نتایج جستجو برای: altitude suitability and plant coverage

تعداد نتایج: 16891856  

Journal: :محیط شناسی 0
میر امید هادیانی مربی گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی، واحد قائم شهر وحید غلامی دانشجوی دکتری آبخیزداری از دانشگاه آزاد اسلامی تهران, واحد علوم و تحقیقات زهرا نژادآذر عضو باشگاه پژوهشگران جوان دانشگاه آزاد اسلامی واحد قائم شهر

there are different methods for controling the flood damages which one of them is flood zoning. in this method, flood zones are determined by simulating river hydraulic behavior and its flood plain for different return periods.in other hand, soil and specially plant coverage are the most effective factor to determine manning roughness coefficient. so it is expected, seasonal plant coverage chan...

2001
Simon Lucey Sridha Sridharan Vinod Chandran

In recent history the use of chromatic segmentation has come very much into vogue for mouth tracking. Our recent work has endeavored to show under what conditions and representations chromatic segmentation works. Results are presented showing for some members of the population chromatic segmentation does not work satisfactorily irrespective of recording conditions. A suitability metric is propo...

Identifying environmental factors affecting the habitat preference of medicinal species is a fundamental and valuable action for cultivation and domestication and reducing the pressure on natural resources is a fundamental and valuable action. This study was performed with the purpose of investigate the most important ecological factors affecting the habitat of Stachys lavandulifolia Vahl in ea...

2016
M. J. Savage

Site-specific and accurate prediction of daily minimum air and grass temperatures, made available online several hours before their occurrence, would be of significant benefit to several economic sectors and for planning human activities. Site-specific and reasonably accurate nowcasts of daily minimum temperature several hours before its occurrence, using measured sub-hourly temperatures hours ...

2017
Ji‐Zhong Wan Chun‐Jing Wang Jing‐Fang Tan Fei‐Hai Yu

Testing climatic niche divergence and modeling habitat suitability under conditions of climate change are important for developing strategies to limit the introduction and expansion of alien invasive weeds (AIWs) and providing important ecological and evolutionary insights. We assessed climatic niches in both native and invasive ranges as well as habitat suitability under climate change for eig...

2018
Arti Mishra Gopaljee Jha Indu Shekhar Thakur

Zhihengliuella sp. strain ISTPL4, a psychrotolerant bacterium, was isolated from brackish water of the high-altitude Pangong Lake in India. In this study, we report its draft genome sequence, which contains 3,529,629 bp with a G+C content of 69.84%. The genome is enriched in genes associated with cold adaptation and plant growth promotion.

2012
Thomas Hahn Chris J. Kettle Jaboury Ghazoul Esther R. Frei Philippe Matter Andrea R. Pluess

BACKGROUND Environmental gradients caused by altitudinal gradients may affect genetic variation within and among plant populations and inbreeding within populations. Populations in the upper range periphery of a species may be important source populations for range shifts to higher altitude in response to climate change. In this study we investigate patterns of population genetic variation at u...

A. K. Zamanimoghaddam M. Hassanzadeh, S. Bahadoran

To investigate the influence of hypoxia during the early stage of incubation on embryonic developmentand hatching events, and consequently on incidence of ascites in broiler chickens, one thousand fertile eggswere incubated in two commercial incubators. Half the eggs were incubated in a low altitude incubator untilhatched. The second half were incubated in a high altitude incubator until day 10...

2017
Luis M. Carrascal Ángel C. Moreno Alejandro Delgado Víctor Suárez Domingo Trujillo

BACKGROUND Understanding constraints to the distribution of threatened species may help to ascertain whether there are other suitable sectors for reducing the risks associated with species that are recorded in only one protected locality, and to inform about the suitability of other areas for reintroduction or translocation programs. METHODS We studied the Gran Canaria blue chaffinch (Fringil...

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