Zobrazeno 1 - 10
of 219
pro vyhledávání: '"J. de Nooijer"'
Autor:
A. E. Webb, D. M. de Bakker, K. Soetaert, T. da Costa, S. M. A. C. van Heuven, F. C. van Duyl, G.-J. Reichart, L. J. de Nooijer
Publikováno v:
Biogeosciences, Vol 18, Pp 6501-6516 (2021)
Coral reefs are declining worldwide. The abundance of corals has decreased alongside a rise of filter feeders, turf, and algae in response to intensifying human pressures. This shift in prevalence of functional groups alters the biogeochemical proces
Externí odkaz:
https://doaj.org/article/6c329da79408449787e25d5edb5386ea
Publikováno v:
Biogeosciences, Vol 18, Pp 393-401 (2021)
Marine calcification is an important component of the global carbon cycle. The mechanism by which some organisms take up inorganic carbon for the production of their shells or skeletons, however, remains only partly known. Although foraminifera are r
Externí odkaz:
https://doaj.org/article/a6b30453435046d8a0e4e409be31d57f
Publikováno v:
Biogeosciences, Vol 16, Pp 2115-2130 (2019)
Shell chemistry of foraminiferal carbonate proves to be useful in reconstructing past ocean conditions. A new addition to the proxy toolbox is the ratio of sulfur (S) to calcium (Ca) in foraminiferal shells, reflecting the ratio of SO42- to CO32- in
Externí odkaz:
https://doaj.org/article/577945ff094a448e8379dd31a0b55d1c
Publikováno v:
Biogeosciences, Vol 16, Pp 1147-1165 (2019)
Sea surface salinity is one of the most important parameters to reconstruct in paleoclimatology, reflecting amongst other things the hydrological cycle, paleodensity, ice volume, and regional and global circulation of water masses. Recent culture stu
Externí odkaz:
https://doaj.org/article/55aaa55d3d0b48bf85172ee2d5c0bfd4
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
Element concentrations of calcite precipitated by foraminifera reflect chemical and physical properties of seawater and can therefore be used to reconstruct (paleo-)environmental conditions. Foraminiferal carbonate associated manganese incorporation
Externí odkaz:
https://doaj.org/article/3b7c3f97b222445b9de63bd5b3c36f9c
Autor:
J. Bertlich, D. Nürnberg, E. C. Hathorne, L. J. de Nooijer, E. M. Mezger, M. Kienast, S. Nordhausen, G.-J. Reichart, J. Schönfeld, J. Bijma
Publikováno v:
Biogeosciences, Vol 15, Pp 5991-6018 (2018)
The quantitative reconstruction of past seawater salinity has yet to be achieved, and the search for a direct and independent salinity proxy is ongoing. Recent culture and field studies show a significant positive correlation of Na∕Ca with salin
Externí odkaz:
https://doaj.org/article/d5a6ae73bc7a4395bac226f271c14db6
Publikováno v:
Biogeosciences, Vol 15, Pp 2205-2218 (2018)
Accurate reconstructions of seawater salinity could provide valuable constraints for studying past ocean circulation, the hydrological cycle and sea level change. Controlled growth experiments and field studies have shown the potential of foramini
Externí odkaz:
https://doaj.org/article/377841e03cae4f43a92a64367b206c74
Autor:
J. Petersen, C. Barras, A. Bézos, C. La, L. J. de Nooijer, F. J. R. Meysman, A. Mouret, C. P. Slomp, F. J. Jorissen
Publikováno v:
Biogeosciences, Vol 15, Pp 331-348 (2018)
The adaptation of some benthic foraminiferal species to low-oxygen conditions provides the prospect of using the chemical composition of their tests as proxies for bottom water oxygenation. Manganese may be particularly suitable as such a geochemi
Externí odkaz:
https://doaj.org/article/c3528963b54a4c179597fb2c5d9f11f7
Publikováno v:
Biogeosciences, Vol 14, Pp 3387-3400 (2017)
Barium (Ba) incorporated in the calcite of many foraminiferal species is proportional to the concentration of Ba in seawater. Since the open ocean concentration of Ba closely follows seawater alkalinity, foraminiferal Ba ∕ Ca can be used to reco
Externí odkaz:
https://doaj.org/article/aca95cd5cc4e4a7a895532bb0d0f3f3e
Autor:
K. A. Koho, L. J. de Nooijer, C. Fontanier, T. Toyofuku, K. Oguri, H. Kitazato, G.-J. Reichart
Publikováno v:
Biogeosciences, Vol 14, Pp 3067-3082 (2017)
The Mn / Ca of calcium carbonate tests of living (rose-Bengal-stained) benthic foraminifera (Elphidium batialis, Uvigerina spp., Bolivina spissa, Nonionellina labradorica and Chilostomellina fimbriata) were determined in relation to pore water man
Externí odkaz:
https://doaj.org/article/31e3c05b41a2425fa21811571a2cd722