Dr. Christian H. Fritsen

Research Professor Biology Vice President Academic and Faculty Affairs
43687269737469616e2e4672697473656e406472692e656475
775-673-7487
775-673-7485
algae, ecosystems, microbial ecology, nutrients, water quality, lakes, rivers, reservoirs, climate change, Antarctica,

Professional Interests

As a systems microbial ecologist, Dr. Fritsen studies the transfer of energy and cycling of materials within ecosystems that are mediated by bacteria, algae and protists. His work focuses on how the microbes and their interactions are influenced by the time-varying physical features of their environment. One long-standing area of interest has been on the interaction between seasonal ice dynamics and microbial production in polar ice environments. Such studies provide insights into microbial adaptations, microbial interactions within complex systems, and the possibility of life supporting habitats beyond earth. This professional interest also leads to studies of the interactions between a society's use of nutrients that influences microalgal seasonal production cycles and community structure which, in turn, affect the beneficial uses of aquatic ecosystems.

Having these interests mandates that the majority of Dr. Fritsen's time involves planning, conducting and reporting on field work and laboratory-based studies. Teaching and advising in both undergraduate and graduate programs at the University of Nevada Reno in addition to public outreach seminars and school visitations also allows ample opportunity for obtaining fresh perspectives through the interactions with the next generation of scientists and stewards of our environment.

Research Areas of Interest and Expertise

  • Systems Ecology
  • Algal Ecophysiology
  • Polar Ecosystems
  • Polar Limnology and Oceanography
  • Watershed Nutrient Balance
  • Stoichiometry
  • Climate Change and Phenology
  • Hydrological Optics
  • Ecosystems Modeling
  • Low Temperature Adaptations

Research Projects

Laboratory Website: Systems Microbial Ecology Laboratory

Education

DegreeYearInstitutionArea
Postdoc 1998 Montana State University, Bozeman Biological Sciences Dept
Ph.D. 1995 University of Southern California, Los Angeles Biological Sciences
B.S. 1988 Montana State University, Bozeman Biology

Professional Activities

Courses Taught at the University of Nevada, Reno

  • Hydrologic Optics (ERS-701C)
  • Trophodynamics (ERS-791)
  • Aquatic Ecology (BIOL-420/620)
  • Advanced Limnology (ERS-701D)
  • Current Issues in Microbioal Ecology Seminar (ERS-793C)

Publications

2015

Dugan, H., Doran, P., Wagner, B., Kenig, F., Fritsen, C. H., Arcone, S., Kuhn, E., Ostrom, N., Warnock, J., Murray, A. E. (2015). 27 m of lake ice on an Antarctic lake reveals past hydrologic variability, Cryosphere

2014

Kuhn, E., Ichimura, A., Peng, V., Fritsen, C. H., Trubl, G., Doran, P., Murray, A. (2014). Brine Assemblages of Ultrasmall Microbial Cells within the Ice Cover of Lake Vida, Antarctica, Applied and Environmental Microbiology, 80, (12), 3687-3698, doi: 10.1128/aem.00276-14

2012

Davis, C., Fritsen, C. H., Wirthlin, E., Memmott, J. (2012). High rates of primary productivity in a semi-arid tailwater: implications for self-regulated production, River Research and Applications, 28, (10), 1820-1829, doi: 10.1002/rra.1573
Lowe, A., Ross, R., Quetin, L., Vernet, M., Fritsen, C. H. (2012). Simulating larval Antarctic krill growth and condition factor during fall and winter in response to environmental variability, Marine Ecology Progress Series, 452, 27-43, doi: 10.3354/meps09409
Vernet, M., Kozlowski, W., Yarmey, L., Lowe, A., Ross, R., Quetin, L., Fritsen, C. H. (2012). Primary production throughout austral fall, during a time of decreasing daylength in the western Antarctic Peninsula, Marine Ecology Progress Series, 452, 45-61, doi: 10.3354/meps09704
Murray, A. E., Kenig, F., Fritsen, C. H., McKay, C., Cawley, K., Edwards, R., Kuhn, E., McKnight, D., Ostrom, N., Peng, V., Ponce, A., Priscu, J., Samarkin, V., Townsend, A., Wagh, P., Young, S., Yung, P., Doran, P. (2012). Microbial life at -13 C in the brine of an ice-sealed Antarctic lake, Proceedings of the National Academy of Sciences, doi: 10.1073/pnas.1208607109

