Pathways of carbon oxidation in continental margin sediments off central Chile
نویسندگان
چکیده
منابع مشابه
Fluxes of dissolved organic carbon from California continental margin sediments
Fluxes of dissolved organic carbon (DOC) from marine sediments represent a poorly constrained component of the oceanic carbon cycle that may affect the concentration and composition of DOC in the ocean. Here we report the first in situ measurements of DOC fluxes from continental margin sediments (water depths ranging from 95 to 3,700 m), and compare these fluxes with measured benthic fluxes fro...
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Sulfate reduction rates (SRR) and concentrations of SO4 , H2S, pyrite sulfur, total sulfur, CH4, and organic carbon were measured with high depth resolution through the entire length of the SO4 -zone and well into the CH4-zone at two continental slope stations in the eastern South Atlantic (Benguela upwelling area). The sediments were characterized by a high organic carbon content of approx. 7....
متن کاملChanges of macrobenthos composition under different ENSO cycle conditions on the continental shelf off central Chile
The course of environmental conditions and shelf macrobenthic communities off Central Chile ( 361S) during the strong 1997–98 El Niño (EN) event is compared with a subsequent and basically ‘‘normal’’ period (2002–2003). Changes in macrofaunal community, feeding mode structure, and biomass size spectra are contrasted over time with changes in oceanographic and sediment settings, in order to asse...
متن کاملMolecular diversity of denitrifying genes in continental margin sediments within the oxygen-deficient zone off the Pacific coast of Mexico.
To understand the composition and structure of denitrifying communities in the oxygen-deficient zone off the Pacific coast of Mexico, the molecular diversity of nir genes from sediments obtained at four stations was examined by using a PCR-based cloning approach. A total of 50 operational taxonomic units (OTUs) for nirK and 82 OTUs for nirS were obtained from all samples. Forty-four of the nirS...
متن کاملpolitical economy of china in central asia
this research is about the political economy of china in central asia. in this research the political & economic interactions affected on chinas political economy in central asia are examined. chinas goal of presence in central asia including political-security, economic and energy goals is described in one part. in another part, the trade relations between china and central asian countries ar...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 1996
ISSN: 0024-3590
DOI: 10.4319/lo.1996.41.8.1629