Current status of Great Bustard Otis tarda in Turkey: population size, distribution, movements, and threats

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dc.authoridSOYLUER, Melisa/0000-0002-0952-8501
dc.authoridOzgencil, Ibrahim Kaan/0000-0002-5189-162X
dc.authoridGursoy Ergen, Arzu/0000-0001-7776-6571
dc.authorid, Fulya/0000-0003-3805-3215
dc.authoridKARATAS, MEHMET MAHIR/0000-0002-3545-1464
dc.contributor.authorOzgencil, Ibrahim Kaan
dc.contributor.authorAkarsu, Ferdi
dc.contributor.authorKaratas, Mehmet Mahir
dc.contributor.authorGursoy-Ergen, Arzu
dc.contributor.authorSaygili-Yigit, Fulya
dc.contributor.authorKarakaya, Muharrem
dc.contributor.authorSoyluer, Melisa
dc.date.accessioned2024-11-07T13:35:14Z
dc.date.available2024-11-07T13:35:14Z
dc.date.issued2022
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThe Great Bustard Otis tarda is a globally threatened species with populations inhabiting the steppe zones of Turkey. In recent decades, its populations in Turkey have suffered severe declines in range and size. Although the remaining populations are in urgent need of protection, there has been no national-scale study on the species since 2009, and huge information gaps remain concerning its range, abundance, and movements in the country. Here, we combined data from five years of fieldwork together with all available sight and literature records to present up-to-date estimates of distribution and population size in Turkey, to better understand its movement patterns, to reveal its recent and historical population changes, and to assess its national extinction risk and threats. We find that the species' breeding population has shrunk by 20-29% over the last five years, and there are only 559-780 breeding Great Bustards in Turkey distributed in two discrete subpopulations. Comparison with historical records shows that the species' range has shrunk by at least 60% since the beginning of the 20th century. We suggest possible migratory routes within and through Turkey and that Turkey might have a higher regional importance for the species than previously thought. Illegal hunting, agricultural intensification, shift to irrigated crops, overgrazing, collision with powerlines, and disturbance are the most severe threats to the species in Turkey. Our national Red List assessment yields an Endangered categorisation. Further studies are needed to understand the metapopulation structure and movements of the species and to conserve its remaining populations in Turkey.
dc.description.sponsorshipEskis ehir Osmangazi University [201319008 (2013-64), 201619A232 (20161345)]; Ministry of Environment and Urbanisation; Ministry of Agriculture and Forestry; Dog. a Derneg. i
dc.description.sponsorshipWe thank Adem Akyol, Umut Tank, CansuOzcan, and Selami Oral for their help in data collection, Kiraz Erciyas, Guven Eken, Mustafa Culcuog. lu, Emrah Coban, Suat Mert, Kerem Ali Boyla, Zu lfu F.r.cli, Alexander Abuladze, and Mimi Kessler for providing data, and General Directorate of Nature Conservation and National Parks (DKMP), Ministry of Agriculture and Forestry in Turkey for sharing their survey data, Nigel Collar for being kind enough to do the first review of the manuscript and provide lots of highly useful comments, and the two referees, whose suggestions and contributions have improved the manuscript significantly. Our fieldwork was supported by Eskis ehir Osmangazi University (grant numbers 201319008 (2013-64) and 201619A232 (20161345)), by Ministry of Environment and Urbanisation (2018), Ministry of Agriculture and Forestry (2016, 2019), and Dog. a Derneg. i (2016, 2018).
dc.identifier.doi10.1017/S0959270921000289
dc.identifier.endpage543
dc.identifier.issn0959-2709
dc.identifier.issn1474-0001
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85111450334
dc.identifier.scopusqualityQ1
dc.identifier.startpage531
dc.identifier.urihttps://doi.org/10.1017/S0959270921000289
dc.identifier.urihttps://hdl.handle.net/11480/16400
dc.identifier.volume32
dc.identifier.wosWOS:000743345900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCambridge Univ Press
dc.relation.ispartofBird Conservation International
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectConservation
dc.subjectfarmland bird
dc.subjectgrassland bird
dc.subjectRed List
dc.subjectthreatened species
dc.titleCurrent status of Great Bustard Otis tarda in Turkey: population size, distribution, movements, and threats
dc.typeArticle

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