منابع مشابه
Mineralization of dissolved organic carbon in the Sargasso Sea
The lability of dissolved organic carbon was estimated in the Sargasso Sea. Rates of DOC mineralization were estimated by monitoring, with high precision, the accumulation of CO, in dark incubation bottles after the removal of particles > 0.8 pm in size. The minimum incubation time used in these experiments was 24 h. Rates from three 24 h incubations conducted on water from 20 m fell in the nar...
متن کاملDiel Variations of Bio-optical Properties in the Sargasso Sea
Concurrent time series measurements including: percent transmission of a collimated beam of 660 nm light (converted to beam attenuation coefficient, C), photosynthetically available radiation (PAR), and chlorophyll (chI) fluorescence were obtained at 7-8 depths within the upper 160m of the Sargasso Sea (34N 70W) from Mar-Oct 1987 using a moored array of instruments (see Dickey et al., this volu...
متن کاملNew production in the Sargasso Sea: History and current status
[1] The Sargasso Sea has been, and continues to be, the focus for research on new production in the open ocean. The history of the concept and the evolution of understanding of the mechanisms is reviewed from its inception in the early 1960s through a controversial period in the 1980s to the current status of a plethora of sources of new nitrogen. Rather than viewing all processes supplying new...
متن کاملMesoscale variability in the metabolic balance of the Sargasso Sea
Net community production (NCP) experiments based on in vitro changes in dissolved oxygen were carried out in three mesoscale eddies investigated in the Sargasso Sea in the summer of 2004. NCP estimates ranged from negative to positive values, and the age and type of the sampled eddy were important factors responsible for this variability. Positive rates occurred in younger cyclones and in areas...
متن کاملSources And Cycling of Carbonyl Sulfide in the Sargasso Sea
The cycling of the radiatively important gas carbonyl sulfide (OCS) was studied in surface waters of the Sargasso Sea. In August 1999, surface OCS concentrations averaged 8.6 pmol L21, showed minor diel variations, and varied little with depth. An OCS precursor, total dissolved organic sulfur (DOS), was lowest at the surface (40 nmol L21) and increased with depth. The photoproduction rate of OC...
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ژورنال
عنوان ژورنال: The Journal of Academic Social Science Studies
سال: 2014
ISSN: 2147-2971
DOI: 10.9761/jasss2231