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 | THE INFLUENCE OF LANDSCAPE AND LOCAL FACTORS ON ALLOCAPNIA RICKERI DISTRIBUTION IN ARKANSAS | Virtual Platform

THE INFLUENCE OF LANDSCAPE AND LOCAL FACTORS ON ALLOCAPNIA RICKERI DISTRIBUTION IN ARKANSAS

Stoneflies are one of the most threatened aquatic orders globally due to climate change, pollution, and habitat loss. In Arkansas, a group of winter stonefly (Capniidae: Allocapnia) includes multiple species that have not been surveyed since the 1980s because species-level identification requires the rarely-collected adult form. In the 1980s, A. rickeri was one of the most common regional species, and the Ozark-Ouachita region was probably the southwest limit of their range. Thus, climate change, stream habitat loss, and reduced water quality in the region may be causing a range shift. Our study aim was to determine whether current A. rickeri distribution and habitat associations have shifted since the 1980s. More than 40 streams were sampled across 4 Arkansas Ecoregions; each stream was sampled several times across the A. rickeri adult emergence period (November 2020 through March 2021). Watershed land use and hydrologic data were estimated at each sampling site along with collection of local stream habitat variables, and these explanatory variables were then used to fit a logistic regression model of A. rickeri distribution. The updated Ozark-Ouachita distribution map will allow us to determine if any range shifts have occurred.

Climate change
Biodiversity
Stream

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Presenters/Authors

Brianna Annaratone (), University of Arkansas, briannahillebrand@gmail.com;