Seasonal depth and temperature use, and diel movements of lake trout (Salvelinus namaycush) in a sub-Arctic lake

• Main Authors: Gallagher, Colin P., Guzzo, Matthew M., Dick, Terry A.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: NRC Research Press (a division of Canadian Science Publishing) 2018
• Subjects: Arctic; Arctic Lake
• Online Access: http://hdl.handle.net/1807/93565; http://www.nrcresearchpress.com/doi/abs/10.1139/AS-2017-0003

We conducted a multi-year acoustic telemetry study of lake trout (Salvelinus namaycush) in a small sub-Arctic lake to investigate depth and temperature occupancy, and vertical activity across seasons (summer, fall, winter) and diel periods (day, twilight, night), and during summer periods of 24 h light (day and twilight). Analyses using generalized additive mixed models revealed a high degree of individual variation in depth occupancy independent of factors hour of day, season, and diel period while temperature occupancy and vertical activity were explained using the three combined factors. Habitats occupied were typically: 9-20 m and 6-9.5 °C in summer, 1-3 m and 2-15 °C in fall during presumed spawning, and ≤6 m and The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author.