Planktic foraminifera
Morphological Change During The Ontogeny Of The Planktic Foraminifera
... tic foraminifera allow us to investigate the influence of developmental constraints on ...of planktic foraminifera, including morphotypes of a species exhibiting high phenotypic plastic- ity and ...
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Evaluating the utility of B/Ca ratios in planktic foraminifera as a proxy for the carbonate system : a case study of Globigerinoides ruber
... [Allen et al., 2011, 2012] show that other factors also influence boron incorporation in foraminiferal calcite. Recent inorganic precipitation experiments have also demonstrated precipitation rate effects on B/Ca ratios ...
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Major perturbations in the global carbon cycle and photosymbiont-bearing planktic foraminifera during the early Eocene
... Lithification should further impact bulk carbonate δ 18 O records (Marshall, 1992; Schrag et al., 1995; Frank et al., 1999). Because this process occurs well below the seafloor, where temperatures approach or exceed ...
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Distribution and ecology of planktic foraminifera in the North Pacific : implications for paleo reconstructions
... Planktic foraminifera abundance and flux have been widely used as proxies for paleoenvironmental change (Bond et al. 1993; Barker et al. 2009; Barker et al. 2015). In the Atlantic and Southern oceans, true ...
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Evolutionary classification of the Upper Cretaceous (Turonian–lower Campanian) planktic foraminifera with incipient meridional ornamentation
... ornamented planktic foraminifera of Late Cretaceous (late Cenomanian–early Cam- panian) age reveals the existence of a new genus, Fingeria, which includes ...
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A record of Neogene seawater δ11B reconstructed from paired δ11B analyses on benthic and planktic foraminifera
... B planktic , temperature and δ 13 C DIC estimates for the surface and deep ocean through the last 23 million ...B planktic surface; (b) δ 11 B borate deep from ben- thic foraminifera (blue) from this ...
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A chronocladogeny and corresponding classification of Neogene planktic foraminifera with a documentation of morphotypes from two Pacific deepsea stratigraphic sections
... Eocene-H-locene Siphonlnldae leve 1 1: Eocene-Oli gocene Gl abrate.lll dae and derivatives Eocene-Oll gocene GlabratelH dae Mlocene-Holocefe Pegldildae Miocene-Holocene glabratellids Lev[r] ...
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Revisiting carbonate chemistry controls on planktic foraminifera Mg Ca: implications for sea surface temperature and hydrology shifts over the Paleocene–Eocene Thermal Maximum and Eocene–Oligocene transition
... ative to the pre-CIE baseline, with error bars that incorpo- rate the full range of uncertainties that we discuss above. Temperature shows a broad relationship with palaeolatitude, with < 2 ◦ C warming in the ...
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Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth integrated growth
... size–isotope trend; however, depth migration with size is not demonstrated in the δ 18 O of the distinct size fractions. Berger et al. (1978) further considered that the “mixed” trend poses a problem in the ...
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Extreme lowering of deglacial seawater radiocarbon recorded by both epifaunal and infaunal benthic foraminifera in a wood-dated sediment core
... In a single interval from 106 to 110 cm of the LPAZ-21P core, which was predicted to be ≈ 25.5 kyr based on inter- polation from our Bayesian statistical age model, the wood and benthic and planktic ...
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Deciphering the state of the late Miocene to early Pliocene equatorial Pacific
... applied in equation (1) (Evans, Brierley, et al., 2016). The past seawater Mg/Ca correction introduces an addi- tional uncertainty of 0.25°C, increasing the total temperature uncertainty to 0.98°C for nonsize-corrected ...
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The accuracy of mid Pliocene δ18O based ice volume and sea level reconstructions
... benthic foraminifera, and whether this diagenetic calcite differs isotopically from the original biogenic ...Pleistocene planktic foraminifera [Wycech et ...
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Biostratigraphy and palaeoecological interpretation of the Miocene–Pleistocene sequence at El-Dabaa, northwestern Egypt
... of foraminifera. Benthic specimens are dominant, with very few planktic individuals (P/B ...benthic foraminifera slightly di ff erent from that of the overlying oolitic limestones and geosoil (Unit I) ...
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The planktic foraminifer Planorotalites in the Tethyan middle Eocene
... Smaller planktic foraminifera show more kinetic fractionation, because their rela- tively high metabolic activity causes incorporation of more respired, isotopically light carbon into the test ...Larger ...
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Acarinina multicamerata n. sp. (Foraminifera): a new marker for the Paleocene–Eocene thermal maximum
... in planktic foraminifera, leading to short-lived species of Acarinina and Morozovella (Kelly et ...PETM, planktic foraminiferal assemblages in open-marine environments world- wide are dominated ...
8
The Paleocene–Eocene Thermal Maximum at DSDP Site 277, Campbell Plateau, southern Pacific Ocean
... the foraminifera recovered in this study have “glassy” preservation (Sexton et ...than, planktic foraminiferal δ 13 C through- out the studied ...than planktic δ 13 C ...both planktic and bulk ...
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First-order estimate of the planktic foraminifer biomass in the modern ocean
... Abstract. Planktic foraminifera are heterotrophic mesozooplankton of global marine ...of planktic foraminifers in the marine food web is di ff erent compared to other protozoans and ranges above the ...
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Some observations on an atypical planktic foraminifer from the Middle Eocene of Kutch, India
... atypical planktic foraminifer having close resemblance with Orbulinoides Blow & Saito, 1968 is recorded from a lignite mine section in Kutch, western ...studied foraminifera are, however, distinctly ...
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Boron isotopes in foraminifera : systematics, biomineralisation, and CO2 reconstruction
... in foraminifera and applied this tracer to the geological ...in foraminifera are discussed in detail, including results from benthic and planktic taxa, and models of boron incorporation, ...
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Sensitivity of Red Sea circulation to sea level and insolation forcing during the last interglacial
... the planktic foraminiferal fauna following high salini- ties during marine isotopic stage (MIS) 6 took place at sim- ilar sea-level stand ( ∼ 50 m below present day), and with a similar species succession, as ...
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