DBU Naturerbe GmbH

Osnabruck, Germany

DBU Naturerbe GmbH

Osnabruck, Germany
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Annighofer P.,University of Gottingen | Ammer C.,University of Gottingen | Balandier P.,IRSTEA | Bartsch N.,University of Gottingen | And 32 more authors.
European Journal of Forest Research | Year: 2016

Biomass equations are a helpful tool to estimate the tree and stand biomass production and standing stock. Such estimations are of great interest for science but also of great importance for global reports on the carbon cycle and the global climate system. Even though there are various collections and generic meta-analyses available with biomass equations for mature trees, reports on biomass equations for juvenile trees (seedlings and saplings) are mainly missing. Against the background of an increasing amount of reforestation and afforestation projects and forests in young successional stages, such equations are required. In this study we have collected data from various studies on the aboveground woody biomass of 19 common tree species growing in Europe. The aim of this paper was to calculate species-specific biomass equations for the aboveground woody biomass of single trees in dependence of root-collar-diameter (RCD), height (H) and the combination of the two (RCD2 H). Next to calculating species-specific biomass equations for the species available in the dataset, we also calculated generic biomass equations for all broadleaved species and all conifer species. The biomass equations should be a contribution to the pool of published biomass equations, whereas the novelty is here that the equations were exclusively derived for young trees. © 2016 Springer-Verlag Berlin Heidelberg

Schmiedel I.,University of Gottingen | Schmidt M.,Nordwestdeutsche Forstliche Versuchsanstalt | Schacherer A.,Niedersachsischer Landesbetrieb fur Wasserwirtschaft | Culmsee H.,University of Gottingen | Culmsee H.,DBU Naturerbe GmbH
Naturschutz und Landschaftsplanung | Year: 2013

Effectiveness of Protection Areas for the Conservation of Rare and Endangered Vascular Plant Species - Investigation in the Lowlands of Lower Saxony, Germany The establishment of protected areas is a central tool in species conservation. Using the 41 geographical regions of the lowlands of Lower Saxony as a model region, the study introduces a method to test the effectiveness of nature protection areas and Natura 2000 sites for the conservation of rare and endangered vascular plant species (RL, Red List species). The results show that RL species are effectively protected by nature protection areas in 85% of the geographical regions; for RL species depending on forest habitats this is the case in only 61% of the geographical regions. The extension of the protection area system to include Natura 2000 sites considerably improves the situation. The approach allows the identification of regions with high species richness of endangered plants (hotspots) that should be particularly considered for conservation and management actions.

Krause B.,University of Gottingen | Wesche K.,Senckenberg Museum fur Naturkunde | Culmsee H.,DBU Naturerbe GmbH | Leuschner C.,University of Gottingen
Natur und Landschaft | Year: 2014

This study presents for the first time a comprehensive cross-regional analysis of community change and species loss in the managed grasslands of northern and central Germany. In the 1950/60s, relatively species-rich communities of mesophilous and moist grasslands prevailed. Total grassland area decreased by about 45 % in the past 50-60 years while the remaining grassland was largely converted into intensively managed impoverished grassland. Based on 385 relevés taken in the 1950/60s in five floodplain grassland areas that were repeated in 2008, we found that mean plot-level species richness declined by about 30 % (from 27 to 19 species) and 23 formerly characteristic species of mesophilous and moist grasslands declined significantly in their frequency. Declining species include once common taxa such as Silene flos-cuculi (Ragged robin), Cardamine pratensis (Cuckoo flower) and Anthoxanthum odoratum (Sweet vernal grass). Losses were particularly severe in insect-pollinated species; increases were observed in seven competitive nitrogen-demanding species. The regional species pool remained unchanged (299 vs. 289 taxa) but many characteristic grassland species disappeared and were replaced by generalist species that are common in other habitat types as well. © 2014. Kohlhammer, Stuttgart.

Wiegleb G.,TU Brandenburg | Krawczynski R.,DBU Naturerbe GmbH
Waldokologie Online | Year: 2010

The use of water buffalos for landscape maintenance started ten years ago in Germany. Now, more than 2,100 buffalos are kept by about 90 breeders, and first results concerning their usefulness for landscape management are available. Buffalos are mainly used on particularly wet sites which cannot be grazed by cattle or other domestic animals. Although grazing of wetlands, river banks and water bodies is still controversial, early results from literature and our own research clearly indicate the beneficial impact of moderate grazing on such sites for birds, amphibians, vegetation and insects. This paper presents a short literature review and the first results of the BUBALUS project at Brandenburg University of Technology (BTU) and general experience from other projects.

The German National Natural Heritage scheme comprises ca. 125,000 ha of outstanding protected areas in natural and semi-natural environments. Approximately 60,000 ha of this land will be transferred to the private ownership of the German Federal Foundation for the Environment (DBU). A monitoring system is currently being developed in order to have a means of tracking the effectiveness of nature conservation measures on DBU Natural Heritage sites. Based on conservation goals for each site (including predefined standards and norms), the monitoring concept will include nine modules. The modules are categorised in terms of major conservation strategies (conservation of man-made habitats, maintenance of natural processes), vegetation classification (forest, open habitats, transition habitats) and scale of observation (entire area of all natural heritage sites, representative sampling areas, and data counting areas). These modules can be applied on a national, regional or local scale. An integrative approach is applied to develop meaningful and comprehensive indicators by pre-screening existing indicator sets. Thanks to the modular concept, this monitoring approach will be transferable to further National Natural Heritage sites.

Culmsee H.,DBU Naturerbe GmbH | Denstorf H.O.,DBU Naturerbe GmbH | Mann P.,Bundesanstalt fur Immobilienaufgaben Zentrale Bundesforst | Schmid L.,Bundesanstalt fur Immobilienaufgaben Zentrale Bundesforst
Natur und Landschaft | Year: 2015

It is a key element of the vision guiding Germany's National Natural Heritage scheme that natural ecological and evolutionary processes are to be maintained in near-natural forests, and that those forests which are currently far removed from a natural state are to be converted into near-natural forest communities. Some 75 % of the area under the scheme (125,000 ha) is covered by forests; of the 93,800 ha forested area, more than half is managed by the German Federal Foundation for the Environment (DBU). DBU sites under the scheme host almost the entire range of forest habitat types occurring in the Atlantic and Continental biogeographical regions of Germany. The naturalness of forests is determined by biodiversity values, and by their structure and ecological functions at stand and landscape level. Targetted forest conversion measures which aim at cessation of extractive use shall bring about a near-natural state as rapidly as possible. © 2014. Kohlhammer, Stuttgart.

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