@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}
}
@article{DarwallBremerichDeWeveretal.2018,
  author    = {Darwall, William and Bremerich, Vanessa and De Wever, Aaike and Dell, Anthony I. and Freyhof, Joerg and Gessner, Mark O. and Grossart, Hans-Peter and Harrison, Ian and Irvine, Ken and J{\"a}hnig, Sonja C. and Jeschke, Jonathan M. and Lee, Jessica J. and Lu, Cai and Lewandowska, Aleksandra M. and Monaghan, Michael T. and Nejstgaard, Jens C. and Patricio, Harmony and Schmidt-Kloiber, Astrid and Stuart, Simon N. and Thieme, Michele and Tockner, Klement and Turak, Eren and Weyl, Olaf},
  title     = {The alliance for freshwater life},
  series = {Aquatic Conservation: Marine and Freshwater Ecosystems},
  volume    = {28},
  journal   = {Aquatic Conservation: Marine and Freshwater Ecosystems},
  number    = {4},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {1052-7613},
  doi       = {10.1002/aqc.2958},
  pages     = {1015 -- 1022},
  year      = {2018},
  abstract  = {1. Global pressures on freshwater ecosystems are high and rising. Viewed primarily as a resource for humans, current practices of water use have led to catastrophic declines in freshwater species and the degradation of freshwater ecosystems, including their genetic and functional diversity. Approximately three-quarters of the world's inland wetlands have been lost, one-third of the 28 000 freshwater species assessed for the International Union for Conservation of Nature (IUCN) Red List are threatened with extinction, and freshwater vertebrate populations are undergoing declines that are more rapid than those of terrestrial and marine species. This global loss continues unchecked, despite the importance of freshwater ecosystems as a source of clean water, food, livelihoods, recreation, and inspiration. 2. The causes of these declines include hydrological alterations, habitat degradation and loss, overexploitation, invasive species, pollution, and the multiple impacts of climate change. Although there are policy initiatives that aim to protect freshwater life, these are rarely implemented with sufficient conviction and enforcement. Policies that focus on the development and management of fresh waters as a resource for people almost universally neglect the biodiversity that they contain. 3. Here we introduce the Alliance for Freshwater Life, a global initiative, uniting specialists in research, data synthesis, conservation, education and outreach, and policymaking. This expert network aims to provide the critical mass required for the effective representation of freshwater biodiversity at policy meetings, to develop solutions balancing the needs of development and conservation, and to better convey the important role freshwater ecosystems play in human well-being. Through this united effort we hope to reverse this tide of loss and decline in freshwater biodiversity. We introduce several short- and medium-term actions as examples for making positive change, and invite individuals, organizations, authorities, and governments to join the Alliance for Freshwater Life.},
  language  = {en}
}
@phdthesis{Nguyen2019,
  author    = {Nguyen, Manh Duy Linh},
  title     = {Reproduction, development and reproductive isolation barriers of the mormyrid fish (genus Campylomormyrus, Teleostei)},
  doi       = {10.25932/publishup-43719},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437197},
  school      = {Universit{\"a}t Potsdam},
  pages     = {121},
  year      = {2019},
  abstract  = {Weakly electric mormyrid fish comprise about 200 species. 15 species of the genus Campylomormyrus have been described. These are very diverse concerning the trunk-like snout and the shape and duration of the electric organ discharge (EOD) and the anatomy of the electric organ. In this dissertation data on the reproduction in captivity of four species and on the ontogeny of the EOD and the EO of three species are presented. Reproduction of the four species C. compressirostris, C. rhynchophorus, C. tshokwe and C. numenius: Cyclical reproduction was provoked by changing only water conductivity (C): decreasing C led to gonadal recrudescence, an increase induced gonad regression. Data on the reproduction and development of three species are presented (in C. numenius gonad development could only be achieved in males). Agonistic behavior in the C. tshokwe pair forced us to divide the breeding tank; therefore, only ovipositions occurred. However, injection of an artificial GnRH hormone allowed us to obtain ripe eggs and sperm and to perform successful artificial reproduction. All three species (C. compressirostris, C. rhynchophorus, C. tshokwe) are indeterminate fractional spawners. Spawnings/ovipositions occurred during the second half of the night; no parental care was observed; no special spawning substrates were necessary. C. compressirostris successfully spawned in breeding groups, C. rhynchophorus as pair. Spawning intervals ranged from 6 to 66 days in C. rhynchophorus, 10-75 days in C. tshokwe, and 18 days in C. compressirostris (calculated values). Fecundities (eggs per fractional spawning) ranged from 70 to 1570 eggs in C. rhynchophorus, 100-1192 in C. tshokwe, and 38-246 in C. compressirostris. All three species produce yolky, slightly sticky eggs. Egg diameter ranges from 2.3-3.0 mm. Hatching occurred on day 3, feeding started on day 11. Transition from larval to juvenile stage occurred at around 20 mm total length (TL). At this size C. rhynchophorus developed a higher body than the two