Zobrazeno 1 - 10
of 406
pro vyhledávání: '"J. Schönfeld"'
Autor:
J. Schönfeld, N. Glock, I. Polovodova Asteman, A.-S. Roy, M. Warren, J. Weissenbach, J. Wukovits
Publikováno v:
Journal of Micropalaeontology, Vol 42, Pp 171-192 (2023)
Many benthic organisms show aggregated distribution patterns due to the spatial heterogeneity of niches or food availability. In particular, high-abundance patches of benthic foraminifera have been reported that extend from centimetres to metres in d
Externí odkaz:
https://doaj.org/article/45e4796f0a544c1798663e72c361d7fb
Publikováno v:
Biogeosciences, Vol 19, Pp 629-664 (2022)
Heavy metal pollution originating from anthropogenic sources, e.g. mining, industry and extensive land use, is increasing in many parts of the world and influences coastal marine environments even after the source has ceased to pollute. The elevated
Externí odkaz:
https://doaj.org/article/36235ae7a9134503b26c95a09cfb751e
Publikováno v:
Journal of Micropalaeontology, Vol 40, Pp 195-223 (2021)
Living Ammonia species and an inventory of dead assemblages from Adriatic subtidal, nearshore environments were investigated at four stations off Bellaria, Italy. Ammonia falsobeccarii, Ammonia parkinsoniana, Ammonia tepida, and Ammonia veneta were r
Externí odkaz:
https://doaj.org/article/d1b044a53efd4b7ca1a022a461a31486
Publikováno v:
Biogeosciences, Vol 17, Pp 3165-3182 (2020)
Deciphering the dynamics of dissolved oxygen in the mid-depth ocean during the last deglaciation is essential to understand the influence of climate change on modern oxygen minimum zones (OMZs). Many paleo-proxy records from the eastern Pacific Ocean
Externí odkaz:
https://doaj.org/article/4ccb550609f94eefbd52053305c6a03a
Publikováno v:
Journal of Micropalaeontology, Vol 38, Pp 231-247 (2019)
The state of a population of planktic foraminifers at a certain time reflects multiple processes in the upper ocean, including environmental conditions to which the population was exposed during its growth, the age of the cohorts, and spatiotemporal
Externí odkaz:
https://doaj.org/article/6286bb85eb7f49258e2a21cfcbffe8d0
Publikováno v:
Biogeosciences, Vol 15, Pp 7077-7095 (2018)
Past ocean temperatures and salinities can be approximated from combined stable oxygen isotopes (δ18O) and Mg ∕ Ca measurements in fossil foraminiferal tests with varying success. To further refine this approach, we collected living planktic f
Externí odkaz:
https://doaj.org/article/518348b8275c4ebd81f3060b43563c25
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 12, Iss 4, Pp 1169-1189 (2015)
Present day oceans are well ventilated, with the exception of mid-depth oxygen minimum zones (OMZs) under high surface water productivity, regions of sluggish circulation, and restricted marginal basins. In the Mesozoic, however, entire oceanic basin
Externí odkaz:
https://doaj.org/article/3bfb82e12a524312acb61a1f13080657
Publikováno v:
Biogeosciences, Vol 11, Iss 6, Pp 1581-1597 (2014)
Calcifying foraminifera are expected to be endangered by ocean acidification; however, the response of a complete community kept in natural sediment and over multiple generations under controlled laboratory conditions has not been constrained to date
Externí odkaz:
https://doaj.org/article/fc63c9df6e394f6eba1636b066730439
Publikováno v:
Biogeosciences, Vol 10, Iss 7, Pp 4767-4783 (2013)
The discovery that foraminifera are able to use nitrate instead of oxygen as an electron acceptor for respiration has challenged our understanding of nitrogen cycling in the ocean. It was thought before that only prokaryotes and some fungi are able t
Externí odkaz:
https://doaj.org/article/c1fab935b6fd449bbafc9bdb5d29a288