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Nature-conservancy evaluation of the birds of Medvedce reservoir (NE Slovenia), and the existing threat factors

. BirdLife International (2009): Important Bird Area factsheet: Črete, Slovenia. - [ http://www.birdlife.org/datazone/sites/index.html?action=SitHTMDetails.asp&sid=23994&m=0 Bordjan, D. & Božič, L. (2009): Pojavljanje vodnih ptic in ujed na območju zadrževalnika Medvedce (Dravsko polje, SV Slovenija) - Acrocephalus 30 (141/142/143): 55-163. Božič, L. & Jančar, T. (2008): Utemeljitev za opredelitev novega IBA območja «Črete» (SI027). Društvo za opazovanje in proučevanje ptic Slovenije DOPPS, Ljubljana. - [http

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Ringing of White Storks Ciconia ciconia in NE Slovenia during the 1984–2013 period

. Denac D. (2001): Gnezditvena biologija, fenologija in razširjenost bele štorklje Ciconia ciconia v Sloveniji. - Acrocephalus 22 (106/107): 89-103. Denac D. (2010): Population dynamics of the White Stork Ciconia ciconia in Slovenia betwen 1999 and 2010. Populacijska dinamika bele štorklje Ciconia ciconia v Sloveniji med letoma 1999 in 2010. - Acrocephalus 31 (145/146): 101-114. Denac K., Vrh Vrezec P. (2015): Črna štorklja Franček - medijska zvezda. - Svet ptic 21 (1): 34-35. Fiedler G. (1999): Zur Gefährdung des

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Breeding birds in the terrestrial part of Medvedce reservoir (NE Slovenia)

Gnezdilke Kopenskega dela Zadrževalnika Medvedce (SV Slovenija)

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Waterbirds and raptors occurring in the area of Medvedce reservoir (Dravsko polje, NE Slovenia) during the 2002-2008 period

. Denac, D. & Božič, L. (2009): Breeding of the Mediterranean Gull Larus melanocephalus in Slovenia. - Annales Ser. hist. nat. 19 (1): 17-24. Denac, D., Smole, J. & Vrezec, A. (2009): Naravovarstveno vrednotenje avifavne ob Savi med Krškim in Jesenicami na Dolenjskem s predlogom novega mednarodno pomembnega območja (IBA) za ptice v Sloveniji. - Natura Sloveniae 11 (1): 25-57. Dimitrov, M., Michev, T., Profirov, L. & Nyagolov, K. (2005): Waterbirds of Bourgas Wetlands. Results and Evaluation of the Monthly

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Abundance and distribution of selected breeding river-bed birds on the Drava River between Maribor and Središče ob Dravi (NE Slovenia) in 2006 and 2009, and causes of the reduction of their populations

proučevanje ptic Slovenije DOPPS, Ljubljana. Bračko, F. (1997): Atlas Drave od Maribora do Ptuja. - Acrocephalus 18 (82): 57-97. Bračko, F. (2000): Reka Mura. str. 161-171 V: Polak, S. (ur.): Mednarodno pomembna območja za ptice v Sloveniji. Important Bird Areas (IBA) in Slovenia. Monografija DOPPS št. 1. - Društvo za opazovanje in proučevanje ptic Slovenije DOPPS, Ljubljana. Buckton, S. T. & Ormerod, S. J. (1997): Use of a new standardized habitat survey for assessing the habitat preferences and

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Letna Dinamika Pojavljanja Vodnih Ptic Na Reki Dravi Med Mariborskim Jezerom In Jezom Melje (Sv Slovenija) / Yearly dynamics of waterbirds’ occurrence on the Drava River between Lake Maribor and Melje Dam (NE Slovenia)

