Results 21 to 30 of about 54,026 (308)
Dinitrogen fixation in aphotic oxygenated marine environments
Frontiers in Microbiology, 2013 We measured N2 fixation rates from oceanic zones that have traditionally been ignored as sources of biological N2 fixation; the aphotic, fully oxygenated, nitrate (NO3-)-rich, waters of the oligotrophic Levantine Basin (LB) and the Gulf of Aqaba (GA). N2
Eyal eRahav +7 more
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Light-limited growth rate modulates nitrate inhibition of dinitrogen fixation in the marine unicellular cyanobacterium Crocosphaera watsonii. [PDF]
PLoS ONE, 2014 Biological N2 fixation is the dominant supply of new nitrogen (N) to the oceans, but is often inhibited in the presence of fixed N sources such as nitrate (NO3-).
Nathan S Garcia, David A Hutchins
doaj +1 more source
Science, 2012 Microbiology![Figure][1] CREDITS (TOP AND MIDDLE): BURKHARD BUDEL; (BOTTOM) BETTINA WEBER Lichen-covered buildings, rocks, and trees are a common sight. Indeed, if they remain static for long enough, or simply grow slowly, most objects on Earth's surface become coated by cyanobacteria, algae, fungi, lichens, and bryophytes. These coatings are called
openaire +1 more source
Nitrogen fixation in the western English Channel (NE Atlantic Ocean) [PDF]
, 2009 In temperate Atlantic waters (18.8 to 20.1°C), biological nitrogen fixation has beendemonstrated by 2 independent measurements: 15N-N2 incorporation and nifH identification in theDNA and expressed messenger RNA (mRNA).
Kelly-Gerreyn, BA +5 more
core +1 more source
mBio, 2015 The ability to reduce atmospheric nitrogen (N2) to ammonia, known as N2 fixation, is a widely distributed trait among prokaryotes that accounts for an essential input of new N to a multitude of environments.
Mikkel Bentzon-Tilia +3 more
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Interactions between CCM and N2 fixation in Trichodesmium [PDF]
Photosynthesis Research, 2010 In view of the current increase in atmospheric pCO(2) and concomitant changes in the marine environment, it is crucial to assess, understand, and predict future responses of ecologically relevant phytoplankton species. The diazotrophic cyanobacterium Trichodesmium erythraeum was found to respond strongly to elevated pCO(2) by increasing growth ...
Kranz, Sven A. +2 more
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Molecular evidence for sediment nitrogen fixation in a temperate New England estuary [PDF]
PeerJ, 2016 Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacing nitrogen fixation (N2-fixation). However, recent work suggests that we have potentially underestimated the importance of heterotrophic sediment N2 ...
Silvia E. Newell +3 more
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Free atmospheric CO2 enrichment increased above ground biomass but did not affect symbiotic N2-fixation and soil carbon dynamics in a mixed deciduous stand in Wales [PDF]
, 2011 Through increases in net primary production (NPP), elevated CO2 is hypothesizes to increase the amount of plant litter entering the soil. The fate of this extra carbon on the forest floor or in mineral soil is currently not clear.
A. R. Smith +14 more
core +1 more source
Direct biological fixation provides a freshwater sink for N2O
Nature Communications, 2023 Nitrous oxide (N2O) is a potent climate gas, with its strong warming potential and ozone-depleting properties both focusing research on N2O sources. Although a sink for N2O through biological fixation has been observed in the Pacific, the regulation of ...
Yueyue Si +5 more
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Moss-cyanobacteria associations as biogenic sources of nitrogen in boreal forest ecosystems
Frontiers in Microbiology, 2013 The biological fixation of atmospheric nitrogen (N) is a major pathway for available N entering ecosystems. In N-limited boreal forests, a significant amount of N2 is fixed by cyanobacteria living in association with mosses, contributing up to 50 % to ...
Kathrin eRousk +2 more
doaj +1 more source