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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Jan + Mar 2010, 31 (1)                                     Back

Abstract_ 11

Site properties for Crimean juniper (Juniperus excelsa) in semi-natural

forests of south western Anatolia, Turkey


K?rsad Ozkan*1, Serkan Gulsoy1, Raf Aerts2 and Bart Muys2

1Department of Soil and Ecology, Faculty of Forestry, S?leyman Demirel University, 32260, Isparta, Turkey

2Division Forest, Nature and Landscape, Katholieke Universiteit Leuven, Leuven - 3001, Belgium

(Received: March 12, 2009 ; Revised received: May 20, 2009; Accepted: September 05, 2009)


Abstract: We explored the semi-natural forests in south western Anatolia along a gradient between Mediterranean and continental climates to determine the site requirements of Juniperus excelsa in Turkey.? We hypothesized that environmental variables and indicator species can be used to predict differences in occurrence and cover of J. excelsa and can therefore support decision making in reforestation management planning. Plant species composition and environmental variables were assessed in 153 plots.? Association between J. excelsa and other plant species and environmental variables were analyzed using Fisher exact probability tests and stepwise discriminant analysis. High altitude (> 1000 m) as a proxy for an Oromediterranean climate, and high surface stoniness as a proxy for low competition by other tree species, are positive site properties for J. excelsa.? The tree species avoids Eumediterranean and Supramediterranean plant communities.? Twelve plant species, including the herbs Dianthus zonatus, Ajuga chamaepitys and Paronchia carica and the shrub Cotoneaster nummularia may be used as site indicators for J. excelsa restoration.? Platanus orientalis, with similar site requirements but at present negatively associated to J. excelsa due to competitive effects, may be considered an additional indicator if stand conversion (harvesting and replacing P. orientalis) is part of the management plan.

Key words: Indicator species, Site classification, Site requirements, Land suitability, Mediterranean, Plant distribution, Reforestation, Discriminant analysis

????? ?PDF of full length paper is available online


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