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Vlatka Gvozdić, Josip Brana, Dinko Puntarić, Domagoj Vidosavljević and Danijela Roland

References Maričić S, Mijušković-Svetinović T. Lower Drava monitoring. In: Gayer J, Scheuerlein K, Starosolszky O, editors. Proceedings of International Conference on European River development ICERD; 16-18 Apr 1998; Budapest, Hungary. Budapest: Water Resources Research Centre Plc.; 1998. p. 301-8. Habuda-Stanić M, Kuleš M, Kalajdžić B, Romić Ž. Quality of groundwater in eastern Croatia. The problem of asenic pollution. Desalination 2007;210:157-62. Romić Ž, Habuda-Stanić M

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Katja Logar and Luka Božič

Cygnus olor v severovzhodni Sloveniji. - Acrocephalus 17 (77): 113-116. Bračko F. (1997): Ornitološki atlas Drave od Maribora do Ptuja (1989-1992). - Acrocephalus 18 (82): 57-96. Bračko F. (1998): Nevestica Aix sponsa. - Acrocephalus 19 (89): 116-117. Campbell M. O. (2008): The Impact of Vegetation, River, and Urban Features on Waterbird Ecology in Glasgow, Scotland. - Journal of Coastal Research 24 (4A): 239-245. Cegnar T. (2007): Podnebne značilnosti leta 2007. - Mesečni bilten ARSO 14 (12): 31

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Luka Božič and Damijan Denac

Actitis hypoleucos in the Middle Vistula, Poland. Poster. – International Wader Study Group Annual Conference, Haapsalu, Estonia, 26–29 September 2014. F rühauf J, D vorak M. (1996): Der Flussuferläufer (Actitis hypoleucos) in Österreich: Brutbestand 1994/95, Habitat und Gefährdung. - BirdLife Österreich: Wien. ESRI (2009): ArcGIS, ver. 9.3. – ESRI, Redlands. F enyősi L. (2005): Studies of avian communities along river Drava between 2000–2004 (Aves). – Natura Somogyiensis 7: 119–141. F letcher J. R., H utto L. R. (2006): Estimating

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Luka Božič and Damijan Denac

at the edge. - Bird Study 52: 80-87 Dvorak, M., Ranner, A. & Berg, H.-M. (1993): Atlas der Brutvögel Österreichs. - Umweltbundesamt, Wien. Ernst, S. (2007): Die Brutvorkommen des Flussregenpfeifers Charadrius dubius im sächsischen Vogtland. - Mitteilungen des Vereins Sächsischer Ornithologen 10: 19-36. Fenyősi, L. (2005): Studies of avian communities along river Drava between 2000-2004 (Aves). - Natura Somogyiensis 7: 119-141. Geister, I. (1995): Ornitološki

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Tímea Kiss and Márton Balogh

paraméterek megváltozására bekövetkező morfológiai átalakulás a Hernádon. (Morphological alteration of the Hernád River caused by hydrological alterations) In: Kiss, T. (ed.) Természetföldrajzi folyamatok és formák. SZTE-TTIK, TFGT, 12-26. (in Hungarian) Blanka, V., Kiss, T. 2011. Effect of different water stages on bank erosion, case study on River Hernád, Hungary. Carpathian Journal of Earth and Environmental Sciences 6 (2), 101-108. Bonacci, O., Oskoruš, D. 2008. The influence of three Croatian hydroelectric power plants operation on the river Drava

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Hristina Kalcheva, Mária Dinka, Edit Ágoston-Szabó, Árpád Berczik, Roumen Kalchev, Nikolett Tarjanyi and Anita Kiss

– Bacterioplankton of wetlands along the Lower Danube River (Bulgaria) and its relation to environmental factors, Acta zoologica bulgarica , supplement 7, 83-89. 17. Kiss A., Ágoston-Szabó E., Dinka M. and Berczik Á., 2015 – Microcrustacean diversity in the Gemenc-Béda-Karapancsa Floodplains (Danube-Drava National Park, Hungary): rare and alien species, Opuscula Zoologica , Budapest, 46, 2, 183-197. 18. Kovalova N., Medinets S., Konareva O. and Medinets V., 2010 – Long-term changes of bacterioplankton and chlorophyll a as indicators of changes of northwestern part of

