搜索结果: 1-9 共查到“海洋科学 Diagenesis”相关记录9条 . 查询时间(0.063 秒)
Accumulation of prokaryotic remains during organic matter diagenesis in surface sediments off Peru
Accumulation of prokaryotic organic matter diagenesis
2014/4/18
Bacterial biomarkers (D-amino acids and muramic acid) were investigated in surface sediments (0–1 cm) at 22
stations in the Peru margin. Concentrations were used to quantitatively estimate the relati...
Organic matter diagenesis and bacterial contributions to detrital carbon and nitrogen in the Amazon River system
Organic matter diagenesis bacterial contributions
2014/4/18
Amino sugars and amino acids, including the bacterial biomarkers muramic acid and D-amino acids, were
measured to investigate the diagenetic alterations of and microbial contributions to detrital org...
Early diagenesis and trophic role of extracellular DNA in different benthic ecosystems
Early diagenesis extracellular DNA different benthic ecosystems
2014/4/22
To provide new insights into the early diagenesis of extracellular deoxyribonucleic acid (DNA) and its relevance in trophodynamic processes, we collected sediment samples from a variety of coastal and...
Effects of progressive oxygen depletion on sediment diagenesis and fluxes: A model for the lower St. Lawrence River Estuary
progressive oxygen depletion sediment diagenesis fluxes A model for the lower St. Lawrence River Estuary
2014/4/21
We applied a diagenetic model to examine the effects of a decadal-timescale progressive decrease in bottomwater oxygen concentration on sediment geochemistry and fluxes across the sediment-water inter...
Quantification of macrobenthic effects on diagenesis using a multicomponent inverse model in salt marsh sediments
Quantification of macrobenthic effects diagenesis using multicomponent inverse model salt marsh sediments
2014/5/19
Using a multicomponent inverse model, we quantified the rates of organic matter (OM) remineralization and the relative importance of major terminal electron acceptors [Fe(III)-(oxy)hydroxides and SO4-...
Early diagenesis of plant-derived dissolved organic matter along a wetland, mangrove, estuary ecotone
Early diagenesis wetland
2014/5/19
We studied the role of photochemical and microbial processes in contributing to the transformation of dissolved
organic matter (DOM) derived from various plants that dominate the Florida Everglades. ...
Decrease in molecular weight of photosynthetic products of marine phytoplankton during early diagenesis
molecular weight photosynthetic products marine phytoplankton early diagenesis
2014/5/14
Changes in the size and neutral aldose (NAld) composition of phytoplankton photosynthetic products during the early diagenetic process were experimentally examined using 13C as a tracer. Most (94.7%) ...
Origin and diagenesis of polyphosphate in lake sediments: A 31 P-NMR study
polyphosphate lake sediments
2014/5/14
Polyphosphate (poly-P) was detected with the use of
31
P nuclear magnetic resonance (NMR) spectroscopy in
sediments from a large variety of lakes with different trophic state and morphometry. In th...
Transition-matrix model of bioturbation and radionuclide diagenesis
Transition-matrix model bioturbation radionuclide diagenesis
2014/6/9
Bioturbation rates in muddy sediments are thought to be due primarily to the reworking activities of benthic deposit feeders. However, current mathematical models of bioturbation do not explicitly lin...