4 results for “Ernest Robinson”

Research ArticleOpen accessIn the author namesSoil Quality of Die off and Die Back Mangrove Grown at Al-Jubail Area (Saudi Arabia) of the Arabian GulfAkram Ali, Ahmed Alfarhan, Ernest Robinson, Wafa AltesanThe declining mangrove vegetation along the Arabian Gulf coast necessitates a thorough study for finding out the soil status and for rehabilitating the affected population. In this study, soil supporting die back/die off mangrove plants at Al-Jubail area was studied. Field experiments were also conducted to determine the success/failure ratio of the germinated seeds in both healthy and damaged soils. … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,622 accessesView PDF Cite

Research ArticleOpen accessIn the author namesTropospheric Ozone Effects on the Productivity of Some Crops in Central Saudi ArabiaAkram Ali, Ahmad Alfarhan, Ernest Robinson et al.This study was conducted to evaluate damaging degree of ambient ozone (O3) levels in certain economically important crops in typical areas of the central KSA (Riyadh). Daily mean ozone concentrations were recorded by portable O3 analyzers in the center of Batha, Naseem, Oleya and Industrial City, from the beginning of October, 2006 to middle of June, 2007. Maseef area was … …American Journal of Environmental Sciences, Vol. 4, Issue 6 · 31 Dec 2008 · 7,252 accessesView PDF Cite

Research ArticleOpen accessIn the author namesPattern of Survival and Mortality of Mangrove Populations Grown at Al-Jubail Area (Saudi Arabia) of the Arabian GulfAkram Ali, Ahmed Alfarhan, Ernest Robinson, Ibrahim AldjainThe life table and fecundity schedule were produced for [Avicennia marina (Forsk.) Vierh] populations of four habitat types at Al-Jubail area, KSA. These types are sand mounds, salt flats, shoreline and intertidal sites. Survivorship (lx) was least in sand mounds and similar in all other sites. Age-specific-mortality rates (qx) where parallel in the flower bud, flower, fruiting and seedling stages … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 3 · 30 Sep 2008 · 7,868 accessesView PDF Cite