2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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5/27/2021 | 2:00 PM - 3:30 PM | Adult insects and a baby record: a new long-term study of aquatic insect emergence from the streams of Hubbard Brook Experimental Forest | Virtual Platform

Adult insects and a baby record: a new long-term study of aquatic insect emergence from the streams of Hubbard Brook Experimental Forest

In spring of 2018, we initiated the weekly sampling of emergent insects from seven well-studied headwater streams in the Hubbard Brook Experimental Forest. Each week, 35 sticky traps hanging from permanent locations in the riparian zone within 20m of the location of water sampling are collected. Counts of the aquatic insects of the orders Ephemeroptera, Diptera, Plecoptera, and Trichoptera reveal two distinct seasonal peaks in emergence: the first occurs in May and the second in early October. Both peaks are dominated by blackflies which made up 77% of the 100,749 insects counted to date, while mayflies account for less than 0.07%. The number of emergent insects differed between the first two years of our study, with 64% more emergence in 2019 than in 2018. We are just beginning to be able to build predictive models to explain spatial and temporal variation in the timing and magnitude of insect emergence and look forward to the insights that will be gained as this record continues to the end of the decade.

Stream
Biogeochemistry
Biodiversity

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Presenters/Authors

Tyler Edwards (), Duke University, tge4@duke.edu;