Decision tools for species conservation, such as benefit cost analysis (BCA) and project prioritization protocol (PPP) use monetary values to measure benefits or to assign priorities across species. Non-use (or passive) values are an important, yet difficult to quantify, category of benefits. When not estimated they may be assigned a zero value by decision makers. This results in the under-provision of conservation dollars to substantial non-use values generating projects and actions. To overcome the problem, we provide a guide to environmental value transfer (EVT) that allows decision makers to derive indirect estimates of non-use values. Environmental value transfer, together with consideration of estimated benefits uncertainty, promise better decision making and improved species conservation outcomes.


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