نتایج جستجو برای: key range species

تعداد نتایج: 1649056  

Objective: Ecosystems with mixed species compared to the ones with pure compositions provide a broader range of options in the fields of biodiversity, conservation, protection and restoration. Nearly all forest plantations are established as monocultures, but research has shown that there are potential advantages to be gained by using carefully designed species mixtures in place of monocultures...

2015
James E. Byers Rachel S. Smith James M. Pringle Graeme F. Clark Paul E. Gribben Chad L. Hewitt Graeme J. Inglis Emma L. Johnston Gregory M. Ruiz John J. Stachowicz Melanie J. Bishop

Strategies for managing biological invasions are often based on the premise that characteristics of invading species and the invaded environment are key predictors of the invader's distribution. Yet, for either biological traits or environmental characteristics to explain distribution, adequate time must have elapsed for species to spread to all potential habitats. We compiled and analyzed a da...

ارزانی, حسین, برهانی, مسعود, بصیری, مهدی, زارع چاهوکی, محمدعلی, فرح‌پور, مهدی,

In order to investigate the effects of range management plans on species diversity, richness and evenness in Semirum rangelands, 52 sites (28 with treated plan and 24 without treated plan) were selected. The non-parametric indices for species richness (Margalof, Menhinick, Jacknife and counting method) and species diversity (Simpson, Camargo, Smith and Wilson and modified Nee) were compared in ...

2011
Shirin Rezaie Mohammad Esmaeildoust Marzieh Gerami Keivan Navi Omid Hashemipour

Modular multiplication is the most important part of public key cryptography algorithm like RSA and elliptic curve cryptography. Residue Number System is an efficient way to speed up these applications because of its carry free nature. Efficiency of modular multiplication in RNS is depending on effective selection of RNS bases. In this work efficient design of RNS bases are reported where compa...

Journal: :Zootaxa 2013
Stephen D Cairns Virginia Polonio

The twenty species of Scleractinia (all azooxanthellate) known to occur off Argentina and the Falkland Islands (the At lantic component of the cold temperate Magellan Province) are discussed, 15 of which are documented by new records Five new species are described: Caryophyllia kellerae, C. coronula, Solenosmilia australis, Flabellum cinctutum, and Ja vania cristata. Five geographic and nine ba...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان 1390

during 2010-2011 a faunistic survey was carried out for collection and identification of edaphic mesostigmatic mites (acari: mesostigmata) in jiroft and suburb. mites were extracted from soil samples by berlese funnel. the mites were cleared in nesbit fluid and were mounted in hoyer medium on microscopic slides. in this study 43 spices from 26 genera and 16 families were collected and identifie...

Journal: :Zootaxa 2015
Alihan Katlav Hamidreza Hajiqanbar Ali Asghar Talebi

The mite species Pseudopygmephorellus mazandaranicus Katlav and Hajiqanbar sp. nov. (Acari: Prostigmata: Pygmephoridae) is described and illustrated from northern Iran. This new species was discovered phoretic on three different scarabaeid dung beetles: Onthophagus sp., Aphodius depressus (Kugelann, 1792), Aphodius varians Duftschmid, 1805. This finding presents the first record of the genus Ps...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1390

سازند سروک در برش تنگ باولک، جنوب ایلام شامل 870 متر سنگ آهک، سنگ آهک رسی، سنگ آهک دولومیتی، سنگ آهک گلوکونیتی، سنگ آهک پیریتی و سنگ آهک چرتی است. با مطالعه 117 نمونه از نهشته های سازند سروک واقع در تاقدیس کبیرکوه، بیواستراتیگرافی بر اساس فرامینیفرا و چینه نگاری سکانسی این نهشته ها مورد بررسی قرار گرفت. مطالعات انجام شده بر روی فرامینیفرا در این برش منجر به شناسایی 35 گونه از 14 جنس متعلق به فر...

Journal: :Comput. Graph. Forum 2015
Okan Tarhan Tursun Ahmet Oguz Akyüz Aykut Erdem Erkut Erdem

Obtaining a high quality high dynamic range (HDR) image in the presence of camera and object movement has been a long-standing challenge. Many methods, known as HDR deghosting algorithms, have been developed over the past ten years to undertake this challenge. Each of these algorithms approaches the deghosting problem from a different perspective, providing solutions with different degrees of c...

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