Orenstein, D.E., Faculty of Architecture and Town Planning, Technion, Haifa, Israel
Groner, E., Dead Sea and Arava Science Center, Israel
Argaman, E., Ministry of Agriculture, Israel
Boeken, B., Ben-Gurion University of the Negev, Israel
Preisler, Y., Weizmann Institute of Science, Israel
Shachak, M., Ben-Gurion University of the Negev, Israel
Ungar, E.D., Volcani Center, Israel
Zaady, E., Gilat Research Center, Israel

Despite the burgeoning popularity of the term 'ecosystem services', relatively little work has yet been done to identify, characterize and quantify ecosystem services and their spatial distribution across the landscape. In this study, we test a methodology for taking inventory of ecosystem services in Israels semi-arid Northern Negev region. We survey site managers of five long-term ecological research (ITER) sites regarding the presence/absence of 86 ecosystem services, and their level of confidence regarding their answers. There was a high percentage of services in three categories (provisioning regulating and cultural) across all sites, and no significant differences based on environmental factors between sites. The only factor that correlated with differences in the package of services offered at each site was management agency (Ministry of Agriculture or Jewish National Fund-Keren Kayemeth Lelsrael). Through principle component analysis, we find that management agencies, through their land use policies, can alter the package of services, for example by emphasizing agricultural- or forestry-oriented services or particular cultural services, like those associated with education or tourism. We conclude our analysis with a discussion on both the distribution of services and our reflections on the learning process from our ecosystem service assessment.