Planktic foraminiferal diversity: logistic growth overprinted by a varying environment
نویسندگان
چکیده
منابع مشابه
Global prediction of planktic foraminiferal fluxes
Global prediction of planktic foraminiferal fluxes from hydrographic and productivity data S. Žarić, M. Schulz, and S. Mulitza DFG Research Center Ocean Margins, University of Bremen, P. O. Box 330440, 28334 Bremen, Germany Received: 13 June 2005 – Accepted: 27 June 2005 – Published: 22 July 2005 Correspondence to: S. Žarić ([email protected]) © 2005 Author(s). This work is licensed under a C...
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Understanding and quantifying the seasonal and spatial distribution of planktic foraminiferal fluxes reflected in sedimentary assemblages is key to interpret foraminiferabased proxies in paleoceanography. Towards this goal we present an empirical model to predict foraminiferal fluxes on a global scale. A compilation of planktic foraminiferal flux and export production data from globally distrib...
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About one third of the anthropogenic carbon dioxide (CO2) released into the atmosphere in the past two centuries has been taken up by the ocean. As CO2 invades the surface ocean, carbonate ion concentrations and pH are lowered. Laboratory studies indicate that this reduces the calcification rates of marine calcifying organisms, including planktic foraminifera. Such a reduction in calcification ...
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[1] In recent years it has become apparent that the ‘‘cool tropic paradox’’ of Paleogene and Cretaceous ‘‘greenhouse’’ climates arises because of the diagenetic alteration of tropical planktic foraminiferal calcite near the seafloor, yielding artificially high dO values. Because the Mg/Ca compositions of foraminiferal and inorganic calcite are thought to be quite different, Mg/Ca measurements s...
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ژورنال
عنوان ژورنال: Acta Biológica Colombiana
سال: 2016
ISSN: 1900-1649,0120-548X
DOI: 10.15446/abc.v21n3.54218