搜索结果: 1-15 共查到“海洋生物学 Cycling”相关记录31条 . 查询时间(0.187 秒)
Revealing the Ocean's Hidden Fertilizer Marine Plants Play Major Role in Phosphorus Cycling
Ocean's Hidden Fertilizer Marine Plants Phosphorus Cycling
2015/5/25
Phosphorus is one of the most common substances on Earth. An essential nutrient for every living organism—humans require approximately 700 milligrams per day—we are rarely concerned about consuming en...
Microscopic organism plays a big role in ocean carbon cycling, Scripps scientists discover
Microscopic organism big role ocean carbon cycling Scripps scientists discover
2014/5/13
It’s broadly understood that the world’s oceans play a crucial role in the global-scale cycling and exchange of carbon between Earth’s ecosystems and atmosphere. Now scientists at Scripps Institution ...
Carbon cycling hysteresis in permeable carbonate sands over a diel cycle: Implications for ocean acidification
Carbon cycling hysteresis permeable carbonate sands over a diel cycle ocean acidification
2014/4/2
Dissolved inorganic carbon, dissolved oxygen, H+, and alkalinity fluxes from permeable carbonate sediments at Heron Island (Great Barrier Reef) were measured over one diel cycle using benthic chambers...
Characterization of alkaline phosphatase activity in the North and South Pacific Subtropical Gyres: Implications for phosphorus cycling
alkaline phosphatase activity iin the North South Pacific Subtropical Gyres:phosphorus cycling
2014/4/8
We characterized alkaline phosphatase (AP) activity (APA) and report AP kinetic parameters in the North and South Pacific Subtropical Gyres (NPSG and SPSG, respectively) to evaluate the relative impor...
The cold-water coral community as a hot spot for carbon cycling on continental margins: A food-web analysis from Rockall Bank (northeast Atlantic)
The cold-water coral community carbon cycling continental margins: A food-web analysis Rockall Bank
2014/4/17
We present a quantitative food-web analysis of the cold-water coral community, i.e., the assembly of living corals, dead coral branches and sediment beneath, associated with the reef-buildingLophelia ...
Trace metal cycling in the surface water of the South China Sea: Vertical fluxes, composition, and sources
Trace metal cycling the surface water the South China Sea: Vertical fluxes composition sources
2014/4/16
We deployed floating traps in the surface waters of the South China Sea on four occasions at depths of 30 m,100 m, and 160 m from 2006 to 2007 to quantify vertical metal fluxes in the surface water an...
Direct determination of nitrogen cycling rates and pathways in Arctic fjord sediments (Svalbard, Norway)
pathways nitrogen cycling rates
2014/4/16
Results from a study of benthic nitrogen cycling in two Arctic fjords are presented. Intact sediment core
incubations were used to quantify net fluxes of dissolved inorganic nitrogen, organic nitroge...
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
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 ...
Nitrogen cycling in a deep ocean margin sediment (Sagami Bay, Japan)
a deep ocean margin sediment Nitrogen cycling
2014/4/18
On the basis of in situ NO{
3 microprofiles and chamber incubations complemented by laboratory-based
assessments of anammox and denitrification we evaluate the nitrogen turnover of an ocean margin s...
Denitrification and nitrous oxide cycling within the upper oxycline of the eastern tropical South Pacific oxygen minimum zone
Denitrification nitrous oxide cycling
2014/4/17
One of the shallowest, most intense oxygen minimum zones (OMZs) is found in the eastern tropical South
Pacific, off northern Chile and southern Peru. It has a strong oxygen gradient (upper oxycline) ...
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 ...
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...
Mangrove tannins in aquatic ecosystems: Their fate and possible influence on dissolved organic carbon and nitrogen cycling
Mangrove tannins in aquatic ecosystems Their fate and possible influence on dissolved organic carbon nitrogen cycling
2014/4/18
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 ...
Isotopic heterogeneity and cycling of organic nitrogen in the oligotrophic ocean
Isotopic heterogeneity cycling of organic nitrogen oligotrophic ocean
2014/4/22
We measured the nitrogen (N) isotopic composition (δ15N) of a large set (n = 38) of high-molecular-weight (HMW) dissolved organic nitrogen (DON) samples isolated from the tropical and subtropical Nort...
Microzooplankton dominate carbon flow and nutrient cycling in a warm subtropical freshwater lake
Microzooplankton carbon flow nutrient cycling warm subtropical freshwater lake
2014/4/22
In a series of grazer-gradient and dilution microcosm experiments, we compared grazing and nutrient mineralization by naturally co-existing crustacean and microzooplankton assemblages from mesoeutroph...