搜索结果: 1-12 共查到“海洋科学 degradation”相关记录12条 . 查询时间(0.105 秒)
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
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...
Stable isotope fractionation during the methanogenic degradation of organic matter in the sediment of an acidic bog lake, Lake Grosse Fuchskuhle
Stable isotope fractionation during the methanogenic degradation of organic matter in the sediment an acidic bog lake Lake Grosse Fuchskuhle
2014/4/16
Lake Grosse Fuchskuhle is an acidic bog lake, which develops an anoxic hypolimnion during the summer season, so that sediment organic matter is degraded anaerobically to CH4and CO2. The d13 C values o...
Composition and degradation of marine particles with different settling velocities in the northwestern Mediterranean Sea
Composition degradation marine particles different settling velocities northwestern Mediterranean Sea
2014/4/22
Settling particles were collected from the Ligurian Sea in the northwestern Mediterranean Sea in May 2003 and separated by elutriation into different settling velocity classes (>230, 115-230, 58-115, ...
Degradation of water quality in Lough Neagh, Northern Ireland, by diffuse nitrogen flux from a phosphorus-rich catchment
Degradation of water quality Lough Neagh Northern Ireland diffuse nitrogen flux phosphorus-rich catchment
2014/4/22
Annually resolved fossil records of nitrogen (N) inputs (as sedimentary δ15N, N content), aquatic production (δ13C, C content), and algal abundance and gross community composition (pigments, nonsilice...
Degradation of organic phosphorus compounds in anoxic Baltic Sea sediments: A 31P nuclear magnetic resonance study
organic phosphorus compounds anoxic Baltic Sea sediments 31P nuclear magnetic resonance
2014/5/5
The composition and abundance of phosphorus extracted by NaOH-ethylenediaminetetraacetic acid from anoxic Northwest Baltic Sea sediment was characterized and quantified using solution 31P nuclear magn...
Microbial production, utilization, and enzymatic degradation of organic matter in the upper trophogenic layer in the pelagial zone of lakes along a eutrophication gradient
Microbial production utilization enzymatic degradation
2014/4/30
The major aim of this study was to evaluate the relationships between the rates of microbial activities (phytoplankton primary production, bacterial secondary production, bacterial utilization of orga...
Tracing the production and degradation of autochthonous fractions of dissolved organic matter using fluorescence analysis
Tracing the production degradation of autochthonous fractions dissolved organic matter fluorescence analysis
2014/5/13
We present the results of a mesocosm experiment investigating the production and utilization of autochthonous dissolved organic matter (DOM) by the plankton community under different inorganic nutrien...
Benthic life in the pelagic: Aggregate encounter and degradation rates by pelagic harpacticoid copepods
Benthic life in the pelagic Aggregate encounter degradation rates pelagic harpacticoid copepods
2014/5/9
We measured field abundances, feeding rates, swimming behavior, and particle colonization of two harpacticoids, the pelagic Microsetella norvegica and the semibenthic , to examine (1) if aggregates ha...
New organic matter degradation proxies: Valid in lake systems?
New organic matter degradation proxies Valid in lake systems
2014/5/19
We determined concentrations and diagenetic state of organic matter in two cores from Lake Zug, Switzerland. To obtain a general picture of organic matter decay in the lake, we measured bulk parameter...
Degradation of dissolved organic matter in oxic and anoxic lake water
Degradation anoxic lake water
2014/5/14
Decades of conflicting results have fueled a debate about how O2
affects organic matter (OM) degradation and
carbon cycling. In a laboratory study, using both OM taken directly from a humic la...
Microbial degradation of peptidoglycan in seawater
Microbial degradation peptidoglycan seawater
2014/5/20
A constituent of the bacterial cell wall, peptidoglycan, has been suggested to be a significant fraction of marine dissolved organic matter, but little is known about its turnover. We measured hydroly...
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 ...