Dr. Gretchen Rollwagen-Bollens
Courses
| Course ID | Title | Meeting Time | Location | Semester | Syllabus |
|---|---|---|---|---|---|
| Biology 308 | Marine Biology | M,W 10:35 -- 11:50 am | VECS 105 | Spring 2012 | |
| Geology 230 | Introductory Oceanography | Tu,Th 10:35 - 11:50 am | VECS 105 | Spring 2012 | |
| NATRS 595 | Science Pedagogy Seminar for GK-12 Fellows | Thursdays 4:00 - 6:00 pm | VELS 240 | Spring 2012 |
Research
My research interests fall broadly within Biological Oceanography and Aquatic Ecology, with a focus on the community ecology of zooplankton, in particular the role of mesozooplankton (organisms < 2mm in size) and microzooplankton (organisms <200 µm in size) in pelagic food webs. I have investigated the distribution, composition and trophic ecology of meso- and microzooplankton in a range of aquatic environments, from the open ocean (equatorial Pacific) to coastal and estuarine regions (coastal CA, San Francisco Estuary, Columbia River Estuary) to freshwater rivers and lakes (Columbia River, Vancouver Lake). I am especially interested in how microzooplankton impact the flow of energy through the lower food web through their behavior as predators and grazers, as well as prey for higher organisms, and their role in modulating harmful algal blooms. I am currently funded by the National Science Foundation, as well as the State of Washington Water Research Center.
In addition to my scientific research activity, I am also very interested in science education and pedagogy, in particular training science graduate students as educators and providing professional development for in-service science teachers. I am currently lead PI and Project Director for a $2.7 million National Science Foundation “GK-12” grant that partners WSUV environmental science graduate students with public school teachers in the Vancouver, Camas, Evergreen, Battle Ground and La Center school districts in SW Washington (see the GK-12 website for more information: http://research.vancouver.wsu.edu/gk12). I also teach science pedagogy courses for graduate students at WSUV, and in the past at UC Berkeley.
Graduate Students
Tammy Lee, MS Candidate in Environmental Science
Recent Publications
Rollwagen-Bollens G, Bollens S, Gonzalez A, Zimmerman J, Lee* T, Emerson J. (Submitted) Copepod grazing impact before, during and following filamentous cyanobacteria blooms in a large, shallow temperate lake (Vancouver Lake, WA, USA). Hydrobiologia.
Friedenberg L, Bollens S, Rollwagen-Bollens G. (2012) Feeding dynamics of larval Pacific herring (Clupea pallasi) on natural assemblages of microplankton. Fisheries Oceanography doi: 10.1111/j.1365-2419.2011.000611.x
Bollens S, Quenette J, Rollwagen-Bollens G. (2012) Predator-enhanced diel vertical migration in a planktonic dinoflagellate. Marine Ecology Progress Series doi: 10.3354/meps09467
Bollens S, Breckenridge J, Cordell J, Rollwagen-Bollens G, Kalata O. (2012) Seasonal co-occurrence and potential competition between non-indigenous and native planktonic copepods in the lower Columbia River estuary. Aquatic Invasions doi: 10.3391/ai.2012.7.1
Boyer* (formerly Duerr) J, Rollwagen-Bollens G, Bollens S. (2011) Microzooplankton grazing on cyanobacteria in Vancouver Lake, Washington, USA. Aquatic Microbial Ecology 64: 163-174
Rollwagen-Bollens, G, Gifford* S, Bollens S. (2011) The Role of Protistan Microzooplankton in the Upper San Francisco Estuary Planktonic Food Web: Source or Sink? Estuaries & Coasts 34: 1026-1038
Bollens S, Rollwagen-Bollens G, Quenette J, Bochdansky A. (2010) Cascading Migrations and Implications for Vertical Fluxes in Pelagic Ecosystems. Journal of Plankton Research 33: 349-355
Bochdansky, A.B., Bollens, S.M., Rollwagen-Bollens, G.C. (2010) The effect of microzooplankton and copepods on vertical carbon fluxes in and around phytoplankton thin layers. Marine Ecology Progress Series 401: 179-196.
Gifford*, S.M., Rollwagen-Bollens, G.C., Bollens, S.M. (2007) Mesozooplankton omnivory in the upper San Francisco Estuary. Marine Ecology Progress Series 348: 33-46
Slaughter, A.M., Bollens, S.M., Rollwagen Bollens, G.C. (2006) Grazing impact of mesozooplankton in an upwelling region off northern California, 2000-2003. Deep-Sea Research II 53: 3099-3115
Rollwagen Bollens, G.C., Bollens, S.M., Penry, D.L. (2006) Vertical distribution of micro- and nanoplankton in the San Francisco Estuary, in relation to hydrography and predators. Aquatic Microbial Ecology 44:143-163
Rollwagen Bollens, G.C. and Penry, D.L. (2003) Feeding dynamics of Acartia spp. copepods in a large, temperate estuary (San Francisco Bay, CA). Marine Ecology Progress Series 257: 139-158
Rollwagen Bollens, G.C. and Landry, M.R. (2000) The biological response to iron fertilization in the eastern equatorial Pacific (IronEx II). II. Mesozooplankton abundance, biomass, depth distribution and grazing. Marine Ecology Progress Series 201: 43-56.
Coale, K., Johnson, K., Fitzwater, S., Gordon, R., Tanner, S., Chavez, F., Ferioli, L., Sakamoto, C., Rogers, P., Millero, F., Steinberg, P., Nightingale, P., Cooper, D., Cochlan, W., Landry, M., Constantinou, J., Rollwagen, G., Trasvina, A., Kudela, R. (1996) A massive phytoplankton bloom induced by an ecosystem-scale iron fertilization experiment in the equatorial Pacific Ocean. Nature 383: 495-501.
* Graduate students under my direct supervision.
Education
- Ph.D. Integrative Biology, University of California, Berkeley
- M.S. Biological Oceanography, University of Hawaii
- A.B. Biology, Harvard University