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Calibration of unsaturation patterns in long-chain ketone compositions for palaeotemperature assessment
A series of long-chain (C37, C38, C39), primarily di- and tri-unsaturated methyl and ethyl ketones, first identified in sediments from Walvis Ridge off West Africa and from the Black Sea1, has beenExpand
A new, mechanistic model for organic carbon fluxes in the ocean based on the quantitative association of POC with ballast minerals
Abstract In simulation studies of the ocean's role in the global carbon cycle, predicting the depth-distribution for remineralization of particulate organic carbon (POC) is of particular importance.Expand
Effect of Phytoplankton Cell Geometry on Carbon Isotopic Fractionation
The carbon isotopic compositions of the marine diatom Porosira glacialis and the marine cyanobacterium Synechococcus sp. were measured over a series of growth rates (μ) in a continuous culture systemExpand
The biochemical and elemental compositions of marine plankton: A NMR perspective
The traditional Redfield–Ketchum–Richards (1963) equation for the production (or respiration) of ‘‘average marine plankton’’ 106 CO2 þ 16 HNO3 þ H3PO4 þ 122 H2O ¼ð CH2OÞ106ðNH3Þ16ðH3PO4 Þþ 138 O2 hasExpand
Molecular indicators of diagenetic status in marine organic matter
The fluxes of individual carbohydrates, amino acids, lipids and pigments have been determined in net-plankton, particulate matter and sediments from three sites (9°N, 5°N, and 0°N) in the centralExpand
Consistent fractionation of 13C in nature and in the laboratory: growth-rate effects in some haptophyte algae.
Before concentrations of dissolved CO2 can be estimated from isotopic fractionations, some means of accounting for variations in growth rate must be found, perhaps by drawing on relationships between [PO4] and Cd/Ca ratios in shells of planktonic foraminifera. Expand
Poly cyclic aromatic hydrocarbons in Recent lake sediments—II. Compounds derived from biogenic precursors during early diagenesis
Abstract Five groups of polycyclic aromatic hydrocarbons (PAH) thought to be derived by early-diagenetic transformations of biogenic precursors are apparently present in Recent sediments of fourExpand
Comparison of Vertical Distributions of Prokaryotic Assemblages in the Anoxic Cariaco Basin and Black Sea by Use of Fluorescence In Situ Hybridization
For both basins, significant differences in total prokaryotic abundance and phylogenetic composition were observed among oxic, anoxic, and transitional (redoxcline) waters. Expand
Evidence for non-selective preservation of organic matter in sinking marine particles
It is suggested that organic matter might be protected from degradation by the inorganic matrix of sinking particles, and that amino-acid-like material predominates throughout the water column in both regions of the Pacific Ocean and the Arabian Sea. Expand
Compositions and transport of lipid biomarkers through the water column and surficial sediments of the equatorial Pacific Ocean
A systematic investigation of fluxes and compositions of lipids through the water column and into sediments was conducted along the U.S. JGOFS EgPac transect from l2°N to l5°S at 140°W. Fluxes ofExpand