Rucker J.,TU Brandenburg |
Barsch A.,Seeburger |
Nixdorf B.,TU Brandenburg
WasserWirtschaft | Year: 2015
Trophic pressure is the main stressor for lakes. The aim of the EU Water Framework Directive is to reach a good ecological status for all water bodies. Assessment systems basing on ecological response of water plants (flora) for natural lakes and results of 183 lakes in Brandenburg are presented. Although there was an improvement of water quality as it is demonstrated for two lakes in the region of Lake Scharmiitzelsee since 1994, more than 80% of Brandenburg lakes do not achieve the good ecological status yet. In some cases the assessment by different ecological quality components (phytoplankton and macrophytes) differs remarkably. Reasons for these discrepancies are discussed. The comparison with target values for nutrient concentrations show that present phosphorus and nitrogen concentrations are still too high.
Schneeweiss N.,Landesamt fur Umwelt |
Hintzmann J.,Ministerium fur Klimaschutz |
Lippert J.,Seeburger |
Stein M.,Kastanienweg 1 |
Thiesmeier B.,Diemelweg 7
Zeitschrift fur Feldherpetologie | Year: 2014
At the least since the mid-19th century numerous free-living amphibians and reptiles get collected for hobby activity or commercial interests. The extinction of one green lizard population or the decline of European tree frogs in the surrounding of Berlin has been pulled together with the capture of animals since turn of the century before last. According to the federal law on nature protection and the species conservation act the capture of native amphibians and reptiles and their husbandry is forbidden since nearly 30 years. Despite of these clear legal norms interferences on free-living amphibian and reptiles populations are repeating until today. The motives are various and range from a collection purpose and a self-constituted breeding project to the point of unethical animal marketing. Even recently the illegal removal of individuals threatened one of the last green lizard population in Germany. Investigations in the internet, anonymous information and later on criminalistic investigations uncovered a network of national and international organized criminals. Three responsible persons have been convicted to partly perennial suspended jail sentences. The increasing threat for native amphibian and reptile populations demands more social efforts against the illegal capture and trade of wild animals. The public authorities for species conservation execution of the federal states have an important role. We claim for a complete ban in trading native amphibian and reptiles species. Organizations like the DGHT have to argue with the animal trade more critically and should put more efforts in the conservation of native amphibian and reptile populations in the future. © Laurenti-Verlag Bielefeld.
Noise & health | Year: 2011
Research on systematic noise effects started in Germany back in the fifties with basic experimental studies on humans. As a result, noise was classified as a non-specific stressor, which could cause an ergotropic activation of the complete organism. In the light of this background research a hypothesis was proposed that long-term noise exposure could have an adverse effect on health. This hypothesis was further supported by animal studies. Since the sixties, the adverse effects of chronic road traffic noise exposure were further examined in humans with the help of epidemiological studies. More epidemiological aircraft noise studies followed in the 1970s and thereafter. The sample size was increased, relevant confounding factors were taken into account, and the exposure and health outcomes were investigated objectively and with higher quality measures. To date, more than 20 German epidemiological traffic noise studies have focused on noise-induced health effects, mainly on the cardiovascular system. In particular, the newer German noise studies demonstrate a clear association between residential exposure to traffic noise (particularly night noise) and cardiovascular outcomes. Nevertheless, additional research is needed, particularly on vulnerable groups and multiple noise exposures. The epidemiological findings have still not been fully considered in German regulations, particularly for aircraft noise. The findings, however, were taken into account in national recommendations. The Federal Environment Agency recommends noise rating levels of 65 dB(A) for the day and 55 dB(A) for the night, as a short-term goal. In the medium term, noise rating levels of 60 / 50 (day, night) should be reached and noise rating levels of 55 / 45 in the long run.
Luft L.,Sielmanns Naturlandschaft Doberitzer Heide GGmbH |
Luft L.,University of Potsdam |
Neumann C.,Helmholtz Center Potsdam |
Freude M.,Seeburger |
And 2 more authors.
Ecological Indicators | Year: 2014
Military areas are valuable habitats and refuges for rare and endangered plants and animals. We developed a new approach applying innovative methods of hyperspectral remote sensing to bridge the existing gap between remote sensing technology and the demands of the nature conservation community. Remote sensing has already proven to be a valuable monitoring instrument. However, the approaches lack the consideration of the demands of applied nature conservation which includes the legal demands of the EU Habitat Directive. Following the idea of the Vital Signs Monitoring in the USA, we identified a subset of the highest priority monitoring indicators for our study area. We analyzed continuous spectral response curves and tested the measurability of N = 19 indicators on the basis of complexity levels aggregated from extensive vegetation assemblages. The spectral differentiability for the floristic as well as faunistic indicators revealed values up to 100% accuracy. We point out difficulties when it comes to distinguishing faunistic habitat requirements of several species adapted to dry open landscapes, which in this case results in Overall accuracy of 67, 87-95, and 35% in the error matrix. In summary, we provide an applicable and feasible method to facilitating monitoring military areas by hyperspectral remote sensing in the following. © 2014 Elsevier Ltd.
Floch J.,Sintef |
Fra C.,Telecom Italia |
Fricke R.,CONDAT GmbH |
Geihs K.,University of Kassel |
And 8 more authors.
Software - Practice and Experience | Year: 2013
Although the idea of context-awareness was introduced almost two decades ago, few mobile software applications are available today that can sense and adapt to their run-time environment. The development of context-aware and self-adaptive applications is complex and few developers have experience in this area. On the basis of several demonstrators built by the joint European research project MUSIC, this paper describes typical context and adaptation features relevant for the development of context-aware and self-adaptive mobile applications. We explain how the demonstrators were realised using the open-source platform MUSIC and present the feedback of the developers of these demonstrators. The main contribution of this paper is to show how the development complexity of context-aware and self-adaptive mobile applications can be mastered by using an adaptation framework such as MUSIC. Copyright © 2012 John Wiley & Sons, Ltd.