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Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen
bacterial contribution the ocean reservoir detrital organic carbon nitrogen
2014/4/21
Bacterial biomarkers (D-amino acids and muramic acid) were measured in various organic matter size fractions collected in the North Pacific and North Atlantic, and they were used to quantitatively est...
The influence of dissolved organic carbon on bacterial phosphorus uptake and bacteria-phytoplankton dynamics in two Minnesota lakes
dissolved organic carbon bacterial phosphorus uptake bacteria-phytoplankton dynamics two Minnesota lakes
2014/4/21
The balance of production in any ecosystem is dependent on the flow of limiting nutrients into either the autotrophic or heterotrophic components of the food web. To understand one of the important co...
Mangrove tannins in aquatic ecosystems: Their fate and possible influence on dissolved organic carbon and nitrogen cycling
Mangrove tannins aquatic ecosystems fate possible influence dissolved organic carbon nitrogen cycling
2014/4/21
We describe the fate of mangrove leaf tannins in aquatic ecosystems and their possible influence on dissolved organic nitrogen (DON) cycling. Tannins were extracted and purified from senescent yellow ...
Relative independence of organic carbon transport and processing in a large temperate river: The Hudson River as both pipe and reactor
organic carbon transport and processing a large temperate river The Hudson River both pipe and reactor
2014/4/21
Bacterial respiration (BR) of organic matter is an important flux in the carbon budgets of large rivers, yet the regulation of BR and the relationship of this respiration to various organic matter sou...
Sinking particle properties from polyacrylamide gels during the KErguelen Ocean and Plateau compared Study (KEOPS): Zooplankton control of carbon export in an area of persistent natural iron inputs in the Southern Ocean
Sinking particle properties polyacrylamide gels during the KErguelen Ocean Zooplankton control area persistent natural iron inputs the Southern Ocean
2014/4/21
The Kerguelen ocean and plateau compared study (KEOPS) examined the origin of elevated phytoplankton biomass in naturally iron-fertilized waters over the Kerguelen plateau during midsummer (January-Fe...
Stoichiometric regulation of carbon and phosphorus in P-deficient Daphnia magna
Stoichiometric regulation carbon phosphorus P-deficient Daphnia magna
2014/4/21
Daphnia magna were fed phosphorus-sufficient (+P) and P-deficient (2P) green algae Chlamydomonas reinhardtii (carbon : phosphorus ratio of C: P = 90 and 930 in molar, respectively) for 5 d to produce ...
Diel carbon monoxide cycling in the upper Sargasso Sea near Bermuda at the onset of spring and in midsummer
Diel carbon monoxide cycling the upper Sargasso Sea Bermuda spring in midsummer
2014/4/21
Rapid bio-oxidation of carbon monoxide (CO), a photoproduct of dissolvedorganic matter, results in diel cycles reflecting photochemical–biogeochemical–physical interactions. These cycles were characte...
Tracking carbon flow in a 2-week-old and 6-week-old stream biofilm food web
carbon flow a 2-week-old 6-week-old stream biofilm food web
2014/4/21
We studied the carbon flow of an allochthonous carbon source (sucrose) in abiofilm food web using stable isotope analysis and lipid biomarkers. Initial biofilms were grown for 2 weeks in a third order...
Acclimation to elevated carbon dioxide and ultraviolet radiation in the diatom Thalassiosira pseudonana: Effects on growth, photosynthesis, and spectral sensitivity of photoinhibition
Acclimation to elevated carbon dioxide ultraviolet radiation the diatom Thalassiosira pseudonana on growth photosynthesis spectral sensitivity photoinhibition
2014/4/21
We studied the effects of elevated CO2 concentrations (0.03%vs. 0.1%) on light absorption, membrane permeability, growth, and carbon fixation under photosynthetically active radiation (PAR) and ultrav...
Food-web structure and planktonic predator–prey relationships in two eutrophic European lakes: Stability constraints on carbon fluxes
Food-web structure planktonic predator–prey relationships two eutrophic European lakes Stability constraints carbon fluxes
2014/4/21
The food webs in two eutrophic European lakes were analyzed with respect totheir stability characteristics.The food web during the summer in Lake Nesjøvatn (Norway) appeared to be stable; its res...
Winter respiration of allochthonous and autochthonous organic carbon ina subarctic clear-water lake
Winter respiration allochthonous autochthonous organic carbon subarctic clear-water lake
2014/4/21
We studied a small subarctic lake to assess the magnitude of winter respiration and the organic carbon (OC) source for this respiration. The concentration and stable isotopic composition (d13 C) of di...
Scale-dependent carbon : nitrogen : phosphorus seston stoichiometry in marine and freshwaters
Scale-dependent carbon nitrogen phosphorus seston stoichiometry fresh waters
2014/4/21
The classical Redfield ratio of carbon106: nitrogen16: phosphorus1is a cornerstone of biogeochemistry. With the use of.2,000 observations of the chemistry of particulate matter from small and large la...
Excess carbon in aquatic organisms and ecosystems: Physiological, ecological, and evolutionary implications
Excess carbon aquatic organisms ecosystems Physiological ecological evolutionary implications
2014/4/18
Cells and organisms, both autotrophs and heterotrophs, commonly face imbalanced access to and uptake of elements relative to their requirements. C is often in excess relative to key nutrient elements ...
Carbon dioxide fixation in the dark by photosynthetic bacteria in sulfide-rich stratified lakes with oxic–anoxic interfaces
Carbon dioxide fixation in the dark photosynthetic bacteria sulfide-rich stratified lakes oxic–anoxic interfaces
2014/4/18
Carbon fixation was analyzed in a series of stratified lakes with oxygen–sulfide interfaces following14 Cbicarbonate incorporation into oxygenic phototrophic, anoxygenic phototrophic (photosynthetic s...
Temporal variations in organic carbon species and fluxes from the Chena River, Alaska
Temporal variations organic carbon species fluxes Chena River Alaska
2014/4/18
Water samples were collected biweekly from the Chena River, Alaska, during 2005–2006 for analysis of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), total dissolved carbohydrate (TCH...