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Milić D, Rat M, Bokić B, Mudri-Stojnić S, Milošević N, Sukur N, Jakovetić D, Radak B, Tot T, Vujanović D, Anačkov G, Radišić D. Exploring the effects of habitat management on grassland biodiversity: A case study from northern Serbia. PLoS One 2024; 19:e0301391. [PMID: 38547306 PMCID: PMC10977728 DOI: 10.1371/journal.pone.0301391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 03/11/2024] [Indexed: 04/02/2024] Open
Abstract
Grasslands represent a biodiversity hotspot in the European agricultural landscape, their restoration is necessary and offers a great opportunity to mitigate or halt harmful processes. These measures require a comprehensive knowledge of historical landscape changes, but also adequate management strategies. The required data was gathered from the sand grasslands of northern Serbia, as this habitat is of high conservation priority. This area also has a long history of different habitat management approaches (grazing and mowing versus unmanaged), which has been documented over of the last two decades. This dataset enabled us to quantify the effects of different measures across multiple taxa (plants, insect pollinators, and birds). We linked the gathered data on plants, pollinators, and birds with habitat management measures. Our results show that, at the taxon level, the adopted management strategies were beneficial for species richness, abundance, and composition, as the highest diversity of plant, insect pollinator, and bird species was found in managed areas. Thus, an innovative modelling approach was adopted in this work to identify and explain the effects of management practices on changes in habitat communities. The findings yielded can be used in the decision making as well as development of new management programmes. We thus posit that, when restoring and establishing particular communities, priority needs to be given to species with a broad ecological response. We recommend using the decision tree as a suitable machine learning model for this purpose.
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Affiliation(s)
- Dubravka Milić
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Milica Rat
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Bojana Bokić
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Sonja Mudri-Stojnić
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Nemanja Milošević
- Department of Mathematics and Informatics, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Nataša Sukur
- Department of Mathematics and Informatics, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Dušan Jakovetić
- Department of Mathematics and Informatics, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Boris Radak
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Tamara Tot
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | | | - Goran Anačkov
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Dimitrije Radišić
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
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2
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Howard C, Marjakangas EL, Morán-Ordóñez A, Milanesi P, Abuladze A, Aghababyan K, Ajder V, Arkumarev V, Balmer DE, Bauer HG, Beale CM, Bino T, Boyla KA, Burfield IJ, Burke B, Caffrey B, Chodkiewicz T, Del Moral JC, Mazal VD, Fernández N, Fornasari L, Gerlach B, Godinho C, Herrando S, Ieronymidou C, Johnston A, Jovicevic M, Kalyakin M, Keller V, Knaus P, Kotrošan D, Kuzmenko T, Leitão D, Lindström Å, Maxhuni Q, Mihelič T, Mikuska T, Molina B, Nagy K, Noble D, Øien IJ, Paquet JY, Pladevall C, Portolou D, Radišić D, Rajkov S, Rajković DZ, Raudonikis L, Sattler T, Saveljić D, Shimmings P, Sjenicic J, Šťastný K, Stoychev S, Strus I, Sudfeldt C, Sultanov E, Szép T, Teufelbauer N, Uzunova D, van Turnhout CAM, Velevski M, Vikstrøm T, Vintchevski A, Voltzit O, Voříšek P, Wilk T, Zurell D, Brotons L, Lehikoinen A, Willis SG. Local colonisations and extinctions of European birds are poorly explained by changes in climate suitability. Nat Commun 2023; 14:4304. [PMID: 37474503 PMCID: PMC10359363 DOI: 10.1038/s41467-023-39093-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 05/23/2023] [Indexed: 07/22/2023] Open
Abstract
Climate change has been associated with both latitudinal and elevational shifts in species' ranges. The extent, however, to which climate change has driven recent range shifts alongside other putative drivers remains uncertain. Here, we use the changing distributions of 378 European breeding bird species over 30 years to explore the putative drivers of recent range dynamics, considering the effects of climate, land cover, other environmental variables, and species' traits on the probability of local colonisation and extinction. On average, species shifted their ranges by 2.4 km/year. These shifts, however, were significantly different from expectations due to changing climate and land cover. We found that local colonisation and extinction events were influenced primarily by initial climate conditions and by species' range traits. By contrast, changes in climate suitability over the period were less important. This highlights the limitations of using only climate and land cover when projecting future changes in species' ranges and emphasises the need for integrative, multi-predictor approaches for more robust forecasting.
