CFOS Students

picture of Julie Nielsen

Julie Nielsen

Ph.D. Student

Fisheries
(907) 796-5441
Publications
Scott J, Courtney M, Farrugia TJ, Nielsen JK, Seitz AC . 2015. An approach to describe periodic behavior of Pacific halibut (Hippoglossus stenolepis) Journal of Sea Research. doi: http://dx.doi.org/10.1016/j.seares.2015.1006.1003

Nielsen JK, Hooge PN, Taggart SJ, Seitz AC. 2014. Characterizing Pacific halibut movement and habitat in a Marine Protected Area using net squared displacement analysis methods. Mar Ecol Prog Ser. 517:229-250.

Nielsen JK, Niezgoda GH, Taggart SJ, Cooke SJ, Anson P, Hasler CT, Hanson KC, Carl G . 2012. Advances in Fish Tagging and Marking Technology, Book Symposium 76.. Mobile positioning of tagged aquatic animals using acoustic telemetry with a synthetic hydrophone array (SYNAPS: Synthetic Aperture Positioning System) Ed. In: McKenzie J, Parsons B, Seitz AC, Kopf RK, Mesa M, Phelps Q (eds) . American Fisheries Society,

Gende, S.M., Hendrix, A.N., Harris, K.R., Eichenlaub, B., Nielsen, J.K., and Pyare, S. . 2011. A Bayesian approach for understanding the role of ship speed in whale-ship encounters Ecological Applications. 21:2232-2240.

Moore, Jennifer A., David A. Tallmon, Julie Nielsen, and Sanjay Pyare. 2011. Effects of the landscape on boreal toad gene flow: does the pattern–process relationship hold true across distinct landscapes at the northern range margin? Molecular Ecology . 20:4858-4869.

Taggart, S.J., Mondragon, J., Andrews, A.G., and Nielsen, J.K. . 2008. Spatial patterns and movements of red king and Tanner crabs: implications for the design of marine protected areas. Marine Ecology Progress Series . 365:151-163.

Tamone, S.L., Taggart, S.J., Andrews, A.G., Mondragon, J., Nielsen, J.K. . 2007. The relationship between circulating molting hormones and chela allometry in male Tanner crabs: Evidence for a terminal molt in the genus Chionoecetes. Journal of Crustacean Biology. 27:635-642.

J. K. Nielsen, S. J. Taggart, T. C. Shirley and J. Mondragon. 2007. Spatial distribution of juvenile and adult female Tanner crabs (Chionoecetes bairdi) in a glacial fjord ecosystem: implications for recruitment processes Ices Journal of Marine Science. 64(9):1772-1784. doi: <Go to ISI>://WOS:000252019300015

Nielsen, J.K.. 2005. Master’s thesis, UAF School of Fisheries and Ocean Sciences. Distribution and movement of juvenile Tanner crabs Chionoecetes bairdi in Glacier Bay National Park.

Research Overview
I received a master’s degree in Fisheries from the University of Alaska Fairbanks in 2005. I have been studying the movement of marine species since 2002, when I began tracking Tanner and red king crabs in Glacier Bay, Alaska. During this research, I helped to develop SYNAPS, a new method for obtaining precise positions for tagged fish using acoustic telemetry. The opportunity to develop much-needed methods for quantifying large-scale movement of demersal fishes brought me back to the Fisheries program at the University of Alaska Fairbanks in 2010 to begin my Ph.D. research. The goal of my current research is to develop robust statistical methods to describe and quantify large-scale movement patterns of demersal fish species such as Pacific halibut, Pacific cod, sablefish, and skates using data gathered by electronic tags. To do this, I am working on two main research objectives. First, I am developing a new method of estimating daily latitude and longitude of fish using electronic archival tags that measure and record the earth’s magnetic field. Second, I am leading an effort to develop a model that can describe the migration timing, duration, and pathways of demersal fish species by combining the estimated daily latitudes and longitudes into a plausible movement track. This model is being constructed using information from electronic tags deployed on Pacific halibut and it integrates knowledge of small-scale fish movement from an earlier portion of my dissertation.
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