Results 81 to 90 of about 14,221 (217)

Benthic Dinitrogen Fixation Traversing the Oxygen Minimum Zone Off Mauritania (NW Africa)

Frontiers in Marine Science, 2017
Despite its potential to provide new nitrogen (N) to the environment, knowledge on benthic dinitrogen (N2) fixation remains relatively sparse, and its contribution to the marine N budget is regarded as minor.
Jessica Gier, Carolin R. Löscher, Andrew W. Dale, Stefan Sommer, Ulrike Lomnitz, Tina Treude, Tina Treude   +6 more
doaj   +1 more source

Nitrogen fixation and soil nitrogen in organic ley arable rotations [PDF]

, 2002
This report was presented at the UK Organic Research 2002 Conference. Nitrogen (N) fixation in a white clover/ryegrass mixture was measured in 1,2,3 and 4-year-old organically managed leys during 2000.
Atkinson, David, Rees, Robert, Sanders, Ian, Watson, Christine   +3 more
core  

The Seasonal Impact of the Island Mass Effect on Coastal Biogeochemistry and Phytoplankton Assemblage: The Case of the Tropical and Volcanic Island of Guadeloupe (French West Indies)

Journal of Geophysical Research: Oceans, Volume 131, Issue 4, April 2026.
Abstract The Island Mass Effect (IME) in tropical regions remains understudied, despite its potential to fertilize oligotrophic oceanic gyres and impact on higher trophic levels. Guadeloupe provides an ideal case study of IME due to its diverse nutrient sources, dual exposure to the Caribbean Sea on the western coast and Atlantic Ocean on the eastern ...
Emma Moreau, Marie Boye, Pierre‐Yves Pascal, Monique Messié   +3 more
wiley   +1 more source

The synthesis and characterization of new higher nuclearity arene-ruthenium-sulfur clusters : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Chemistry at Massey University, New Zealand [PDF]

, 1999
This thesis describes a project investigating the synthesis and characterization of new higher nuclearity arene-ruthenium-sulfur clusters and arene-ruthenium-nitrogen complexes.
Guo, Libei
core  

Heterocyst placement strategies to maximize growth of cyanobacterial filaments

, 2012
Under conditions of limited fixed-nitrogen, some filamentous cyanobacteria develop a regular pattern of heterocyst cells that fix nitrogen for the remaining vegetative cells.
Aidan I Brown, Andrew D Rutenberg, Brown A I, Fogg G E, Gibson C E, Herrero A, Popa R, Powell E O, Risser D D, Stumm W, Wetzel R G   +10 more
core   +1 more source

Development of a Mesoscale‐ and Tide‐Resolving Ocean–Biogeochemistry Model for the Pacific: Tidal Enhancement of the Biological Carbon Pump

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.
Abstract This study presents a new physical‐biogeochemical simulation of the Pacific Ocean that resolves mesoscale dynamics and explicitly includes tidal forcing. The primary objective is to develop and document a modeling framework that serves both as a detailed record of model configuration and forcing preparation, and as a reference for future ...
Pierre Damien, Jeroen Molemaker, Daniel McCoy, Devin Dollery, Jerome Guiet, Daniele Bianchi, James C. McWilliams   +6 more
wiley   +1 more source

Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to N2 fixation in the upper mesopelagic North Pacific Gyre

Communications Biology
Dinitrogen (N2) fixation supports marine life through the supply of reactive nitrogen. Recent studies suggest that particle-associated non-cyanobacterial diazotrophs (NCDs) could contribute significantly to N2 fixation contrary to the paradigm of ...
Christian F. Reeder, Alba Filella, Anna Voznyuk, Arthur Coët, Reece C. James, Tully Rohrer, Angelicque E. White, Léo Berline, Olivier Grosso, Gert van Dijken, Kevin R. Arrigo, Matthew M. Mills, Kendra A. Turk-Kubo, Mar Benavides   +13 more
doaj   +1 more source

Controlled Low‐Oxygen Supply Enables Magnetosome Size Tuning by Uncoupling Magnetite Nucleation and Crystal Growth in Magnetospirillum gryphiswaldense

Microbial Biotechnology, Volume 19, Issue 4, April 2026.
Precisely controlled low‐oxygen conditions uncouple magnetite nucleation from crystal growth in Magnetospirillum gryphiswaldense, enabling targeted tuning of magnetosome size and magnetic properties. This provides a mechanistic basis for rational bioprocess optimization of magnetosome production.
Sophia Tessaro, Markus Schüritz, Valérie Jérôme, Ruth Freitag, René Uebe   +4 more
wiley   +1 more source

Rapid mode switching facilitates the growth of Trichodesmium: A model analysis

iScience
Summary: Trichodesmium is one of the dominant dinitrogen (N2) fixers in the ocean, influencing global carbon and nitrogen cycles through biochemical reactions.
Meng Gao, Jamal Andrews, Gabrielle Armin, Subhendu Chakraborty, Jonathan P. Zehr, Keisuke Inomura   +5 more
doaj   +1 more source

Exploring Legume-Rhizobia Symbiotic Models for Waterlogging Tolerance

Frontiers in Plant Science, 2019
Unexpected and increasingly frequent extreme precipitation events result in soil flooding or waterlogging. Legumes have the capacity to establish a symbiotic relationship with endosymbiotic atmospheric dinitrogen-fixing rhizobia, thus contributing to ...
Chiara Pucciariello, Alexandre Boscari, Andrea Tagliani, Renaud Brouquisse, Pierdomenico Perata   +4 more
doaj   +1 more source