Organic matter in sediments

On the oxidation of organic matter in marine sediments by bacteria

The question as to whether the organic matter in the sea bottom is inert or is available as a nutrient for the bottom fauna and bottom-inhabiting bacteria is a ...

A Molecular Evaluation of Contaminants and Natural Organic Matter ...

The post-glacial recent muddy sediments in western Lake Ontario are the subject of this research , which is an outgrowth of a sediment acoustic mapping project.

New Approach to Characterize Natural Organic Matter in ...

Organic carbon concentrations in sediments more than 1 meter below the land surface are typically 10 to 200 times lower than in surface soils, ...

Spatial distribution of organic matter in the surface sediments of ...

Analyses of organic matter content, organic carbon, nitrogen, sulfur and granulometric variables were per- formed on 101 surface sediment samples from ...

Characterization of organic matter in lake sediments from Minnesota ...

Samples of sediment from lakes in Minnesota and Yellowstone National Park (YNP) were analyzed for organic carbon (OC), hydrogen richness by Rock-Eval ...

Temperature-driven decoupling of key phases of organic matter ...

Sediment microbial activity plays a major role in determining whether particulate organic carbon is recycled or buried. A diverse consortium of ...

Isotopic signatures of organic matter in sediments of the continental ...

The 87Sr, 13C, and 15N isotopic signatures of organic matter in sediments from the continental shelf facing the Orinoco Delta were measured to determine the ...

The determination of organic matter in river sediments

The importance of organic matter in ecosystems is characterized and the traditional methods for determining organic matter - wet oxidation and ...

How Much Organic Carbon is Actually Preserved? GEO GIRL

Ever wonder what fraction of organic carbon actually gets buried and preserved relative to how much was originally produced?

Does Arctic warming reduce preservation of organic matter in ...

[29] investigated surface sediment samples from several marine environments including the Southern Ocean, Mexican and Indian Margins, St.

Complexation by Organic Matter Controls Uranium Mobility in ...

Our study demonstrates a major role for OM as a U(IV)-complexing sorbent in sediments that experience variations in moisture content or low- ...

Fractionation of the organic matter in soils and sediments and their ...

It was found that soils contained a higher percentage of cellulose and hemicellulose materials whereas the lipid‐like fraction was greater in the sediments.

Uranium(IV) adsorption by natural organic matter in anoxic sediments

Our work demonstrates unequivocally that U(IV) adsorbs to natural organic matter under anoxic, field-relevant conditions.

An Assessment of the Contribution of Terrestrial Organic Matter to ...

ratio, and phosphate content were used as the proxies to determine the biodegradability of the sediment organic matter. ... terrestrial materials into the lochs ...

File:Organic matter supply to ocean sediments.png

(1) Organic matter settling from the water column is deposited at seafloor (donor control; fixed flux upper boundary condition). (2) Sediments ...

Lecture 1: Origin and Preservation of Organic Matter - YouTube

Petroleum system, domains of life, lipids, redox, anoxia, sedimentation rate, Middelburg, petroleum, sample collection.

50. 9.3 Organic Sedimentary Rocks - BCcampus Pressbooks

(a) Accumulation of organic matter within a swampy area forms a layer of peat; (b) The organic matter is buried under sediment and is compressed; (c) With ...

What is organic matter? How is organic matter formed ... - YouTube

In this video, what is organic matter? How is organic matter formed? How does organic matter turn into oil? detailed information is given.

Humus - Wikipedia

In classical soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil ...

Organic matter – State - WetlandInfo

The breakdown of organic matter can result in low dissolved oxygen (e.g. hypoxia or anoxia) in the water (eutrophication). Sediment oxygen ...