This paper reports on two species of mites of the genus Cosmolaelaps Berlese, 1903 in Iran--C. dorfakiensis sp. nov., and C. pinnatus sp. nov., extracted from soil and leaf litter samples in Guilan Province, Northern Iran. A key to the species of Cosmolaelaps occurring in the Iran is also provided.

In this paper, a new species of the genus Nenteria Oudemans, 1915 is described on the basis of adult female and male specimens collected in soil and litter in parks in Kerman, southeastern Iran, and Tehran, northern Iran. A key to the Iranian species of Nenteria is also presented, and Trachycilliba abantica (Bal & Őzkan, 2007) is reported for the first time in Iran.

Ata-Kuh forest, a preserved area within Hyrcanian relict forests, with an area of 700 ha is located in north of Iran. Based on floristic studies from 2011 through 2012, 194 vascular plant species were identified belonging to 143 genera and 66 families. Among our samples, 24 taxa were endemic to Hyrcanian area. The largest families in the area were Rosaceae (10.3 %), Poaceae (9.7 %), Asteraceae ...

Temperate and boreal forests of the Northern Hemisphere have recently been identified as important carbon sinks. Accurate calculation of forest carbon budget and appraisal of the temporal variations of forest net carbon fluxes are important topics to elucidate the ‘‘missing sink’’ question and to follow up the changing carbon dynamics in forests. In this article, recent carbon budgets of the fo...

The operating hourly cost of the machine is a suitable factor to analyze the cost fluctuation certain machinery in a changing environment and to find of economically feasible work concepts for the studied machine system. This paper, which is based on studies carried out in northern forests of IR-Iran, analyzed and compared costs of four skidding and excavation machines used in timber harvesting...

dr. mohammad hossein jazirei was born in 1922 in bandar-e-anzali and finished high school there.in may 1944, he graduated in agriculture engineering and occupied the position of lahijan forester in forestry department of ministry of agriculture in fall. in 1955, he moved to belgium and was admitted by agronomy institute of belgium; he achieved ms in water and forest field in 1957. after doing r...

ata-kuh forest, a preserved area within hyrcanian relict forests, with an area of 700 ha is located in north of iran. based on floristic studies from 2011 through 2012, 194 vascular plant species were identified belonging to 143 genera and 66 families. among our samples, 24 taxa were endemic to hyrcanian area. the largest families in the area were rosaceae (10.3 %), poaceae (9.7 %), asteraceae ...

The Hyrcanian forests of Iran contain many species-rich communities that can only be maintained through an understanding the renewal and development these forests. Located in Jojadeh section Farim forest northern Iran, individual tree growth five distinct species [(Oriental beech (Fagus orientalis Lipsky), chestnut-leaved oak (Quercus castaneifolia Coss. ex J.Gay), Persian maple (Acer velutinum...

BACKGROUND The fertility experience in Iran suggests that the family planning programs had an effective role in the fertility reduction. This study aimed to specify patterns of marriage in Iran and especially in a northern city of Iran and to investigate the association between patterns of marriage and contraceptive use before first pregnancy and current contraceptive use. METHODS In this cro...