نتایج جستجو برای: diversity in ecological function

تعداد نتایج: 17151364  

2016
Dawei Gong Xiaojie Gong Lili Wang Xinjuan Yu Quanjiang Dong

A considerable number of studies have been conducted to study the microbial profiles in inflammatory conditions. A common phenomenon in inflammatory bowel disease (IBD) is the reduction of the diversity of microbiota, which demonstrates that microbial diversity negatively correlates with disease severity in IBD. Increased microbial diversity is known to occur in disease remission. Species diver...

Journal: :international journal of advanced biological and biomedical research 2013
abas jamshidi bakhtar khosro sagheb-talebi mohamad reza marvi mohajer maziar haidari

fire, as a natural ecological disturbance factor in forest, this study located in the marivan region, northern zagros forest, and western iranian state of kurdistan. in each burned and unburned area 30 circle sample plot (1000 m2) were collected by randomized–systematic method in the 100×200 m net (in total 60 plots). in every sample plot the kind of species, number of tree, the height of coppi...

Journal: :Scientific reports 2016
Jaejoon Jung Laurent Philippot Woojun Park

The relationship between microbial biodiversity and soil function is an important issue in ecology, yet most studies have been performed in pristine ecosystems. Here, we assess the role of microbial diversity in ecological function and remediation strategies in diesel-contaminated soils. Soil microbial diversity was manipulated using a removal by dilution approach and microbial functions were d...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1375

chapter two presents three m-admissible function algebras ab, bd, and sl, to construct the universal abelian, band, and semilattice compactifications, respectively. the main results are (11.3), (12.3), and (12.4). some inclusion relationships between these function algebras and the other well-known ones, presented in section 8, are made via the devico of compactifications. chpter three is about...

Ecological Psychology and Micro-Sociology studies concerning behavioral-milieu systems have created an important basis for evaluation and prediction of the performance of built environments. In this context, the Behavior Setting Theory introduced by Roger Barker in 1968 defines the complicated behavioral-milieu framework or synomorphy as the determining factor of the environmental behaviors of ...

Journal: :محیط زیست طبیعی 0
شهریار سعیدی مهرورز دانشیارگروه زیست شناسی، دانشکدۀ علوم، دانشگاه گیلان، رشت علیرضا نقی نژاد دانشیارگروه زیست شناسی، دانشکدۀ علوم پایه، دانشگاه مازندران، بابلسر زینب کاظمی گرجی دانشجوی کارشناسی ارشدگروه زیست شناسی، دانشکدۀ علوم، دانشگاه گیلان، رشت

miankaleh biosphere reserve it has a set of marine and land ecosystems an area about 67349 ha and is located in the north of iran and southeast farthermost of caspian sea. the diversity of the natural characteristics of caspian region is the cause of diversity in the habitats, and has resulted in nesting of most plant species in the germinative range. regarding the importance of coastal ecosyst...

The present study was performed to identify diversity indices of herb layer functional groups and its relation to physiographical factors in central Zagros forest, Lorestan. For this purpose, sampling of herbaceous plants was conducted randomly in plots of 2×2 m (n=50) in site. All plants were classified to functional groups including forbs, graminoids and legumes, also Raunkiaerchr('39')s life...

Ali Mahamane Ambouta J.M. Karimou Boubacar M. Moussa Mahamane Saadou SOUMANA Idrissa, Youssoufa Issiaka

Description of vegetation patterns associated with environmental factors such as grazing, climate, landforms, substrate variables etc. are helpful for land management planning. This study used new synecological tools to investigate plants composition and to provide ecological descriptions of plants communities of communal pastures in Sahelian Ecological Zone of Niger. Vegetation and several env...

Ecological condition including physiographic factors have impact bon plant species diversity. There for it is necessary to investigate at the ecological condition in other to achieve sustainable development and natural ecosystem conservation. The present study aim is investigate the effect of physiographic factors (altitude and geographic directions) on the biological diversity of plant species...

The aim of the study was to investigate affecting environmental factors on functional diversity indices and species diversity for the fluctuation of the management according to the ecological conditions in Raver rangeland. To determine the functional attributes of rangeland plants, 12 height points were selected along elevation gradient those were distance between them100 meters. 5 sampling plo...

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