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    Seasonal movement patterns and habitat occupancy of Kotzebue region inconnu

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    Smith_uaf_0006N_10069.pdf
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    Author
    Smith, Nicholas J.
    Chair
    Sutton, Trent
    Committee
    Seitz, Andrew
    Zimmerman, Christian
    Metadata
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    URI
    http://hdl.handle.net/11122/4631
    Abstract
    Inconnu Stenodus leucichthys are large, long-lived piscivorous whitefish harvested in subsistence and sport fisheries in Alaska. My study was conducted to describe the seasonal movements and habitat occupancy of inconnu in the Selawik and Kobuk River drainages, Alaska, from 2010 through 2012. Methods consisted of surgically implanting acoustic telemetry tags in 80 fish from both rivers in 2010 and 2011 (n = 320), and deploying a fixed array of 20 Vemco VR2W acoustic receiving stations affixed with archival tags throughout Selawik Lake and Hotham Inlet. Tagged inconnu detections revealed that Selawik and Kobuk River inconnu displayed a high degree of spatial and temporal overlap while co-located in the Hotham Inlet/Selawik Lake complex. During the winter period, tagged fish predominately occupied the northern end of Hotham Inlet. In the summer period, fish transitioned from the northern end of Hotham Inlet to Selawik Lake and also the southern end of Hotham Inlet. Average daily displacements for Selawik and Kobuk River inconnu ranged from 2,000 to 10,000 m/day. Water temperature and salinity occupancy ranged from -1.39 to 18.69°C and 0 to 31.3 psu, respectively. No stock-specific or temporal trends in temperature and salinity occupancy by inconnu from the Selawik and Kobuk rivers were detected during my study. In addition to providing a more complete account of the life history of inconnu, these results will aid managers in developing future management strategies.
    Table of Contents
    Chapter 1. Seasonal movement patterns of inconnu in the Kotzebue Region of Northwestern Alaska -- Chapter 2. Seasonal habitat occupancy of inconnu from the Selawik and Kobuk rivers -- Appendices.
    Date
    2013-12
    Type
    Thesis
    Collections
    Fisheries
    Theses supervised by AKCFWRU

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