نتایج جستجو برای: species distribution
تعداد نتایج: 1109944 فیلتر نتایج به سال:
Plant species diversity in Jokhaneh plain and the southern slope of Nil Mt. is investigated in order to determine the flora and life forms and chorotypes of plants in this area. The studied area is located in Kohgilouyeh va Boyerahmad province, covers 22’475 hectares and its average elevation is 2’315 m above sea level. In spite of a few studies in this region, broad knowledge of the flora of t...
Cousinia elymaitica, which has been collected from western Iran, is described in this paper as a new species. This new species has been assigned to the sect. Pugioniferae on the basis of its habit, purple corolla and decurrent leaves. Its closest related species is C. macroptera. A distribution map and an illustration of the related specimens have also been provided.
Climate change may pose challenges to the conservation of plant species such as the Fritillaria imperialis that have narrow geographical distribution. In this study, the modeling suitable habitats of F.imperialis in Iran was done in the current condition and under climate change (2050). For this purpose, 78 species presence data along with 12 environmental variables including bioclimatic, physi...
Numerical and parametrical indices are two of the most important and most widely used indices for assessing biodiversity in different societies. Nevertheless, their efficiency and selection in various ecosystems has always been one of the challenging issues of ecology. In this study, the numerical indices of diversity, richness and eveness, as well as abundance–ranking distribution models inclu...
Five genera and ten species of the tribe Aeliini Still from the Indo-Pakistan region are keyed, compared to their closest allies and their geographical distribution given. A description of all the above genera and species of Adria St?l and Bonacialus Distant has been given. These species, including two new species of Adria, are described with special reference to their metathoracic scent ...
Geobotanical assessment of taxa with a high percentage of richness and endemism plays an important role on conservation plans. South-West Asia is one of the main biodiversity centers of the genus Onosma (Boraginaceae) comprising a high rate of species richness and endemism in Iran. Due to existing threatened factors to habitats and lack of sufficient data on conservation and distribution patter...
the present checklist is a compilation of the eupodoid mites of iran using published records and original data from recent researches. it contains 19 species belonging to 13 genera and five families. family cocceupodidae jesionowska, 2010 (because of moving the genera to a new family) and two species i.e. foveacheles (foveacheles) cegetensis zacharda, 1983 and linopodes antennaepes banks, 1894 ...
Introduction: The natural ecosystems of Iran are the most important origins of speciation in the world and protecting this diversity is of great importance. Sumac species in Bideskan habitat is considered as one of the most important rangeland sub-products that in addition to regional economic prosperity, it provides sustainable employment for villagers and is considered as an important species...
Predicting species’ distribution is a prerequsit for assessing threats, determining conservation status, and planning conservation programs. Asian houbara Chlamydotis macqueenii is one of the most valuable game species threatened by extinction. We estimated the distribution of potential suitable habitats of wintering populations of Asian houbara bustard in central Iranian plateau using maximum ...
Although macrobenthic assemblages are considered as major players in many ecosystems around the world, the ecology of Caspian Sea macrobenthos is currently understudied. This study describes the species composition and quantitative distribution of macrobenthos in the southern Caspian Sea and relates the distribution to seasonal changes at three depths (1, 5 and 10 meters) on the Boojagh Marine ...
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