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5/21/2018 | 9:30 AM - 9:45 AM | DOES LIGHT TRAPPING FOR ADULT TRICHOPTERA IMPROVE BIOASSESSMENT OF STREAM HEALTH IN APPALACHIAN RIVER SYSTEMS? | 410 A

DOES LIGHT TRAPPING FOR ADULT TRICHOPTERA IMPROVE BIOASSESSMENT OF STREAM HEALTH IN APPALACHIAN RIVER SYSTEMS?

Biomonitoring with macroinvertebrates has become a cost-effective, rapid method for assessing both short- and long-term stream health. While the methods are fairly well-established and standardized, there is still room for improvement. For example, aerial adult males of most Trichoptera species can be readily identified, but benthic larvae of less than 50% of southeastern US Trichoptera species can be identified. Also, sampling benthic macroinvertebrates in large rivers is especially challenging. One method of collecting Trichoptera that has been suggested for biomonitoring and has been used in some situations (usually larger rivers) is light trapping. No studies, however, have incorporated both multi-habitat benthic sampling and light trapping as a combined protocol. Therefore, in this research, benthic sampling was conducted quarterly in January, March, July, and November 2017, and light trapping monthly from April through October in 2017. Comparisons among four sampling sites and between the two methods were examined using biotic indices and processing time differences.

Invertebrate
Community
Water Quality

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Presenters/Authors

Coleson Wrege (), University of Minnesota, cwrege@umn.edu;