Contact Information
School of Fisheries and Ocean Sciences252 O'Neill
P.O. Box 757220
University of Alaska Fairbanks
Fairbanks, AK 99775-7220
Phone: (907) 474-7407
Fax: (907) 474-7204
rrgradinger@alaska.edu
Rolf Gradinger Professor
Affiliations
- Editorial Board of Polar Biology
- IASC MWG
- CBMP sea ice working
Specialties
- sea ice ecology
- microbial network
- polar ecology
- marine protists
Education
- M.S. 1986 (Marine Biology)
- Ph.D. 1990 University of Kiel (Marine Science)
Office Hours
Wednesdays, 1-2pmResearch Overview
I am interested in the dynamics of microbial communities in polar seas with most of my recent work focusing on the structuring role of sea ice for biological processes in Arctic waters.
My participation in SBI, BEST/BSIERP and the Arctic Ocean Diversity projects focused on the ice-based microbial food web and the coupling of sea ice, pelagic and benthic realms in Arctic waters.
Current Research Projects
- Bering Sea Ecosystem Studies (NSF)
- Sea ice processes in the Bering Sea (National Science Foundation)
- Polychaetes in the fast ice off Barrow, Alaska (National Science Foundation)
This project focuses on the largely unknown role of near-shore Arctic sea ice in the life cycle of marine benthic invertebrates with a major focus on polychaetes. - Arctic marine biodiversity (Sloan Foundation)
- Ecology of ice related ecosystems
Links
- Institute for Polar Ecology Kiel, Germany
- Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
- Census of Marine Life
Publications
Gradinger, R., Bluhm, B., and Iken, K., 2010, Arctic sea-ice ridges--Safe heavens for sea-ice fauna during periods of extreme ice melt?: Deep Sea Research Part II: Topical Studies in Oceanography, v. 57, p. 86-95.
Gradinger, R., Bluhm, B.A., Hopcroft, R.R., Gebruk, A., Kosobokova, K., Sirenko, B., and Wesławski, J.M., 2010, Marine Life in the Arctic, in McIntyre, A.D., ed., Life in the World’s Oceans: Diversity, Distribution and Abundance: Oxford, Blackwell Publishing Ltd, p. 183-202.
Gradinger R (2009) The changing Arctic sea ice landscape. In: Hempel G, Hempel, I. (eds.) The biology of polar seas. Wirtschaftsvlg., Bonn, p 239-246
Gradinger R (2009) Sea-ice algae: Major contributors to primary production and algal biomass in the Chukchi and Beaufort Seas during May/June 2002. Deep Sea Research Part II: Topical Studies in Oceanography 56:1201-1212
Gradinger R, Bluhm B (2009) Assessment of the abundance and diversity of sea ice biota. In: Eicken H, R. Gradinger, M. Salganek, K. Shirasawa, D. K. Perovich, M L (eds) Sea ice field research techniques. University of Alaska Press, Fairbanks, p 283-300
Gradinger R, Bluhm B, Iken K (2009) Arctic sea ice ridges - safe heavens for sea ice fauna during periods of extreme ice melt? Deep Sea Research Part II: Topical Studies in Oceanography DOI: 10.1016/j.dsr2.2009.08.008
Gradinger RR, Kaufman MR, Bluhm BA (2009) Pivotal role of sea ice sediments in the seasonal development of near-shore Arctic fast ice biota. Marine Ecology Progress Series 394:49-63
Co-author for:
Poulin, M., Daugbjerg, N., Gradinger, R., Ilyash, L., Ratkova, T., and von Quillfeldt, C., 2011, The pan-Arctic biodiversity of marine pelagic and sea-ice unicellular eukaryotes: a first-attempt assessment: Marine Biodiversity, v. 41, p. 13-28-28.
Nomura, D., Eicken, H., Gradinger, R., and Shirasawa, K., 2010, Rapid physically driven inversion of the air-sea ice CO2 flux in the seasonal landfast ice off Barrow, Alaska after onset of surface melt: Continental Shelf Research, v. 30, p. 1998-2004.
