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Washington State University

Gretchen Rollwagen-Bollens

Gretchen Rollwagen-Bollens.


Associate Professor
WSU Vancouver


  • Biological Oceanography and Aquatic Ecology, with primary expertise in the population and community ecology of plankton.
  • Trophic role of heterotrophic planktonic protists 2-200 µm in size (“microzooplankton”) and metazoan planktonic animals 200-2,000 µm in size (“mesozooplankton”) as mediators of carbon and energy flow from primary producers to higher trophic levels such as invertebrates and fish, and especially how these small grazers influence the dynamics of harmful algal blooms and impact ecosystems when introduced to novel environments.
  • Interdisciplinary studies across the domains of aquatic science, political science, and science education.
  • Aquatic Ecology Lab
  • Gretchen Rollwagen-Bollens CV