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Affiliation(s)
- Christine Howard
- Conservation Ecology Group, Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK.
| | - Emma-Liina Marjakangas
- The Helsinki Lab of Ornithology, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - Alejandra Morán-Ordóñez
- Ecological and Forestry Applications Research Centre (CREAF), 08193, Cerdanyola del Vallès, Spain
- Forest Science and Tecnology Centre (CTFC), Carretera vella de Sant Llorenç de Morunys km 2, 25280, Sant Llorenç de Morunys, Spain
| | - Pietro Milanesi
- Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland
- Department of Biological, Geological and Environmental Sciences (BiGeA), University of Bologna, Via F. Selmi 3, 40126, Bologna, Italy
| | - Aleksandre Abuladze
- Institute of Zoology, Ilia State University, Kakutsa Cholokashvili Ave 3 / 5, Tbilisi, 0162, Georgia
| | - Karen Aghababyan
- BirdLinks Armenia (former TSE-Towards Sustainable Ecosystems) NGO, 87b Dimitrov, apt 14, Yerevan, Armenia
| | - Vitalie Ajder
- Society for Birds and Nature Protection, Leova, Republic of Moldova
- Moldova State University, A.Mateevici str. 60, Chişinău, Republic of Moldova
| | - Volen Arkumarev
- Bulgarian Society for the Protection of Birds/BirdLife Bulgaria, Sofia 1111, Yavorov complex, bl. 71, en. 1, ap. 1, Sofia, Bulgaria
| | - Dawn E Balmer
- British Trust for Ornithology, The Nunnery, Thetford, Norfolk, IP24 2PU, UK
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
| | - Hans-Günther Bauer
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
- Max-Planck Institute of Animal Behaviour, Am Obstberg 1, 78315, Radolfzell, Germany
| | - Colin M Beale
- York Environmental Sustainability Institute, University of York, York, YO10 5NG, UK
- Department of Biology, University of York, YO10 5DD, York, UK
| | - Taulant Bino
- Albanian Ornithological Society, Rr. "Vaso Pasha", Nd. 4, Apt. 3, 1004, Tirana, Albania
| | - Kerem Ali Boyla
- WWF Turkey, Büyük Postane Caddesi No: 19 Kat: 5, 34420, Bahçekapı-Fatih, İstanbul, Turkey
| | - Ian J Burfield
- BirdLife International, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - Brian Burke
- BirdWatch Ireland, Unit 20, Block D, Bullford Business Campus, Kilcoole, Greystones, County Wicklow, Ireland
| | - Brian Caffrey
- BirdWatch Ireland, Unit 20, Block D, Bullford Business Campus, Kilcoole, Greystones, County Wicklow, Ireland
| | - Tomasz Chodkiewicz
- Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679, Warszawa, Poland
- Polish Society for the Protection of Birds, Odrowąża 24, 05-270, Marki, Poland
| | - Juan Carlos Del Moral
- Sociedad Española de Ornitología (SEO/BirdLife), Melquiades Biencinto, 34, 28053, Madrid, Spain
| | - Vlatka Dumbovic Mazal
- Institute for Environment and Nature, Ministry of Economy and Sustainable Development, Radnicka cesta 80, 10 000, Zagreb, Croatia
| | - Néstor Fernández
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Inst. of Biology, Martin Luther Univ. Halle-Wittenberg, Halle, Germany
| | | | - Bettina Gerlach
- DDA-Federation of German Avifaunists, An den Speichern 2, D-48157, Münster, Germany
| | - Carlos Godinho
- MED-Mediterranean Institute for Agriculture, Environment and Development; LabOr-Laboratório de Ornitologia Universidade de Évora Pólo da Mitra, Apartado 94, 7002-774, Évora, Portugal
| | - Sergi Herrando
- Ecological and Forestry Applications Research Centre (CREAF), 08193, Cerdanyola del Vallès, Spain
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
- Catalan Ornithological Institute, Natural History Museum of Barcelona, Plaça Leonardo da Vinci 4-5, 08019, Barcelona, Spain
| | | | - Alison Johnston
