High-resolution records of environmental change in cold-water coral reefs: geochemical evidence recorded in the skeleton of the marine bivalve Acesta excavata
Final Report Abstract
The main aspect of this project, to establish A. excavata as a proxy archive for cold-water coral reefs, could only be fulfilled to a limited extent. Although A. excavata has increments that allow reconstructions in the range of the lunar cycle, the vital effects that influence the important element ratios such as Mg/Ca, Sr/Ca and Na/Ca are very pronounced and not quantifiable, so that a use is only possible to a limited extent. Special attention should be paid to isotopic proxies in future studies on A. excavata, as these are much less influenced by vital effects in bivalves. Special attention should also be paid to impact of bioerosion such as parasitic foraminifera on geochemical proxy carrier (as well as other parasitic carbonate formers). The above study is probably the first geochemical investigation carried out on parasitic foraminifera. Such specialists could provide interesting insights into different calcification mechanisms.
Publications
-
Assessing geochemical seawater temperature proxies in the deep sea bivalve Acesta excavata, Schlerochronolgy 2019, Split Kroatien, 16 – 20.Juni.2019
Schleinkofer N., Raddatz J., Wisshak M., Gerdes A., Fiebig J., Flögel S., Streng S., Wacholz A. & Voigt S.
-
Elemental ratios in Acesta excavata. A potential new tool for paleoenvironmental reconstructions in intermediate water depths, YES Kongress 2019, Berlin Deutschland, 09 – 13.September.2019
Schleinkofer N., Raddatz J., Voigt S., Wisshak M., Gerdes A., Fiebig J., Flögel S., Streng S. & Wachholz A.
-
Environmental and biological controls on Na∕Ca ratios in scleractinian cold-water corals. Biogeosciences, 16(18), 3565-3582.
Schleinkofer, Nicolai; Raddatz, Jacek; Freiwald, André; Evans, David; Beuck, Lydia; Rüggeberg, Andres & Liebetrau, Volker
-
Ba/Ca, P/Ca, Li/Ca and Mn/Ca ratios in the deep-sea bivalve Acesta excavata: Valuable tools to reconstruct plankton dynamics in cold-water coral ecosystems?. Copernicus GmbH.
Schleinkofer, Nicolai; Raddatz, Jacek; Evans, David; Gerdes, Axel; Voigt, Silke & Wisshak, Max
-
Boron isotopes and B/Ca ratios in the parasitic foraminifera Hyrrokkin sarcophaga - controlled through internal pH-regulation of the host?, Goldschmidt 2021 Boron Isotope Short Course, Online, 01.Juni.2021
Schleinkofer N., Evans D., Wisshak M., Büscher J.V., Freiwald A., Voigt S. & Raddatz J.
-
Compositional variability of Mg/Ca, Sr/Ca, and Na/Ca in the deep-sea bivalve Acesta excavata (Fabricius, 1779). PLOS ONE, 16(4), e0245605.
Schleinkofer, Nicolai; Raddatz, Jacek; Evans, David; Gerdes, Axel; Flögel, Sascha; Voigt, Silke; Büscher, Janina Vanessa & Wisshak, Max
-
Host influenced geochemical signature in the parasitic foraminifer Hyrrokkin sarcophaga. Copernicus GmbH.
Schleinkofer, Nicolai; Evans, David; Wisshak, Max; Büscher, Janina Vanessa; Fiebig, Jens; Freiwald, André; Härter, Sven; Marschall, Horst R.; Voigt, Silke & Raddatz, Jacek
-
Is the geochmical signature of parasitic foraminifera influenced by the host organism?, FIERCE Isotope Short course, Online, 09 – 12.März.2021
Schleinkofer N., Evans D., Wisshak M., Büscher J.V., Fiebig J., Freiwald A., Härter S., Marschall H.R., Voigt S. & Raddatz J.
