“…These issues will require concerted action and high degrees of collaboration between the natural and social sciences. 44 Examples of value transfers (sometimes called benefit transfers although this is confusing as these techniques can also be applied to costs) and related meta-analyses for environmental goods include Barton, 2002;Bateman et al, 2009dBateman et al, , 2010bBateman and Jones, 2003;Bergland et al, 1995;Brouwer, 2000;Brouwer and Spaninks, 1999;Carson et al, 1996;Desvousges et al, 1992;Downing and Ozuna, 1996;Johnstone and Duke, 2009;Johnston et al, 2005Johnston et al, , 2006Leon-Gonzalez and Scarpa, 2008;Lindhjem and Navrud, 2008;Moeltner et al, 2007;Muthke and Holm-Mueller, 2004;Navrud and Ready, 2007;Ready et al, 2004;TEEB, 2009;Zandersen et al, 2007. 45 Transfer databases such as The Environmental Valuation Reference Inventory (EVRI, available at www.evri.ca) have been developed to assist the search process for such applications.…”