World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Effects of Drought on Nitrogen Turnover and Abundances of Ammonia-oxidizers in Mountain Grassland : Volume 11, Issue 6 (17/06/2014)

By Fuchslueger, L.

Click here to view

Book Id: WPLBN0004005058
Format Type: PDF Article :
File Size: Pages 32
Reproduction Date: 2015

Title: Effects of Drought on Nitrogen Turnover and Abundances of Ammonia-oxidizers in Mountain Grassland : Volume 11, Issue 6 (17/06/2014)  
Author: Fuchslueger, L.
Volume: Vol. 11, Issue 6
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Bauer, F., Ladreiter-Knauss, T., Kienzl, S., Kastl, E., Fuchslueger, L., Hasibeder, R.,...Bahn, M. (2014). Effects of Drought on Nitrogen Turnover and Abundances of Ammonia-oxidizers in Mountain Grassland : Volume 11, Issue 6 (17/06/2014). Retrieved from

Description: Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria. Future climate scenarios suggest an increased frequency of summer drought periods in the European Alpine Region. Drought can affect soil nitrogen (N) cycling, by altering N transformation rates, as well as the abundances of ammonia-oxidizing bacteria and archaea. However, the extent to which drought affects N cycling under in situ conditions is still controversial. The goal of this study was to analyse effects of drought on soil N turnover and ammonia-oxidizer abundances. To this end we conducted a rain-exclusion experiment at two differently managed mountain grassland sites, an annually mown and occasionally fertilized meadow and an abandoned grassland. Soils were sampled before, during and after drought and were analysed for gross rates of N mineralization, microbial uptake of inorganic N, nitrification, and the abundances of bacterial and archaeal ammonia oxidizers based on gene copy numbers of the amoA gene (AOB and AOA, respectively).

Our results showed that the response to drought differed between the two sites. Effects were stronger at the managed meadow, where NH4+ immobilization rates increased and AOA abundances decreased. At the abandoned site gross nitrification and NO3 immobilization rates decreased during drought, while neither AOB, nor AOA abundances were affected. The different responses of the two sites to drought were likely related to site specific differences, such as soil organic matter content, nitrogen pools and absolute soil water content, resulting from differences in land-management. At both sites rewetting after drought had only minor short-term effects on the parameters that had been affected by drought, and seven weeks after the drought no effects of drought were detectable anymore. Thus, our findings indicate that drought can have distinct transient effects on soil nitrogen cycling and ammonia-oxidizer abundances in mountain grasslands and that the effect strength could be modulated by grassland management.

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

Allison, S. D. and Martiny, J. B. H.: Resistance, resilience, and redundancy in microbial communities, P. Natl. Acad. Sci. 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, ISME J., 1–12, doi:10.1038/ismej.2013.35, 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, doi:10.1111/geb.12063, 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, doi:10.1111/j.1365-2486.2006.01144.x, 2006.; Bahn, M., Rodeghiero, M., Anderson-Dunn, M., Dore, S., Gimeno, C., Drösler, M., Williams, W., Ammann, C., Berninger, F., Flechard, C., Jones, S., Blzarolo, M., Kumar, S., Newesely, C., Priwitzer, T., Raschi, A., Siegwolf, R., Susiluoto, S., Tenhunen, J., Wohlfahrt, G., and Cernusca, A.: Soil respiration in European grasslands in relation to climate and assimilate supply, Ecosystems, 11, 1352–1367, doi:10.1007/s10021-008-91298-0, 2008.; Bates, S., Berg-Lyons, D., Caporaso, J., Walters, W., Knight, R., and Fierer, N.: Examining the global distribution of dominant archaeal populations in soil, ISME J., 5, 908–917, doi:10.1038/ismej.2010.171, 2010.; Birch, H.: The effect of soil drying on humus decomposition and nitrogen availability, Plant Soil, 1, 9–31, 1958.; Fierer, N. and Schimel, J.: Effects of drying–rewetting frequency on soil carbon and nitrogen transformations, Soil Biol. Biochem., 34, 777–787, 2002.; Boot, C., Schaeffer, S., and Schimel, J.: Static osmolyte concentrations in microbial biomass during seasonal drought in a California grassland, Soil Biol. Biochem., 57, 356–361, doi:10.1016/j.soilbio.2012.09.005, 2013.; Booth, M., Stark, J., and Rastetter, E.: Controls on nitrogen cycling in terrestrial ecosystems: a synthetic analysis of literature data, Ecol. Monogr., 1–19, doi:10.1890/04-0988, 2005.; Brady, N. C. and Weil, R. R.: Elements of the Nature and Properties of Soils, Prentice Hall, 2009.; Brankatschk, R., Töwe, S., Kleineidam, K., Schloter, M., and Zeyer, J.: Abundances and potential activities of nitrogen cycling microbial communities along a chronosequence of a glacier forefield, ISME J., 5, 1025–1037, doi:10.1038/ismej.2010.184, 2010.; Busso, C. A., Briske, D. D., Olalde-Portugal, V.: Root traits associated with nutrient exploitation following defoliation in three coexisting perennial grasses in a semi-arid savanna, Oikos, 93, 332–342, doi:10.1034/j.1600-0706.2001.930216.x, 2001.; Chen, Y., Bogner, C., Borken, W., Stange, C., and Matzner, E.: Minor response of gross N turnover and N leaching to drying, rewetting and irrigation in the topsoil of a Norway spruce forest, Eur. J. Soil Sci., 62, 709–717, doi:10.1111/j.1365-2389.2011.01388.x, 2011.; Cookson, W., Osman, M., Marschner, P., Abaye, D., Clark, I., Murphy, D., Stockdale, E., and Watson, C.: Controls on soil nitrogen cycling and microbial community composition across land use and incubation temperature, Soil Biol. Biochem., 39, 744–756,


Click To View

Additional Books

  • Asynchronism in Leaf and Wood Production... (by )
  • Threshold of Carbonate Saturation State ... (by )
  • Partitioning of Soil Co2 Efflux in Un-ma... (by )
  • Impact of Dust Deposition on Fe Biogeoch... (by )
  • Response of Respiration and Nutrient Ava... (by )
  • Continuous and Discontinuous Variation i... (by )
  • Contribution of Non-carbonate Anions to ... (by )
  • Recent Changes in the Global and Regiona... (by )
  • Detailed Validation of the Bidirectional... (by )
  • Chlorophyll Signatures and Nutrient Cycl... (by )
  • Effect of Ocean Acidification on the Ben... (by )
  • Picoplankton Diversity in the South-east... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.