2011

Carroll, R., Memmott, J., Warwick, J., Fritsen, C. H., Bonzongo, J., Acharya, K. (2011). Seasonal Variation of Mercury Associated with Different Phytoplankton Size Fractions in Lahontan Reservoir, Nevada, WATER AIR AND SOIL POLLUTION, 217, (1-4), 221-232, doi: 10.1007/s11270-010-0581-z
Davis, C., Fritsen, C. H., Wirthlin, E., Memmott, J. (2011). High rates of primary productivity in a semi-arid tailwater: implications for self-regulated production, River Research and Applications, 25, doi: 10.1002/rra.1573
Fritsen, C. H., Memmott, J., Ross, R., Quetin, L., Vernet, M., Wirthlin, E. (2011). The timing of sea ice formation and exposure to photosynthetically active radiation along the Western Antarctic Peninsula, Polar Biology, 34, (5), 683-692, doi: 10.1007/s00300-010-0924-7
Fritsen, C. H., Wirthlin, E., Momberg, D., Lewis, M., Ackley, S. (2011). Bio-optical properties of Antarctic pack ice in the early austral spring, Deep-Sea Research Part Ii-Topical Studies in Oceanography, 58, (9-10), 1052-1061, doi: 10.1016/j.dsr2.2010.10.028
Rost, A., Fritsen, C. H., Davis, C. (2011). Distribution of freshwater diatom, Hydrobiologia

2010

Fritsen, C. H., Wirthlin, E., Momberg, D., Memmott, J. (2010). Seasonal ultraviolet radiation and photosynthetically active radiation absorption by pack ice microbiota in the Southern Ocean., Annals of Glaciology, submitted
Lee, B., McGwire, K., Fritsen, C. H. (2010). Identification and quantification of aquatic vegetation with hyperspectral remote sensing in western Nevada rivers, USA, International Journal of Remote Sensing, 32, (24), 9093-9117, doi: 10.1080/01431161.2010.549850

2009

Davis, C., Memmott, J., Fritsen, C. H. (2009). Walker River periphyton, 33-73
Fritsen, C. H., Memmott, J., Davis, C., Wirthlin, E. (2009). Walker Lake: Hypolimnetic oxygen deficit assessment and associated limnological factors, 111-130
Quetin, L., Ross, R., Vernet, M., Kozlowski, W., Yarmey, L., Lowe, A., Oakes, S., Fritsen, C. H., Amsler, M., Schofield, O., Steinberg, D. (2009). Grazing by larval Antarctic krill and phytoplankton dynamics during the fall west of the Antarctic peninsula
Raymond, J., Janech, M., Fritsen, C. H. (2009). Novel ice-binding proteins from a psychrophilic Antarctic alga (Chlamydomonadaceae, Chlorophyceae)

2008

Ackley, S., Lewis, M., Fritsen, C. H., Xie, H. (2008). Internal melting in Antarctic sea ice: Development of ''gap layers'', Geophysical Research Letters, 35, (11)
Fritsen, C. H., Memmott, J., Stewart, F. (2008). Inter-annual sea-ice dynamics and micro-algal biomass in winter pack ice of Marguerite Bay, Antarctica, Deep Sea Research (Part II, Topical Studies in Oceanography), 55, (18-19), 2059-2067, doi: 10.1016/j.dsr2.2008.04.034
Fritsen, C. H., Taylor, B., Quetin, L., Ross, R., Vernet, M. (2008). The interaction between phytoplankton, ice, ice algae and krill (PIIAK): Modeling winter ice algal biomass in relation to sea ice and phytoplankton dynamics., Ocean Sciences Meeting: From the Watershed to the Global Ocean., 121-122
Peternel-Staggs, K., Saito, L., Fritsen, C. H. (2008). Evaluation of a modeling approach to assess nitrogen assimilative capacity due to river restoration, 134, (5), 474-486, Doi 10.1061/(Asce)0733-9496(2008)134:5(474)
Ross, R., Quetin, L., Fritsen, C. H., Yarmey, L., Kozlowski, W., Sines, K., Vernet, M. (2008). Modeling phytoplanton biomass (chlorophyll a) during fall and winter of 2001 and 2002 at 64 and 68 degrees S in coastal water west of the Antarctic peninsula
Thomas, D., Fogg, G., Convey, P., Fritsen, C. H., Gili, J., Gradinger, R., Laybourn-Parry, J., Reid, K., Walton, D. (2008). The Biology of Polar Regions
Doran, P., Fritsen, C. H., Murray, A. E., Kenig, F., McKay, C., Kyne, J. (2008). Entry Approach into pristine ice-sealed lakes - Lake Vida, East Antarctica, a model ecosystem, Limnology and Oceanography: Methods, 6, 542-547

