Researcher:
Aytekin, M. Çisel Kemahlı

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PhD Student

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M. Çisel Kemahlı

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Aytekin

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Aytekin, M. Çisel Kemahlı

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Now showing 1 - 5 of 5
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    Publication
    Human-brown bear conflicts in Türkiye are driven by increased human presence around protected areas
    (ELSEVIER, 2024) Kusak, Josip; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Sıkdokur, Ercan; Çeltik, Elif; Aytekin, M. Çisel Kemahlı; Sağlam, İsmail Kudret; Şekercioğlu, Çağan Hakkı; College of Sciences; Graduate School of Sciences and Engineering
    Human-wildlife conflict has become a major challenge to conservation efforts around the world. Brown bears (Ursus arctos), which globally suffer from reduced habitat suitability and quality, frequently conflict with humans. These animals need large home ranges to fulfil their habitat requirements. When space and food are restricted, brown bears frequently shift towards human-dominated landscapes that offer reliable food sources. T & uuml;rkiye, a country with predominantly human-dominated landscapes, experiences frequent human-brown bear conflicts (HBCs). However, there has been no formal analysis of the nature and scope of these conflicts at the country level. Using HBC data from 2017 to 2022, we analyzed the spatial and temporal dynamics of HBC events in T & uuml;rkiye , constructing a risk map based on anthropogenic variables and geographic profiling to identify the driving forces. HBC events did not show any annual or seasonal trends but displayed considerable variation across biogeographic regions, with the highest incidence concentrated along the Black Sea coast and in Eastern Anatolia. Sixty percent of all conflicts were due to bear foraging behavior in or near human settlements while 12 % were the result of human activity in forests, with 57% of all conflict events resulting in direct injury to either humans or bears. Our analyses showed proximity to villages, protected areas, farmland, and the human footprint to be pivotal factors influencing conflict risk. Approximately 21% of the country's territory is susceptible to human-bear conflicts, with a substantial portion (43%) of these risks manifesting within a 10-km radius around protected areas. In conclusion, our findings suggest that the high occurrence of HBCs in T & uuml;rkiye primarily stems from the limited availability of natural habitats and resources for brown bears, compounded by increased human encroachment in and around core bear habitats.
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    Publication
    Monitoring the world's bird populations with community science data
    (Elsevier, 2020) Horns, Joshua J.; Adler, Frederick R.; Neate-Clegg, Montague H. C; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Şekercioğlu, Çağan Hakkı; Aytekin, M. Çisel Kemahlı; Faculty Member; PhD Student; College of Sciences; Graduate School of Sciences and Engineering; 327589; N/A
    Systematic monitoring of species across their geographic ranges is a critical part of conservation but it is resource-intensive, costly, and difficult to organize and maintain in the long-term. Large-scale community science programs like eBird may improve our ability to monitor bird populations, particularly in tropical regions where formal studies are lacking. Here, we estimated population trends for nearly 9000 bird species using global eBird birdwatching data and compared our trends to the population trends designated by BirdLife International. We calculated the rate of agreement between eBird and BirdLife trends and examined the effects of latitudinal affiliation, threat status, number of eBird checklists, eBird trend, BirdLife trend and BirdLife trend derivation on the rate of agreement. We also used a randomization approach to compare observed rates of agreement with the rates of agreement expected by chance alone. We show that the rate of agreement was marginally better than expected by chance and improved significantly for temperate region species of Least Concern with more checklists, and species that eBird or BirdLife identified as increasing. Our results suggest that eBird data are not currently adequate for monitoring populations of the majority of the world's bird species, especially in the developing world where systematic surveys are essential. Increased local participation in community science initiatives like eBird may improve our ability to effectively monitor species. Furthermore, it is important to assess the accuracy of BirdLife trends and the manner in which they are derived, especially for species where BirdLife and eBird data trends disagree.
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    PublicationOpen Access
    Growth of non-English-language literature on biodiversity conservation
    (Wiley, 2022) Chowdhury, S.; Gonzalez, K.; Baek, S.Y.; Be?cik, M.; Bertolino, S.; Duijns S.; Han Y.; Jantke, K. Katayose, R.; Lin, M.M.; Nourani, E.; Ramos, D.L.; Rouyer, M.O.; Sidemo Holm, W.; Vozykova, S. Zamora-Gutierrez, V.; Amano T.; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Aytekin, M. Çisel Kemahlı; Undergraduate Student; Faculty Member; College of Sciences
