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Net nitrification rate and presence of Nitrosospira cluster 2 in acid coniferous forest soils appear to be tree species specific |
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| Authors: | RA Nugroho WFM Röling HA Verhoef |
| Institution: | a Faculty of Earth and Life Sciences, Institute of Ecological Science, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands b Molecular Cell Physiology, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands c Department of Geochemistry, Faculty of Earth Sciences, University Utrecht, Budapestlaan 4, 3584 CD Utrecht, The Netherlands |
| Abstract: | The impact of four coniferous tree species and their corresponding soil factors on N transformation rates and presence of ammonia-oxidising bacteria (AOB) was studied in an acid pine forest soil (Appelscha, The Netherlands). Pine soil had a relatively low net nitrification rate, while spruce, fir and larch soils showed high net nitrification rates. 16S rRNA and amoA sequences were only found in soils with high nitrification rates and belonged solely to Nitrosospira cluster 2. We conclude that tree species, possibly through their effects on soil C/N ratios, determines the presence of Nitrosospira cluster 2. Whenever AOB are present, however, the AOB community composition appears to be similar. |
| Keywords: | Acid forest soils Coniferous tree species C/N ratios N transformation rates Ammonia-oxidising bacteria Nitrosospira cluster 2 |
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