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Calculation of coccolith volume and its use in calibration of carbonate flux estimates
Abstract Estimates of coccolith volume help in determining total coccolith carbonate fluxes and the relative contributions of various coccolith species. It is argued here that the best approach toExpand
Calcareous nannoplankton evolution and diversity through time
Planktic microfossils arguably provide the most complete (stratigraphic and taxonomic) record of biodiversity of any group of organisms. The phytoplankton record is of particular significance as itExpand
Species-specific responses of calcifying algae to changing seawater carbonate chemistry
Uptake of half of the fossil fuel CO2 into the ocean causes gradual seawater acidification. This has been shown to slow down calcification of major calcifying groups, such as corals, foraminifera,Expand
Pseudo-cryptic speciation in coccolithophores
Research on five commonly occurring coccolithophores supports the hypothesis that such variation represents pseudocryptic speciation events, occurring between 0.3 and 12.9 million years ago from a molecular clock estimation, and suggests strong stabilizing selection acting on cocColithophorid phenotypes. Expand
Biogeography of selected Holocene coccoliths in the Atlantic Ocean
In this chapter we present a revision of the biogeographical distribution of five coccolithophorid species (Coccolithus pelagicus, Calcidiscus leptoporus, Heli-cosphaera carteri, SyracosphaeraExpand
Genotypic variation in the coccolithophorid speciesEmiliania huxleyi
Culture strains ofEmiliania huxleyi have been used for a case-study of intra-specific variation in coccolith morphology and it is suggested that the strain types represent two of a limited number of varieties within the global population. Expand
Global correlation of Cenomanian (Upper Cretaceous) sequences: Evidence for Milankovitch control on sea level
We have investigated the sequence stratigraphy of two widely separated marine Cenomanian successions in southeast India and northwest Europe, and used high-resolution ammonite biostratigraphy toExpand
A model system approach to biological climate forcing : The example of Emiliania huxleyi
Abstract Particulate inorganic carbon (calcium carbonate mineral) is produced by pelagic calcifying organisms in the upper layers of the open ocean, it sinks to the deep sea, is partly dissolved andExpand
Life-cycle associations involving pairs of holococcolithophorid species: intraspecific variation or cryptic speciation?
It is inferred that cryptic speciation may be widespread in heterococcolithophorid phases and that study of holococcolithsophorids phases can provide key data to elucidate this phenomenon. Expand