Calibration and validation of a regionally and seasonally stratified macroinvertebrate index for West Virginia wadeable streams.

Environmental Monitoring and Assessment
Gregory J PondMichael J Whitman

Abstract

Multimetric indices (MMIs) are routinely used by federal, state, and tribal entities to assess the quality of aquatic resources. Because of their diversity, abundance, ubiquity, and sensitivity to environmental stress, benthic macroinvertebrates are well suited for MMIs. West Virginia has used a statewide family-level stream condition index (WVSCI) since 2002. We describe the development, validation, and application of a geographically- and seasonally partitioned genus-level index of most probable stream status (GLIMPSS) for West Virginia wadeable streams. Natural classification strata were evaluated with reference site communities using mean similarity analysis and non-metric multidimensional scaling ordination. Forty-one metrics spanning six ecological categories (richness, composition, tolerance, dominance, trophic groups, and habits) were evaluated for sensitivity, responsiveness, redundancy, range and variability across seasonal (spring and summer) and regional (mountains and plateau) strata. Through a step-wise metric selection process, 8-10 metrics were aggregated to comprise four stratum-specific GLIMPSS models (mountain/plateau and spring/summer). A comparison of GLIMPSS with WVSCI exhibited marked improvements where G...Continue Reading

References

Apr 25, 2000·The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation·M DesroisM Bernard
Aug 30, 2006·Ecological Applications : a Publication of the Ecological Society of America·John L StoddardRichard H Norris
Jun 3, 2009·Environmental Monitoring and Assessment·Simone G Varandas, Rui Manuel Vitor Cortes

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