نتایج جستجو برای: species of flora and fauna
تعداد نتایج: 24085229 فیلتر نتایج به سال:
forest reserves are one of the most important approaches in ecosystem management in iran. in order to determine the effects of reserve management on plants diversity (woody plants and ground flora) in three zones (core zone, buffer zone, and transmission zone of chamhesar pear forest reserve), we mapped land form units. then 18 main sampling units (20×50=1000 m2) distributed randomly were chose...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
during a study on fauna of the frit flies (diptera: chloropidae) in khorasan razavi province (iran) in 2014 and 2015, nine species of six genera were collected and identified. platycephala rugosa (nartshuk, 1964) is recorded for the first time for iranian fauna. geographical distribution and biological notes are provided.
in the name of allah , the compassionate the merciful abstract shath ( blasphemic utterace made during spiritual ) is a complicated concept that deserves reflection in gnosticism and sufism ( mysticism ) and estem and westem scholars have alwaya paid attention to it. although principal essence of gnostic belief is the holy divine law ,gnosticism has pure and unique thoughts . by glancing at t...
the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...
Lord Howe Island is an eroded remnant of a shield volcano approximately 600 km northeast of Sydney, New South Wales, Australia. It has fascinated biologists for more than a century because of its unique and iconic fauna and flora, and was declared a World Heritage Site in 1982. Although the terrestrial invertebrate fauna is reasonably well known for many groups, most Hymenoptera, apart from ant...
Soil flora and fauna play an important role in nutrient cycle and ecosystem sustainability. With the aim of investigating the changes in the activity of these soil organisms as a result of the change of vegetation from forest to rangeland in the mountainous regions of the north of the country, the present study was considered. For this purpose, in the Kinj region of Nowshahr, a forest habitat d...
abstract the objective of this paper was to determine species diversity of wintering waterbirds from a ten-year (2002-2011) monitoring in meyghan wetland. data for calculating the estimates of biodiversity come from the midwinter census by using a total count from the department of the markazi province's environment. data analysis for determine species diversity carried out by using ecolog...
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
a major concern in the last few years has been the fact that the cultural centers are keeping distance with what they have been established for and instead of reproducing the hegemony, they have turned into a place for resistance and reproduction of resistance against hegemony. because the cultural centers, as urban public spaces in the last two decades, have been the subject of ideological dis...
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