Planktonic foraminiferal Cd/Ca: Paleonutrients or paleotemperature?
نویسندگان
چکیده
منابع مشابه
Overview of Eocene Planktonic Foraminiferal Taxonomy, Paleoecology, Phylogeny, and Biostratigraphy
This monograph has been compiled by members of the Paleogene Planktonic Foraminifera Working Group (hereafter referred to as the Working Group) of the International Subcommission on Paleogene Stratigraphy, International Union of Geological Sciences. It is the second such work in a projected series of three, the first being the Atlas of Paleocene Planktonic Foraminifera published by Smithsonian ...
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Benthic foraminifera were cultured for five months at four temperatures (4, 7, 14 and 21 C) to establish the temperature dependence of foraminiferal calcite δ18O and Mg/Ca. Two Bulimina species (B. aculeata and B. marginata) were most successful in terms of calcification, adding chambers at all four temperatures and reproducing at 7 and 14 C. Foraminiferal δ18O values displayed ontogenetic vari...
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We present large subunit (LSU) and internal transcribed spacer (ITS) rDNA based phylogenies of symbiotic dinoflagellates retrieved from single-cell planktonic foraminifera collected around the world. All modern foraminiferal species involved in such symbiosis are included in our analyses. The pelagic symbiotic dinoflagellates form a monophyletic group sister to the Symbiodinium species complex ...
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Planktonic foraminifera are a source of important geochemical, palaeoceanographic, and palaeontological data. However, many aspects of their ecology remain poorly understood, including whether or not gross morphology has an ecological function. Here, we measure the force needed to crush multiple planktonic foraminiferal morphotypes from modern core top and tow samples. We find significant diffe...
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Proxies from Greenland ice cores and North Atlantic marine sediment cores document repeated extreme climate swings of a few decades to millennia during the last glacial cycle, including periods of intense ice rafting called Heinrich events (HEs). We have found similar oxygen isotope variations recorded inmixed-layer– and thermocline-dwelling planktonic foraminifera during HEs 0, 1, and 4, sugge...
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ژورنال
عنوان ژورنال: Paleoceanography
سال: 1999
ISSN: 0883-8305
DOI: 10.1029/1999pa900007