İklim Değişikliğinin Boylu Ardıç Türünün Potansiyel Dağılımı Üzerindeki Etkisinin Kestirimi

Yıl 2020, Cilt: 20 Sayı: 2, 133 - 142, 29.09.2020

Serkan Özdemir Serkan Gülsoy Ahmet Mert

https://doi.org/10.17475/kastorman.801847

Cited By: 5

Öz

Çalışmanın amacı: Bu çalışmanın amacı Boylu ardıç (Juniperus excelsa M. BIEB.) türünün günümüz ve gelecek için potansiyel dağılımlarının iklim değişimine göre modellenmesidir.
Çalışma alanı: Çalışma Batı Akdeniz Bölgesi’nde bulunan Burdur, Isparta ve Antalya illerini kapsayan Göller Bölgesi içerisinde gerçekleştirilmiştir.
Materyal ve yöntem: çalışmada herhangi bir hastalık belirtisi olmayan, kozalak verimi ve boy gelişimi iyi olan, saf ve doğal 40 farklı boylu ardıç meşçeresi kayıt altına alınmıştır. Geleceğe yönelik kestirimler 2070 yılına ait olarak, Temsili Konsantrasyon Rotaları senaryoları için HadGEM2-ES projeksiyonundan temin edilen 19 biyoklima verisine göre gerçekleştirilmiştir. Modelleme işlemi için Maksimum Entropi (MaxEnt) yöntemi kullanılmıştır.
Temel sonuçlar: Modele ait AUC değeri 0.966 ± 0.028 olarak tespit edilmiştir. En Kurak Ayın Yağış Miktarı, Mevsimsel Sıcaklık, En Soğuk Üç Ayın Yağış Miktarı, En Sıcak Ayın Maksimum Sıcaklığı, Gündüz Sınıf Ortalaması değişkenleri modele katkı yapan değişkenlerdir. Modele göre Boylu ardıç türünün dağılımında ciddi bir azalma görülmektedir. Sonuç olarak, çalışmadan elde edilen bulgular iklim değişikliği senaryolarına göre gerçekleştirilecek biyolojik çeşitlilik ve ekosistem planlama çalışmaları için etkili bir altlık oluşturabilecektir.
Araştırma vurguları: İklim değişikliğinin gelecekte bitki türlerinin dağılımını nasıl etkileyeceğini anlamak ekolojik araştırmalar açısından önem arz etmektedir. İklim değişikliği senaryoları bu belirsizliği ortadan kaldırmak için en çok tercih edilen parametrelerdir. Boylu ardıç türünün de iklim değişikliğinden etkileneceği ve dağılımının önemli ölçüde azalacağı öngörülmektedir.

Anahtar Kelimeler

İklim Değişikliği, Boylu Ardıç, Maksimum Entropi, Temsili Konsantrasyon Rotaları (TKR

Predicting the Effect of Climate Change on the Potential Distribution of Crimean Juniper

Öz

Aim of study: The main purpose of the present study is to model present and future potential distribution areas of the Crimean juniper (Juniperus excelsa M. BIEB.) under climate change.
Area of study: The study was carried out in the Lakes District that covers Burdur, Isparta and Antalya provinces in the west of the Mediterranean region.
Material and methods: During the study, the inventory data of 40 productive juniper stands in the region were collected. The future projections for the study area were made for the year 2070 with all Representative Concentration Pathways (RCPs) scenarios and 19 bioclimatic predictors from HadGEM2-ES. Modeling process was performed by using the Maximum Entropy (MaxEnt) method.
Main results: The AUC value of the model was determined as 0.966 ± 0.028. The model identified that Precipitation of Driest Month, Temperature Seasonality, Precipitation of Coldest Quarter, Max Temperature of Warmest Month, Mean Diurnal Range were the major variables influencing the current and future distributions of the species. According to the models, there will be a dramatic decrease in the potential distribution of the Crimean juniper. Consequently, the results from all these studies will be able to create an effective base for the biodiversity and ecosystem planning studies to be realized according to the climate change scenarios.
Highlights: Understanding how climate change will affect the distribution of plant species in the future is an important topic in ecological researches. Climate change scenarios are the most preferred parameters to remove this uncertainty. It is predicted that the Crimean juniper will be affected by climate change and its distribution will decrease dramatically.

Anahtar Kelimeler

Climate Change, Crimean Juniper, Maximum Entropy, Representative Concentration Pathways (RCPs)

Kaynakça

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