نتایج جستجو برای: species distribution
تعداد نتایج: 1109944 فیلتر نتایج به سال:
based on the latest records of typhlops vermicularis merrem, 1820 from iran, this species is distributed in the northern and southern regions of the country. in this study, new records of typhlops vermicularis are presented and it is shown that distribution range of this species is extended towards the eastern and western iran, and according to the new distribution map, it can be assumed that t...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...
پراکنش جغرافیایی جنس کوزینیا در ایران با استفاده از 3095 گزارش ثبت شده در منابع و یا بر اساس نمونه های هرباریومی واکاوی گردید. 241 گونه این جنس در تمام کشور گسترده اند، هرچند که حدود یک سوم از گزارش ها از استان های خراسان رضوی، تهران و فارس می باشد. این جنس 135 گونه نادر و 197 گونه انحصاری دارد. بیشترین مقدار برای شاخص حداکثر فاصله میان دو فرد از یک گونه (maxd) 1863 کیلومتر می باشد. استان های خ...
a total of 162 species (s) of rotifera belonging to 40 genera and 20 families examined from loktak lake, an important floodplain lake of northeast india (nei), is one of the richest assemblages of the taxon known from the indian sub-region. it merits biodiversity value as ~40.0% and ~62.0% of species recorded from india and nei, respectively. one species is new to india, 23 species are new to m...
background: the species of ectoparasites that live on a specific host in a geographical region form an ectoparasite community. species abundance distributions describe the number of individuals observed for each different species that is encountered within a community. based on properties of the species abundance distribution, the expected total number of species present in the community can be...
this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...
The present study aims to predict the potential geographic distribution and future expansion of invasive alien lionfish (Pterois miles) with ecological niche modelling along the Mediterranean Sea. The primary data consisted of occurrence points of P. miles in the Mediterranean and marine climatic data layers were collected from global databases. All the used models run 100% su...
جنس بید با تأسیس بیدستان در محیط یکنواخت که از قسمت های مختلف ایران جمع آوری شده بودند به طور تجربی و تاکزونومیکی کاملاً مرور شده اند. در این مطالعه تعداد کلی گونه های بید از 12 عدد به 31 گونه منفک و 7 دورگ افزایش یافته است. در این تحقیق s. issatissensis از s. excelsa var. rodonii به عنوان گونه مستقل ابقاء شده است و گونه های s. dinsmorei ،s. daviesii، s. persica و s. australior از حالت متراد...
a total of 3528 specimens of freshwater turtles belonging to two families viz., geoemydidae (brown river turtle, kachuga smithi; indian saw-backed turtle, k. tecta; brahminy rrive turtle, hardella thurgi; spotted pond turtle, geoclemys hamiltonii) and trionychidae (indian soft-shell turtle, aspederates gangeticus; peacock soft-shell turtle, a.hurum; narrow-headed soft-shell turtle, chitra indic...
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