Variations in fruits morphology of Tilia spp. were studied along longitudinal and altitudinal range. Ten populations of Tilia spp.from Golestan, Mazandaran and Gilan Provinces (N. Iran) were selected. After biometrical measurements and Scanning Electron Microscopic (SEM), Cluster Analysis divided the population into seven groups. Discriminat Analysis showed that among all traits studied, size o...

canopy gaps are one of the most important structural features of forest ecosystems, and studying of them can have useful results and implications for forest management. the aim of this study is investigation of characteristics and regeneration within canopy gaps in an intact beech stand in the shastkalateh experimental forest of hyrcanian region, north of iran. all canopy gaps and related fores...

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,...

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...

land-use change has strong effects on ecosystem properties, especially on soil carbon storage and it increased global atmospheric co2. degradation and loss of area and quality of hyrcanian forests are the biggest problems in these forests. one of the most important solutions to taking care of these problems is increasing plantations in these areas. therefore, investigation of the effects of dif...

Seasonal fluctuations play an important role in the pricing of a timber sale. A good understanding price mechanisms and predictability market would be very practical for forest owners, managers, investors, is crucial correct functioning sector. This research aimed to analyze effect sale season on (sawlog lumber) prices high-value species groups (e.g., oriental beech, chestnut-leaved oak, common...

Biological disturbances are integral to forest ecosystems and have pronounced effects on resistance, resilience, diversity. The Hyrcanian mixed forest, in northern Iran, is at risk of declining diversity due ongoing pressure from land use change, harvesting, biological disturbances. We analyzed the resistance resilience this area under two (i.e., oak charcoal fungus, Biscogniauxia mediterranea ...