Results 61 to 70 of about 465,287 (202)

Nitrogen Fixation and Translocation in Sugarcane [PDF]

open access: yes, 2008
World sugarcane production is increasing rapidly as a biofuel. In some areas in Brazil, sugarcane has been grown continually over very long periods without N fertiliser inputs. Therefore, the occurrence of N fixation has been suspected.
Kuni Sueyoshi   +6 more
core  

Is In-Stream N2 Fixation an Important N Source for Benthic Communities and Stream Ecosystems?

open access: yes, 2008
We evaluate the current state of knowledge concerning the ecosystem- and community-level importance of N2 fixation in streams. We reviewed the literature reporting N2-fixation contributions to stream N budgets and compared in-stream N2-fixation rates to ...
Baker, Michelle A.   +2 more
core   +1 more source

Variable Nitrogen Fixation in Wild Populus.

open access: yesPLoS ONE, 2016
The microbiome of plants is diverse, and like that of animals, is important for overall health and nutrient acquisition. In legumes and actinorhizal plants, a portion of essential nitrogen (N) is obtained through symbiosis with nodule-inhabiting, N2 ...
Sharon L Doty   +8 more
doaj   +1 more source

Nitrogen fixation by a Bangladesh deepwater rice-field calothrix [PDF]

open access: yes, 1990
In order to study the influence on blue-green algal nitrogenase activity of environmental variables in deepwater rice-fields (DWR), a laboratory study was planned on a DWR isolate of Calothrix (D764).
Islam, M.D. Rafiqul, Islam, R.M
core  

Dissolved Organic Matter Influences N2 Fixation in the New Caledonian Lagoon (Western Tropical South Pacific)

open access: yesFrontiers in Marine Science, 2018
Specialized prokaryotes performing biological dinitrogen (N2) fixation (“diazotrophs”) provide an important source of fixed nitrogen in oligotrophic marine ecosystems such as tropical and subtropical oceans. In these waters, cyanobacterial photosynthetic
Mar Benavides   +6 more
doaj   +1 more source

Non-symbiotic N2 fixation is less sensitive to changes in temperature than carbon mineralization in Northern forest soils

open access: yesGeoderma
Northern forests are characterized by low temperatures that play a key role in the whole ecosystem functioning. However, Northern forests are expected to experience the largest temperature increase of all forest biomes in the next decades, which could ...
Eduardo Vázquez, Marie Spohn
doaj   +1 more source

Abundance and calculated biomass of Trichodesmium N2 fixation and nitrate uptake in the upstream Kuroshio and South China Sea basin

open access: yes, 2013
Abundance and calculated biomass of Trichodesmium N2 fixation and nitrate uptake in the upstream Kuroshio and South China Sea ...
Chen, Yuh-ling Lee   +7 more
core   +1 more source

Nitrate leaching in grazed grasslands of different composition and age [PDF]

open access: yes, 2002
In a field experiment at Research Centre Foulum a suction cup technique was used to investigate nitrate leaching from grassland depending on composition (grass-clover or perennial ryegrass), management (grazing or cutting) and age of the swards.
Eriksen, J., Vinther, F.P.
core   +1 more source

Cold seep nitrogen fixation and its potential relationship with sulfur cycling

open access: yesMicrobiology Spectrum
Dinitrogen (N2) fixation is a crucial source of bioavailable nitrogen in carbon-dominated cold seep systems. Previous studies have shown that diazotrophy is not necessarily dependent on sulfate-dependent anaerobic oxidation of methane for energy, and ...
Qiumei Quan   +6 more
doaj   +1 more source

Global Marine N2 Fixation Estimates: From Observations to Models

open access: yesFrontiers in Microbiology, 2018
Fixed nitrogen (N) limits productivity across much of the low-latitude ocean. The magnitude of its inventory results from the balance of N input and N loss, the latter largely occurring in regionally well-defined low-oxygen waters and sediments ...
Angela Landolfi   +3 more
doaj   +1 more source

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