搜索结果: 1-13 共查到“海洋化学 nitrogen”相关记录13条 . 查询时间(0.031 秒)
Species and δ15N Signatures of Nitrogen Transformations in the Suboxic Zone of the Black Sea
Species and δ15N Signatures Nitrogen Transformations Suboxic Zone of the Black Sea
2015/7/27
Nitrogen is an essential nutrient for living systems in the ocean; it is a component of proteins, chlorophyll, and nucleic acids. In the oceans, nitrogen exists as a dissolved gas (N2), dissolved orga...
Study resolves controversy over nitrogen's ocean 'exit strategies'
Study resolves controversy over nitrogen's ocean 'exit strategies'
2014/4/16
A decades-long debate over how nitrogen is removed from the ocean may now be settled by new findings from researchers at Princeton University and their collaborators at the University of Washington.
Diversity trumps acidification: Lack of evidence for carbon dioxide enhancement of Trichodesmiumcommunity nitrogen or carbon fixation at Station ALOHA
Diversity trumps acidification Lack of evidence carbon dioxide enhancement Trichodesmiumcommunity nitrogen carbon fixation Station ALOHA
2014/4/2
We conducted 11 independent short-term carbon dioxide (CO2) manipulation experiments using colonies of the filamentous cyanobacteria Trichodesmiumisolated on three cruises in the North Pacific Subtrop...
The Mekong River plume fuels nitrogen fixation and determines phytoplankton species distribution in the South China Sea during low and high discharge season
The Mekong River plume fuels nitrogen fixation determines phytoplankton species distribution the South China Sea low and high discharge season
2014/4/17
The influence of the Mekong River (South China Sea) on N2 fixation and phytoplankton distribution was investigated during the lowest- and highest-discharge seasons (April 2007 and September 2008, resp...
A discrepancy between predictions of saturating nutrient uptake models and nitrogen-to-phosphorus stoichiometry in the surface ocean
saturating nutrient uptake models nitrogen-to-phosphorus stoichiometry the surface ocean
2014/4/17
We derive a simple prediction about euphotic zone N : P stoichiometry from a large class of models that use saturating nutrient uptake functions to characterize N and P acquisition by phytoplankton. T...
Scale-dependent carbon : nitrogen : phosphorus seston stoichiometry in marine and freshwaters
Scale-dependent carbon nitrogen phosphorus seston stoichiometry fresh waters
2014/4/21
The classical Redfield ratio of carbon106: nitrogen16: phosphorus1is a cornerstone of biogeochemistry. With the use of.2,000 observations of the chemistry of particulate matter from small and large la...
Seasonal and spatial variation in the organic carbon and nitrogen concentration and their stable isotopic composition in Zostera marina (Denmark)
Seasonal and spatial variation organic carbon nitrogen concentration their stable isotopic composition Zostera marina
2014/5/9
The spatial and seasonal variation in the concentration and stable isotopic composition of carbon and nitrogen was studied in Zostera marina (eelgrass) meadows in Roskilde Fjord and Øresund, Denm...
Growth rates of Antarctic krill, Euphausia superba: Comparison of the instantaneous growth rate method with nitrogen and phosphorus stoichiometry
Growth rates of Antarctic krill Euphausia superba Comparison of the instantaneous growth rate method with nitrogen phosphorus stoichiometry
2014/5/19
Zooplankton growth rates are hard to measure directly, and proxy measurements are desirable to encompass the variety of species and scales of interest. The growth rate hypothesis of stoichiometric the...
Interannual variation of the isotopic composition of sedimenting organic carbon and nitrogen in Lake Lugano: A long-term sediment trap study
Interannual variation isotopic composition sedimenting organic carbon and nitrogen Lake Lugano long-term sediment trap study
2014/5/14
We examined the evolution of δ13C and δ15N of sedimenting particulate organic matter (SPOM) in response to changes in primary productivity, nutrient loading, and plankton dynamics in Lake Lugano betwe...
The role of the picoeukaryote Aureococcus anophagefferens in cycling of marine high-molecular weight dissolved organic nitrogen
picoeukaryote Aureococcus anophagefferens marine high-molecular weight dissolved organic nitrogen
2014/5/21
Environmental evidence suggests that Aureococcus anophagefferens (Pelagophyceae), a eukaryotic picoplankton that blooms in coastal seawaters, can outcompete other organisms because of its ability to u...
Carbon, nitrogen, and phosphorus budgets for a shallow subtropical coastal embayment (Moreton Bay, Australia)
Carbon nitrogen phosphorus shallow subtropical coastal embayment
2014/5/27
Average annual carbon, nitrogen, and phosphorus budgets were constructed for Moreton Bay. Primary production was the dominant source of carbon (by two orders of magnitude), N fixation was the dominant...
Peptide hydrolysis, amino acid oxidation, and nitrogen uptake in communities seasonally dominated by Aureococcus anophagefferens
Peptide hydrolysis amino acid oxidation nitrogen uptake communities seasonally Aureococcus anophagefferens
2014/5/27
Elevated levels of dissolved organic nitrogen (DON) and dissolved inorganic nitrogen (DIN) are among the factors implicated in the initiation of algal blooms. However, the degree to which phytoplankto...
Fine-scale mapping of land-derived nitrogen in coral reefs by d15N in macroalgae
Fine-scale mapping land-derived nitrogen coral reefs d15N in macroalgae
2014/5/26
We measured the C/N ratio and δ15N values of two brown macroalgae — Padina spp. and Dictyota sp., which are distributed over all the subtropical fringing reefs of the Ryukyu Islands, Japan— ...