- Centre for Research into Ecological and Environmental Modelling, University of St Andrews, St Andrews, UK
| | | | - Mikhail Kalyakin
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
- Zoological Museum of Lomonosov Moscow State University, Bolshaya Nikitskaya Str., 2, Moscow, 125009, Russia
| | - Verena Keller
- Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
| | - Peter Knaus
- Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland
| | - Dražen Kotrošan
- Ornithological society "Naše ptice", Semira Frašte 6, 71 000, Sarajevo, Bosnia and Herzegovina
| | - Tatiana Kuzmenko
- Ukrainian Society for the Protection of Birds, P.O. Box 33, Kyiv, 01103, Ukraine
| | - Domingos Leitão
- Sociedade Portuguesa para o Estudo das Aves, Av. Almirante Gago Coutinho, 46A, 1700-031, Lisboa, Portugal
| | - Åke Lindström
- Department of Biology, Lund University, Lund, Sweden
| | - Qenan Maxhuni
- Kosovo Ornithological Society, Str. Hysni Gashi no. 28, Kalabri, 10 000, Prishtinë, Republic of Kosovo
| | - Tomaž Mihelič
- DOPPS-BirdLife Slovenia, Tržaška c. 2, SI, 1000, Ljubljana, Slovenia
| | - Tibor Mikuska
- Croatian Society for Birds and Nature Protection, Gundulićeva 19a, HR-31000, Osijek, Croatia
| | - Blas Molina
- Sociedad Española de Ornitología (SEO/BirdLife), Melquiades Biencinto, 34, 28053, Madrid, Spain
| | - Károly Nagy
- MME BirdLife Hungary, 1121 Költő u. 21, Budapest, Hungary
| | - David Noble
- British Trust for Ornithology, The Nunnery, Thetford, Norfolk, IP24 2PU, UK
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
| | | | | | - Clara Pladevall
- Andorra Research + Innovation, Av. Rocafort 21-23, AD600, Sant Julià de Lòria, Andorra
| | - Danae Portolou
- Hellenic Ornithological Society / BirdLife Greece, Agiou Konstantinou 52, Athens, 10437, Greece
| | - Dimitrije Radišić
- University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Trg Dositeja Obradovića 3, Novi Sad, 21000, Serbia
| | - Saša Rajkov
- Center for Biodiversity Research, Maksima Gorkog 40/3, 21000, Novi Sad, Serbia
| | - Draženko Z Rajković
- Center for Biodiversity Research, Maksima Gorkog 40/3, 21000, Novi Sad, Serbia
| | - Liutauras Raudonikis
- Lithuanian Ornithological Society, Naugarduko st. 47-3, LT-03208, Vilnius, Lithuania
| | - Thomas Sattler
- Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland
| | - Darko Saveljić
- Environmental Protection Agency of Montenegro, IV proleterske 19, 81000, Podgorica, Montenegro
| | - Paul Shimmings
- BirdLife Norway. Sandgata 30b, NO-7012, Trondheim, Norway
| | - Jovica Sjenicic
- Ornithological society "Naše ptice", Semira Frašte 6, 71 000, Sarajevo, Bosnia and Herzegovina
- Society for Research and Protection of Biodiversity, Mladena Stojanovica 2, 78 000, Banja Luka, Bosnia and Herzegovina
| | - Karel Šťastný
- Czech University of Life Sciences, Faculty of Environmental Sciences, Dept. of Ecology, Kamýcká 129, 165 21 Prague 6-Suchdol, Prague, Czech Republic
| | - Stoycho Stoychev
- Bulgarian Society for the Protection of Birds/BirdLife Bulgaria, Sofia 1111, Yavorov complex, bl. 71, en. 1, ap. 1, Sofia, Bulgaria
| | - Iurii Strus
- Nature reserve "Roztochya", Sichovyh Striltsiv 7, 81070, Ivano-Frankove, Ukraine
| | - Christoph Sudfeldt
- DDA-Federation of German Avifaunists, An den Speichern 2, D-48157, Münster, Germany
| | - Elchin Sultanov
- Azerbaijan Ornithological Society, M. Mushfiq 4B, ap.60, Baku, AZ1004, Azerbaijan Republic
| | - Tibor Szép
- MME BirdLife Hungary, 1121 Költő u. 21, Budapest, Hungary
- University of Nyíregyháza, 4400 Sóstói út 31/b, Nyíregyháza, Hungary
| | | | - Danka Uzunova
- Macedonian Ecological Society, Blvd. Boris Trajkovski Str. 7, 9a, Skopje, N, Macedonia
