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Monday, January 25 • 10:40am - 11:00am
Assessing Short and Long-Term Persistence of Translocated Plains Topminnow Fundulus Sciadicus Populations in Nebraska Streams

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AUTHORS: Joseph D. Thiessen*, Department of Biology, University of Nebraska at Kearney; Keith Koupal, Nebraska Game and Parks Commission; Casey Schoenebeck, Department of Biology, University of Nebraska at Kearney

ABSTRACT: The Plains topminnow Fundulus sciadicus is an endemic Great Plains stream fish that appears to be experiencing reductions in range and abundance, resulting in regional protection and federal listing considerations. In response, Nebraska Natural Legacy Project, Nebraska Game and Parks Commission, and the University of Nebraska at Kearney have proactively begun translocation efforts to reestablish and augment populations throughout the state. Project focus is to assess the long-term persistence of previously reestablished populations and determine the short-term success of semi-regular augmentation efforts. Assessments were completed on 17 stocking locations in 2011, concluding that only 47% (8 sites) showed short-term persistence. Unsuccessfully deemed sites (9 sites) had additional augmentation stocking events conducted in fall of 2014 at a rate of 2500 fish/habitat acre. All sites were revisited in 2015 to assess both the 8 successful sites for long-term persistence and determine short-term success on the 9 augmented sites. Translocation persistence will be determined using probability analysis, which includes species presence, available habitat, and biotic assemblage structure. Results will aid in the development of a state wide management tool for application in future translocation efforts of Plains topminnow.

Monday January 25, 2016 10:40am - 11:00am
Pantlind

Attendees (7)