Description: Das Projekt "Mikrobielle Vielfalt in Boeden und die Stabilitaet anthropogenetisch beeinflusster oder gestoerter mikrobieller Bodengemeinschaften" wird vom Umweltbundesamt gefördert und von Solvit durchgeführt. Leading Questions: Is the microbial diversity of our soils influenced by actual heavy metal pollution? What is the distribution of the microbial diversity with respect to heavy metal pollution and with respect to different soil types (climates)? How are microbial community structure and resilience of the soil microbial community related? How does the adaptation to heavy metal load change the microbial community structure; and is the consequence of this change a modification in the ability of this community to respond to natural disturbances? How are the above interdependencies related to environmental variability (seasons)? Abstract: This project addresses two yet unresolved problems which affect our understanding of soil ecology and our capability to formulate ecological soil quality standards: 1. How diverse are the soil microorganisms in our soils and how is their diversity related to the soil properties and the known and broadly confirmed heavy metal pollution? 2. How are the complexity and the stability, in the meaning of the resilience, of a given soil community related? To clarify these questions we developed methods which are based on the analysis of the phospholipid fatty acids (=PLFA) extracted from the living soil organisms. Our first results showed that our methods allows to compare biodiversity and soil resilience of a large variety of soil samples and to classify microbial soil communities. Complementary information: The proposed study involves a two-step objective. The first objective is to assess the microbial diversity and community structure as a function of different soil types (from 30 localities in Switzerland, including lowlands and mountainous regions), climatic conditions and different levels of heavy metal loads (natural background levels, pollution sites). As the second objective, a subset of the assessed soils will be tested for their resilience towards a glucose pulse (a sudden increase of an easily degradable biotic substance occurring naturally in soil habitats during spring and autumn). This allows for the experimental investigation of the theoretical interdependence of this one aspect of stability along with complexity. To our knowledge such studies still do not exist, although they may be very important in judging the fate of our soil systems and ecosystems in general.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Glukose ? Schwermetallgehalt ? Fettsäure ? Schwermetallbelastung ? Bodenökologie ? Ökologie ? Schadstoffbelastung ? Schwermetall ? Schweiz ? Resilienz ? Bodenmikroorganismen ? Bodenstruktur ? Bodenverunreinigung ? Extraktion ? Habitat ? Mikrobielle Vielfalt ? Boden ? Bodentyp ? Bodenqualität ? Standortwahl ? Studie ? Mikroorganismen ? Flachland ? Stoff ? Bodenökosystem ? Bodenorganismen ? Bodenprobe ? Ökosystem ? Standardisierung ? Fauna ? Hintergrundwert ? Biodiversität ? Flora ? Diversität ? problematic stubstances ? PLFA ? Boden [Lebensraumfunktion] ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1993-01-01 - 1995-12-31
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