Faculty Profiles

John Celenza

Nathan Stewart


PhD, University of Alaska Fairbanks
Areas of Interest: marine biology, evolutionary ecology, resilience and adaptation

Current Research

My research focuses on the influence of habitat complexity, potential prey quality, and predator avoidance on resource selection in animals. I am particularly interested in marine invertebrate and fish utilization distributions in association with structurally complex and temporally heterogeneous marine systems, including Arctic under-ice environments, subarctic kelp forests, and tropical coral reef communities.

Courses Taught

  • BI 303 Evolutionary Ecology
  • BI 486/686 Biological Designs for Sustainability
  • BI/ES 539 Coral Reef Dynamics: Shallow Waters, Deep Time
  • BI 569 Tropical Marine Invertebrates
  • CC 106 Biodiversity

Selected Publications

  • Stewart NL, Konar B, Tinker MT (2014) Testing the nutritional-limitation. predator-avoidance, and storm-avoidance hypotheses for restrcited sea otter habitat use in the Aleutian Islands, Alaska. Oecologia, Vol 177, Issue 3, 645-655.
  • Stewart NL, Konar B, Doroff A (2014) Sea otter (Enhydra lutris) foraging habitat use in a heterogeneous environment in Kachemak Bay off Alaska, Bulletin of Marine Science, Vol 90, Issue 4, 921-939 (19).
  • Stewart NL, Konar B (2012) Kelp forests vs. urchin barrens: alternate stable states and their effect on prey quality in the Aleutian Islands, Alaska. Journal of Marine Biology 2012:1–12.
  • Stewart NL (2011) Testing the nutritional limitation and predator avoidance hypotheses for restricted sea otter habitat use in the Aleutian Islands, Alaska. Ph.D. Dissertation, University of Alaska Fairbanks.
  • Freiwald J, Stewart NL, Yates DC, Bernardi G (2009) Isolation and characterization of nine
    polymorphic microsatellite loci of the kelp greenling, Hexagrammos decagrammus, a temperate reef fish. Molecular Ecology Resources 9:563–565.

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