نتایج جستجو برای: rare species

تعداد نتایج: 777083  

Journal: Journal of Herbal Drugs 2011
Asghar Shahrokhi, Hamzeh Ali Shirmardi, Hossain Mohammadi Najaf-abadi Mahmood Talebi

Background & Aim: The present study was to identify the medicinal plant species and introduced as one of the key priority areas for conservation and determination of endangered species were done. Experimental: The method of plant collection in this region was classical method of regional plant taxonomic studies. Collected plants were recognized and determined families, genera and species of th...

Journal: :دانش گیاه پزشکی ایران 0
حامد غباری دانشجوی سابق دکتری حشره شناسی پردیس کشاورزی و منابع طبیعی دانشگاه تهران و استادیار دانشگاه شهر جاماسب نوذری استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین الهیاری دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مارک کالاشیان استاد انستیتوی جانورشناسی ارمنستان

buprestid beetles are one of the important components of the biodiversity of forest ecosystem in kurdistan province. different characteristics of biodiversity of buprestid beetles were studied by use of window trap, colored pan and colored sticky trap in these forests during 2009 and 2010. a total of 1205 specimens of 44 species were caught by use of considered traps during appearance of adults...

Journal: :مجله بین المللی زیست و زیست پزشکی 0
emmanuel okrikata depafederal university wukari, taraba state, nigeria olajumoke anuoluwa yusuf depafederal university wukari, taraba state, nigeria

a field survey was conducted in wukari, taraba state to assess the diversity and abundance of insect species in selected habitats (residential, open field made up of grassland and an agroecosystem). sampling were done biweekly using light, pitfall and yellow pan traps set in 3 replicates, 30 m apart. insects recovered were wet preserved in 70% ethanol except butterflies and moths. representativ...

S.S suleymanov, A.P Azizov , H Ghassemi ,

The analysis of net catches made in Absheron Gulfs of the Caspian Sea during 2011-2012 is provided. The ichthyofauna of Absheron Gulfs, including 26 species found in the North Gulf, and 33 species and subspecies found in the South Gulf was studied for the first time. A taxonomical and ecological diversity of the fish fauna of North and South Absheron Gulfs is characterized. The peculiarities of...

Journal: :Ecology 2016
John L Maron Alyssa Laney Smith Yvette K Ortega Dean E Pearson Ragan M Callaway

Plant-soil feedbacks and interspecific competition are ubiquitous interactions that strongly influence the performance of plants. Yet few studies have examined whether the strength of these interactions corresponds with the abundance of plant species in the field, or whether feedbacks and competition interact in ways that either ameliorate or exacerbate their effects in isolation. We sampled so...

Journal: :Proceedings. Biological sciences 2016
Rafael P Leitão Jansen Zuanon Sébastien Villéger Stephen E Williams Christopher Baraloto Claire Fortunel Fernando P Mendonça David Mouillot

There is broad consensus that the diversity of functional traits within species assemblages drives several ecological processes. It is also widely recognized that rare species are the first to become extinct following human-induced disturbances. Surprisingly, however, the functional importance of rare species is still poorly understood, particularly in tropical species-rich assemblages where th...

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