Cobanoglu Gulsah, Sevgi Orhan
Department of Biology, Faculty of Arts and Science, University of Marmara, Goztepe Campus, Kadikoy-Istanbul, Turkey.
J Environ Biol. 2009 Mar;30(2):205-12.
In order to evaluate environmental factors limiting distribution of species, diversity of epiphytic lichens was studied in 34 sites along an altitudinal gradient from 1300 to 1900 m on north-facing and south-facing slopes of Elmali Cedar Research Forest (Antalya province, Turkey) regarding the dispersion of lichens in different tree-diameter classes (0-15 cm, 15-30 cm, 30-45 cm, 45-60 cm and >75 cm). The results showed that the relationship between diameter classes with the number of lichen species was R2=0.6022. The highest number of species was in the diameter class of 30-45 cm. There was a clear relationship between all parameters, diameter, altitude and aspect, with species richness. Changes in the community structure of the epiphytic lichen vegetation were detected along an altitudinal gradient revealing the highest species richness in the highest zone. The elevation affected both the number and the composition of the lichen communities and the relationship between the attitudinal zones with number of lichen species was designated as R2=0.6462. The number of species was higher in the north aspects than in the south aspects in all diameter classes. The species number depending on the altitude was also higher in the north-facing slopes than in the south-facing slopes.
为了评估限制物种分布的环境因素，在埃尔马利雪松研究林（土耳其安塔利亚省）北坡和南坡海拔1300至1900米的34个地点，研究了附生地衣的多样性，涉及不同树径等级（0 - 15厘米、15 - 30厘米、30 - 45厘米、45 - 60厘米和>75厘米）地衣的分布情况。结果表明，树径等级与地衣物种数量之间的关系为R2 = 0.6022。物种数量最多的是30 - 45厘米的树径等级。所有参数（直径、海拔和坡向）与物种丰富度之间都存在明显关系。沿海拔梯度检测到附生地衣植被群落结构的变化，显示最高海拔区域物种丰富度最高。海拔影响地衣群落的数量和组成，海拔区域与地衣物种数量之间的关系为R2 = 0.6462。在所有树径等级中，北坡的物种数量均高于南坡。取决于海拔的物种数量在北坡也高于南坡。
