Search

Büyük Toykuşu (Otis tarda, Linneaus 1758), IUCN tarafından Avrupa’da ‘Asgari Endişe Verici’ ve Dünya çapında ‘Hassas’ olarak sınıflandırılan ve hem CITES hem de Bern sözleşmesinde EK-II’de (Kesin Koruma Altındaki Fauna Türleri) listelenen bir kuş türüdür. Son tahminlere göre Türkiye populasyonu, 44.000-57.000 birey ile temsil edilen dünya populasyonunun sadece %1-2’sini oluşturmaktadır. Bu populasyon çalışması, Mart 2013-Ocak 2020 tarihleri arasında, Eskişehir, Kütahya ve Afyonkarahisar illerinde 7 farklı lokasyonda gerçekleştirilmiştir. Özetle, incelenen alanların toplam 205 bireyden oluşan bir kışlama populasyonuna, toplam 100 bireyden oluşan bir üreme populasyonuna ve toplam 70 bireyden oluşan bir yazlama populasyona sahip olduğu kaydedildi. İncelenen alanlar kışlama döneminde Türkiye nüfusunun ortalama %17-29'unu, üreme döneminde Türkiye nüfusunun ortalama %8-14'ünü ve yazlama döneminde Türkiye nüfusunun ortalama %6-10'unu temsil etmektedir. Çalışma alanlarında Büyük Toykuşu populasyonunun azalmasını önlemek için acil koruyucu önlemlerin uygulanması gerekmektedir. Sadece nüfus düşüşünü durdurmak için değil, aynı zamanda nüfus artışını sağlıklı seviyelere çıkarmak için yeni tedbirler oluşturmanın bir yolu olarak türler üzerinde detaylı etolojik çalışmalar önerilmektedir., The Great Bustard (Otis tarda, Linneaus 1758) is a bird species categorized as “Least Concern” in Europe and “Vulnerable” in the world by the IUCN and listed in both CITES and the Bern Convention Annex II. According to the latest estimates, Turkey’s population makes up only 1-2% of the global population, which is represented by 44.000-57.000 individuals. This population study was carried out in 7 different locations in Eskişehir, Kütahya, and Afyonkarahisar provinces between March 2013 and January 2020. In summary, the surveyed areas were recorded as having a total wintering population of 205 individuals, a total breeding population of 100 individuals, and a total summering population of 70 individuals. The surveyed areas represent an average of 17-29% of Turkey’s population in wintering period, an average of 8-14% of Turkey’s population in breeding period, and an average of 6-10% of Turkey’s population in summering period. Urgent implementation of protective measures is required to prevent the population decline of the Great Bustard within the study areas. Detailed ethological studies on the species are recommended as a means of creating new measures to not only stop population decline but to promote population growth to healthy levels.

Batı Palearktik bölgede ki en ağır kuşlardan biri olan Toy kuşları için aerodinamik etkiler dağılımlarında ve korunmalarında oldukça önemlidir. Bu çalışmada, dinlenme ve beslenme zamanlarında neden açık alanları seçtikleri aerodinamik özellikleri bakımından tartışılmıştır. Ağırlığına göre küçük kanatlara sahip olan Toy kuşları çok daha zayıf bir uçuş performansına sahiptirler. Bu çalışmada bu dezavantajlar aerodinamik yaklaşım ve gözlemlerle açıklanmıştır. Bu dezavantajları kapatmak için Toy kuşları kalkış esnasında bağıl rüzgârları kullanmışlardır. Ayrıca kalkış performansına etki eden aynı aerodinamik özellikler kuşun davranışına etki eden dönüş performansını da etkilemektedir. Sonuç olarak türün duyarlı statüde olmasındaki en önemli etkenlerden biride aerodinamik özellikleridir., Great Bustard is one of the heaviest birds in the Western Palearctic, so aerodynamic effects are critically important for their distribution and conversation. To understand why do they need to find open areas during the resting and feeding time, aerodynamic features were discussed in this study. Mass of the Great Bustard and having proportionally small wings cause weak flight performance. In this work, those disadvantages were identified by aerodynamic approach and observation. Great Bustard tries to use the relative wind during the take-off to close these disadvantages. Also, turning performance which is affected by the same specifications with take-off performance can determine their behavior. As a result, aerodynamic factors may also play important role in their current status.

Diabetes is a type of disease which adversely affects the circulation of blood at the tissues and eventually causes tissue damage because of vascular complications. The tissue damage, which is caused by diabetes, has negative effects on some of the important organs such as eyes and kidneys, and as well as on the skin. High level of blood sugar, which is encountered in unregulated diabetes, effects skin surgeries (i.e: skin flaps) negatively. TENS method (Transcutaneus Electrical Nevre Stimulation), which is used for treatment of pain, pruritus, neuropathy, etc., since many years, is also used for problems such as wound healing and insufficient blood flow in skin. In our study, TENS‘ effect on reduction of flap necrosis was investigated on Wistar albino rats, which were experimentally induced diatebetes via intraperitonal injection of single dose of 60 mg/kg Streptozotocin (STZ). As a result of the experiments, it was observed that, TENS current reduced flap necrosis in control group. However, in the rats which were induced experimentally via STZ, a significant flap healing wasn‘t observed. Also, in our study, it was found that, inflammation decreased in diabetic rats which were exposed to TENS. Diabetes is a type of disease which adversely affects the circulation of blood at the tissues and eventually causes tissue damage because of vascular complications. The tissue damage, which is caused by diabetes, has negative effects on some of the important organs such as eyes and kidneys, and as well as on the skin. High level of blood sugar, which is encountered in unregulated diabetes, effects skin surgeries (i.e: skin flaps) negatively. TENS method (Transcutaneus Electrical Nevre Stimulation), which is used for treatment of pain, pruritus, neuropathy, etc., since many years, is also used for problems such as wound healing and insufficient blood flow in skin. In our study, TENS‘ effect on reduction of flap necrosis was investigated on Wistar albino rats, which were experimentally induced diatebetes via intraperitonal injection of single dose of 60 mg/kg Streptozotocin (STZ). As a result of the experiments, it was observed that, TENS current reduced flap necrosis in control group. However, in the rats which were induced experimentally via STZ, a significant flap healing wasn‘t observed. Also, in our study, it was found that, inflammation decreased in diabetic rats which were exposed to TENS.

In the study conducted between December 2008 and April 2011 in Eskişehir, which is located in Northeast of Anatolia, 254 species, belonging to 58 families 18 ordos - class which live in forest, wetland, mountain and stepe ecosystems, were recorded. Species’ status’ are as follows: 135 residents R , 73 summer visitors M and 32 winter visitors W , 4 vagrants V and 10 Transit migrants T . When species’ danger status in Red Data Book of Turkiye was checked, it was determined that 231 species were under threat and their IUCN status was found to be: Endangered=1, Critically=none, Vulnerable=4, Least Concern =241, NT=8