Drought stress is a major environmental factor limiting plant growth. Selection of drought-tolerant plants critical importance in vegetation restoration and forestation programs. Alnus subcordata Acer velutinum are two valuable, dominant, endemic species the Hyrcanian forests. There fast-growing significant diffuse-porous hardwood afforestation reforestation. One-year old seedlings both were ex...

Nineteen species of mostly epiphytic lichens from the forests of Nowshahr and Royan located in Mazandaran province (N Iran) are reported. Three species, Ochrolechia pallescens, Phaeophyscia confusa and Usnea longissima, are newly reported for lichenized mycota of Iran and seven species are new to the province. Additionally, a short history of lichenological exploration in the Hyrcanian forest i...

the endocarp of celtis australis l. with hyrcanian forests of northern iran and arid mountains of northern africa ecotypes were studied considering macro and micro morphologic characteristics, using binocular and scanning electron microscope. the aim of this research was to evaluate the endocarp diversity in different ecological conditions. the results showed that celtis australis l. is bigger,...

we studied 11 gaps covered with beech saplings (< 1.30 m tall) in a reserve compartment (compartment 139, district one, langa forest, watershed 36: kazemrood) of the caspian beech forest in n iran. two transects, each 2 m wide, were laid along the longest (n-s) and shortest (e-w) axis of each gap. five micro sample plots, each 4 m2, were established: one at the center, and one at each corner. q...