نتایج جستجو برای: rainfall and temperature

تعداد نتایج: 16903927  

2015
Meit Öberg Debora Arlt Tomas Pärt Ane T Laugen Sönke Eggers Matthew Low

Adverse weather conditions during parental care may have direct consequences for offspring production, but longer-term effects on juvenile and parental survival are less well known. We used long-term data on reproductive output, recruitment, and parental survival in northern wheatears (Oenanthe oenanthe) to investigate the effects of rainfall during parental care on fledging success, recruitmen...

2013
Amit K Chattopadhyay Subhasish Bandyopadhyay

We present a data based statistical study on the effects of seasonal variations in the growth rates of the gastro-intestinal (GI) parasitic infection in livestock. The alluded growth rate is estimated through the variation in the number of eggs per gram (EPG) of faeces in animals. In accordance with earlier studies, our analysis too shows that rainfall is the dominant variable in determining EP...

Journal: :Comparative biochemistry and physiology. Part A, Molecular & integrative physiology 2004
Glenn R Wilson Sheldon J Cooper James A Gessaman

The effect of rainfall on the metabolism of birds is poorly understood. We measured the metabolism as rate of oxygen consumption (VO2) of four male and four female American kestrels (Falco sparverius) using open-circuit respirometry. We measured VO2 during the spring at ambient temperatures (Ta) of 5, 10, 15, and 25 degrees C in air without rainfall and with simulated rainfall of 2.5 (low rainf...

2015
Laifang Li Wenhong Li Qiuhong Tang Pengfei Zhang Yimin Liu

Furthermore, the interannual variation of summer precipitation is attributable to the variation of heavy rainfall frequency over the HRV. The heavy rainfall frequency, in turn, is influenced by sea surface temperature anomalies (SSTAs) over the north Indian Ocean, equatorial western Pacific, and the tropical Atlantic. The tropical SSTAs modulate the HRV heavy rainfall events by influencing atmo...

Journal: :پژوهش های جغرافیای طبیعی 0
طیبه کیانی دانشجوی دکتری ژئومورفولوژی، دانشکدة علوم جغرافیایی و برنامه ریزی، دانشگاه اصفهان، ایران محمدحسین رامشت استاد ژئومورفولوژی، دانشکدة علوم جغرافیایی و برنامه ریزی، دانشگاه اصفهان، ایران امجد ملکی دانشیار ژئومورفولوژی، دانشکدة ادبیات و علوم انسانی، دانشگاه رازی، ایران فریده صفاکیش دانشجوی دکتری ژئومورفولوژی، دانشکدة علوم جغرافیایی، دانشگاه خوارزمی، ایران

introduction in spite of its short time period compared to the earth evolution history and formation, quaternary has had a significant effect on the final formation of the land form and vital resources. it is the final analysis of these levels and fully dependent sources to the earth genetic diseases and, above all, significant climate changes that have happened during this period; gavkhouni ba...

Journal: :iranian journal of public health 0
mb théodore munyuli dept. of biological and environment studies, national centre for research in natural sciences, crsn/lwiro, d.s.bukavu, south-kivu province, democratic republic of congo ; centre of research for health promotion (crps), department of nutrition and dietetics, bukavu institute of higher education in medical techniques (istm-bukavu), south-kivu province, democratic republic of congo ; dept. of academic affairs, research, technologies and innovation; université du cinquantenaire (unic/ lwiro), d.s.bukavu, south-kivu province, democratic republic of congo. j-m mbaka kavuvu centre of research for health promotion (crps), department of nutrition and dietetics, bukavu institute of higher education in medical techniques (istm-bukavu), south-kivu province, democratic republic of congo ; dept. of public health, bukavu institute of higher education in medical techniques (istm-bukavu), south-kivu province, democratic republic of congo. guy mulinganya faculty of medicine, catholic university of bukavu (ucb), private bag, south-kivu province, democratic republic of congo. g mulinganya bwinja faculty of medicine, catholic university of bukavu (ucb), private bag, south-kivu province, democratic republic of congo ; dept. of nursing sciences, bukavu institute of higher education in medical techniques (istm-bukavu), south-kivu province, democratic republic of congo.

cholera epidemics have a recorded history in eastern congo dating to 1971. a study was conducted to find out the linkage between climate variability/change and cholera outbreak and to assess the related economic cost in the management of cholera in congo.this study integrates historical data (20 years) on temperature and rainfall with the burden of disease from cholera in south-kivu province, e...

Dingrong Wu Enli Wang Huib Hengsdijk Qiang Yu,

Summer maize (Zea mays L.) is one of the dominant crops in the North China Plain (NCP). Its growth is greatly influenced by the spatial-temporal variation of climatic variables, especially solar radiation, temperature and rainfall. The WOFOST (version 7.1) model was applied to evaluate the impact of climatic variability on summer maize yields using historical meteorological data from 1961 to 20...

Journal: :مرتع و آبخیزداری 0
مریم خسروی کارشناسی¬ارشد آبخیزداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران علی سلاجقه دانشیار دانشکده منابع طبیعی، دانشگاه تهران، ایران محمد مهدوی استاد دانشکده علوم فنون دریایی، دانشگاه آزاد اسلامی، واحد تهران شمال‏، ایران محسن محسنی ساروی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران

it is necessary to use empirical models for estimating of instantaneous peak discharge because of deficit of gauging stations in the country. hence, at present study, two models including artificial neural networks and nonlinear multivariate regression were used to predict peak discharge in taleghan watershed. maximum daily mean discharge and corresponding daily rainfall, one day antecedent and...

Journal: :فیزیک زمین و فضا 0
امیر شبانیان چالش تری دانش اموخته کارشناسی ارشد، دانشگاه ازاد اسلامی واحد تهران شمال محمد علی نصر اصفهانی استادیار،گروه مهندسی آب دانشگاه شهرکرد فروزان ارکیان استادیار، دانشگاه ازاد اسلامی واحد تهران شمال

iran is a vast land of geographically specific features and the climate is quite different. each year a number of times, short intense rains caused flooding in various parts of the southern coast of the caspian sea and river flood malicious conduct is falling. the rainfall intensity is greater and more destructive floods caused heavy damage. severe flooding during the brutal summer precipitatio...

Journal: :desert 0
gh.r. zehtabian faculty of natural resources, university of tehran, karaj, iran a. salajegheh faculty of natural resources, university of tehran, karaj, iran a. malekian faculty of natural resources, university of tehran, karaj, iran n. boroomand faculty of soil science engineering, shahid bahonar university of kerman, kerman, iran. a. azareh faculty of natural resources, university of tehran, karaj, iran

climate change is found to be the most important global issue in the 21st century, so to monitor its trend is of great importance. atmospheric general circulation models because of their large scale computational grid are not able to predict climatic parameters on a point scale, so small scale methods should be adapted. among downscaling methods, statistical methods are used as they are easy to...

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