Ecological indicator values of forest communities in Çitdere Region (Yenice-Karabük)

Ecological indicator values of forest communities in Citdere Region (Yenice-Karabuk) Abstract: Indicator species system, which has been used widely in Europe, has many advantages in vegetation analysis. It allows quick interpretation of ecological conditions using floristic data without doing any measurements about site conditions. Considering the amount of phytosociological studies carried out in Turkey, this system may provide important information about plants or plant communities if required modifications are done. In this study, Pignatti-Ellenberg indicator values (EIVs) modified for the check list of Flora Europea were used to analyse and compare forest communities of Citdere region in terms of light (radiation), temperature, moisture, continentality, soil reaction and soil nutrient in order to test how effectively mean EIVs indicate ecological conditions. Main differences were found between communities which occur on sunny and shady exposures in terms of moisture, soil nutrient, light and temperature indicator values. When normal and original permutation tests were used, all of six indicator values were significant. With the modified permutation test, only mean temperature and light indicator values showed significant differences among 8 forest communities of the region. Pinus sylvestris and Quercus petraea forest communities which have relatively narrow distribution area showed higher correlation with temperature and continentality indicator values when weighted average by species cover was used. Keywords: Ellenberg indicator values, ecology, plant sociology, vegetation analysis, site condition Citdere bolgesi (Yenice-Karabuk) orman toplumlarinin ekolojik gosterge degerleri Ozet: Vejetasyon analizi calismalarinda, Avrupa’da yaygin olarak kullanilan gosterge tur sisteminin pek cok avantaji bulunmaktadir. Bu sistem, floristik veriler kullanilarak ekolojik kosullar hakkinda herhangi bir olcum yapmadan kolayca yorum yapma imkani sunmaktadir. Turkiye’de yapilmis olan cok sayidaki bitki sosyolojisi calismalari dikkate alindiginda, gosterge turlerle ilgili bazi degisiklerin yapilmasi durumunda bitki toplumlarinin ya da turlerin gosterge degerleri hakkinda onemli bilgiler elde edilebilir. Bu calismada, Avrupa florasi icin duzenlenmis olan Pignatti-Ellenberg gosterge degerleri (EIVs) yardimiyla Citdere bolgesindeki orman toplumlarini; isik, sicaklik, nem, karasallik, toprak reaksiyonu ve toprak besin maddesi kriterleri bakimindan karsilastirarak, ortalama gosterge degerlerin ekolojik kosullari ne oranda yansittigi test edilmistir. Gunesli ve golgeli bakilarda yayilis gosteren toplumlar; nem, toprak besin maddesi, isik ve sicaklik gosterge degerleri bakiminda farkliliklar gostermistir. Normal parametrik ve permutasyon testleri kullanildiginda 6 gosterge degerinin tamami, modifiye edilmis permutasyon testi kullanildiginda ise sadece sicaklik ve isik ortalama gosterge degerleri bolgedeki 8 orman toplumu icin istatistiksel olarak farklilik gostermistir. Nispeten daha dar alanlarda yayilis gosteren Pinus sylvestris ve Quercus petraea orman toplumlari, ortme derecelerine gore agirliklandirilmis verinin kullanilmasiyla sicaklik ve karasallik gosterge degerleriyle daha fazla korelasyon gostermistir. Anahtar kelimeler: Ellenberg gosterge degerleri, ekoloji, bitki sosyolojisi, vejetasyon analizi, yetisme ortami Received (Gelis tarihi):  05.02.2015 -  Revised (Duzeltme tarihi):  01.07.2015 - Accepted (Kabul tarihi):  02.07.2015 To cite this article:  Coban, S., 2016. Ecological indicator values of forest communities in Zonguldak-Citdere region.  Journal of the Faculty of Forestry Istanbul University  66(1): 278-287. DOI: 10.17099/jffiu.60821