We draw on a number of empirical studies undertaken in the UK to show how r
esidents and farmers come to contest scientific approaches to valuing natur
e as the basis for adjudicating conflicts over protected natural areas. The
findings of these studies suggest that a widening of the knowledge base on
which the goals and practices of nature conservation are founded, and a mo
re deliberative process of decision making about what nature is important l
ocally, is required if effective conservation partnerships are to be sustai
ned. We offer a common good approach to valuing nature as a means of addres
sing this problem. A common good approach is based on ethical and moral con
cerns about nature and expresses these values through a social and politica
l process of consensus building. We illustrate how this common good approac
h can be used to prioritise issues in a Local Environment Agency Plan. When
linked with a method of Stakeholder Decision Analysis this common good app
roach is capable of building coalitions and a measure of consensus between
different interests. It achieves this through a transparent and deliberate
process of debate and systematic analysis of values that makes explicit the
foundation of different knowledge claims about nature.