The Oak genus (Quercus L.) is one of the most important genera of beach family (Fagaceae) that has ecological and economical importance. Chestnutleaf oak (Quercus castaneifolia C.A. Mey.) is native to Iran and distributed in Hyrcanian forests. Pure and mixed stands of this taxon have covered about 6.5 % of Hyrcanian forests. This study was undertaken to evaluate the effects of ecological factor...

Forest types mapping, is one of the most necessary elements in the forest management and silviculture treatments. Traditional methods such as field surveys are almost time-consuming and cost-intensive. Improvements in remote sensing data sources and classification –estimation methods are preparing new opportunities for obtaining more accurate forest biophysical attributes maps. This research co...

The genus Dolichocephala Macquart, 1823 of the family Empididae is recorded for first time from Iran and Azerbaijan, including one species D. monae Joost, 1981. A neighbour-joining tree based on genetic divergences CO1 gene within nine provided. In addition, Oropezella Collin, 1926 Hybotidae (one O. sphenoptera (Loew, 1873)) two subgenus Empis s. str. Linnaeus, 1758 (E. (E.) earina 1960 E. temr...

Humus forms are good indicators of environmental conditions and thus important in forest ecological processes. Altitudinal gradients considered as natural laboratory for evaluating soil processes humus form distribution. The objective this study was to evaluate the macromorphology along an altitudinal gradient (0-2000 m a.s.l.) covered with plain forest, mixed pure forests forest-grassland ecot...

Saproxylic beetles play a vital role in conservation as indicators of the status unmanaged forests. In light concern regarding adverse impact anthropogenic pressure on biodiversity, an essential step forest conserva-tion strategy is identification saproxylic beetles. The Hyrcanian forests are unique remnant natural broadleaf temperate forests, with evolutionary history that can be traced to Ter...

hyrcanian forests are the most valuable forests in the north of iran and industrial harvesting occurs only in this area. it is a productive region near the southern coast of caspian sea. in these forests mixed beech stands mostly shown uneven-aged structure that is managed under selection system. in order to determine the priority of uneven aged method not only from an ecological view, but also...

forest cover is one of the most effective factors in reducing flooding in northern iran, so that in recent years the destruction, land use changing and uncontrolled harvesting of forest areas, has greatly increased the number and magnitude of floods. so far, there have been few studies on forest hydrology in iran, particularly the northern hyrcanian forests. this study examines the impact of a ...

the oak genus (quercus l.) is one of the most important genera of beach family (fagaceae) that has ecological and economical importance. chestnutleaf oak (quercus castaneifolia c.a. mey.) is native to iran and distributed in hyrcanian forests. pure and mixed stands of this taxon have covered about 6.5 % of hyrcanian forests. this study was undertaken to evaluate the effects of ecological factor...

Background and objectives: Plants belonging to the genus Tilia L. (Tiliaceae) are often tall beautiful trees which are considered for various medicinal potentials of their flowers and leaves. The present study was an attempt to investigate the phytochemical constituents of Tilia rubra subsp. caucasica leaves from the hyrcanian forests of north of Iran. Methods: Chromatography on Silica gel (nor...