Molecular and isotopic composition of foraminiferal organic linings

@article{Fhlaithearta2013MolecularAI,
  title={Molecular and isotopic composition of foraminiferal organic linings},
  author={Shauna N{\'i} Fhlaithearta and S. Ernst and Klaas G.J. Nierop and Gert J. Lange and Gert‐Jan Reichart},
  journal={Marine Micropaleontology},
  year={2013},
  volume={102},
  pages={69-78}
}
Abstract Fossil remnants of benthic foraminifera consist of carbonate tests and their organic linings. The macromolecular and stable isotopic composition of these benthic foraminiferal organic linings was characterized to evaluate their potential use as paleoclimate proxies. Using Curie point pyrolysis–GC–MS (Py–GC–MS) we show that benthic foraminiferal organic linings consist of protein and polysaccharides, bound together in a complex macromolecular structure. Both chitin derivatives and… Expand
Foraminiferal organic linings: Functional and phylogenetic challenges
Abstract Foraminifera are commonly applied as essential tools for relative time control and reconstructions of paleo/environmental conditions. These single-celled organisms leave in the sedimentaryExpand
Weaving of biomineralization framework in rotaliid foraminifera: implications for paleoceanographic proxies
Abstract. Elemental and/or isotopic signatures of calcareous tests of foraminifera are commonly used to reconstruct paleoenvironmental conditions. A major problem, often referred to as the “vitalExpand
Weaving of biomineralization framework in rotaliid foraminifera: Implications for paleoenvironmental reconstructions
Abstract. Foraminifera are commonly used to reconstruct paleoenvironmental conditions based on the taxonomical composition, as well as elemental and/or isotopic signatures of their calcareous tests.Expand
Element banding and organic linings within chamber walls of two benthic foraminifera
TLDR
Evaluated and synthesized models of underlying mechanisms responsible for trace and minor element partitioning during calcification in foraminifera show that Mg, Na, Sr and K are co-located within shells, and occur in bands that coincide with organic linings but extend further into the calcite lamella. Expand
Correlation between the carbon isotopic composition of planktonic foraminifera-bound organic matter and surface water pCO2 across the equatorial Pacific
Abstract For times prior to those represented by the air trapped in Antarctic ice core records, the concentration of CO2 in the atmosphere must be reconstructed using geochemical proxies. The δ13C ofExpand
Sulfur in foraminiferal calcite as a potential proxy for seawater carbonate ion concentration
Abstract Sulfur (S) incorporation in foraminiferal shells is hypothesized to change with carbonate ion concentration [ CO 3 2 − ], due to substitution of sulfate for carbonate ions in the calciteExpand
Double Trouble : Foraminiferal calcification in a changing ocean
Within the project ‘Double Trouble: Foraminiferal Calcification in a Changing Ocean’, I tried to illuminate mechanisms determining element incorporation in foraminifera with different calcificationExpand
Chemical Heterogeneity of Mg, Mn, Na, S, and Sr in Benthic Foraminiferal Calcite
The chemical composition of fossil foraminiferal shells (tests) is widely used as tracers for past ocean chemistry. It is, therefore, important to understand how different (trace) elements areExpand
Microbial Alteration of Carbonate Archives
Marine biogenic carbonates are comprehensive archives of paleoenvironmental conditions. The main environmental variables that can be deduced from carbonate elemental- and isotopic composition areExpand
Manganese incorporation in living (stained) benthic foraminiferal shells: a bathymetric and in-sediment study in the Gulf of Lions (NW Mediterranean)
Abstract. Manganese geochemistry in deep-sea sediments is known to vary greatly over the first few centimeters, which overlaps the in-sediment depth habitats of several benthic foraminiferal species.Expand
...
1
2
3
...

References

SHOWING 1-10 OF 59 REFERENCES
Effect of seawater carbonate concentration on foraminiferal carbon and oxygen isotopes
Stable oxygen and carbon isotope measurements on biogenic calcite and aragonite have become standard tools for reconstructing past oceanographic and climatic change. In aquatic organisms, 18O/16OExpand
Ecological significance of benthic foraminifera: 13C labelling experiments
TLDR
The ability of foraminifera in taking up freshly deposited algal carbon in intertidal estuarine sediments and the significant contribution of foraminaifera to meiobenthic abundance and biomass suggest that foraminifiera play an important role in the carbon cycle in these sediments. Expand
Calculating surface water PCO2 from foraminiferal organic δ13C
Abstract The δ13C of organic matter bound within the crystal lattice of foraminiferal calcite tests may provide a potential tracer of the isotopic composition of the surface water primaryExpand
Proteins from the organic matrix of core-top and fossil planktonic foraminifera
Abstract Organic constituents isolated from the tests (shells) of six species of core-top planktonic foraminifera, ranging in age between 2 and 4 Ka BP, consist of a heterogeneous mixture of proteinsExpand
The δ13C in benthic foraminiferal tests of Fontbotia wuellerstorfi (Schwager) Relative to the δ13C of dissolved inorganic carbon in Southern Ocean Deep Water: Implications for glacial ocean circulation models
On a transect between 20° and 70°S in the eastern Atlantic Ocean and Weddell Sea, water samples from 19 hydrographic stations and bottom water from 55 surface sediment samples taken with a multipleExpand
Effects of chemical pretreatments on δ18O measurements, chemical composition, and morphology of chironomid head capsules
Stable oxygen isotope measurements on fossil chironomid head capsules from lake sediments show that these chitinous remains can be used to reconstruct past lake water δ18O and, indirectly, pastExpand
Biosynthesis of glycosaminoglycans in foraminifera: A review
TLDR
Both the secretion of organic material by foraminifera as well as the production of organic linings and organic cements are caused by the same intracellular mechanism. Expand
Stable carbon isotope biogeochemistry of monosaccharides in aquatic organisms and terrestrial plants
TLDR
The enrichment in 13 C of glucose produced in abundance by heterotrophs may be a controlling factor in the stepwise enrichment in carbon isotopes with increasing trophic level in food webs. Expand
Novel observations on biomineralization processes in foraminifera and implications for Mg/Ca ratio in the shells
Stable isotopes and trace elements in foraminifera shells are important for determining the paleochemistry of the ocean, and Mg/Ca ratios and δ 1 8 O values in foraminifera have recently been used toExpand
Macromolecular composition of the dinoflagellate cyst Thalassiphora pelagica (Oligocene, SW Germany)
Origin, composition and fate of organic particles in marine sediments are to a large extent unknown. Here we contribute to resolving this lack of information by reporting on the structuralExpand
...
1
2
3
4
5
...