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  The role of soil chemical properties, land use and plant diversity for microbial phosphorus in forest and grassland soils

Sorkau, E., Boch, S., Boeddinghaus, R. S., Bonkowski, M., Fischer, M., Kandeler, E., et al. (2018). The role of soil chemical properties, land use and plant diversity for microbial phosphorus in forest and grassland soils. Journal of Plant Nutrition and Soil Science, 181(2), 185-197. doi:10.1002/jpln.201700082.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-F02D-F Version Permalink: http://hdl.handle.net/21.11116/0000-0001-3ED7-8
Genre: Journal Article

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 Creators:
Sorkau, Elisabeth, Author
Boch, Steffen, Author
Boeddinghaus, Runa S., Author
Bonkowski, Michael, Author
Fischer, Markus, Author
Kandeler, Ellen, Author
Klaus, Valentin H., Author
Kleinebecker, Till, Author
Marhan, Sven, Author
Müller, Jörg, Author
Prati, Daniel, Author
Schöning, Ingo1, Author              
Schrumpf, Marion1, 2, Author              
Weinert, Jan, Author
Oelmann, Yvonne, Author
Affiliations:
1Soil and Ecosystem Processes, Dr. M. Schrumpf, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497776              
2Soil Processes, Dr. Marion Schrumpf, Department Biogeochemical Integration, Dr. M. Reichstein, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1938308              

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 Abstract: Management intensity modifies soil properties, e.g., organic carbon (Corg) concentrations and soil pH with potential feedbacks on plant diversity. These changes might influence microbial P concentrations (Pmic) in soil representing an important component of the P cycle. Our objectives were to elucidate whether abiotic and biotic variables controlling Pmic concentrations in soil are the same for forests and grasslands, and to assess the effect of region and management on Pmic concentrations in forest and grassland soils as mediated by the controlling variables. In three regions of Germany, Schwa¨bische Alb, Hanich-Du¨ n, and Schorfheide-Chorin, we studied forest and grassland plots (each n = 150) differing in plant diversity and land-use intensity. In contrast to controls of microbial biomass carbon (Cmic), Pmic was strongly influenced by soil pH, which in turn affected phosphorus (P) availability and thus microbial P uptake in forest and grassland soils. Furthermore, Pmic concentrations in forest and grassland soils increased with increasing plant diversity. Using structural equation models, we could show that soil Corg is the profound driver of plant diversity effects on Pmic in grasslands. For both forest and grassland, we found regional differences in Pmic attributable to differing environmental conditions (pH, soil moisture). Forest management and tree species showed no effect on Pmic due to a lack of effects on controlling variables (e.g., Corg). We also did not find management effects in grassland soils which might be caused by either compensation of differently directed effects across sites or by legacy effects of former fertilization constraining the relevance of actual practices. We conclude that variables controlling Pmic or Cmic in soil differ in part and that regional differences in controlling variables are more important for Pmic in soil than those induced by management.

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 Dates: 2017-11-042017-11-302018-04
 Publication Status: Published in print
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 Identifiers: Other: BGC2823
DOI: 10.1002/jpln.201700082
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Title: Journal of Plant Nutrition and Soil Science
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-Blackwell
Pages: - Volume / Issue: 181 (2) Sequence Number: - Start / End Page: 185 - 197 Identifier: ISSN: 1436-8730
CoNE: /journals/resource/1436-8730