| | - Chris A M van Turnhout
- Sovon-Dutch Centre for Field Ornithology, Nijmegen, The Netherlands
- Radboud Institute for Biological and Environmental Sciences, Radboud University, Nijmegen, The Netherlands
| | - Metodija Velevski
- Macedonian Ecological Society, Blvd. Boris Trajkovski Str. 7, 9a, Skopje, N, Macedonia
| | - Thomas Vikstrøm
- Dansk Ornitologisk Forening (DOF-BirdLife DK), Copenhagen, Denmark
| | | | - Olga Voltzit
- Zoological Museum of Lomonosov Moscow State University, Bolshaya Nikitskaya Str., 2, Moscow, 125009, Russia
| | - Petr Voříšek
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
- Czech Society for Ornithology, Na Bělidle 34, 15000, Prague 5, Czechia
| | - Tomasz Wilk
- Polish Society for the Protection of Birds, Odrowąża 24, 05-270, Marki, Poland
| | - Damaris Zurell
- Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Lluís Brotons
- Ecological and Forestry Applications Research Centre (CREAF), 08193, Cerdanyola del Vallès, Spain
- Forest Science and Tecnology Centre (CTFC), Carretera vella de Sant Llorenç de Morunys km 2, 25280, Sant Llorenç de Morunys, Spain
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
- CSIC, Cerdanyola del Vallès, 08193, Spain
| | - Aleksi Lehikoinen
- The Helsinki Lab of Ornithology, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
- Atlas Steering Committee, European Bird Census Council, Na Bělidle 34, CZ-150 00, Prague 5, Czech Republic
| | - Stephen G Willis
- Conservation Ecology Group, Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK.
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3
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Marjakangas EL, Bosco L, Versluijs M, Xu Y, Santangeli A, Holopainen S, Mäkeläinen S, Herrando S, Keller V, Voříšek P, Brotons L, Johnston A, Princé K, Willis SG, Aghababyan K, Ajder V, Balmer DE, Bino T, Boyla KA, Chodkiewicz T, Del Moral JC, Mazal VD, Ferrarini A, Godinho C, Gustin M, Kalyakin M, Knaus P, Kuzmenko T, Lindström Å, Maxhuni Q, Molina B, Nagy K, Radišić D, Rajkov S, Rajković DZ, Raudoniki L, Sjeničić J, Stoychev S, Szép T, Teufelbauer N, Ursul S, van Turnhout CAM, Velevski M, Vikstrøm T, Wilk T, Voltzit O, Øien IJ, Sudfeldt C, Gerlach B, Lehikoinen A. Ecological barriers mediate spatiotemporal shifts of bird communities at a continental scale. Proc Natl Acad Sci U S A 2023; 120:e2213330120. [PMID: 37252949 DOI: 10.1073/pnas.2213330120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Species' range shifts and local extinctions caused by climate change lead to community composition changes. At large spatial scales, ecological barriers, such as biome boundaries, coastlines, and elevation, can influence a community's ability to shift in response to climate change. Yet, ecological barriers are rarely considered in climate change studies, potentially hindering predictions of biodiversity shifts. We used data from two consecutive European breeding bird atlases to calculate the geographic distance and direction between communities in the 1980s and their compositional best match in the 2010s and modeled their response to barriers. The ecological barriers affected both the distance and direction of bird community composition shifts, with coastlines and elevation having the strongest influence. Our results underscore the relevance of combining ecological barriers and community shift projections for identifying the forces hindering community adjustments under global change. Notably, due to (macro)ecological barriers, communities are not able to track their climatic niches, which may lead to drastic changes, and potential losses, in community compositions in the future.
