Information for LLO web page Oct 2007
Robert Hecky
Department of Biology and Large Lakes Observatory
University of Minnesota, Duluth
2205 5th St., Duluth, Minnesota, USA 55812-2401
Phone 218 726 7926 Fax 218 726 6979
Email rehecky@d.umn.edu
Education
Ph.D.
B.Sc.
Zoology
Biology
Duke University
Kent State University
1971
1966
Research Interests
Nutrient and carbon cycling in aquatic systems; limnology and paleolimnology of the African
Great Lakes; phytoplankton-nutrient interactions; nutrient biogeochemistry; stable isotope
applications to ecology, Hg and organochlorine contamination of food webs
Courses taught
Biology 5861
Recent Publications: 175 total (including 75 on African lakes) Complete list
available upon request. Some recent publications below:
1. Verburg,P. and R.E. Hecky. 2003. Wind patterns, evaporation, and related
physical variables in Lake Tanganyika, East Africa.. Journal of Great Lakes
Research 29(2):48-61.
2. Kidd, K.A., H.A. Bootsma, R.E. Hecky, and R.H. Hesslein. 2003. Mercury
concentrations in the food web of Lake Malawi, East Africa. Journal of Great
Lakes Research 29(2):258-266.
3. Lindenschmidt, K.-E., G. Ollesch, M. Rode, A.S. Kerzhentsev, and R.E. Hecky.
2003. A comparative study of substance transport behavior in two Ugandan and
one Russian catchment areas. Journal of Great Lakes Research 29(2):159-168.
4. Mugidde, R., R.E. Hecky, L. Hendzel and W.D. Taylor. 2003. Pelagic nitrogen
fixation in Lake Victoria, Uganda. Journal of Great Lakes Research 29(2):76-88.
5. Ramlal, P.S., R.E. Hecky, H.A. Bootsma, S.L. Schiff, and M.J. Kingdon. 2003.
Transport and turnover of dissolved organic matter in Lake Malawi. Journal of
Great Lakes Research 29(2): 107-120.
6. Guildford, S.J., R.E. Hecky, W.D. Taylor, R. Mugidde, and H.A. Bootsma. 2003.
Nutrient enrichment experiments in tropical Great Lakes Malawi/Nyasa and
Victoria. Journal of Great Lakes Research 29(2):89-106.
7. Hecky, R.E. 2003. What does the future hold for the Great Lakes of Africa.
African Journal of Aquatic Science 28(1): iii-vi (Invited Guest editorial).
8. Halafo, J., R.E. Hecky and W.D. Taylor. 2004. The artisanal fishery of Lake
Malawi/Niassa, East Africa. African Journal of Aquatic Science 29 (1): 83-89.
9. Campbell, L.M., J. S. Balirwa, D. G. Dixon and R. E. Hecky. 2004.
Biomagnification of mercury in fish from Thruston Bay, Napoleon Gulf, Lake
Victoria (East Africa). African Journal of Aquatic Science 29(1): 91-96.
10. Hecky, R.E., R.E.H. Smith, D.R. Barton, S.J. Guildford, W.D. Taylor, M.N.
Charlton, T. Howell. 2004. The near shore phosphorus shunt: a consequence of
ecosystem engineering by dreissenids in the Laurentian Great Lakes. Can. J. Fish.
Aquat. Sci. 61:1285-1293
11. Tamatamah, R.L., H.C. Duthie and R.E. Hecky. 2005. The importance of
atmospheric deposition to the phosphorus loading of Lake Victoria. (East Africa).
Biogeochemistry 73:325-344.
12. Vollmer, Martin K., Harvey A. Bootsma, Robert E. Hecky, Graeme Patterson,
John D. Halfman, John M. Edmond, David H. Eccles, Ray F. Weiss. 2005. Deepwater warming trend in Lake Malawi, East Africa. Limnol. Oceanogr. 50:727732.
13. Gikuma-Njuru, P. and R.E. Hecky 2005. Nutrient Concentrations in Nyanza
Gulf, Lake Victoria, Kenya: Light limits Algal Demand and Abundance.
Hydrobiologia 534:131-140.
14. Williams, A.E., H.C. Duthie and R.E. Hecky. 2005. Water hyacinth in Lake
Victoria: Why did it vanish so quickly and will it return. Aquatic Botany 81:300314.
15. Higgins, S.N., E.T. Howell, R.E. Hecky, S.J. Guildford and R.E.H. Smith. 2005.
The wall of green: The status of Cladophora glomerata on the northern shores of
Lake’s eastern basin, 1995-2002. J. Great Lakes Res. 31:547-563.
