2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2019 | 2:15 PM - 2:30 PM | QUANTIFYING STREAM HABITAT VARIABLES TO IMPROVE SITE SELECTION FOR ENDANGERED DESERT FISH REINTRODUCTIONS | 250 CF
QUANTIFYING STREAM HABITAT VARIABLES TO IMPROVE SITE SELECTION FOR ENDANGERED DESERT FISH REINTRODUCTIONS
Spikedace (Meda fulgida) and loach minnow (Rhinichthys cobitis) are two endangered fish native to the Southwestern United States. Once widespread within the Gila watershed, these species are now known to occur in only a handful of streams in Arizona and New Mexico. Repopulating stream reaches where these species are currently depleted or extirpated is crucial to their recovery, however relatively little is known about the habitat features of streams that promote spikedace and loach minnow persistence. We surveyed 19 stream reaches across the region in sites where the two species once existed, still exist, or where repatriations have occurred or may occur in the future. Streams occupied by spikedace and loach minnow clustered separately from unoccupied streams in multivariate habitat space, indicating an association of those species with particular habitat characteristics. Streams with loach minnow had smaller benthic substrates (gravels and cobbles), consistent with what we know about their life history and habitat preferences. Streams with spikedace shared a suite of habitat characteristics including a high proportion of run habitat.
- Management
- Restoration
- Population
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Presenters/Authors
Jack Torresdal
(), Northern Arizona University, jtorresdal@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -