يعرض 1 - 10 نتائج من 61 نتيجة بحث عن '"Karaardiç, Hakan"', وقت الاستعلام: 0.88s تنقيح النتائج
  1. 1
    دورية أكاديمية

    المؤلفون: Karaardıç, Hakan

    المساهمون: ALKÜ, Enstitüler, Lisansüstü Eğitim Enstitüsü, Matematik ve Fen Bilimleri Eğitimi Ana Bilim Dalı

    مصطلحات موضوعية: Migration, wintering, capture-recapture, Southern Turkey

    الوصف: The European Robin (Erithacus rubecula) is a partial migrant in Central Europe and the Eastern Mediterranean known as a wintering area. Little is known about the behaviour in the winter. I assessed the wintering phenology by using capture-recapture methods in a coastal area in southern Turkey. Over three wintering seasons, 76 European Robins were captured with mist-nets. Ten of them were recaptured in the following wintering seasons and another after two seasons. Recaptures peaked in November (26.5%) and December (26.5%) and then declined progressively to February (14.7%). Our results suggest a high level of site fidelity in the wintering area in subsequent years.

    وصف الملف: application/pdf

    العلاقة: https://doi.org/10.1080/09397140.2021.2021657Test; Zoology in the Middle East; Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı; https://hdl.handle.net/20.500.12868/1543Test; 68; 22; 25

  2. 2
    دورية أكاديمية

    المصدر: Proceedings of the Royal Society B: Biological Sciences; 11/1/203, Vol. 290 Issue 2010, p1-11, 11p

    مصطلحات موضوعية: PALEARCTIC, DATA loggers, WEATHER, TWILIGHT, LUMINOUS flux

    مستخلص: Recent studies have suggested the presence of moonlight mediated behaviour in avian aerial insectivores, such as swifts. Here, we use the combined analysis of state-of-the-art activity logger data across three swift species, the common, pallid and alpine swifts, to quantify flight height and activity in responses to moonlight-driven crepuscular and nocturnal light conditions. Our results show a significant response in flight heights to moonlight illuminance for common and pallid swifts, i.e. when moon illuminance increased flight height also increased, while a moonlight-driven response is absent in alpine swifts. We show a weak relationship between night-time illuminance-driven responses and twilight ascending behaviour, suggesting a decoupling of both crepuscular and night-time behaviour. We suggest that swifts optimize their flight behaviour to adapt to favourable night-time light conditions, driven by light-responsive and size-dependent vertical insect stratification and weather conditions. [ABSTRACT FROM AUTHOR]

    : Copyright of Proceedings of the Royal Society B: Biological Sciences is the property of Royal Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

  3. 3
    دورية أكاديمية
  4. 4
    دورية أكاديمية

    المساهمون: ALKÜ, 0-belirlenecek

    الوصف: Liechti, Felix/0000-0001-9473-0837 ; WOS: 000595749100009 ; For migratory birds optimal timing of the onset of reproduction is vital, especially when suitable conditions for reproduction occur only for a short while during the year. With increasing latitude the suitable period becomes shorter and we expect the organization of annual cycle to be more synchronized to the local conditions across individuals of same population. This should result in low variation of arrival and departure date in breeding sites at higher latitudes. We quantify the temporal and geographical variation in pre- and post-breeding migration between individuals from four different populations of alpine swifts Tachymarptis melba along a latitudinal gradient. We tracked 215 individuals in three years with geolocators. The two western and two eastern populations showed separate migratory flyways and places of residence in Africa. Length of stay at the breeding sites was negatively correlated with latitude and differed by more than a month between populations. Duration of migration was similarly short in all populations (median 6.2 days in autumn and 8.7 days in spring). However, variation in timing of migration was unrelated to latitude and individuals everywhere arrived in the same asynchrony at the breeding site. ; Swiss federal office for the environment (FOEN) [UTF 400.34.11]; Wolfermann-Nageli foundation ; The Swiss federal office for the environment (FOEN) contributed financial support for the development of the tags (grant UTF 400.34.11). The Wolfermann-Nageli foundation granted supported for fieldwork.

    العلاقة: Journal of Avian Biology; Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı; https://doi.org/10.1111/jav.02515Test; https://hdl.handle.net/20.500.12868/394Test; 51; 11

  5. 5
    أخبار

    الوصف: Not Available ; Turkish Ministry of Agriculture and Forestry, General Directorate of Nature Conservation and National Parks [72784983-488.04-55718/ 07.03.2017] ; We would like to thank Mehmet Karaca, Elif Hilal Duran Tunc, Abdullah Emre Tuna and Osman Karademir, who helped us during the field work. This study was carried out within the scope of scientific research and ringing permission obtained from the Turkish Ministry of Agriculture and Forestry, General Directorate of Nature Conservation and National Parks (Document No: 72784983-488.04-55718/ 07.03.2017).

    العلاقة: Zoology In The Middle East; DiÄŸer; https://doi.org/10.1080/09397140.2022.2030533Test; https://hdl.handle.net/11499/46685Test; 68; 91; 94; 2-s2.0-85124081127; WOS:000747623500001

  6. 6

    الوصف: Recent studies have suggested the presence of moonlight mediated behaviour in avian aerial insectivores, such as swifts. At the same time swift species also show differences in prey (size) preferences. Here, we use the combined analysis of state-of-the-art activity logger data across three swift species, the Common, Pallid and Alpine swifts, to quantify flight height and activity responses to crepuscular and nocturnal light conditions. Our results show a significant response in flight heights to moonlight illuminance for Common and Pallid swifts, while a moonlight driven response is absent in Alpine swifts. Swift flight responses followed the size dependent altitude gradient of their insect prey. We show a weak relationship between night-time illuminance driven responses and twilight ascending behaviour, suggesting a decoupling of both crepuscular and night-time behaviour. We suggest that swifts optimise their flight behaviour to adapt to favourable night-time light conditions, driven by light responsive and size-dependent vertical insect stratification and weather conditions. You are required to cite both the Zenodo data repository as well as the BioRXiv pre-print when using this data, as: Hufkens et al. 2023. Moonlight synchronous flights across three western palearctic swifts mirror size dependent prey preferences. doi://10.5281/zenodo.7814214 Hufkens et al. 2023. Moonlight synchronous flights across three western palearctic swifts mirror size dependent prey preferences. bioRxiv 2023.04.25.538243; doi: https://doi.org/10.1101/2023.04.25.538243Test Use This is a deposited version of the releases on Github. Either download this Zenodo repository or clone or download the project Github zip file. git clone https://github.com/bluegreen-labs/swift_lunar_synchrony.gitTest Unzip the downloaded data if required. The repository is an `R` project and can be opened in RStudio, which will set the correct relative path. Data structure & analysis Analysis data is saved as compressed R serial files (.rds) in the `data` ...

  7. 7
    دورية أكاديمية

    المصدر: Meier, Christoph; Karaardic, Hakan; Aymi, Raül; Peev, Strahil G.; Bächler, Erich; Weber, Roger; Witvliet, Willem; Liechti, Felix (2018). What makes Alpine swift ascend at twilight? Novel geolocators reveal year-round flight behaviour Behavioral Ecology and Sociobiology, 72(3) Springer 10.1007/s00265-017-2438-6

    وصف الملف: application/pdf

    العلاقة: https://arbor.bfh.ch/6778Test/; Meier, Christoph; Karaardic, Hakan; Aymi, Raül; Peev, Strahil G.; Bächler, Erich; Weber, Roger; Witvliet, Willem; Liechti, Felix (2018). What makes Alpine swift ascend at twilight? Novel geolocators reveal year-round flight behaviour Behavioral Ecology and Sociobiology, 72(3) Springer 10.1007/s00265-017-2438-6

  8. 8
    دورية أكاديمية

    المصدر: Volume: 6, Issue: 2 232-236 ; 2602-456X ; Kommagene Biyoloji Dergisi ; Commagene Journal of Biology

    الوصف: Urbanization and fisheries affected a rapid increase in seagull populations in western Mediterranean populations of the yellow-legged gull. The main reason is the increased food resources such as fisheries, big ports, and dumps. In this study, we aimed to understand and to compare the breeding biology of the yellow-legged gull in eastern Mediterranean. We studied on the small island in southwestern Türkiye between 2013 and 2015. All nesting sites were determined, marked, and monitored once a week. The breeding season has started in late February, nesting and laying eggs have started at the beginning of March, and they left the island in the second half of June after fledging. The incubation period is 29.17±2.85 days, only one clutch in a season and 2 or 3 eggs were laid in the nests. There was a slight increase in the number of pairs and nests between years but there is no significant difference in all parameters such as laying date, clutch size, hatching and fledging success in Pırasalı Island population and the rate of both hatching and fledging success are lower than western Mediterranean populations. While predation is the weakest factor for lower breeding success, intraspecific predation may be the factor but the main effect is the lower food abundance for the hatchlings. ; Kentleşme ve balıkçılık Gümüş martı populasyonlarının Batı Akdeniz’de hızla artmasında etkili olmuştur. Balıkçılık, büyük limanlar ve çöplükler gibi artan gıda kaynakları bu artışın ana sebepleridir. Bu çalışmada, Doğu Akdeniz’de kuluçkaya yatan Gümüş martı üreme biyolojisini belirlemek ve karşılaştırma yapmak amaçlanmıştır. Türkiye’nin güneybatısında yer alan küçük bir ada popülasyonu 2013-2015 yıllarında çalışılmıştır. Tüm yuva alanları tespit edilmiş, işaretlenmiş ve haftada bir gün izlenmiştir. Üreme dönemi Şubat ayı sonlarında başlamış, yuva yapımı ve yumurta bırakma mart ayı başlarında gerçekleşmiş ve yavruların uçmasıyla birlikte tüm popülasyon Haziran ayının ikinci yarısında adadan ayrılmıştır. Kuluçka süresi 29.17±2.85 gün, ...

    وصف الملف: application/pdf

  9. 9
    دورية أكاديمية
  10. 10
    دورية أكاديمية

    العنوان البديل: Türkiye’nin Güneybatısında Küçük Bir Ada Populasyonu örneğinde Gümüş Martı (Larus michahellis, Naumann, 1840) Üreme Biyolojisi. (Turkish)

    المصدر: Commagene Journal of Biology; Dec2022, Vol. 6 Issue 2, p232-236, 5p

    مصطلحات جغرافية: TURKEY

    الملخص (بالإنجليزية): Urbanization and fisheries affected a rapid increase in seagull populations in western Mediterranean populations of the yellow-legged gull. The main reason is the increased food resources such as fisheries, big ports, and dumps. In this study, we aimed to understand and to compare the breeding biology of the yellow-legged gull in eastern Mediterranean. We studied on the small island in southwestern Türkiye between 2013 and 2015. All nesting sites were determined, marked, and monitored once a week. The breeding season has started in late February, nesting and laying eggs have started at the beginning of March, and they left the island in the second half of June after fledging. The incubation period is 29.17±2.85 days, only one clutch in a season and 2 or 3 eggs were laid in the nests. There was a slight increase in the number of pairs and nests between years but there is no significant difference in all parameters such as laying date, clutch size, hatching and fledging success in Pırasalı Island population and the rate of both hatching and fledging success are lower than western Mediterranean populations. While predation is the weakest factor for lower breeding success, intraspecific predation may be the factor but the main effect is the lower food abundance for the hatchlings [ABSTRACT FROM AUTHOR]

    Abstract (Turkish): Kentleşme ve balıkçılık Gümüş martı populasyonlarının Batı Akdeniz’de hızla artmasında etkili olmuştur. Balıkçılık, büyük limanlar ve çöplükler gibi artan gıda kaynakları bu artışın ana sebepleridir. Bu çalışmada, Doğu Akdeniz’de kuluçkaya yatan Gümüş martı üreme biyolojisini belirlemek ve karşılaştırma yapmak amaçlanmıştır. Türkiye’nin güneybatısında yer alan küçük bir ada popülasyonu 2013-2015 yıllarında çalışılmıştır. Tüm yuva alanları tespit edilmiş, işaretlenmiş ve haftada bir gün izlenmiştir. Üreme dönemi Şubat ayı sonlarında başlamış, yuva yapımı ve yumurta bırakma mart ayı başlarında gerçekleşmiş ve yavruların uçmasıyla birlikte tüm popülasyon Haziran ayının ikinci yarısında adadan ayrılmıştır. Kuluçka süresi 29.17±2.85 gün, üreme döneminde sadece bir kuluçka gerçekleştirilmiş ve yuvalara 2 veya 3 yumurta bırakılmıştır. Pırasalı Adası popülasyonunda yıllar arasında çift sayıları ve yuva sayıları açısından küçük bir artış olmasına rağmen, yumurta bırakma tarihi, kuluçka sayısı, yumurtadan çıkan yavru başarısı ve yuvadan uçan yavru başarısı parametrelerinde istatistiksel anlamda bir farklılık bulunmamıştır. Yumurtadan çıkan yavru başarısı ve yuvadan uçan yavru başarısı oranları Batı Akdeniz popülasyonlarından daha düşüktür. Predasyon düşük üreme başarısı için düşük bir faktörken, tür içi predasyon belki etkili olabilir, ancak yumurtadan çıkan yavrular için düşük besin bolluğu temel etkidir. [ABSTRACT FROM AUTHOR]

    : Copyright of Commagene Journal of Biology is the property of Adiyaman Scientific Research Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)