Oxygen-limited autotrophic nitrification/denitrification by ammonia oxidisers enables upward motion towards more favourable conditions

Philips, Sarah; Wyffels, Stijn; Sprengers, R; Verstraete, Willy

doi:10.1007/s00253-002-1059-8

Cited by 32 publications

(2 citation statements)

References 51 publications

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“…High concentrations of NO 2 − were detected in A and C soil horizon. In the first horizon, the rate of nitritation is faster than nitratation, resulting in the accumulation of NO 2 − [23,24]. NO 3 − increases with depth and, together with NO 2 − , represents the dominant species of N in the deepest soil horizon (Figure 3).…”

Section: Nitrogen Species Distribution Within the Soil Zonementioning

confidence: 99%

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Determination of Nitrate Migration and Distribution through Eutric Cambisols in an Area without Anthropogenic Sources of Nitrate (Velika Gorica Well Field, Croatia)

Buškulić,

Parlov,

Kovač

et al. 2023

Sustainability

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Natural potential sources of nitrate contamination involve decaying of organic matter, bacterial production, atmospheric deposition, and soil N. The study presents the first results of nitrate distribution and migration through soil horizons of the Eutric Cambisols, one of the most common soils developed in the area of the Zagreb aquifer and situated in an area without potential anthropogenic sources of nitrate (first sanitary protection zone of the Velika Gorica well field). A total of 16 parameters of soil water and 16 parameters of soil were used to conduct statistical techniques and analyse associated factors within the soil zone. The results indicate that in the deepest soil horizon, nitrogen is present mostly as nitrate due to nitrification under aerobic conditions which promote stability and the potential for nitrate transport. It was found that nitrate concentrations are the result of soil N nitrification, caused by a NO3−/Cl− molar ratio higher than 1 and the absence of precipitation isotopic signature. The results also show that within the coarse-grained Eutric Cambisols N primarily migrates to deeper parts of unsaturated zone in the form of nitrate and nitrite.

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Section: Nitrogen Species Distribution Within the Soil Zonementioning

confidence: 99%

“…When the rate of nitritation is faster than nitratation, NO 2 − accumulates. When nitratation takes place more rapidly, only a small amount of NO 2 − is produced [23,24]. The presence of NH 4…”

Section: Introductionmentioning

confidence: 99%

Determination of Nitrate Migration and Distribution through Eutric Cambisols in an Area without Anthropogenic Sources of Nitrate (Velika Gorica Well Field, Croatia)

Buškulić,

Parlov,

Kovač

et al. 2023

Sustainability

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Microbial Resource Management: The Road To Go for Environmental Biotechnology

Verstraete¹,

Wittebolle²,

Heylen³

et al. 2007

Engineering in Life Sciences

129

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The breakthroughs in microbiology have allowed us to come to terms with the microbial resources present in culture collections and in natural environments. The challenge at present is to manage these microbial resources, particularly when one deals with open systems where the dynamics of microbial ecology are predominant. Hence, to properly address the aspects of Microbial Resource Management (MRM), one needs to handle the questions of who is there, who is doing what with whom and how can one adjust, control and/or steer these mixed cultures and communities. It is argued that microbial ecologists and environmental microbiologists need to address a new mind‐set. The Beijerinck axioma that all microorganisms are everywhere should not be presumed to be generally valid. The Darwin based niche assembly concept needs to be supplemented with the neutral theory of Hubbell. The Pareto 80/20 principle is also applicable to the macro‐economies of microbial communities. Finally, the concept of a “stable” microbial community should be replaced by that of a cooperative community continuum. Overall, MRM is at the basis of a number of new developments in domains such as environmental safety and health, renewable energy production, closing environmental cycles and providing new materials. Specific examples such as, for example, pro‐active immuno‐stimulation by means of drinking water, electro‐microbiology, decreasing global warming by implementation of methanotrophs and generation of nano‐biocatalysts are discussed.

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