EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/23/2019 | 2:30 PM - 2:45 PM | BARTRAM’S BASS THREAT ASSESSMENT AND CONSERVATION PLANNING IN THE UPPER SAVANNAH RIVER BASIN | 250 DE
BARTRAM’S BASS THREAT ASSESSMENT AND CONSERVATION PLANNING IN THE UPPER SAVANNAH RIVER BASIN
Detailed knowledge of distribution is necessary to effectively conserve and manage imperiled species. Bartram’s Bass Micropterus sp. cf cataractae, is endemic to the Savannah River basin, USA, and is threatened by habitat alteration and hybridization with nonnative congeners. We sampled 160 sites along tributaries to the upper Savannah River between March and November of 2017 and 2018. To identify the specific factors affecting Bartram’s Bass distributions, we developed generalized linear mixed models and conditional inference trees. Forested landcover, stream gradient, and distance to reservoir were significant predictors of Bartram’s Bass presence. We predicted Bartram’s Bass occurrence in individual stream segments throughout the upper Savannah River basin and used significant model parameters to assess the intensities of individual threats and systematically quantify threats within individual catchments. Lastly, we used Marxan, a conservation-based decision support tool, to define a priority conservation network for Bartram’s Bass within the Savannah River basin. We used this information to identify aggregate catchments expected to contain unthreatened Bartram’s Bass populations. Confirming Bartram’s Bass occurrences within this network will be important to the adaptive management of the species, as will on-the-ground implementation of conservation recommendations.
- Management
- Assessment
- Distribution
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Presenters/Authors
Kyle Brumm
(), Clemson University, kbrumm@g.clemson.edu;
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Josh Vine
(), Clemson University, jvine@g.clemson.edu;
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Brandon Peoples
(), Clemson University, Peoples@g.clemson.edu;
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