guilan province is located in north of iran. it plays an important natural, economic and strategic role in iranian history due to its geographical location between the caspian sea and the alborz mountain. this particular characteristic of guilan has made it one of the most important political centers in its history and in the history of its struggles against the central government of iran. iran...

earthquake has always endangered cities. this article mainly focuses on the question “whether seismic damages could be diminished through the presentation a preventive operational pattern dealing with physical and nonphysical features of civil defense”. tehran, the most populous metropolis among iranian cities is to the south of alborz mountain range, located on potentially dangerous fault- lin...

earthquake has always endangered cities. this article mainly focuses on the question “whether seismic damages could be diminished through the presentation a preventive operational pattern dealing with physical and nonphysical features of civil defense”. tehran, the most populous metropolis among iranian cities is to the south of alborz mountain range, located on potentially dangerous fault- lin...

For the first time in more than 100 years, a new western Palaearctic species of Heloridae is described. Specimens of Helorus alborzicus Izadizadeh, van Achterberg & Talebi sp. nov. and Helorus ruficornis Förster were collected from the Alborz province of Iran. An illustrated identification key for Western Palaearctic Heloridae is provided.

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We describe a new species of mite from Iran--Reticulolaelaps hallidayi Joharchi, Nemati & Babaeian sp. nov. (Acari: Laelapidae). The new species was collected in a nest of Tapinoma sp. (Hymnoptera: Formicidae) in Taleghan city, Alborz Province and in soil in Khuzestan province in southwestern Iran. Reticulolaelapsfaini is reported for the first time from Iran. The genus Reticulolaelaps is redes...

Well-preserved miospore assemblages are recorded from the Late Ordovician (Katian-Hirnantian), Ghelli Formation in Pelmis-gorge at the north-eastern Alborz Mountain The palynomorphs were extracted from siliciclastic deposits which are well-dated by using of marine palynomorphs (acritarchs and chitinozoans). The encountered miospore assemblages consist of 14 genera (28 species: 26 cryptospores a...

Preference value means livestock preference to eat some plants relative to other plants or species. Accordingly, by studying the preference values, the range managers could determine the rangelands grazing capacity to achieve the optimum performance of livestock and to guarantee the stability of rangeland ecosystem. The objective of this study was to determine the preference value of perennial ...