The development of integrated methods for assessing river conservation value

摘要: In recent years the conceptual barriers between river `management' and `conservation' have begun to erode. As environmental aspirations of water managers conservationists broaden, there is a need for integrated methods conservation assessment which can be value both groups. This paper considers requirements inherent in such methods, explores some problems their design, using illustration development SERCON (System Evaluating Rivers Conservation) UK. The design including selection attributes evaluation, must closely related objectives any activity. For example, selecting representative series rivers statutory protection may require more focused techniques than those needed setting management objectives. European Union, Habitats Directive provides good example former approach, specific types species listed evaluated Special Areas Conservation. contrast, forthcoming Water Framework will rely on comprehensive method ensure that `good ecological quality' reliably defined, monitored maintained. Attempts at developing address six main issues: (i) differences perception `value'; (ii) defining criteria (such as `naturalness'), many are an extent subjective; (iii) establishing weighting systems differentiate important from less features; (iv) ensuring rigorous consistent; (v) extensive datasets allow assessment; (vi) providing clear guidance interpreting outputs. illustrates these experience gained It concludes inevitable search pragmatism should not detract inclusive approach assessment.