Results 71 to 80 of about 131,389 (234)

Coccolithophore biodiversity controls carbonate export in the Southern Ocean [PDF]

, 2020
Southern Ocean waters are projected to undergo profound changes in their physical and chemical properties in the coming decades. Coccolithophore blooms in the Southern Ocean are thought to account for a major fraction of the global marine calcium ...
Abrantes, Fatima, Ballegeer, Anne-Marie, Bostock, Helen, Davies, Diana M., Eriksen, Ruth S., Flores, José A., Fuertes, Miguel A., Nodder, Scott D., Northcote, Lisa C., Rigual Hernández, Andrés S., Sierro, Francisco J., Trull, Thomas W.   +11 more
core   +3 more sources

Palaeoenvironmental, palaeoecological and palaeobiogeographical implications of mixed fresh water and brackish marine assemblages from the Cretaceous-Palaeogene Deccan intertrappean beds at Jhilmili, Chhindwara District, central India

Revista Mexicana de Ciencias Geológicas, 2018
The Deccan infra- and intertrappeans volcano-sedimentary sequences have been considered as terrestrial to fluvio-lacustrine deposits. Presence of planktonic foraminifera and brackish water ostracods in the Jhilmili basal Danian intertrappean beds ...
Ashu Khosla
doaj   +1 more source

Projected impacts of climate change and ocean acidification on the global biogeography of planktonic Foraminifera [PDF]

Biogeosciences, 2015
Planktonic Foraminifera are a major contributor to the deep carbonate flux and their microfossil deposits form one of the richest databases for reconstructing paleoenvironments, particularly through changes in their taxonomic and shell composition. Using
T. Roy, F. Lombard, L. Bopp, M. Gehlen
doaj   +1 more source

Modeling seasonal and vertical habitats of planktonic foraminifera on a global scale

Biogeosciences, 2017
. Species of planktonic foraminifera exhibit specific seasonal production patterns and different preferred vertical habitats. The seasonal and vertical habitats are not constant throughout the range of the species and changes therein must be considered ...
K. Kretschmer, L. Jonkers, M. Kučera, M. Schulz   +3 more
semanticscholar   +1 more source

Correspondence: No substantial long-term bias in the Cenozoic benthic foraminifera oxygen-isotope record [PDF]

, 2018
Publisher PDFPeer ...
BS Cramer, BS Cramer, D Evans, E Anagnostou, JC Zachos, JT Kiehl, K Littler, KM Edgar, PK Bijl, PK Bijl, PMJ Douglas, PN Pearson, R Kozdon, R Tenzer, S Bernard   +14 more
core   +8 more sources

Planktonic Foraminifera Biostratigraphy Of Taeno Limestone, Ambon, Maluku Province, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology
The limestone became exposed to the surface because of an uplift event during the Quaternary period. This study aims to determine the age of limestone outcrops in the Taeno Traverse using planktonic foraminifera.
Zulfiah, Sanny V. Aponno, Erfin Elly
doaj   +1 more source

Upper Oligocene to Pleistocene planktonic foraminifera stratigraphy at North Atlantic DSDP Site 407, Reykjanes Ridge: diversity trends and biozonation using modern Neogene taxonomic concepts [PDF]

Journal of Micropalaeontology
Deep Sea Drilling Project (DSDP) Site 407, located near the Reykjanes Ridge (southwest of Iceland) offers a rare and extensive record of Late Cenozoic planktonic foraminifera evolution spanning the Neogene and Quaternary periods. This ca.
T. M. Weitkamp, T. M. Weitkamp, M. J. Razmjooei, M. J. Razmjooei, P. N. Pearson, H. K. Coxall, H. K. Coxall   +6 more
doaj   +1 more source

Palaeogene triserial planktonic foraminifera [PDF]

Journal of Micropalaeontology, 1998
Abstract. Triserial planktonic foraminiferal species from the Palaeogene are classified into the Early Danian Guembelitria, with pore mounds on the test surface, and the Early Eocene-Late Oligocene Jenkinsina, which are also microperforate but lack pore mounds. The stratigraphic and palaeogeographic ranges are discussed, the holotype of G.
Jenkins, D. Graham, Whittaker, John E., Curry, Dennis   +2 more
openaire   +2 more sources

Factors influencing test porosity in planktonic foraminifera

Biogeosciences, 2018
. The clustering of mitochondria near pores in the test walls of foraminifera suggests that these perforations play a critical role in metabolic gas exchange. As such, pore measurements could provide a novel means of tracking changes in metabolic rate in
Janet E. Burke, W. Renema, M. Henehan, L. Elder, C. V. Davis, Amy E. Maas, G. Foster, R. Schiebel, P. Hull   +8 more
semanticscholar   +1 more source

Seasonal Variation in Shell Calcification of Planktonic Foraminifera in the NE Atlantic Reveals Species-Specific Response to Temperature, Productivity, and Optimum Growth Conditions. [PDF]

PLoS One, 2016
Using shells collected from a sediment trap series in the Madeira Basin, we investigate the effects of seasonal variation of temperature, productivity, and optimum growth conditions on calcification in three species of planktonic Foraminifera. The series
Weinkauf MF, Kunze JG, Waniek JJ, Kučera M.   +3 more
europepmc   +2 more sources