2007

Mosier, A., Murray, A., Fritsen, C. H. (2007). Microbiota within the perennial ice cover of Lake Vida, Antarctica, FEMS Microbiology Ecology, 59, (2), 274-288
Quetin, L., Ross, R., Fritsen, C. H., Vernet, M. (2007). Ecological responses of Antarctic krill to environmental variability: Can we predict the future?, Antarctic Science, 19, (2), 253–266, doi: 10.1017/S0954102007000363
Raymond, J., Fritsen, C. H., Shen, K. (2007). An ice-binding protein from an Antarctic sea ice bacterium, FEMS Microbiology Ecology, 61, 214-221
Saito, L., Redd, C., Chandra, S., Atwell, L., Fritsen, C. H., Rosen, M. (2007). Quantifying foodweb interactions with simultaneous linear equations: Stable isotope models of the Truckee River, USA, Journal of the North American Benthological Society, 26, (4), 642-662

2006

Fritsen, C. H., Latham, Z., Memmott, J., Davis, C., Rost, A. (2006). Dissolved oxygen dynamics in the Carson River, Nevada: Results from field programs during the summers of 2003 and 2004, 43
Green, M., Fritsen, C. H. (2006). Spatial variation of nutrient balance in the Truckee River, California-Nevada, 1-16
Kish, S., Bartlett, J., Warwick, J., Mckay, A., Fritsen, C. H. (2006). Long-term dynamic modeling approach to quantifying attached algal growth and associated impacts on dissolved oxygen in the lower Truckee River, Nevada, 132, (10), 1366-1375, Doi 10.1061/(Asce)0733-9372(2006)132:10(1366)
Kish, S. M., Bartlett, J. A., Warwick, J. J., McKay, W. A., Fritsen, C. H. (2006). Long-term Dynamic Modeling Approach to Quantifying Attached Algal Growth and Associated Impacts on Dissolved Oyxgen in the Lower Truckee River, Nevada, Journal of Environmental Engineering, 10, 132, 1366-1375

2005

Garrison, D., Gibson, A., Coale, S., Gowing, M., Okolodkov, Y., Fritsen, C. H., Jeffries, M. (2005). Sea-ice microbial communities in the Ross Sea: autumn and summer biota, Marine Ecology-Progress Series, 300, 39-52
McKay, C., Andersen, D., Pollard, W., Heldmann, J., Doran, P., Fritsen, C. H., Priscu, J. (2005). Polar lakes, streams, and springs as analogs for the hydrological cycle on mars
Priscu, J., Edwards, E., Paerl, H., Fritsen, C. H., Dore, J., Lisle, J., Wolf, C., Mikucki, J. (2005). Perennial Antarctic Lake Ice: A Refuge for Cyanobacteria in an Extreme Environment, 22-49
Sada, D., Brock, J., Fritsen, C. H., Rosamond, C., Shope, C., Benner, S., McKay, W. (2005). Baseline Hydrologic and Biological Monitoring, McCarran Ranch Restoration Project Lower Truckee River, Nevada (2003-2004), DHS Publication No. 41220

2004

Gowing, M., Garrison, D., Gibson, A., Krupp, J., Jeffries, M., Fritsen, C. H. (2004). Bacterial and viral abundance in Ross Sea summer pack ice communities, Marine Ecology-Progress Series, 279, 3-12
Stewart, F., Fritsen, C. H. (2004). Bacteria-algae relationships in Antarctic sea ice, Antarctic Science, 16, (2), 143-156
Tranter, M., Fountain, A., Fritsen, C. H., Lyons, W., Priscu, J., Statham, P., Welch, K. (2004). Extreme hydrochemical conditions in natural microcosms entombed within Antarctic ice, Hydrological Processes, 18, 379-387
Shope, C. L., Benner, S. G., Brock, J. T., Sada, D. W., Fritsen, C. H. (2004). Influence of temproal and spatial river temperature heterogeneity on nutrient cycling
Warwick, J. J., Kish, S. M., Bartlett, J. A., McKay, W. A., Fritsen, C. H. (2004). Modeling linkages between groundwater, surface water, and periphyton-driven oxygen dynamics in the lower Truckee River, Nevada