16. Higgins, S.N., R.E. Hecky and S.J. Guildford. 2005. Modeling the growth,
biomass, and tissue phosphorus concentration of Cladophora glomerata in eastern
Lake Erie: Model description and field testing. J. Great Lakes Res. 31:439-455.
17. Campbell, L.M., S.B. Wandera, R. Thacker, G.D. Dixon and R.E. Hecky. 2005.
Trophic niche segregation in the Nilotic icthyofauna of Lake Albert (Uganda,
Africa). Environmental Biology of Fishes 74:247-260.
18. Davies, J.M. and R.E. Hecky. 2005. Initial measurements of benthic
photosynthesis in Lake Erie: Community, spatial and temporal variability. J.
Great Lakes. Res. 31(suppl. 2): in press
19. Luis F. León, Jörg Imberger, Ralph E.H. Smith, Robert E. Hecky, David C.L.
Lam and William M. Schertzer. 2005. Modeling as a Tool for Nutrient
Management in Lake Erie: a Hydrodynamics Study. J. Great Lakes Res. 31
(suppl. 2): 309-318.
20. Guildford, S.J., R.E. Hecky, R.E.H. Smith, M.N. Charlton, W.D. Taylor, L.
Barlow-Busch and R.L. North. 2005. Phytoplankton nutrient status in Lake Erie
in 1997. J. Great Lakes. Res. 31 (suppl. 2): 72-88.
21. Silsbe, G.R., S.J. Guildford and R.E.Hecky. 2006. Variability in chlorophyll a and
photosynthetic parameters in Lake Victoria a nutrient saturated Great Lake.
Limnology and Oceanography 51(5):2052-2063.
22. André, E.R., H.C. Duthie, and R.E. Hecky. 2006. Energy and nutrient dynamics
of rock dwelling cichlids grazing on epilithic periphyton of the littoral zone of
Lake Malawi, Africa. Verh. Verein. Theor. Angew. Limnol.29: in press.
23. Higgins, S.N., R.E. Hecky and S.J. Guildford. 2006. Environmental Controls on
Cladophora growth dynamics in eastern Lake Erie: Application of the Cladophora
growth model. J. Great Lakes Research 32:629-644.
24. Tamatamah, R., R.E. Hecky and H.C. Duthie. 2006. Phosphorus and suspended
sediment loading from two rivers flowing into Lake Victoria Tanzania. Verh.
Verein. Theor. Angew. Limnol. 29:1697-1701.
25. Hecky, R.E., H.A. Bootsma, and E. Odada. 2006. African Lake Management
Initiatives: The Global Connection. Lakes and Reservoirs: Research and
Management 11:203-213.
26. Boesch, D.F., R.E. Hecky, C. O’Melia, D.W. Schindler, and S. Seitzinger. 2006.
Eutrophication of Swedish Seas. Swedish Environmental Protection Agency
Report 5509:67 p.
27. Campbell, L., R.E. Hecky, D.G. Dixon and L. Chapman.2006. Food web structure
and mercury transfer in two contrasting Ugandan highland crater lakes (East
Africa). African Journal of Ecology 44:337-346.
28. Guildford, S.J., Bootsma, H.A., Taylor, W.D., Hecky, R.E. 2007. High variability
of phytoplankton photosynthesis in response to environmental forcing in
oligotrophic Lake Malawi/Nyasa. J. Great Lakes Res. 33:170-185.
29. Higgins, S.N., Malkin, S. Y., Howell, E. T., Guildford, S.J., Campbell, L., HiriartBaer, V., Hecky, R. E. 2007. An ecological review of Cladophora glomerata
(Chlorophyta) in the Laurentian Great Lakes. Accepted J. Phycology.
30. Gondwe, M.J., Guildford, S.J., Hecky, R.E. 2007. Sandy shore benthic N2fixation in Lake Malawi, Africa. Accepted. Verh. Internat. Verein. Limnol.
31. Gondwe, M. J., Guildford, S.J., Hecky. 2007. Planktonic nitrogen fixation in Lake
Malawi/Nyasa. In press. Hydrobiologia.
32. Guildford, S.J., Bootsma, H.A., Taylor, W.D., Hecky, R.E. 2007. High variability
of phytoplankton photosynthesis in response to environmental forcing in
oligotrophic Lake Malawi/Nyasa. J. Great Lakes Res. 33:170-185.