other species and differences between the species in the melanin pigmentation of the unpaired fins occurred. Between 32 and 35 mm TL the upper and lower jaws developed. C. compressirostris and C. tamandua are similar in morphology and both produce short EODs of ca. 150-200 μs duration. Both species reproduce easily in captivity. We tried to obtain natural hybrids in two breeding groups, 1) four males of C. compressirostris and three females of C. tamandua and 2) six females of C. compressirostris and four males of C. tamandua. In both combinations several times oviposition occurred, however, we never found fertilized eggs. In subsequent experiments, not described here, we obtained hybrids between these two species by means of artificial reproduction. Ontogeny of the EOD and the EO: The Campylomormyrus species are very diverse both concerning the shape and the duration of their EODs. There are species with very short EODs, e.g. C. compressirostris duration, a species with an EOD length of about 4-8 ms duration (C. tshokwe) and species with very long EODs of about 25 ms duration (e.g. C. rhynchophorus). Due to the successful breeding of the three species in captivity, we were able to investigate in detail the ontogeny of the EOD. Larvae of the three species C. compressirostris, C. tshokwe and C. rhynchophorus first produce a biphasic larval EOD typical for these small larvae. The first activity of the adult electric organ in the caudal peduncle is a biphasic juvenile EOD. Juvenile C. compressirostris and C. tshokwe start out with a short biphasic EOD of about 160 - 200 μs duration at sizes between 25 mm (C. compressirostris) and 37 mm (C. tshokwe). Adult C. compressirostris show an EOD identical to that of the juvenile. In C. tshokwe, the juvenile EOD changes continuously during development both concerning duration, amplitude increase and shape. 18 cm long C. tshokwe still do not yet produce an EOD typical for the adult fish. Juveniles of C. rhynchophorus produce at 33 mm total length a juvenile biphasic EOD, however, of longer duration (about 640 μs) than the two species mentioned above. This juvenile EOD changes continuously both in form, amplitude increase and duration with growth until the adult EOD waveform appears at about 15 cm body length. In juveniles about seven cm long the triphasic feature of the EOD starts to develop due to the appearance of a second head positive phase. Specific EOD stages are produced in relation to size and not to age. Individual differences in the EOD both concerning shape and duration are very small. The basic anatomy of the electrocytes is very similar in all three species: the main stalk which receives the innervation, is located at the caudal face of the electrocyte. Membrane penetrations of the stalks do not occur. However, there are differences in the fine structure of the electrocytes in the three species. Papillae, proliferations of the membrane, which increase the surface area of the electrocyte and are thought to incrase the EOD-duration, are only found in C. tshokwe and C. rhynchophorus. In these two species in addition, holes develop in the electrocytes during ontogeny. This might also have an impact on EOD duration.},
  language  = {en}
}
@misc{MeyerSchulzJeibmannetal.2014,
  author    = {Meyer, S{\"o}ren and Schulz, Jacqueline and Jeibmann, Astrid and Taleshi, Mojtaba S. and Ebert, Franziska and Francesconi, Kevin and Schwerdtle, Tanja},
  title     = {Arsenic-containing hydrocarbons are toxic in the in vivo model Drosophila melanogaster},
  volume    = {11},
  number    = {6},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-76819},
  pages     = {2010 -- 2014},
  year      = {2014},
  abstract  = {Arsenic-containing hydrocarbons (AsHC) constitute one group of arsenolipids that have been identified in seafood. In this first in vivo toxicity study for AsHCs, we show that AsHCs exert toxic effects in Drosophila melanogaster in a concentration range similar to that of arsenite. In contrast to arsenite, however, AsHCs cause developmental toxicity in the late developmental stages of Drosophila melanogaster. This work illustrates the need for a full characterisation of the toxicity of AsHCs in experimental animals to finally assess the risk to human health related to the presence of arsenolipids in seafood.},
  language  = {en}
}
@article{MeyerSchulzJeibmannetal.2014,
  author    = {Meyer, S{\"o}ren and Schulz, Jacqueline and Jeibmann, Astrid and Taleshi, Mojtaba S. and Ebert, Franziska and Francesconi, Kevin and Schwerdtle, Tanja},
  title     = {Arsenic-containing hydrocarbons are toxic in the in vivo model Drosophila melanogaster},
  series = {Metallomics},
  journal   = {Metallomics},
  editor    = {Schwerdtle, Tanja},
  publisher = {The Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {1756-5901},
  pages     = {2010 -- 2014},
  year      = {2014},
  abstract  = {Arsenic-containing hydrocarbons (AsHC) constitute one group of arsenolipids that have been identified in seafood. In this first in vivo toxicity study for AsHCs, we show that AsHCs exert toxic effects in Drosophila melanogaster in a concentration range similar to that of arsenite. In contrast to arsenite, however, AsHCs cause developmental toxicity in the late developmental stages of Drosophila melanogaster. This work illustrates the need for a full characterisation of the toxicity of AsHCs in experimental animals to finally assess the risk to human health related to the presence of arsenolipids in seafood.},
  language  = {en}
}