EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/06/2017 | 10:00 AM - 10:15 AM | SPATIAL CONNECTIVITY OF ADFLUVIAL AND STREAM-RESIDENT LAHONTAN CUTTHROAT TROUT: IMPLICATIONS FOR POPULATION RESILIENCE, MANAGEMENT, AND RESTORATION | 306C
SPATIAL CONNECTIVITY OF ADFLUVIAL AND STREAM-RESIDENT LAHONTAN CUTTHROAT TROUT: IMPLICATIONS FOR POPULATION RESILIENCE, MANAGEMENT, AND RESTORATION
Most adfluvial populations of Lahontan cutthroat trout (LCT) have been extirpated due, in part, to severed connections between lakes and tributaries. Consequently, there is significant interest in understanding population connections across lake and stream habitats to facilitate restoration. We studied spatial stream use of adfluvial and stream-resident LCT in the Summit Lake Basin, which has the largest viable population of adfluvial LCT, a robust population in the stream that feeds the lake, and a stream system free of migration barriers. Adfluvial spawning adults concentrated their activity in low stream reaches, but also migrated nearly to the headwaters. Throughout the stream system, we saw stream-tagged LCT migrate to the lake and found evidence of stream-residency. High flows corresponded to more small LCT migrating to the lake and more adfluvial LCT entering the stream to spawn, which led to more accessing the upper watershed. Results suggest high spatial connectivity between adfluvial and stream-resident populations that will increase in wet years, and that stream-residents may provide emigrants to the lake. Overall population resilience relies on a strong connection between lake and stream habitats.
- C15 Population Ecology
- C12 Conservation Ecology
- C02 Fish and Other Aquatic Vertebrates
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Presenters/Authors
Teresa Campbell
(), University of Nevada Reno, tcampbs@gmail.com;
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James Simmons
(), University of Nevada Reno, jamessimmons@nevada.unr.edu;
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Christopher Jerde
(), University of Nevada Reno, Global Water Center, cjerde@ucsb.edu;
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William Cowan
(), Summit Lake Paiute Tribe, william.cowan@summitlaketribe.org;
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Sudeep Chandra
(), University of Nevada Reno, Global Water Center, limnosudeep@me.com;
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Zeb Hogan
(), University of Nevada Reno, Global Water Center, zhogan@unr.edu;
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