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Past and present of sediment and carbon biogeochemical cycling models
Past present sediment carbon biogeochemical cycling models
2010/1/7
The global carbon cycle is part of the much more extensive sedimentary cycle that involves large masses of carbon in the Earth's inner and outer spheres. Studies of the carbon cycle generally followed...
Phosphonates and particulate organic phosphorus cycling in an anoxic marine basin
Phosphonates particulate organic phosphorus
2014/5/19
Total particulate phosphorus (TPP), particulate inorganic P (PIP), and particulate organic P (POP) concentrations
were measured in a year-long series of sediment trap samples collected throughout the...
Diurnal cycling of glutathione in marine phytoplankton: Field and culture studies
glutathione marine phytoplankton Field culture
2014/5/19
Glutathione is an abundant intracellular thiol that is involved in the detoxification of reactive oxygen species generated in the presence of light. We used short-term continuous cultures of Emiliania...
Phosphonates and particulate organic phosphorus cycling in an anoxic marine basin
Phosphonates particulate organic phosphorus
2014/5/19
The phylogenetic composition of bacterial communities varies along the salinity gradient of estuaries, one notable
pattern being the prevalence of alpha- and beta-proteobacteria in salt- and freshwat...
Relationship between bacterial community structure, light, and carbon cycling in the eastern subarctic North Pacific
bacterial community structure light carbon cycling eastern subarctic North Pacific
2014/5/19
Biogeochemical controls on the community structure of heterotrophic marine bacteria are not well understood, and these organisms play a critical role in the global carbon cycle. Through terminal restr...
Extreme 13C enrichments in a shallow hypereutrophic lake: Implications for carbon cycling
Extreme 13C enrichment shallow hypereutrophic lake carbon cycling
2014/5/19
An analysis of stable carbon isotope (δ13C) ratios in Lake Apopka, Florida, reveals extreme 13C enrichments of dissolved inorganic carbon (DIC) pools in the water column and sediment pore water of thi...
Nutrient cycling in a strongly acidified mesotrophic lake
Nutrient cycling a strongly acidified mesotrophic lake
2014/5/19
In contrast to the well-known nutrient transformations in circumneutral lakes, acidified water bodies may exhibit significant changes in nutrient cycling due to changes in their chemistry and biology....
Seasonal variation of the d13C and d15N of particulate and dissolved carbon and nitrogen in Lake Lugano: Constraints on biogeochemical cycling in a eutrophic lake
Seasonal variation d13C and d15N particulate and dissolved carbon and nitrogen Lake Lugano biogeochemical cycling a eutrophic lake
2014/5/14
We determined the δ13C and δ15N of water-column particulate organic matter (POM), dissolved inorganic carbon, and nitrate, together with water chemistry and phytoplankton biomass and species compositi...
Sources and cycling of carbonyl sulfide in the Sargasso Sea
Sources and cycling carbonyl sulfide Sargasso Sea
2014/5/14
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 L-1, showed minor di...
Phytoplankton growth, microzooplankton grazing, and carbon cycling in marine systems
Phytoplankton growth microzooplankton grazing
2014/5/14
We present an analysis of the global impact of microplanktonic grazers on marine phytoplankton and its implications for remineralization processes in the microbial community. The data were obtained by...
Benthic primary production and nutrient cycling in sediments with benthic microalgae and transient accumulation of macroalgae
Benthic primary production nutrient cycling sediments benthic microalgae transient accumulation of macroalgae
2014/5/22
Annual rates of sediment denitrification and sediment-water fluxes of oxygen and nutrients were quantified at two shallow locations, Virksund and Ulbjerg, in the Limfjorden, Denmark. The sediment was ...
Benthic metabolism and sulfur cycling along an inundation gradient in a tidal Spartina anglica salt marsh
Benthic metabolism sulfur cycling inundation gradient tidal Spartina anglica saltmarsh
2014/5/22
Central aspects of carbon and sulfur biogeochemistry were studied along a transect extending from an unvegetated mudflat into a Spartina anglica salt marsh. Conditions along the transect differed with...
Cycling of colloidal organic carbon and nitrogen during an estuarine phytoplankton bloom
colloidal organic carbon and nitrogen estuarine phytoplankton bloom
2014/5/22
To establish the influence of phytoplankton blooms on the cycling of dissolved and particulate species of organic carbon and nitrogen, we conducted a field study during a series of blooms in a coastal...
Planktonic carbon cycling and transport in surface waters of the highly urbanized Hudson River estuary
Planktonic carbon cycling and transport surface waters highly urbanized Hudson River estuary
2014/5/21
We examined variations in organic carbon (OC) pools and microplanktonic carbon fluxes at three stations in the Hudson River estuary during 12 cruises between Octobers of 1996 and 1998. Phytoplankton b...
The role of the picoeukaryote Aureococcus anophagefferens in cycling of marine high-molecular weight dissolved organic nitrogen
picoeukaryote Aureococcus anophagefferens marine high-molecular weight dissolved organic nitrogen
2014/5/21
Environmental evidence suggests that Aureococcus anophagefferens (Pelagophyceae), a eukaryotic picoplankton that blooms in coastal seawaters, can outcompete other organisms because of its ability to u...