Mg/Ca microanalysis of planktonic foraminifera Globigerinoides …
Weband d18O analysis of Globigerinoides sacculifer tests indicate that interspecies differences in Mg/Ca values result from different depth habitats. The average Mg/Ca values of G. ruber final chambers reflect the temperature of the surface mixed layer (0–25 m), whereas those of G. sacculifer and Pulleniatina
Limnology and Oceanography - Wiley Online Library
WebThe chemical environment and the symbiotic photosynthesis of the spinose foraminiferan, Globigerinoides sacculifer, from the Gulf of Aqaba, northern Red Sea, were studied with O 2 and pH microelectrodes at a resolution of 50–100 µm. In the dark, the foraminiferan respiration lowered the O 2 concentration at the shell surface to 50% of air saturation, …
Globigerinoides sacculifer (Brady, 1877) | Species
WebGlobigerinoides sacculifer (Brady 1877) 📊 Temporal Distribution. 📷 Related Observations. Load More ...
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Foraminiferal Population Dynamics And Stable Carbon Isotopes
WebAbstract. Most planktic foraminifera live within the photic zone and exhibit a life style tied to the lunar cycle. They migrate between the reproductive depth (thermocline and/or the chlorophyll maximum) and the uppermost part of the photic zone. This ontogenetic migration pattern sets the initial δ 13 C of the foraminiferal shell.
Incorporation and preservation of Mg in Globigerinoides sacculifer ...
Web1 feb. 2000 · Analyses of Mg/Ca in planktonic foraminifera Globigerinoides ruber (white) tests were made to evaluate burial influences and preservation before reconstructing paleotemperatures.
Full article: Systematic taxonomy of the Trilobatus sacculifer plexus ...
Web7 mei 2019 · Globigerinoides sacculifer subsacculifera Cita, Premoli Silva & Rossi, Citation 1965 was erected for specimens of similar gross morphology to T. sacculifer, but possessing a smaller test and less-developed sac-like final chamber. The last chamber is elongated, but not as pointed and protruding as in T. sacculifer (Cita et al. Citation 1965).
Surface and subsurface seawater temperature ... - Wiley Online …
Web3 jul. 2009 · Relationships between sea surface temperature and sample mean Mg/Ca values of different test components: (a) average final chamber Mg/Ca compositions of Globigerinoides sacculifer, G. ruber, and Pulleniatina obliquiloculata; (b) low-Mg/Ca layer compositions of Globigerinoides sacculifer and G. ruber; and (c) Pulleniatina …
pforams@mikrotax - Globigerinoidesella fistulosa
WebCatalog entries:Globigerina fistulosa, Globigerinoides quadrilobatus hystricosus, Globigerinoidesella bollii. Distinguishing features: Parent taxon (Globigerinoidesella): Supplementary apertures, cancellate wall & elongate extensions to final chamber.This taxon: Final chambers compressed and radially elongate with multiple slender digitate ...
An estimation of calcium carbonate deposition rate in a
WebAn estimation of calcium carbonate deposition rate in a planktonic foraminifer Globigerinoides sacculifer using 45Ca as a tracer a recommended procedure for improved accuracy Anderson, OR.; Faber, W W.; Jr. Journal of Foraminiferal Research 144: 303-308 1984. ISSN/ISBN: 0096-1191. DOI: 10.2113/gsjfr.14.4.303
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