remote sensing tool for scientific research in the late 1970s. However, due to a variety of limitations (the weight and limited functionality of available sensors and cameras, the lack of GPS-guided autopilots and so on) these platforms had few practical applications (Przybilla and Wester-Ebbinghaus 1979; WesterEbbinghaus 1980; cited by Colomina and Molina 2014). For years, UAS technology was l...

Natural zeolite was used as a bed medium for plantation of lettuce seedlings and its effects on growth and chemical composition of red tilapia and lettuce were investigated in a pisciponic system. The place of study was the Aquatic Resources Technology Laboratory, Faculty of Agriculture, at the University Putra Malaysia, in 2002. The mean individual weight and biomass of fish in the treatment w...

Forum Videos Are Available at bit.ly/1ugX8yk California’s ongoing drought is extraordinary and one of the worst in state history. Recently, Stanford University scientists reported that the drought may be linked to global climate change. This special issue of ARE Update summarizes a one-day Forum on climate change and associated challenges facing California’s agriculture and natu­ ral resources,...

This article has no abstract. DOI: 10.18502/jfqhc.9.4.11372

Dr. Abbasali Sanadgol is an associate professor in rangelands and forests research institute, IRAN, He is retired now. He earned his undergraduate and master degrees in natural resources and range management in 1976 and 1992 respectively from natural resources faculty of Tehran University and worked as a natural resources and range management researcher for 29 years at education and research ag...