Results 51 to 60 of about 468 (140)

The Chaetocerosphere: Chaetoceros Species and Associated Prokaryotes in a Coastal Area

Environmental Microbiology Reports, Volume 18, Issue 5, October 2026.
Chaetoceros species maintain recurrent distinct prokaryotic assemblages in their phycosphere. Alphaproteobacteria, Bacteroidetes and Archaea Thermoplasmata and Marine Group II are the most represented in the phycosphere. Bipartite networks highlight strong links between the diatom and specific prokaryotic taxa, especially the chain‐forming species ...
Anna Chiara Trano, Raffaella Casotti, Roberta Piredda   +2 more
wiley   +1 more source

UCYN‐A3, a newly characterized open ocean sublineage of the symbiotic N ₂ ‐fixing cyanobacterium Candidatus Atelocyanobacterium thalassa [PDF]

Environmental Microbiology, 2018
Summary The symbiotic unicellular cyanobacterium Candidatus Atelocyanobacterium thalassa (UCYN‐A) is one of the most abundant and widespread nitrogen (N 2 )‐fixing cyanobacteria in the ocean.
Cornejo‐Castillo, Francisco M., Muñoz‐Marín, Maria del Carmen, Turk‐Kubo, Kendra A., Royo‐Llonch, Marta, Farnelid, Hanna, Acinas, Silvia G., Zehr, Jonathan P.   +6 more
openaire   +4 more sources

Programmed cell death in diazotrophs and the fate of organic matter in the western tropical South Pacific Ocean during the OUTPACE cruise [PDF]

Biogeosciences, 2018
The fate of diazotroph (N2 fixers) derived carbon (C) and nitrogen (N) and their contribution to vertical export of C and N in the western tropical South Pacific Ocean was studied during OUTPACE (Oligotrophy to UlTra-oligotrophy PACific Experiment ...
D. Spungin, N. Belkin, R. A. Foster, M. Stenegren, A. Caputo, M. Pujo-Pay, N. Leblond, C. Dupouy, S. Bonnet, I. Berman-Frank, I. Berman-Frank   +10 more
doaj   +1 more source

Transient Ecological Niches for Diazotrophs in Upwelling Bays

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Diazotrophs, microorganisms capable of fertilizing the ocean through biological nitrogen fixation (BNF), are widespread in the oceans, including upwelling bays. However, their ability to respond to short‐lived upwelling pulses, lasting only a few days, remains poorly understood. To investigate diazotrophy across temporal scales, we analyzed 18 
D. Fernández‐Román, M. Fontela, E. Broullón, H. Farnelid, A. Fernández‐Carrera, B. Fernández Castro, R. A. Foster, S. Martínez‐García, E. Nogueira, B. Reguera, T. Rodríguez‐Ramos, M. M. Varela, E. Velasco‐Senovilla, B. Mouriño‐Carballido   +13 more
wiley   +1 more source

Diazotroph‐Driven 210Po Scavenging Reveals a Potential Radiotracer for Marine Nitrogen Fixation

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract The role of phytoplankton, particularly diazotrophs, in affecting in situ 210Po scavenging has been little investigated. Here, we first report an enhanced 210Po deficit in a cyclonic eddy core relative to its edge in the subtropical Pacific, coinciding with an elevated integrated nitrogen fixation rate (NFR).
Weifeng Yang, Hui Shen, Kuanbo Zhou, Feng Ling, Minfang Zheng   +4 more
wiley   +1 more source

Microbial Controls on Carbon Pump Partitioning in the Subtropical North Atlantic: Stoichiometry and Nutrient Limitation Across a Basin‐Scale Transect

Journal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract The subtropical North Atlantic is a key region for ocean carbon cycling despite its relatively small spatial extent. Here we present a high‐resolution transect (23°–27°N; ∼2° longitude spacing) across the North Atlantic Subtropical Gyre, integrating physical, chemical, and microbial observations to examine how hydrography and nutrient ...
Lukas Marx, Edward Mawji, Thierry Cariou, B. B. Cael, Michelle Hale, Sarah Reynolds   +5 more
wiley   +1 more source

Nitrogen isotopic evidence for a shift from nitrate- to diazotroph-fueled export production in the VAHINE mesocosm experiments [PDF]

Biogeosciences, 2016
In a coastal lagoon with a shallow, 25 m water column off the southwest coast of New Caledonia, large-volume ( ∼  50 m3) mesocosm experiments were undertaken to track the fate of newly fixed nitrogen (N).
A. N. Knapp, S. E. Fawcett, A. Martínez-Garcia, N. Leblond, T. Moutin, S. Bonnet   +5 more
doaj   +1 more source

Dinitrogen fixation and dissolved organic nitrogen fueled primary production and particulate export during the VAHINE mesocosm experiment (New Caledonia lagoon) [PDF]

Biogeosciences, 2015
In the oligotrophic ocean characterized by nitrate (NO3−) depletion in surface waters, dinitrogen (N2) fixation and dissolved organic nitrogen (DON) can represent significant nitrogen (N) sources for the ecosystem.
H. Berthelot, T. Moutin, S. L'Helguen, K. Leblanc, S. Hélias, O. Grosso, N. Leblond, B. Charrière, S. Bonnet   +8 more
doaj   +1 more source

Biotic–Abiotic Hybrid Strategies for Photosynthetic Nitrogen Fixation and Green Ammonia Synthesis

ChemistryEurope, Volume 4, Issue 4, April 2026.
Biotic‐abiotic photosynthetic systems integrate light‐harvesting semiconductors with nitrogenase's selective N2 reduction under ambient conditions, offering a sustainable alternative to conventional ammonia synthesis. Advancing rational interface design, efficient energy‐reaction coupling, and system integration is critical to realizing scalable, solar‐
Minghua Xu, Depeng Meng, Xiaowen Ruan, Sai Kishore Ravi   +3 more
wiley   +1 more source

Succession within the prokaryotic communities during the VAHINE mesocosms experiment in the New Caledonia lagoon [PDF]

Biogeosciences, 2016
N2 fixation fuels  ∼  50 % of new primary production in the oligotrophic South Pacific Ocean. The VAHINE experiment has been designed to track the fate of diazotroph-derived nitrogen (DDN) and carbon within a coastal lagoon ecosystem in a comprehensive ...
U. Pfreundt, F. Van Wambeke, M. Caffin, S. Bonnet, W. R. Hess   +4 more
doaj   +1 more source