Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Microbial biomass phosphorus and C/N/P stoichiometry in forest floor and A horizons as affected by tree species

Title data

Zederer, Dan Paul ; Talkner, Ulrike ; Spohn, Marie ; Joergensen, Rainer Georg:
Microbial biomass phosphorus and C/N/P stoichiometry in forest floor and A horizons as affected by tree species.
In: Soil Biology & Biochemistry. Vol. 111 (August 2017) . - pp. 166-175.
ISSN 0038-0717
DOI: https://doi.org/10.1016/j.soilbio.2017.04.009

Abstract in another language

Forest floor horizons contain significant total P stocks, but information on the contribution of microbial biomass P (PMB) and on the controlling factors of this pool is limited. Slightly modified fumigation extraction procedures were used toinvestigate the stoichiometric relationships of PMB to microbial biomass C (CMB) and microbial biomass N (NMB) in the forest floor (L, F, H, and A horizons) at five sites, differing in P availability to trees, under adjacent spruce (Picea abies)and beech (Fagus sylvatica) stands. CMB, NMB, and PMB contents were higher in forest floors under beech than under spruce. Mean stocks of PMB and total P were roughly 27 and 100 kg ha−1 in the forest floor, respectively, but did not differbetween the tree species, due to an increased organic matter accumulation in the forest floor under spruce. This reveals the importance of forest floor horizons and microbial biomass turnover for P nutrition of trees in acidic soils with the humus form moder. C/PMB ratios declined from roughly 26 in L to 13 in F and H horizons, followed by an increase toroughly 17 in A horizons. The range of C/PMB ratios was small at all sites in relation to the wide SOC/total P ratios of the litter used as microbial substrate, indicating a relatively strict homeostatic regulation of the forest floor microbial, mainly fungal biomass stoichiometry.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER140435
Keywords: Forest floor; Fumigation extraction; Bray-I extractable P; Soil microbial biomass; Spruce; Beech
Institutions of the University: Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 12 Jan 2018 07:07
Last Modified: 12 Jan 2018 07:07
URI: https://eref.uni-bayreuth.de/id/eprint/41291