Grebmeier, J.M., Moore, S.E., Overland, J.E., Frey, K.E., and Gradinger, R., 2010, Biological Response to Recent Pacific Arctic Sea Ice Retreats: EOS, v. 91, p. 161-168.
Bluhm BA, Gradinger RR, Schnack-Schiel SB (2009) Sea ice meio- and macrofauna. In: Thomas D, Dieckmann G (eds) Sea ice. Wiley-Blackwell
Eicken H, R. Gradinger, M. Salganek, K. Shirasawa, D. K. Perovich, Leppäranta M, (eds.) (2009) Sea ice field research techniques, Vol. University of Alaska Press
Bluhm B, Gradinger R (2008) Regional variability in food availability for Arctic marine mammals. Ecological Applications 18:S77-S96
Kaufman M, Gradinger R, Bluhm B, O'Brien D (2008) Using stable isotopes to assess carbon and nitrogen turnover in the Arctic sympagic amphipod Onisimus litoralis. Oecologia 16:11-22
Kirchman DL, Hill V, Cottrell MT, Gradinger R, Malmstrom RR, Parker A (2009) Standing stocks, production, and respiration of phytoplankton and heterotrophic bacteria in the western Arctic Ocean. Deep Sea Research Part II: Topical Studies in Oceanography 56:1237-1248
Manes S, Gradinger R (2009) Small scale vertical gradients of Arctic ice algal photophysiological properties. Photosynthesis Research doi: 10.1007/s11120-009-9489-0
McMinn A, Gradinger R, Nomura D (2009) Biogeochemical properties of sea ice. In: Eicken H, R. Gradinger, M. Salganek, K. Shirasawa, D. K. Perovich, Leppäranta M (eds) Sea ice field research techniques. University of Alaska Press, Fairbanks, p 259-282
Meiners K, Krembs C, Gradinger R (2008) Exopolymer particles: microbial hotspots of enhanced bacterial activity in Arctic fast ice (Chukchi Sea). Aquatic Microbial Ecology 52:195-207
Piraino S, Bluhm BA, Gradinger R, Boero F (2008) Sympagohydra tuuli gen. nov. et sp. nov. (Cnidaria: Hydrozoa) a cool hydroid from the Arctic sea ice. J Marine Biol Assoc UK 88:DOI:10.1017/S0025315408002166
Selected Publications
Gradinger, R.R., Baumann, M.E.M. (1991): Distribution of phytoplankton communities in relationship to the large scale hydrographical regime in Fram Strait 1984. Mar. Biol. 111: 311-321
Kurbjeweit, F., Gradinger, R., Weissenberger, J. (1993): The life cycle of Stephos longipes— an example for cryopelagic coupling in the Weddell Sea (Antarctica). Mar. Ecol. Progr. Ser. 98: 255-262
Ikävalko, J., Gradinger, R (1997): Nanoflagellates and helizoans in the Arctic sea ice studied alive using light microscopy. Polar Biol. 17: 473-481
Gradinger, R., Friedrich, C., Spindler, M. (1999): Abundance, biomass and composition of the sea ice biota of the Greenland Sea pack ice. Deep-Sea Res. 46: 1457-1472
Gradinger, R. (1999): Vertical fine structure of algal biomass and composition in Arctic pack ice. Mar. Biol. 133: 745-754
Giesenhagen, C.; Detmer, A.E.; de Wall, J.; Weber, A.; Gradinger, R.R.; Jochem, F.J. (1999): How are planktonic microbial food webs and algal blooms affected by melting of Antarctic sea ice? - Microcosm simulations. Aquatic Microbial Ecology, 20: 183-201
Mock, T., Gradinger, R. (2000): Effects of nutrient availability on photosynthetic carbon assimilation by cultured Arctic sea ice algae. Mar. Ecol. Progr. Ser. 202: 1-11
