@article{KelmLenskiKelmetal.2014,
  author    = {Kelm, Detlev H. and Lenski, Johannes and Kelm, Volker and Toelch, Ulf and Dziock, Frank},
  title     = {Seasonal bat activity in relation to distance to hedgerows in an agricultural landscape in central Europe and implications for wind energy development},
  series = {Acta chiropterologica : international journal of bat biology},
  volume    = {16},
  journal   = {Acta chiropterologica : international journal of bat biology},
  number    = {1},
  publisher = {Museum and Institute of Zoology, Polish Academy of Sciences},
  address   = {Warsaw},
  issn      = {1508-1109},
  doi       = {10.3161/150811014X683273},
  pages     = {65 -- 73},
  year      = {2014},
  abstract  = {Bat activity is often concentrated near linear and edge landscape structures such as hedgerows, but information about seasonal and species-specific bat activity near hedges is scarce despite their abundance in the cultural landscapes of central Europe. Exact knowledge on animals' habitat use, however, is key to effective landscape planning to avoid human-wildlife-conflicts, such as the construction of wind turbines in areas with high bat activity that may result in bat fatalities. We measured bat activity in relation to distance to hedgerows in an agricultural landscape in northeastern Germany. We recorded bat echolocation calls at ground level at 0, 50, 100 and 200 m distances from hedges at five sites during three nights in spring (April to June) and three nights in summer (July to October) at each site. For all bat species we found the overall activity to be similar between seasons, with the highest activity near the hedges, but with considerable variation in species-specific spatial activity patterns between spring and summer. While the genus Myotis and Pipistrellus pipistrellus were mostly active close to the hedges at a similar intensity over the entire study period (i.e. 84\% and 86\% of all bat passes, respectively), Nyctalus noctula and Pipistrellus nathusii showed generally less pronounced concentration of activity near the hedges, and increased activity away from the hedges in summer. Similarly, Pipistrellus pygmaeus showed decreased activity away from the hedges during both seasons, but with reduced activity near the hedges in summer. The observed behavioural changes in activity in relation to distance to hedgerows are likely due to migration or the bats foraging for different prey between seasons. Our findings are highly relevant for landscape planning and distance recommendations for the construction of wind turbines linked to their potential threat for bats.},
  language  = {en}
}
@techreport{HuđekŽganecPusch2020,
  author    = {Huđek, Helena and Žganec, Krešimir and Pusch, Martin T.},
  title     = {A review of hydropower dams in Southeast Europe},
  series = {Renewable \& sustainable energy reviews},
  volume    = {117},
  journal   = {Renewable \& sustainable energy reviews},
  publisher = {Elsevier Science},
  address   = {Amsterdam [u.a.]},
  issn      = {1364-0321},
  doi       = {10.1016/j.rser.2019.109434},
  pages     = {11},
  year      = {2020},
  abstract  = {Currently, Southeast Europe (SEE) is witnessing a boom in hydropower plant (HPP) construction, which has not even spared protected areas. As SEE includes global hotspots of aquatic biodiversity, it is expected that this boom will result in a more severe impact on biodiversity than that of other regions. A more detailed assessment of the environmental risks resulting from HPP construction would have to rely on the existence of nearby hydrological and biological monitoring stations. For this reason, we review the distribution and trends of HPPs in the area, as well as the availability of hydrological and biological monitoring data from national institutions useable for environmental impact assessment. Our analysis samples tributary rivers of the Danube in Slovenia, Croatia, Bosnia and Herzegovina, Serbia, and Montenegro, referred to hereafter as TRD rivers. Currently, 636 HPPs are operating along the course of TRD rivers, most of which are small (<1 MW). An additional 1315 HPPs are currently planned to be built, mostly in Serbia and in Bosnia and Herzegovina. As official monitoring stations near HPPs are rare, the impact of those HPPs on river flow, fish and macro-invertebrates is difficult to assess. This manuscript represents the first regional review of hydropower use and of available data sources on its environmental impact for an area outside of the Alps. We conclude that current hydrological and biological monitoring in TRD rivers is insufficient for an assessment of the ecological impacts of HPPs. This data gap also prevents an adequate assessment of the ecological impacts of planned HP projects, as well as the identification of appropriate measures to mitigate the environmental effects of existing HPPs.},
  language  = {en}
}