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Judit Nagy and Tímea Kiss

References Blanka, V. 2010. Kanyarulatfejlődés dinamikájának vizsgálata természeti és antropogén hatások tükrében. PhD thesis, 50-60. (in Hungarian) Bonacci, O., Oskoruš, D. 2008. The influence of three Croatian hydroelectric power plants operation on the river Drava hydrological and sediment regime. 24th Conf. of the Danubian countries, 11p. Geng, Q., Hui, X., Hu, G.X., Hui, Z.Y. 2012. The Change and Effect Factors of Water Level in Jingjiang River, Int. Conf. on Modern Hydraulic Engineering 28, 165

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Katarina Botić

chronology of the Starčevo-Criş and Körös cultures. In: Nikolova L., Higgins J. (eds.), Prehistoric Archaeology and Anthropological Theory and Education. Reports of Prehistoric Research Projects 6–7, 35–40. Biagi P., Shennan S., Spataro M. 2005. Rapid rivers and slow seas? – New data for the radiocarbon chronology of the Balkan peninsula. In: Nikolova L., Higgins J. (eds.), Prehistoric Archaeology and Anthropological Theory and Education. Reports of Prehistoric Research Projects 6-7, 41–52. Bianchi G.G., McCave I.N. 1999. Holocene periodicity in North Atlantic

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Remo Probst, Larisa Bogdea, Dan S. Bandacu, Mirko Bohuš, Svilen Cheshmedzhiev, Ákos Gáborik, Siegfried Geissler, Calin V. Hodor, Dan T. Ionescu, Veselin Koev, Tibor Mikuska, Zsolt Nagy, Tibor Parrag, Vlatko Rožac, Matthias Schmidt, Thomas Schneider, Marko Šćiban, Sándor Tatai, Emil Todorov, Adrian Tomik, Marko Tucakov, Miklós Váczi and Georg Frank

., Milenkovic- Srbulovic M., Parrag T., Petrova V., Raluca A., Rožac V., Šakić R., Schneider T., Surovec P., Tatai S., Tóth B., Tucakov M., Vasić I., Frank G. (in prep.): Riparian bird species (Little Ringed Plover, Sand Martin) as indicators for river dynamics and morphology. - ICPDR - International Commission for the Protection of the Danube River, Vienna. TERRA CAPI (2014): White Tailed Eagle (Haliaeetus albicilla) wintering population survey along the Duna river and in the Szigetköz area. - Research report by Terra Capi, Cultural and

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Luka Božič

In 2015, the International Waterbird Census (IWC) was carried out in Slovenia on 17 and 18 Jan. Waterbirds were counted on all larger rivers, along the entire Slovenian Coastland and on most of the major standing waters in the country. During the census, in which 276 observers took part, 409 sections of the rivers and coastal sea with a total length of 1385.8 km and 224 other localities (172 standing waters and 52 streams) were surveyed. Altogether, 46,425 waterbirds of 57 species were counted. This is one of the lowest numbers of waterbirds recorded during the 19 years of IWC in Slovenia. The highest numbers of waterbirds were counted in the Drava count area, i.e. 17,014 individuals (36.7% of all waterbirds in Slovenia). By far the most numerous species was Mallard Anas platyrhynchos (45.9% of all waterbirds), followed by Coot Fulica atra (8.4% of all waterbirds), Blackheaded Gull Chroicocephalus ridibundus (7.5% of all waterbirds), Cormorant Phalacrocorax carbo (5.7% of all waterbirds) and Mute Swan Cygnus olor (4.6% of all waterbirds). The number of 1000 counted individuals was also surpassed by Tufted Duck Aythya fuligula, Yellow-legged Gull Larus michahellis and Teal An. crecca. Among the rarer recorded species, the Cattle Egret Bubulcus ibis (registered only for the third time during the IWC) and Lesser Black-backed Gull Larus fuscus (registered only for the fourth time during the IWC) deserve special mention. Also, Ruddy Shelduck Tadorna ferruginea was recorded for the fourth time during the IWC, but the individual observed was classified to category E (introduced species without self-sustaining populations, escapees from captivity). Numbers of the following species were the highest so far recorded during the IWC: Greylag Goose Anser anser, Muscovy Duck Cairina moschata, Shoveler An. clypeata, Goosander Mergus merganser and Common Sandpiper Actitis hypoleucos. The number of Redbreasted Mergansers M. serrator was the lowest so far recorded during the IWC.