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Affiliation(s)
| | - Laura Bosco
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
| | - Martijn Versluijs
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
| | - Yanjie Xu
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
| | - Andrea Santangeli
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
- Population Ecology Group, Institute for Mediterranean Studies, Consell Superior d'Investigacions Científiques and the University of the Balearic Islands, 07190 Esporles, Spain
| | - Sari Holopainen
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
| | - Sanna Mäkeläinen
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
| | - Sergi Herrando
- European Bird Census Council, Beek-Ubbergen 6573, Netherlands
- Catalan Ornithological Institute, Natural History Museum of Barcelona, 08019 Barcelona, Catalonia, Spain
- Centre for Ecological Research and Forestry Applications, 08193 Cerdanyola del Vallés, Spain
| | - Verena Keller
- European Bird Census Council, Beek-Ubbergen 6573, Netherlands
- Swiss Ornithological Institute, 6204 Sempach, Switzerland
| | - Petr Voříšek
- European Bird Census Council, Beek-Ubbergen 6573, Netherlands
| | - Lluís Brotons
- Spanish National Research Council, 28006 Madrid, Spain
- Forest Science and Technology Centre of Catalonia, 25280 Solsona, Spain
- Centre for Research into Ecological and Environmental Modelling, University of St Andrews, St Andrews KY16 9AJ, United Kingdom
| | - Alison Johnston
- Centre for Research into Ecological and Environmental Modelling, University of St Andrews, St Andrews KY16 9AJ, United Kingdom
| | - Karine Princé
- Muséum national d'histoire naturelle, 7204 Centre d'Ecologie et des Sciences de la Conservation, 75005 Paris, France
| | - Stephen G Willis
- Department of Biosciences, Conservation Ecology Group, Durham University, Durham DH1 3LE, United Kingdom
| | | | - Vitalie Ajder
- Society for Birds and Nature Protection, Leova MD-6321, Republic of Moldova
- Institute of Ecology and Geography, Moldova State Universit, MD-2009 Chișinău, Republic of Moldova
| | - Dawn E Balmer
- British Trust for Ornithology, Thetford, Norfolk IP24 2PU, United Kingdom
| | - Taulant Bino
- Albanian Ornithological Society, Tirana 1004, Albania
| | | | - Tomasz Chodkiewicz
- Museum and Institute of Zoology, Polish Academy of Sciences, Warszawa 00-679, Poland
- Polish Society for the Protection of Birds, 05-270 Marki, Poland
| | | | - Vlatka Dumbović Mazal
- Institute for Environment and Nature, Ministry of Economy and Sustainable Development, 10000 Zagreb, Croatia
| | | | - Carlos Godinho
- Mediterranean Institute for Agriculture, Environment and Development, Labor Laboratory of Ornithology, Universidade de Évora, Pólo da Mitra, 7002-554 Évora, Portugal
| | | | | | - Peter Knaus
- Swiss Ornithological Institute, 6204 Sempach, Switzerland
| | - Tatiana Kuzmenko
- Swiss Ornithological Institute, 6204 Sempach, Switzerland
- Poliskiy Nature Reserve, 11196 Ovruch, Ukraine
| | - Åke Lindström
- Department of Biology, Biodiversity Unit, Lund University, Lund SE-22362, Sweden
| | - Qenan Maxhuni
- University of Gjakova "Fehmi Agani", 50 000 Gjakova, Kosova
| | - Blas Molina
- Sociedad Española de Ornitología/BirdLife, 28053 Madrid, Spain
| | - Károly Nagy
- Magyar Madártani és Természetvédelmi Egyesület BirdLife Hungary, 1536 Budapest, Hungary
| | - Dimitrije Radišić
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, 21000 Novi Sad, Serbia
| | - Saša Rajkov
- Center for Biodiversity Research, 21000 Novi Sad, Serbia
| | | | | | - Jovica Sjeničić
- Society for Research and Protection of Biodiversity, 78 000 Banja Luka, Bosnia and Herzegovina
| | - Stoycho Stoychev
- Bulgarian Society for the Protection of Birds/BirdLife in Bulgaria, Sofia 1111, Bulgaria
| | - Tibor Szép
- University of Nyíregyháza, Nyíregyháza 4400, Hungary
| | | | - Silvia Ursul
- Society for Birds and Nature Protection, Leova MD-6321, Republic of Moldova
| | - Chris A M van Turnhout
- Sovon Dutch Centre for Field Ornithology, 6503 GA Nijmegen, The Netherlands
- Department of Animal Ecology, Radboud Institute for Biological and Environmental Sciences, Radboud University, 6500 GL Nijmegen, The Netherlands
| | | | - Thomas Vikstrøm
- Zoological Museum of Lomonosov, Moscow State University, Moscow 125009, Russia
| | - Tomasz Wilk
- Polish Society for the Protection of Birds, 05-270 Marki, Poland
| | - Olga Voltzit
- Dansk Ornitologisk Forening - BirdLife Denmark, 1620 Copenhagen V, Denmark
| | | | - Christoph Sudfeldt
- Dachverband Deutscher Avifaunisten - Federation of German Avifaunists, D-48157, Münster, Germany
| | - Bettina Gerlach
- Dachverband Deutscher Avifaunisten - Federation of German Avifaunists, D-48157, Münster, Germany
| | - Aleksi Lehikoinen
- Finnish Museum of Natural History, University of Helsinki, 00014 Helsinki, Finland
- European Bird Census Council, Beek-Ubbergen 6573, Netherlands
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