2003

Doran, P., Fritsen, C. H., McKay, C., Priscu, J., Adams, E. (2003). Formation and character of an ancient 19-m ice cover and underlying trapped brine in an "ice-sealed" east Antarctic lake, Proceedings of the National Academy of Sciences of the United States of America, 100, (1), 26-31
Garrison, D., Jeffries, M., Gibson, A., Coale, S., Neenan, D., Fritsen, C. H., Okolodkov, Y., Gowing, M. (2003). Development of sea ice microbial communities during autumn ice formation in the Ross Sea, Marine Ecology-Progress Series, 259, 1-15
Marion, G., Fritsen, C. H., Eicken, H., Payne, M. (2003). The search for life on Europa: Limiting environmental factors, potential habitats, and Earth analogues, Astrobiology, 3, (4), 785-811

2002

Doran, P., Priscu, J., Lyons, W., Walsh, J., Fountain, A., McKnight, D., Moorhead, D., Virginia, R., Wall, D., Clow, G., Fritsen, C. H., McKay, C., Parsons, A. (2002). Antarctica climate cooling and terrestrial ecosystems response, Nature, 415, 517-520
Fritsen, C. H. (2002). Snow and ice environments

2001

Fritsen, C. H., Coale, S., Neenan, D., Gibson, A., Garrison, D. (2001). Biomass, production and microhabitat characteristics near the freeboard of ice floes in the Ross Sea, Antarctica, during the austral summer, Annals of Glaciology, 33, 280-286
Fritsen, C. H., Coale, S., Neenan, D., Gibson, A., Garrison, D. (2001). Biomass, production and microhabitat characteristics near the freeboard of ice floes in the Ross Sea, Antarctica, during the austral summer, Annals of Glaciology, 33, 280-286
Mueller, D., Vincent, W., Pollard, W., Fritsen, C. H. (2001). Glacial cryoconite ecosystems: A bipolar comparison of algal communities and habitats, 173-197
Raymond, J., Fritsen, C. H. (2001). Semipurification and ice recrystallization inhibition activity of ice-active substances associated with Antarctic photosynthetic organisms, Cryobiology, 43, (1), 63-70, DOI 10.1006/cryo.2001.2341

2000

Fritsen, C. H., Grue, A., Priscu, J. (2000). Distribution of organic carbon and nitrogen in surface soils in the McMurdo Dry Valleys, Antarctica, Polar Biology, 23, 121-128
Raymond, J., Fritsen, C. H. (2000). Ice-active substances associated with Antarctic freshwater and terrestrial photosynthetic organisms, Antarctic Science, 12, (4), 418-424

1999

Fritsen, C. H., Priscu, J. (1999). Seasonal change in the optical properties of the permanent ice cover on Lake Bonney, Antarctica: Consequences for lake productivity and phytoplankton dynamics, Limnology and Oceanography, 44, (2), 447-454
Priscu, J., Wolf, C., Takacs, C., Fritsen, C. H., Laybourn-Parry, J., Roberts, E., Sattler, B., Lyons, W. (1999). Carbon transformations in a perennially ice-covered Antarctic lake, Bioscience, 49, (12), 997-1008
Psenner, R., Sattler, B., Wille, A., Fritsen, C. H., Priscu, J., Felip, M., Catalan, J. (1999). Lake ice microbial communities in alpine and antarctic lakes, 17-31

1998

Adams, E. E., Priscu, J. C., Fritsen, C. H., Smith, S. R., Brackman, S. L. (1998). Permanent ice covers if the McMurdo Dry Valley Lakes, Antartica: bubble formation and metamorphism
Fritsen, C. H. (1998). Flood-freeze cycles and microalgal dynamics in Antarctic pack ice, 73, 1-21
Fritsen, C. H., Adams, E., McKay, C., Priscu, J. (1998). Permanent ice covers of the McMurdo Dry Valleys lakes, Antarctica: liquid water contents, 72, 269-279
Fritsen, C. H., Priscu, J. (1998). Cyanobacterial assemblages in permanent ice covers on Antarctic lakes: distribution, growth rate, and temperature response of photosynthesis, Journal of Phycology, 34, 587-597
Priscu, J., Fritsen, C. H., Adams, E., Giovannoni, S., Paerl, H., McKay, C., Doran, P., Gordon, D., Lanoil, B., Pinckney, J. (1998). Perennial Antarctic lake ice: an oasis for life in a polar desert, Science, 280, 2095-2098

