ECONOMIC VALUES OF THREATENED MAMMALS IN BRITAIN - A CASE-STUDY OF THE OTTER LUTRA-LUTRA AND THE WATER VOLE ARVICOLA-TERRESTRIS

We investigated the relative economic values of the otter Lutra lutra and the water vole Arvicola terrestris, two species that occupy simila r habitats and face common threats of habitat change, habitat fragment ation and pollution. Willingness to pay for conservation was estimated using the contingent valuation method. Data were collected by a telep hone survey using a referendum based on willingness to pay a specified amount as a single addition to tax. The most influential variables in determining respondents' willingness to pay were their age, the speci fied tax amount, whether they were aware of the threats to that specif ic species, whether they were a member of a conservation organisation and whether they walked frequently in the countryside. Mean willingnes s to pay values obtained were pound 11.91 for the otter, pound 7.44 fo r the water vole, and pound 10.92 for both species together. Aggregate d over the survey population of North Yorkshire, these results equate to pound 6.4 million, pound 4.0 million and pound 5.8 million, respect ively. These figures are well in excess of the calculated present valu es for the UK action plans for the otter and the water vole (pound 0.8 million and pound 1.0 million, respectively). The results demonstrate strong public support for mammal conservation, in particular for high profile 'flagship' species, and suggest that public profile may be as important as rarity or the degree of threat in determining a species' relative economic value. (C) 1997 Published by Elsevier Science Ltd.