil fuel carbon into the atmosphere results in increased carbon dioxide (CO(2)) into the oceans, a process that lowers seawater pH, decreases alkalinity and can inhibit the production of shell material. Corrosive water has recently been documented in the northeast Pacific, along with a rapid decline in seawater pH over the past decade. A lack of instrumentation pri...
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