Linked Life Data

12917681

Source:http://linkedlifedata.com/resource/pubmed/id/12917681

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6950
pubmed:dateCreated
2003-8-14
pubmed:abstractText
More than 50% of the Earth' s surface is sea floor below 3,000 m of water. Most of this major reservoir in the global carbon cycle and final repository for anthropogenic wastes is characterized by severe food limitation. Phytodetritus is the major food source for abyssal benthic communities, and a large fraction of the annual food load can arrive in pulses within a few days. Owing to logistical constraints, the available data concerning the fate of such a pulse are scattered and often contradictory, hampering global carbon modelling and anthropogenic impact assessments. We quantified (over a period of 2.5 to 23 days) the response of an abyssal benthic community to a phytodetritus pulse, on the basis of 11 in situ experiments. Here we report that, in contrast to previous hypotheses, the sediment community oxygen consumption doubled immediately, and that macrofauna were very important for initial carbon degradation. The retarded response of bacteria and Foraminifera, the restriction of microbial carbon degradation to the sediment surface, and the low total carbon turnover distinguish abyssal from continental-slope 'deep-sea' sediments.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1476-4687
pubmed:author
pubmed:issnType
Electronic
pubmed:day
14
pubmed:volume
424
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
763-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
In situ experimental evidence of the fate of a phytodetritus pulse at the abyssal sea floor.
pubmed:affiliation
Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany. uwitte@mpi-bremen.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't