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The project MicroWeb investigates land use effects on the nematode fauna in all forest plots of the three exploratories. The great abundance, coupled with high species and trophic diversity, make nematode a key group in soil food webs. Their communities will be used as indicators for food web conditions and as link between the microbial and faunal web. The work is carried out in cooperation with the projects “Forest Mites” (M. Maraun) and “ForestSoilWeb” (S. Scheu) and complements the below ground faunal analysis. Density and structure of nematode populations are determined and related to their functional roles; key groups in microbial webs (e.g. actinobacteria, fungi, algae) are assessed by lipid biomarkers. Nematodes will serve as entry-level indicators for resource allocation, partitioning and transfer in the micro-food web as modulated by forest land use intensity.


1. Determination of land use effects on structure and function of the micro-food web
Nematodes communities are used as indicators for food web conditions to assign how land use/forest management and the related changes in basal food web resources affect decomposition pathways and energy flux in soil.

2. Linking microbial and faunal food web
Land use effects on the diversity and structure of microbial and microfaunal food webs are linked by determination of whole population lipid profiles for microorganisms and nematodes across forest sites.


Doc
Richter A., Ewald M., Hemmerling C., Schöning I., Bauhus J., Schall P., Ruess L. (2023): Effects of management intensity, soil properties and region on the nematode communities in temperate forests in Germany. Forest Ecology and Management 529, 120675. doi: 10.1016/j.foreco.2022.120675
More information:  doi.org
Doc
Effekte von Landnutzung und Umweltbedingungen auf die Mikrobiota in biologischen Bodenkrusten und im Boden temperater Wälder
Ngosong C., Buse T., Ewald M., Richter A., Glaser K., Schöning I., Ruess L. (2020): Influence of management intensity and environmental conditions on microbiota in biological soil crust and crust-free soil habitats of temperate forests. Soil Biology and Biochemistry 144: 107761. doi: 10.1016/j.soilbio.2020.107761
More information:  doi.org
Doc
Kühn J., Richter A., Kahl T., Bauhus J., Schöning I., Ruess L. (2018): Community level lipid profiling of consumers as a tool for soil food web diagnostics. Methods in Ecology and Evolution 9 (5), 1265-1275. doi: 10.1111/2041-210X.12966
More information:  doi.org
Doc
Richter A., Schöning I., Kahl T., Bauhus J., Ruess L. (2018): Regional environmental conditions shape microbial community structure stronger than local forest management intensity. Forest Ecology and Management 409, 250-259. doi: 10.1016/j.foreco.2017.11.027
More information:  doi.org
Doc
Hoiss B. (2018): Mikroorganismen: Ökosystemfunktionen und Naturschutz. Anliegen Natur 40(1)
More information:  www.anl.bayern.de
Doc
Community level lipid profiling as a new tool to assign changes in food web structure in European forest soils
Community level lipid profiling: Ein neues Werkzeug zur Zuordnung von Veränderungen in der Nahrungsnetzstruktur in Europäischen Waldböden
Kühn J. (2016): Community level lipid profiling as a new tool to assign changes in food web structure in European forest soils. Master thesis, HU Berlin

Scientific assistants

Prof. Dr. Liliane Rueß
Alumni
Prof. Dr. Liliane Rueß
Dr. Thomas Buse
Alumni
Dr. Thomas Buse
Andreas Richter
Alumni
Andreas Richter
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