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Grunwald-Schwark V.,Kreisverwaltung Schleswig Flensburg | Zachos F.E.,Naturhistorisches Museum Wien | Honnen A.-C.,Leibniz Institute For Gewasserokologie Und Binnenfischerei | Borkenhagen P.,Faunistisch Okologische AG | And 10 more authors.
Natur und Landschaft | Year: 2012

The European otter (Lutra lutra) belongs to the most endangered mammal species in Europe and is a target species in many nature conservation projects. While the otter was still widespread in Schleswig-Holstein (S-H) in 1950, by the mid-1980s it had become almost extinct. Since 1993 a continuously increasing rate of recolonization in S-H has been observed. A comparison of the genetic profiles of otters in S-H with individuals of neighbouring populations reveals that most migrants originate from Mecklenburg-Western Pomerania and - to a lesser extent - from Denmark. In addition we could show an increased genetic variability in otters in S-H, most likely due to the imimmigration from different neighbouring populations, which is a favourable starting position for the establishment of a growing founder population. The majority of water bodies in S H are rated as potential dispersal areas for otters. Many of them have been designated as migration corridor search area, in which it is mandatory that any future environmental planning must take account of the needs of otters. Under this precondition, and assuming an ongoing protection of otter habitats and migration routes, a very positive prognosis regarding the future development of the otter population in S-H can be given.

The depth to shallow groundwater tables in the forest areas of the state of Brandenburg was computed within areas of unconfined groundwater as the difference between the groundwater level and the ground-surface level. Special attention had been dedicated to the digital processing of the data in order to make the investigations technically comprehensible and reproducible for future uses with better or updated data. The depth to the groundwater table was computed in four typical hydrologic reference periods when flood or low water had prevailed. In addition to fixed-day measurements of groundwater and surface water levels, other water-level data were also integrated in the analysis and were related to the reference periods by statistical methods. The results are used in an interdisciplinary project of the Eberswalde Forestry Competence Centre, where they are used to solve forest-ecological and sylvicultural problems.

Rein H.,Hochschule fur nachhaltige Entwicklung Eberswalde FH
Natur und Landschaft | Year: 2011

Demand for nature-based tourism offers is growing. Yet economic value can only be generated if such offers are linked to catering and accommodation facilities and further touristic services, and if purchasable tourism products are created and offered. The paper quantifies the added value of recreation and tourism, using the example of the Lower Oder Valley National Park. An analysis of the visitor centres of the National Natural Landscapes of Brandenburg reveals how economic value can be qualified by developing a network and an umbrella brand as well as through cooperative activities. Attractive nature and landscapes are fundamental to the development of naturebased tourism, and indeed tourism in general. Therefore tourism also bears responsibility for their conservation in order that they can serve as a vital and sustainable basis for future value creation in the sector.

Schmidtner E.,University of Hohenheim | Lippert C.,University of Hohenheim | Engler B.,University of Hohenheim | Haring A.M.,Hochschule fur nachhaltige Entwicklung Eberswalde FH | And 2 more authors.
European Review of Agricultural Economics | Year: 2012

The spatial distribution of organic farming can be explained by combining the traditional location factors that account for spatial heterogeneity with the concept of spatial dependence. We present a theoretical model that explains a farmer's decision to convert to organic farming, and this conceptual framework is then implemented in a spatial lag model by using secondary data for Germany at the county level. The results support the assertion that agglomeration effects are important in the organic farming sector. Potential policy implications include a concentration of development measures for organic farming in certain regions. © Oxford University Press and Foundation for the European Review of Agricultural Economics 2011; all rights reserved.

In the course of global climate change expected modifications in heat balance will likely have a huge impact on the development and stability of Brandenburgian forest ecosystems. In this paper risk areas are statistically identified and regionalized. Furthermore, areas which are suitable for an ecological based climate impact monitoring are determined. The basic idea of the methodological approach is the spatiotemporal analyses of climate indicators using multivariatestatistical procedures. For risk assessment, an algorithm was developed, in which expected temporal changes until the year 2050 or 2095 (climate scenario: A1B) are set in relation to the actual spatial range of ecological heat balance indicators. In this way expected changes can be evaluated concerning their disturbance potential. The estimated disturbance potentials are presented on raster maps with a resolution of 1 × 1 km. Forest ecosystems are complex in their cause-effect behavior. Under the same influence conditions various system states are possible, making prognoses difficult. Therefore, the most promising way seems to be the empirical investigation of species-specific norms of reaction and population dynamic potentials of adaption on the basis of the actual climate in special regions. From the empirical results, largescale predictions can be derived especially for the identified risk areas (predicting climate monitoring). Regions suitable for climate monitoring were indentified using a similar approach as used in deriving risk areas. For this, the differences between the actual values of ecological heat balance indicators and the respective average of the total forest area of Brandenburg in the future (decade 2090 - 2100) were calculated. The regions with maximum similarity to the future conditions are presented on a raster map. In further evaluation steps, the presented results will be combined with high resolution risk indicators for potential water deficiency and drought stress (100 × 100 m grid).

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