alexa Degradation and Preservation of Organic Matter in Marine Sediments
Agri and Aquaculture

Agri and Aquaculture

Journal of Marine Science: Research & Development

Author(s): Stuart G Wakeham

Abstract Share this page

Organic matter that is deposited in aquatic sediments is subject to an intense diagenetic reactor that determines how much organic carbon is eventually preserved in sediments. The balance between organic matter degradation and preservation has immense consequences for the global carbon and oxygen cycles. A diverse set of hypotheses regarding the controls on organic matter degradation/preservation have received considerable attention over the past decade, most often revolving around the relative roles of bottom water and pore water oxygen and the rate of organic matter delivery to the sediments. These overriding hypotheses have in turn spawned numerous other hypotheses on specific topics. In this review, we discuss four important controls that impact on the degradation and subsequent preservation of organic matter in aquatic sediments. Our focus areas are: (1) the chemical nature of the organic substrate; (2) the potential influence of matrix on preservation; (3) the role of redox effects in degradation; and (4) the effects of physical mixing of sediments. Although we have divided our discussion under these headings, it will immediately become apparent that these subsections are at best arbitrary and that the four factors are indeed intimately related.

  • To read the full article Visit
  • Subscription
This article was published in Chapter Marine Organic Matter: Biomarkers, Isotopes and DNA and referenced in Journal of Marine Science: Research & Development

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords