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Processes determining biodiversity in both managed and unmanaged forest stands analysed in the Bavarian Forest, Germany

Description: Das Projekt "Processes determining biodiversity in both managed and unmanaged forest stands analysed in the Bavarian Forest, Germany" wird vom Umweltbundesamt gefördert und von Technische Universität München, Fachgebiet Geobotanik durchgeführt. In this study important processes determining the compositional biodiversity of forest stands are investigated. The central goal is to find out the mechanisms leading to a certain biodiversity after natural and management disturbances. In the national park Bayerischer Wald experimental plots in forest stands with different disturbance regime are selected: - untouched for a long time, - Norway Spruce killed by bark beetle, - single tree selection silviculture - clearcut on small areas (up to 1 ha). Three important organismic groups are under study: beetles, fungi and plants. The first group is investigated by the Chair of Applied Zoology, the second by the Division of Systematic Botany. In the teaching unit Geobotany the effect of small scale soil disturbances on diversity of the ground vegetation is examined. Experimental plots of 0,5 m2 are digged up and the reaction of the vegetation is monitored for two years. Exposed mineral soil is a favourable site for germination and establishment for many species of the species pool. Thus soil disturbances may have a positive effect on species richness. The soil seed bank plays an important role for vegetation regeneration after disturbance. Therefore soil samples are taken and cultivated in a greenhouse. It is hypothesised that the soil seed bank is richer in seed and species number in managed forests than in those forests without direct human influence. To monitor seed rain we expose seed traps in the summer season. Light is an important trigger for the germination of species. Linking the reaction to soil disturbances under different light conditions to the biodiversity of the community helps to widen our understanding of the effect of disturbance regime on biological diversity. The comparison of unmanaged to managed forests enables us to contribute important aspects to the discussion on the effect of forest management on biological diversity.

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Origin: /Bund/UBA/UFORDAT

Tags: Käfer ? Bayerischer Wald ? München ? Gemeine Fichte ? Bodenvegetation ? Bildschirm ? Vegetation ? Waldschaden ? Bodenzoologie ? Baum ? Beleuchtung ? Borkenkäfer ? Botanik ? Saatgut ? Pflanzensamen ? Gewächshaus ? Zoologie ? Blei ? Geobotanik ? Bundesrepublik Deutschland ? Regen ? On-Site-Verfahren ? Sommer ? Teich ? Waldboden ? Wirkung ? Ackerrandstreifen ? Bestockung ? Mineralboden ? Jahreszeit ? Management ? Nationalpark ? Regen ? Störfall ? Studie ? Pilz ? Boden ? Artenvielfalt ? Biologische Sicherheit ? Bodenbelastung ? Bodenprobe ? Waldbiodiversität ? Forstwirtschaft ? Keimung ? Mineral ? Regeneration ? Bauelement ? Vergleich ? Biodiversität ? angewandt ? Aspekt ? ausgewählt ? biologisch ? Gruppe ? kleinmaßstäblich ? Impfung [Medizin] ? unter ? wichtig ? Kulturtechnik ? Mechanismen ? Hilf ? Art [Spezies] ? Probe ? Ausleitung ? Auslese ? Störwirkung ? Unterricht ? Einfangen ? Gemeinschaft ? Großer Wald ? Verhältnis ?

Region: Bayern

Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°

License: cc-by-nc-nd/4.0

Language: Deutsch

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Time ranges: 1999-01-01 - 2002-12-31

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