AIM To determine the effects of annual rainfall and farm on the efficacy of melatonin implants in improving lamb production in Merino sheep in Spain. METHODS A study was conducted on 3,871 Merino sheep on six farms over a 4-year period (2004-2007). Melatonin implants were inserted during the second half of February or early March (winter) (Melatonin group) or not (Control group). Multinomial ...

The aim of this study was to investigate the climate change impacts on some factors affecting rainfed wheat growth such as effective rainfall, planting date and length of growing season in four stations located in Chaharmahal and Bakhtiari province. Firstly, it is necessary to predict future (2046-2065) climatic conditions. For this purpose, the output of HADCM3 general circulation model was us...

Introduction: Rangeland ecosystems provide multiple ecosystem services, including feed resources for wild and domestic herbivores in semi-arid areas. However, under the ever increasing environmental changes, the impact of rainfall variability on the productivity and vegetation dynamics of rangelands are the great challenges that pastoral community are facing today. As a result, the potentials o...

Citation: Luhunga PM and Djolov G (2017) Evaluation of the Use of Moist Potential Vorticity and Moist Potential Vorticity Vector in Describing Annual Cycles of Rainfall over Different Regions in Tanzania. Front. Earth Sci. 5:7. doi: 10.3389/feart.2017.00007 Evaluation of the Use of Moist Potential Vorticity and Moist Potential Vorticity Vector in Describing Annual Cycles of Rainfall over Differ...

A model was developed for estimating average annual soil loss by water on hillslope for cropland, which is called Chines Soil Loss Equation (CSLE). Six factors causing soil loss were evaluated based on soil loss data collected from experiment stations covering most regions of China and modified to the scale of Chinese unit plot defined. The model uses an empirical multiplicative equation, A=RKL...

the dominant agricultural land uses are included of wheat farming in the kermanshah providence in the northwest of iran. the objective of this paper is analyzing of topoclimatic zonning of the wheat dry farming areas based on overlying the climatic and topographic character tics. to achieve the exact date of stages of rain-fed wheat growing in different areas of the province, the degree-days te...

Nicholls and Larsen (2011) demonstrated that daily maximum temperatures at Melbourne, Australia, tended to be higher during and following droughts than otherwise. Studies in Europe and elsewhere also have demonstrated that low soil moisture associated with a drought is a likely contributor to high temperatures (eg. Durre et al. 2000; Seneviratne at al. 2006, 2010; Fischer et al. 2007a, b; Dole ...

Variability of the Indian summer monsoon is decomposed into an interannually modulated annual cycle (MAC) and a northward-propagating, intraseasonal (30–60-day) oscillation (ISO). To achieve this decomposition, we apply multi-channel singular spectrum analysis (M-SSA) simultaneously to unfiltered daily fields of observed outgoing long-wave radiation (OLR) and to reanalyzed 925-hPa winds over th...