Results 31 to 40 of about 465,287 (202)

Effect of intercropping on nodulation and N2-fixation by groundnut [PDF]

, 1983
Nodulation and N2-fixation of groundnuts were studied in pure stands and intercropping systems. Intercropping with maize, sorghum or Pennisetum americanum reduced nodulation and N2-fixation.
Nambiar, P T C, Floyd, C N, Dart, P J, Reddy, M S, Rao, M R   +4 more
core   +1 more source

New hints on nutrients dynamics and their impact on carbon sequestration in the Mediterranean Sea [PDF]

, 2009
In the World Ocean nitrogen and phosphorus cycles are deeply linked to the carbon cycle. As nitrate and phosphate play an important role in controlling biological production, the intensity of atmospheric carbon sequestration is strongly influenced by ...
Ibello, Valeria
core   +1 more source

Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea

Frontiers in Marine Science
Biological dinitrogen (N2) fixation, the energetically expensive conversion of N2 gas to ammonia, plays an essential role in balancing the nitrogen budget in the ocean.
Siqi Wu, Siqi Wu, Xianhui Sean Wan, Xianhui Sean Wan, Moge Du, Moge Du, Xirong Chen, Corday R. Selden, Mar Benavides, Mar Benavides, Mar Benavides, Sophie Bonnet, Carolin R. Löscher, Carolin R. Löscher, M. Robert Hamersley, Margaret R. Mulholland, Xiuli Yan, Shuh-Ji Kao   +17 more
doaj   +1 more source

Incorporating a prognostic representation of marine nitrogen fixers into the global ocean biogeochemical model HAMOCC

Journal of Advances in Modeling Earth Systems, 2017
Nitrogen (N2) fixation is a major source of bioavailable nitrogen to the euphotic zone, thereby exerting an important control on ocean biogeochemical cycling.
Hanna Paulsen, Tatiana Ilyina, Katharina D. Six, Irene Stemmler   +3 more
doaj   +1 more source

Simultaneous Measurements of Dinitrogen Fixation and Denitrification Associated With Coral Reef Substrates: Advantages and Limitations of a Combined Acetylene Assay

Frontiers in Marine Science, 2020
Nitrogen (N) cycling in coral reefs is of key importance for these oligotrophic ecosystems, but knowledge about its pathways is limited. While dinitrogen (N2) fixation is comparably well studied, the counteracting denitrification pathway is under ...
Yusuf C. El-Khaled, Florian Roth, Florian Roth, Florian Roth, Nils Rädecker, Nils Rädecker, Nils Rädecker, Najeh Kharbatia, Burton H. Jones, Christian R. Voolstra, Christian R. Voolstra, Christian Wild   +11 more
doaj   +1 more source

Critical Role of Light in the Growth and Activity of the Marine N2-Fixing UCYN-A Symbiosis

Frontiers in Microbiology, 2021
The unicellular N2-fixing cyanobacteria UCYN-A live in symbiosis with haptophytes in the Braarudosphaera bigelowii lineage. Maintaining N2-fixing symbioses between two unicellular partners requires tight coordination of multiple biological processes ...
Marine Landa, Kendra A. Turk-Kubo, Francisco M. Cornejo-Castillo, Britt A. Henke, Jonathan P. Zehr   +4 more
doaj   +1 more source

Direct and indirect costs of dinitrogen fixation in Crocosphaera watsonii WH8501 and possible implications for the nitrogen cycle

Frontiers in Microbiology, 2012
The recent detection of heterotrophic nitrogen (N2) fixation in deep waters of the southern Californian and Peruvian OMZ questions our current understanding of marine N2 fixation as a process confined to oligotrophic surface waters of the oceans.
Tobias eGroßkopf, Julie eLaRoche
doaj   +1 more source

Methanotrophy Alleviates Nitrogen Constraint of Carbon Turnover by Rice Root-Associated Microbiomes

Frontiers in Microbiology, 2022
The bioavailability of nitrogen constrains primary productivity, and ecosystem stoichiometry implies stimulation of N2 fixation in association with carbon sequestration in hotspots such as paddy soils.
Weiwei Cao, Weiwei Cao, Yuanfeng Cai, Zhihua Bao, Zhihua Bao, Shuwei Wang, Xiaoyuan Yan, Zhongjun Jia, Zhongjun Jia   +8 more
doaj   +1 more source

Leucothrix: Absence of Demonstrable Fixation of N2 [PDF]

Journal of General Microbiology, 1974
Summary: Leucothrix mucor Oersted is a common marine epiphyte, probably ubiquitous on shores around the world. The long, unbranched filaments, which are usually attached to algae, taper somewhat from 2 μm wide at the base to less than 1 μm wide at the distal end. Asexual reproduction is effected by the abstriction and detachment of terminal segments or
T. H. MAGUE, R. A. LEWIN
openaire   +1 more source

Cell-specific nitrogen- and carbon-fixation of cyanobacteria in a temperate marine system (Baltic Sea). [PDF]

, 2016
We analysed N2- and carbon (C) fixation in individual cells of Baltic Sea cyanobacteria by combining stable isotope incubations with secondary ion mass spectrometry (SIMS).
J Whitehouse, Martin, Andersson, B., Olofsson, M., S. Littmann, Klawonn, Isabell,, M M Kuypers, Marcel, I. Klawonn, Klawonn, I., Walve, Jakob, Olofsson, Malin,, Kuypers, M. M. M., B. Andersson, B Svedén, Jennie, M. M. M. Kuypers, Kuypers, M.M.M., Littmann, Sten, Svedén, J.B., Walve, Jakob,, Ploug, Helle,, Ploug, H., Klawonn, Isabell, Barthel Svedén, Jennie,, Littmann, S., Olofsson, Malin, N. Nahar, J. B. Svedén, Nahar, N., Kuypers, M., Nahar, Nurun,, Andersson, Björn,, M. J. Whitehouse, M. Olofsson, Whitehouse, M., H Ploug, Whitehouse, Martin J., Walve, J., J. Walve, Whitehouse, M. J., Sveden, J., Helle Ploug, Lage, Sandra, Ploug, Helle, Malin Olofsson, Sandra Lage, Maria Karlberg, Karlberg, Maria, Lage, Sandra,, Karlberg, Maria,   +47 more
core   +1 more source