1. Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer 84990, Israel, Israel Water Authority, 14 Hamasger Street, Tel-Aviv, 61203, Israel, and Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, 50250, Israel