Synoptic assessment of wetland function: a planning tool for protection of wetland species biodiversity
Source: Biodiversity and Conservation, Volume 11, Number 3, March 2002 , pp. 379-406(28)
Abstract:We present a synoptic assessment intended to maximize the benefits to wetland species biodiversity gained through Clean Water Act regulatory efforts within 225 sub-basins in Missouri, Iowa, Nebraska and Kansas (US Environmental Protection Agency, Region 7), USA. Our assessment provides a method for prioritizing sub-basins potentially critical for supporting wetland species biodiversity and may assist environmental managers and conservationists constrained by limited resources. We prioritize sub-basins based on the projected increase in the risk of wetland species extirpation across Region 7 that would be avoided by applying a unit of regulatory protection effort within a sub-basin. Because the projected increase in risk avoided per unit effort has not been directly measured, we represent this quantity with an index of indicators drawn from readily available data. A conceptual model incorporating landscape and anthropogenic factors guides index development via a series of simple benefit-cost equations. We rank and map the final index scores to show the relative priority among sub-basins for protection effort. High priority sub-basins appear to be concentrated along the major river systems within the region, where sensitive wetland species and intensive agriculture tend to coincide. Protection of wetland species biodiversity is an important, but not exclusive, attribute around which priorities should be set. Nevertheless, incorporation of our results into management strategies should allow managers to cast their local decisions in the context of regional scale maintenance of wetland species biodiversity, increasing ecological benefits for a given protection effort.
Document Type: Regular Paper
Affiliations: 1: US EPA Region 7, 901 N. Fifth Street, Kansas City, KS 66101, USA; e-mail: email@example.com; fax: +1-303-312-6071; Present address: US EPA NHEERL, Mid-Continent Ecology Division, 999 18th Street, Suite 500, Denver, CO 80202, USA 2: US EPA NHEERL, Western Ecology Division, 200 SW 35th Street, Corvallis, OR 97333, USA 3: Dynamac Corporation Environmental Services, US EPA NHEERL, 200 SW 35th Street, Corvallis, OR 97333, USA 4: US EPA Region 7, 901 N. Fifth Street, Kansas City, KS 66101, USA
Publication date: March 1, 2002