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Effect of acetate o...
Effect of acetate on soil respiration, N2O emissions and gross N transformations related to fungi and bacteria in a grassland soil
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Laughlin, Ronald J (författare)
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- Rütting, Tobias, 1977 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences
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Müller, Christoph (författare)
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visa fler...
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Watson, Catherine J (författare)
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Stevens, James R (författare)
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visa färre...
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Applied Soil Ecology. ; 42, s. 25-30
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- Application of organic carbon to grassland in the form of manure or cattle slurry during the growing season is a normal agricultural practice. Under enhanced organic C supply changes in the grassland soil’s internal N cycling and in the microbial community are expected, in particular, the fungi–bacteria ratio. Here we present novel results from a 15N tracing study which aimed to investigate the role of fungi and bacteria in N transformations under enhanced organic C supply. We applied 15N labelled fertiliser to soil in a laboratory incubation with and without acetate addition. Moreover, we used specific microbial inhibitors to selectively inhibit either fungi or bacteria. The data from the incubation were used to calculate gross N transformation rates via 15N tracing models based on Monte Carlo sampling techniques. Our results show that fungi are the predominant organisms that carry out N transformations in a temperate grassland soil. Under enhanced organic C supply, the stimulation of the mineralization – immobilization – turnover and heterotrophic nitrification was predominantly related to fungal activity, indicating that fungi may play an increasingly important role in soils with an enhanced C supply. In addition, we showed that fungi were the dominant organisms for N2O production. Increased fungal activity under enhanced organic C supply may therefore increase N2O emissions from soil and have environmental consequences.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Nyckelord
- Gross N transformation
- Temperate grassland
- Microbial community
- Fungi–bacteria ratio
- 15N
- Nitrous oxide (N2O)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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