The geographic distribution of Astragalus L. (Fabaceae) was analyzed using a database of 12377 geo-referenced observations. In the old world (including Asia, Africa and Europe) there are ca. 2900 euploid species classified in 166 distinct sections. In this study using geographic information system (GIS) by means of DIVA-GIS (ver. 4) distribution map of some more important sections in the old wo...

fauna of the aphidiinae (hymenoptera: braconidae) of iran is reviewed and the data on their host aphid associations are summarized. seventy-eight species belonging to 17 genera of aphidiinae are listed in the associations with 193 aphid species. a total of 491 parasitoid-aphid associations are presented. the distribution of the aphidiinae species in different parts of iran and other countries i...

the aim of this research was to investigate the effect of index species, astragalusammodendron on the associated plants of agropyron tauri and bromus tomentellus fromdifferent aspects in shazand rangeland in southwest of markazi province. the effects ofspecies density and distribution pattern and then index species on the soil properties werestudied. based on the randomized – systematic method,...

Stipa richteriana and Galium songaricum are newly recorded species for the flora of Iran, collected from Binalood and Hezar-Masjed Mountains in Razavi Khorassan Province. The geographical distribution of both species is mainly confined to the Middle Asia. Morphological characters of two newly recorded species are compared with their close relatives. Notes on taxonomy, ecology, phytogeography, a...

three species of tuberculina viz. t. persicina, t. sbrozzii and t. maxima are newly reported from iran. information about distribution and host range of species is provided. each species is re-described and illustrated by photomicrographs. a key for reported taxa is also provided.

Abstract Dichlorvos is an organophosphorus insecticide frequently detected in surface waters all around the world. From evaluation of environmental quality concentrations (EQC) for dichlorvos adopted by different countries, it was observed a wide variability among them. This despite regulatory EQC-values are typically based on toxicity data and species sensitivity distribution (SSD) investigate...

during ornithological expedition to four provinces in the northeast and north of iran in june 2009, a total of 117 bird species belonging to 14 orders and 40 families were recorded. based on these records, eight bird species were found outside their presumed breeding range according to the available distribution maps covering iran, suggesting that updating of the distribution maps should be pro...