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Alireza Naqinezhad

Alireza Naqinezhad

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Science
Address: Department of Biology, University of Mazandaran
Phone: 01135302459

Research

Title
Environmental factors–ecological species group relationships in the Surash lowland-mountain forests in northern Iran
Type
JournalPaper
Keywords
.
Year
2017
Journal NORDIC JOURNAL OF BOTANY
DOI
Researchers Fatemeh Bazdid Vahdati ، Shahryar Saeidi Mehrvarz ، Daniel Dey ، Alireza Naqinezhad

Abstract

Identification of the primary factors that influence the ecological distribution of species groups is important to managers of lowland-mountain forests in northern Iran. The aim of this study was to identify main ecological species groups, describe the site conditions associated with these species groups and the relationships between environmental factors and the distribution of ecological species groups using multi-variate analysis (Detrended correspondence analysis (DCA) and Canonical correspondence analysis (CCA)). For this purpose, 50 relevés (400 m2 each) were sampled using the Braun- Blanquet method. Vegetation was classified into three ecological species groups using a modified two-way indicator species analysis (TWINSPAN). In each relevé, environmental factors (topographic and soil variables) were measured and analysed using one-way ANOVA and Pearson r statistics. Further, species diversity indices were determined for the identified ecological species groups. Our results show that the environmental factors, e.g. elevation, slope, slope aspect, soil texture, pH and organic matter, were the most important factors explaining the distribution of the three ecological species groups in the study area. The diversity of the ecological species groups decreased with elevation. The results provide an ecological basis for forest management and for developing strategies for forest conservation in the study area.