Volume 3, Issue 7 (6-2014)                   2014, 3(7): 41-53 | Back to browse issues page

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Parsaei F, Varasteh Moradi H, Rezaei H R. The Effects of Different Forest Loggings on Forest Birds Community Composition in Shastkolateh Forest, Gorgan . Iranian Journal of Applied Ecology 2014; 3 (7) :41-53
URL: http://ijae.iut.ac.ir/article-1-472-en.html
Abstract:   (8450 Views)
The species composition of a bird community is dependent upon many factors. Within any geographic area, vegetation structure may be the most important factor. The changes of bird community composition based on foraging behavior in relation to 3 different harvesting systems, including strip cutting, group selection logging, and single tree selection logging, was evaluated in a virgin area in this study. Birds and environmental variables were detected within 103 circle sampling plots with 25m radius. Based on the results, 4 groups of birds were observed in treatments based on the foraging behavior. Group 1 was ground foragers, group 2 consisted of foliage gleaning, group 3 included flycatchers, and group 4 represented bark foraging. The first group had the highest abundance in the strip treatment. The second group in group selection treatment, and the third and fourth groups had the highest abundance in the virgin area and then, in single tree selection treatment. The first group showed the highest correlation with shrub and herb or grass layer, stone cover and the number of trees 10-20m in height. The second, third and fourth groups showed the highest correlation with the number of trees>20m in height, basal areas, dead trees number, and the number of fagus trees. The results showed the single cutting treatment had a relatively minor effect on mature forest bird species and were more appropriate and sustainable methods to reduce the negative effects of forest harvesting on the birds.
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Type of Study: Applicable | Subject: General

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