1997

Fritsen, C. H., Sullivan, C. (1997). Distributions and dynamics of microbial communities in the pack ice of the Western Weddell Sea, Antartica, 101-106

1996

Ackley, S. F., Fritsen, C. H., Lytle, V. I., Sullivan, C. W. (1996). Freezing-driven upwelling in Antarctic sea-ice biological systems, Polar Biology, 9, 45-59
Fritsen, C. H., Priscu, J. (1996). Photosynthetic characteristics of cyanobacterial consortia in permanent ice-covers on lakes in the Antarctic Dry Valleys, 7
Grue, A. M., Fritsen, C. H. (1996). Nitrogen fixation within permanent ice covers on lakes in the McMurdo Dry Valleys, Antarctica, Antarctic Journal of the United States, 30, (5), 218-220
Priscu, J. C., Fritsen, C. H. (1996). Antarctic lake ice microbial consortia: Origin, distribution and growth physiology, Antarctic Journal of the United States, 30, (5), 223-224

1995

Ackley, S., Arrigo, K., Fritsen, C. H. (1995). Modeling studies of sea ice-biological interactions: A contribution to Southern Ocean GLOBEC or: physical-biological modeling of Antarctic sea ice communities: A contribution to Southern Ocean GLOBEC, 1-8
Arrigo, K., Dieckmann, G., Gosselin, M., Robinson, D., Fritsen, C. H., Sullivan, C. (1995). High-Resolution Study of the Platelet Ice Ecosystem in Mcmurdo Sound, Antarctica - Biomass, Nutrient, and Production Profiles within a Dense Microalgal Bloom, Marine Ecology Progress Series, 127, (1-3), 255-268
Fritsen, C. H. (1995). Chapter IV: Coupling snowfall, ocean heat fluxes, and atmospheric temperatures to flood-freeze cycles and sea-ice algal dynamics: a modelling approach, 1-54
Fritsen, C. H. (1995). Ecology of Antarctic pack-ice microbial community, 268

1994

Ackley, S., Fritsen, C. H., Lytle, V., Sullivan, C. (1994). Freezing driven upwelling in Antarctic sea ice ecological systems, all
Fritsen, C. H., Lytle, V., Ackley, S., Sullivan, C. (1994). Autumn bloom of Antarctic pack-ice algae, Science, 266, 782-784
Fritsen, C. H., Lytle, V., Ackley, S., Sullivan, C. (1994). Autumn bloom of Antarctic sea-ice algae linked to thermohaline fluxes and convective brine motion, 1-13

1993

Fritsen, C. H., Mordy, C., Sullivan, C. (1993). Primary production in the Weddell Sea pack ice during the austral autumn, Antarctic Journal of the United States, XXVIII, (5), 124-126

1992

Fritsen, C. H., Iturriaga, R., Sullivan, C. (1992). Influence of particulate matter on spectral irradiance fields and energy transfer in the Eastern Arctic Ocean., 1750, 527-541
Sullivan, C., Fritsen, C. H., Mordy, C. (1992). Microbial production in antarctic pack ice: time series studies at the US-Russian drifting ice station, 1-6

No Status Year Indicated

Arrigo, K., Dieckmann, G., Gosselin, M., Robinson, D., Fritsen, C. H., Sullivan, C.High resolution study of the platelet ice ecosystem in McMurdo Sound, Antarctica: biochemical composition of microalgae and nutrient status, all
Arrigo, K., Fritsen, C. H., Sullivan, C.Influence of thermodynamic release of high chI a: accumulation from annual sea ice ecosystems on the Southern Ocean carbon cycle, all
Grue, A., Fritsen, C. H., Priscu, J.Nitrogen fixation by cyanobacteria within permanent ice covers on lakes in the Antartic Dry Valleys, 1-6

Authors

Abstract