搜索结果: 1-12 共查到“海洋地球物理学 organic carbon”相关记录12条 . 查询时间(0.337 秒)
Aging of allochthonous organic carbon regulates bacterial production in unproductive boreal lakes
allochthonous organic carbo production in unproductive
2014/4/18
We calculated average aquatic dissolved organic carbon (DOC) age (the time span from soil discharge to
observation) in water from the inlets and outlets of two unproductive Swedish lakes at different...
Microbially induced flocculation of allochthonous dissolved organic carbon in lakes
Microbially induced allochthonous dissolved organic carbon
2014/4/17
The flocculation of allochthonous dissolved organic carbon (DOC) in lakes was investigated in a series of
laboratory experiments. Flocculation was enhanced by increased temperatures, and addition of ...
Effects of climate on organic carbon and the ratio of planktonic to benthic primary producers in a subarctic lake during the past 45 years
organic carbon benthic primary producers
2014/4/17
The effects of climatic variables on lake-water total organic carbon (TOC) concentrations and benthic and
pelagic primary producers during the past 45 yr were assessed using the sediment records of t...
Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean
Determining net dissolved organic hydrographically complex western Arctic Ocean
2014/4/22
Each spring and summer, the Chukchi Sea in the western Arctic Ocean experiences a short but intense
phytoplankton bloom that is controlled by sea ice cover, nutrient availability, and river runoff. D...
The stoichiometry of dissolved organic carbon, nitrogen, and phosphorus release by a planktonic grazer, Daphnia
dissolved organic carbon nitrogen phosphorus release
2014/5/19
We examined the relationship between Daphnia release rates and ratios of dissolved organic carbon (DOC),
nitrogen (N), and phosphorus (P) and the elemental composition of algal food. We constructed a...
Bacterioplankton distribution and production in the bathypelagic ocean: Directly coupled to particulate organic carbon export?
Bacterioplankton distribution production
2014/5/20
A recently published evaluation of bacterioplankton abundance and productivity in the bathypelagic North Pacific
suggests that these properties are generally coupled with particulate organic ca...
Control of zooplankton dependence on allochthonous organic carbon in humic and clear-water lakes in northern Sweden
zooplankton dependence allochthonous organic carbon
2014/5/20
We compared the stable carbon isotopic composition (d
13
C) of crustacean zooplankton with that of potential
carbon sources in 15 lakes in northern Sweden with different dissolved organic carbon (D...
Dissolved organic carbon production and consumption in anoxic marine sediments: A pulsed-tracer experiment
consumption anoxic marine sediments
2014/5/30
The degradation of phytoplankton and seagrass organic carbon (OC) in sulfate-reducing (SR) and methaneproducing (MP) sediments was tracked by measuring concentrations of particulate OC (POC), hydrolys...
Microbial degradation of organic carbon and nitrogen on diatom aggregates
organic carbon nitrogen
2014/5/30
The major pathways of transformation of particulate organic matter by heterotrophic bacteria are respiration and
production of new biomass. Until today only a limited number of studies have measured ...
Production of colloidal organic carbon and trace metals by phytoplankton decomposition
colloidal organic carbon phytoplankton decomposition
2014/5/30
Colloids are important intermediates and can considerably influence the biogeochemical cycling of organic carbon
and trace metals in aquatic systems. Previous studies have determined the releas...
Determination of pore-water dissolved organic carbon fluxes from Mexican margin sediments
pore-water dissolved organic carbon fl uxes Mexican margin sediments
2014/5/30
Sediment dissolved organic carbon (DOC) fluxes were determined in the oxygen minimum zone along the northwestern Mexican margin using five different methods: in situ benthic chambers, on-d...
Effects of land use and riparian flowpath on delivery of dissolved organic carbon to streams
riparian fl owpath dissolved organic carbon
2014/5/30
A set of near-stream flowpaths in pasture, native forest and exotic pine plantations in New Zealand was sampled
to describe differences in dissolved organic carbon (DOC). The quantity and bioav...