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Climate variation, carbon flux, and bioturbation in the abyssal North Pacific
Climate variation carbon flux bioturbation abyssal North Pacific
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2014/4/17
We hypothesized that seasonal and interannual climate-mediated changesin particulate organic carbon (POC) flux would affect bioturbation and ultimately the sequestration of organic carbon in the deep ...
Carbon sequestration and zooplankton lunar cycles: Could we be missing a major component of the biological pump?
Carbon sequestration zooplankton lunar cycle
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2014/4/17
The plankton outburst during the so-called late winter bloom in subtropical waters was studied in relation to
lunar illumination in the Canary Island waters. Nutrient enrichment by mixing and dust de...
Role of sulfate reduction and methane production by organic carbon degradation in eutrophic fjord sediments (Limfjorden, Denmark)
Role of sulfate reduction methane production organic carbon degradation eutrophic fjord sediments
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2014/4/17
The anaerobic mineralization of buried organic matter through sulfate reduction and methanogenesis was studied in 2-m-long piston cores of organic-rich, silty-clay sediment from two sites in Limfjorde...
Regulation of spatial and temporal variability of carbon flux in six hard-water lakes of the northern Great Plains
Regulation of spatial temporal variability carbon flux six hard-water lakes northern Great Plains
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2014/4/17
Six hard-water lakes were sampled May-August for 14 yr in a 52,000 km2 catchment to identify the mechanisms that regulate the spatial and temporal variability of net atmospheric exchange of CO2 of lak...
Natural isotopic composition of carbon (d13C) correlates with colony size in the planktonic cyanobacterium Gloeotrichia echinulata
Natural isotopic composition of carbon d13C correlates with colony size planktonic cyanobacterium Gloeotrichia echinulata
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2014/4/18
To assess variability in carbon isotope signatures (δ13C) between and within populations under natural conditions, with a particular emphasis on colony size, we repeatedly collected planktonic colonie...
Benthic biogeochemical cycling, nutrient stoichiometry, and carbon and nitrogen mass balances in a eutrophic freshwater bay
Benthic biogeochemical cycling nutrient stoichiometry carbon and nitrogen mass balances eutrophic freshwater bay
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2014/4/18
Green Bay, while representing only ~7% of the surface area and ~1.4% of the volume of Lake Michigan, contains one-third of the watershed of the lake, and receives approximately one-third of the total ...
Incorporation and burial of carbon from settling cyanobacterial blooms by deposit-feeding macrofauna
Incorporation and burial of carbon settling cyanobacterial blooms deposit-feeding macrofauna
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2014/4/21
Summer blooms of filamentous, nitrogen-fixing cyanobacteria are typical of the Baltic Sea, and recent findings indicate that cyanobacteria may be an important food source for the benthos below the eup...
A comparative study of carbon dioxide degassing in river- and marine-dominated estuaries
A comparative study of carbon dioxide degassing in river marine-dominated estuaries
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2014/4/21
The partial pressure of carbon dioxide (pCO2), concentration of total dissolved inorganic carbon, and total alkalinity were measured at both high tide and low tide in the surface water of three Georgi...
Major bacterial contribution to the ocean reservoir of detrital organic carbon and nitrogen
bacterial contribution the ocean reservoir detrital organic carbon nitrogen
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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
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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
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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 ...
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
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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
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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...
Excess carbon in aquatic organisms and ecosystems: Physiological, ecological, and evolutionary implications
Excess carbon aquatic organisms ecosystems Physiological ecological evolutionary implications
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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
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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...