Abstract

Between April 2007 and April 2008, 40 systematic waterbird counts were conducted on the Drava River between Lake Maribor and the Melje Dam (length 8.5 km, area 155 ha) to determine the specific composition, abundance and seasonal dynamics of bird occurrence. Between October and May, counts were conducted every week, whereas between June and September they were carried out once every two weeks. In total, 26,803 individuals of 30 species were counted. The number of waterbirds and diversity of species were the highest from late December to late February, when more than 1,000 individuals were regularly present in the area. Waterbirds were distributed along the river unequally, with the highest number of birds present yearround in the city centre and in the first counting sector of Lake Maribor. The Mallard Anas platyrhynchos and Mute Swan Cygnus olor were recorded during every count, while occurrence frequency was greater than 50% in another 10 species. Dominant species in terms of percentage composition were Mallard, Black-headed Gull Chroicocephalus ridibundus, Coot Fulica atra, Mute Swan, Pochard Aythya ferina and Tufted Duck Ay. fuligula. Mute Swan and Mallard were the only breeding waterbirds in the study area. Both the total number of waterbirds and the highest daily total in the first two counting sectors were greater between October and March 1992/93 than in our study. The decline in numbers was the greatest for Mallard, Pochard and Tufted Duck, while an increase was noted in Mute Swan and Yellow-legged / Caspian Gull Larus michahellis / cachinnans. The total number of waterbirds and the number of some species in the study area were significantly higher than expected solely based on its length compared to the length of the lowland Drava in Slovenia (125.7 km). The study area is conservationally important for Pochard, Tufted Duck and Black-headed Gull

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The occurrence of rufous-morph Cuckoo Cuculus canorus females in NE Slovenia

Summary

Between 1982 and 2016, I observed 103 Cuckoos Cuculus canorus in NE Slovenia (3,170 km2). The data were collected randomly, thus only individuals that were seen or ringed are included in the total. Among these, seven females (6.7%) belonged to the rufous morph. The percentage of rufous individuals varies regionally throughout Central Europe.

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Relation between plant species diversity and landscape variables in Central-European dry grassland fragments and their successional derivates

use treatment regime explains the occurrence of the green winged orchid, Anacamptis morio (L.) R.M. Bateman, Pridgeon & M.W. Chase in the Goričko nature park, NE Slovenia. Folia Biologica et Geologica 56/3, 137–148. R Development Core Team, 2008: R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Reitalu, T., Johansson, L. J., Sykes, M. T., Hall, K., Prentice, H. C., 2010: History matters: village distances, grazing and grassland species diversity. Journal of Applied Ecology 47, 1216

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Diet of the Tawny Owl Strix aluco in the area of Slovenske gorice (NE Slovenia)

. (1995): Prehrana male uharice (Asio otus) in lesne sove (Strix aluco) s Pohorja (Slovenija). - Znanstvena revija, Naravoslovje in matematika 7 (1): 61-68. Štraus K. (2006): Prehrambena ekologija lesne sove (Strix aluco) na območju Pohorja in Kobanskega. Diplomsko delo. - Univerza v Mariboru, Pedagoška fakulteta. Tome D. (1994): Diet composition of the Long-eared Owl in central Slovenia: seasonal variation in prey use. - Journal of Raptor Research 28 (4): 253-258. Vrezec A. (2000): Evropsko pomembne populacije ptic v

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Alpine grasslands with dominant Luzula alpinopilosa in the Julian and Carnic Alps (NW Slovenia, NE Italy)

živalskih vrst v rdeči seznam. Uradni list RS 82/2002. Braun-Blanquet, J. & Jenny, J. 1926: Vegetationsentwicklung und Bodenbildung in der alpinen Stufe der Zentralalpen. Denkschr. Schweiz. Naturforsch. Ges. Zürich 63: 183–349. Braun-Blanquet, J. 1964: Pflanzensoziologie. Grundzüge der Vegetationskunde. 3. Auflage. Springer, Wien – New York, 865 pp. Buser, S. 2009: Geološka karta Slovenije 1: 250.000. Geological map of Slovenia 1: 250,000. Geološki zavod Slovenije, Ljubljana. Cegnar, T. 1998: Temperatura zraka. In: Fridl, J., Kladnik, D., Orožen

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