    English is widely recognized as the language of science, and English-language publications (ELPs) are rapidly increasing. It is often assumed that the number of non-ELPs is decreasing. This assumption contributes to the underuse of non-ELPs in conservation science, practice, and policy, especially at the international level. However, the number of conservation articles published in different languages is poorly documented. Using local and international search systems, we searched for scientific articles on biodiversity conservation published from 1980 to 2018 in English and 15 non-English languages. We compared the growth rate in publications across languages. In 12 of the 15 non-English languages, published conservation articles significantly increased every year over the past 39 years, at a rate similar to English-language articles. The other three languages showed contrasting results, depending on the search system. Since the 1990s, conservation science articles in most languages increased exponentially. The variation in the number of non-English-language articles identified among the search systems differed markedly (e.g., for simplified Chinese, 11,148 articles returned with local search system and 803 with Scopus). Google Scholar and local literature search systems returned the most articles for 11 and 4 non-English languages, respectively. However, the proportion of peer-reviewed conservation articles published in non-English languages was highest in Scopus, followed by Web of Science and local search systems, and lowest in Google Scholar. About 20% of the sampled non-English-language articles provided no title or abstract in English; thus, in theory, they were undiscoverable with English keywords. Possible reasons for this include language barriers and the need to disseminate research in countries where English is not widely spoken. Given the known biases in statistical methods and study characteristics between English- and non-English-language studies, non-English-language articles will continue to play an important role in improving the understanding of biodiversity and its conservation.
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    PublicationOpen Access
    Tapping into non-English-language science for the conservation of global biodiversity
    (Public Library of Science, 2021) Amano, Tatsuya; Berdejo-Espinola, Violeta; Christie, Alec P.; Willott, Kate; Akasaka, Munemitsu; Baldi, Andras; Berthinussen, Anna; Bertolino, Sandro; Bladon, Andrew J.; Chen, Min; Choi, Chang-Yong; Kharrat, Magda Bou Dagher; de Oliveira, Luis G.; Farhat, Perla; Golivets, Marina; Aranzamendi, Nataly Hidalgo; Jantke, Kerstin; Kajzer-Bonk, Joanna; Khorozyan, Igor; Kito, Kensuke; Konno, Ko; Lin, Da-Li; Littlewood, Nick; Liu, Yang; Liu, Yifan; Loretto, Matthias-Claudio; Marconi, Valentina; Martin, Philip A.; Morgan, William H.; Narvaez-Gomez, Juan P.; Negret, Pablo Jose; Nourani, Elham; Ochoa Quintero, Jose M.; Ockendon, Nancy; Oh, Rachel Rui Ying; Petrovan, Silviu O.; Piovezan-Borges, Ana C.; Pollet, Ingrid L.; Ramos, Danielle L.; Segovia, Ana L. Reboredo; Nayelli Rivera-Villanueva, A.; Rocha, Ricardo; Rouyer, Marie-Morgane; Sainsbury, Katherine; Schuster, Richard; Schwab, Dominik; Seo, Hae-Min; Shackelford, Gorm; Shinoda, Yushin; Smith, Rebecca K.; Tao, Shan-dar; Tsai, Ming-shan; Tyler, Elizabeth H. M.; Vajna, Flora; Valdebenito, Jose Osvaldo; Vozykova, Svetlana; Waryszak, Pawel; Zamora-Gutierrez, Veronica; Zenni, Rafael D.; Zhou, Wenjun; Sutherland, William J.; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Şekercioğlu, Çağan Hakkı; Aytekin, M. Çisel Kemahlı; Faculty Member; College of Sciences; Graduate School of Sciences and Engineering; 327589; N/A
    The widely held assumption that any important scientific information would be available in English underlies the underuse of non-English-language science across disciplines. However, non-English-language science is expected to bring unique and valuable scientific information, especially in disciplines where the evidence is patchy, and for emergent issues where synthesising available evidence is an urgent challenge. Yet such contribution of non-English-language science to scientific communities and the application of science is rarely quantified. Here, we show that non-English-language studies provide crucial evidence for informing global biodiversity conservation. By screening 419,679 peer-reviewed papers in 16 languages, we identified 1,234 non-English-language studies providing evidence on the effectiveness of biodiversity conservation interventions, compared to 4,412 English-language studies identified with the same criteria. Relevant non-English-language studies are being published at an increasing rate in 6 out of the 12 languages where there were a sufficient number of relevant studies. Incorporating non-English-language studies can expand the geographical coverage (i.e., the number of 2 degrees x 2 degrees grid cells with relevant studies) of English-language evidence by 12% to 25%, especially in biodiverse regions, and taxonomic coverage (i.e., the number of species covered by the relevant studies) by 5% to 32%, although they do tend to be based on less robust study designs. Our results show that synthesising non-English-language studies is key to overcoming the widespread lack of local, context-dependent evidence and facilitating evidence-based conservation globally. We urge wider disciplines to rigorously reassess the untapped potential of non-English-language science in informing decisions to address other global challenges.
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    PublicationOpen Access
    The first record of raccoon dog (Nyctereutes procyonoides) in Turkey
    (TÜBİTAK, 2020) Çoban, Emrah; Kuşak, Josip; Chynoweth, Mark; Ağırkaya, İsmail Kayahan; Güven, Neslihan; Çoban, Ayşegül; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Şekercioğlu, Çağan Hakkı; Aytekin, M. Çisel Kemahlı; Faculty Member; College of Sciences; Graduate School of Sciences and Engineering
    The raccoon dog (Nyctereutes procyonoides) was recorded for the first time in Turkey on May 10, 2019, and June 5, 2019, in the same location after 4668 nights of camera trapping in the forests of the Sarikamis region and Allahuekber Mountains in eastern Turkey. It was recorded in a Scots pine (Pinus sylvestris) forest at 2340 m above sea level with extensive snow cover. Given that the nearest known population is in the forests of Georgia approximately 105 km away, there may already be a viable population in Turkey. As an omnivorous species with a high adaptive ability and high reproductive potential, the raccoon dog has strong dispersal capability. It is considered an invasive species in Europe and there are some ongoing eradication activities in several countries. Therefore, we strongly advise that the raccoon dog in Turkey be evaluated as an invasive species and that the relevant authorities conduct extensive research and any necessary management, especially where the habitat and local climate are more favorable for the species' reproduction and range expansion.