Articles | Volume 11, issue 21
https://doi.org/10.5194/bg-11-6003-2014
https://doi.org/10.5194/bg-11-6003-2014
Research article
 | 
05 Nov 2014
Research article |  | 05 Nov 2014

Effects of drought on nitrogen turnover and abundances of ammonia-oxidizers in mountain grassland

L. Fuchslueger, E.-M. Kastl, F. Bauer, S. Kienzl, R. Hasibeder, T. Ladreiter-Knauss, M. Schmitt, M. Bahn, M. Schloter, A. Richter, and U. Szukics

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Allison, S. D. and Martiny, J. B. H.: Resistance, resilience, and redundancy in microbial communities, Proceedings of the national academy of sciences of the USA, 105, 11512–11519, 2008.
Alves, R., Wanek, W., Zappe, A., Richter, A., Svenning, M., Schleper, C., and Urich, T.: Nitrification rates in Arctic soils are associated with functionally distinct populations of ammonia-oxidizing archaea, The ISME J., 7, 1620–1631, 2013.
Auyeung, D. S. N., Suseela, V., and Dukes, J.: Warming and drought reduce temperature sensitivity of nitrogen transformations, Glob. Change Biol., 19, 662–676, 2013.
Bahn, M., Knapp, M., Garajova, Z., Pfahringer, N., and Cernusca, A.: Root respiration in temperate mountain grasslands differing in land use, Glob. Change Biol., 12, 995–1006, 2006.
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Short summary
In mountain grasslands drought has distinct transient effects on soil nitrogen cycling and bacterial and archaeal ammonia-oxidizers (AOB and AOA), which could have been related to a niche differentiation of these two groups at increasing NH4+ levels. However, the effective strength of drought was modulated by the level of grassland management.
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