搜索结果: 1-15 共查到“海洋地质学 organic carbon”相关记录17条 . 查询时间(0.297 秒)
Physical responses of small temperate lakes to variation in dissolved organic carbon concentrations
dissolved organic carbon concentrations lakes
2014/4/2
We used a mechanistic physical model to examine the effect of variability in dissolved organic carbon (DOC)
concentrations on the physical properties of small temperate lakes. The model was validated...
Mineralization pathways in lake sediments with different oxygen and organic carbon supply
Mineralization pathways lake sediments different oxygen organic carbon supply
2014/4/17
The intensity and pathways of mineralization of sedimentary organic matter were investigated in eutrophic Lake Zug, Switzerland. In a depth transect (25–180 m) from oxic to anoxic bottom water we reco...
Organic carbon burial efficiency in lake sediments controlled by oxygen exposure time and sediment source
Organic carbon burial efficiency lake sediments controlled oxygen exposure time sediment source
2014/4/17
We compared the burial efficiency of organic carbon (buried OC : depositedOC) in a diverse set of 27 different sediments from 11 lakes, focusing on the potential effects of organic matter source, oxyg...
Effects of fetch and dissolved organic carbon on epilimnion depth and light climate in small forest lakes in southern Sweden
ight climate epilimnion depth
2014/4/16
We sampled small (0.03 to 3.3 km2
surface area) forest lakes in southern Sweden during two summers to
investigate how concentration of dissolved organic carbon (DOC) and lake size influence epilimni...
Contribution of river-borne soil organic carbon to the Gulf of Lions (NW Mediterranean)
river-borne soil organic Gulf of Lions
2014/4/16
We determined the spatial distribution patterns of the Branched and Isoprenoid Tetraether (BIT) index, a
specific proxy of riverborne soil organic carbon (OC) input from land to the ocean, by analyzi...
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...
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...
Patterns and regulation of dissolved organic carbon: An analysis of 7,500 widely distributed lakes
Patterns regulation dissolved organic carbon 7,500 widely distributed lakes
2014/4/22
Dissolved organic carbon (DOC) is a key parameter in lakes that can affect numerous features, including microbial metabolism, light climate, acidity, and primary production. In an attempt to understan...
Photochemical production of dissolved organic carbon from resuspended sediments
Photochemical production dissolved organic carbon resuspended sediments
2014/5/5
A series of controlled photolysis experiments using simulated sunlight was conducted in the presence and absence of estuarine bottom sediments to address the role of sediment resuspension on dissolved...
Significance and mechanisms of photosynthetic production of dissolved organic carbon in a coastal eutrophic ecosystem
Signifi cance mechanisms dissolved organic
2014/5/19
We have determined the seasonal (July 2001–July 2002) and vertical variability in the photosynthetic production
of dissolved organic carbon (DOCp) and particulate organic carbon (POCp) in a coastal u...
Use of Keeling plots to determine sources of dissolved organic carbon in nearshore and open ocean systems
dissolved organic carbon ocean systems
2014/5/14
Abstract—We apply a Keeling mixing model commonly used in atmospheric sciences to oceanic
dissolved organic carbon (DOC)
14
C and concentrations to demonstrate that DOC distribution across
spatial...
Regional comparisons of watershed determinants of dissolved organic carbon in temperate lakes from the Upper Great Lakes region and selected regions globally
Regional comparisons watershed determinants dissolved organic carbon in temperate lakes Upper Great Lakes region selected regions globally
2014/5/22
We analyzed how dissolved organic carbon (DOC) concentration in lakes of the North American temperate forest (Upper Great Lakes region) is related to nine catchment characteristics (lake area, lake pe...
Ultraviolet radiation blocks the organic carbon exchange between the dissolved phase and the gel phase in the ocean
Ultraviolet radiation blocks the dissolved phase
2014/5/21
Dissolved organic carbon (DOC) is one of the major reservoirs of active organic carbon on Earth. Although the
bulk of the marine DOC pool is largely composed of small refractory polymeric material, n...
Does 234Th/238U disequilibrium provide an accurate record of the export flux of particulate organic carbon from the upper ocean?
234Th/238U disequilibrium provide accurate record particulate organic carbon the upper ocean
2014/5/20
The magnitude of the flux of biogenic particulate organic carbon (POC) exported from the surface waters of the world ocean and remineralized at depth is critical to constraining models of the global c...
Lake metabolism: Relationships with dissolved organic carbon and phosphorus
Lake metabolism dissolved organic carbon phosphorus
2014/5/20
Recent literature has suggested that for many lakes and rivers, the respiratory breakdown of organic matter (R) exceeds production of organic matter by photosynthesis (gross primary production [GPP]) ...