Robert E. DeWreede Ph.D. Academic Address The University of British Columbia Department of Botany 3529-6270 University Blvd. Vancouver, BC, Canada V6T1Z4 Phone: 604-822-6785 E-mail: dewreede@interchange.ubc.ca

Education

• Ph.D. (1973) University of Hawaii
• B.A. (1964) Western Michigan University

Teaching Experience

Dr. DeWreede has taught courses in Marine Ecology, Marine Science, Biology, and Botany.

Research Interests

My research has dealt with both theoretical and practical aspects of the ecology of marine macro-algae, in both temperate and tropical habitats. In Hawaii I studied the ecology and taxonomy of Sargassum, and helped in establishing pilot farms for Eucheuma (a red seaweed and carrageenan producer) in the Philippines and the Confederated States of Micronesia. Under the direction of Dr. M.S. Doty these farms have become a highly successful enterprise in the Philippines.

In British Columbia, my research is on the structure and demography of marine algal populations, and of the biomechanical properties of selected species; along with graduate students, this work has focused on populations of subtidal kelps, Fucus, and various red algae. These algae have been studied for their competitive interactions, susceptibility to herbivores, and their biomechanical properties. This research has produced both mathematical and conceptual models.

Recent graduate students have studied topics such as: Life History and Molecular Studies of the Acrosiphonia/Codiolum/ Chlorochytrium Complex; Biomechanical Studies of Mazzaella (Iridaea), and of Kelp holdfasts; Matrix Models and Algal Life Histories; Cellular Automota Models of High Intertidal Algal Communities; and Ecological Habitat Selection of Haploid and Diploid Phases of "Isomorphic" Red Algae.

Recent Publications

• Milligan, KLD and R.E. DeWreede 2004 Morphological variations do not effectively reduce drag forces at high wave exposure for the macroalgal species, Hedophyllum sessile (in preparation).
• Marsden, Dale, R.E. DeWreede & Colin Levings 2003 Survivorship and Growth of Fucus gardneri after Transplant to an Acid Mine Drainage-polluted Area. Marine Pollution Bulletin 46: 65-73.
• Sussmann, A. & R.E. DeWreede 2002 Host specificity of the endophytic sporophyte phase of Acrosiphonia (Codiolales, Chlorophyta) in southern British Columbia. Phycologia 41: 169-177.
• Shaughnessy, F.J. & R.E. DeWreede 2001 Size, survival and the potential for reproduction in transplants of Mazaella splendens and Mazzaella linearis (Rhodophyta). Marine Ecology Progress Series 222: 109-118.
• Sussmann, A.V.E. & R.E. DeWreede 2001 Life history of Acrosiphonia (Codiolales, Chlorophyta) in southwestern British Columbia, Canada. American Journal of Botany 88: 1535-1544.
• Sussmann, A.V. & R.E. DeWreede 2001 Seasonality of the red algal crust ‘Petrocelis franciscana’ (Gigartinales, Rhodophyta) on boulder strewn shores of southern British Columbia, Canada. Phycological Research 49: 49-59.
• Milligan, K.L.D. & R.E. DeWreede 2000 Variations in holdfast attachment mechanics with developmental stage, substratum-type, season, and wave-exposure for the intertidal kelp species Hedophyllum sessile (C. Agardh) Setchell. Journal of Experimental Marine Biology and Ecology 254: 189-209.
• Marsden, A.D. & R.E. DeWreede 2000 Community structure, reproductive function and metal content of marine intertidal algae near an acid mine drainage outflow. Environmental Pollution 110: 1-10.
• DeWreede, R.E. 1999 The Gigartinales (Rhodophyta): An introduction to some current research. Phycological Research 47: 135-138.
• Scrosati, R. and R.E. DeWreede 1999 Demographic models to simulate the stable ratio between ecologically similar gametophytes and tetrasporophytes in populations of the Gigartinaceae (Rhodophyta). Phycological Research 47: 153-158.
• Chambers PA, RE DeWreede, A Irlandi & H Vandermeulen. 1999. Management issues in macrophyte ecology: a Canadian perspective. Canadian J. Botany. Accepted June, 1999.
• Sussmann A., BK Mable, RE DeWreede & M Berbee. 1999. Identification of green algal endophytes as the alternate phase of Acrosiphonia (Codiolales, Chlorophyta) using ITS1 and ITS2 ribosomal DNA sequence data. Journal of Phycology 35: 607-614.
• Markell R & RE DeWreede. 1998. Mechanisms underlying the effect of the chiton Katharina tunicata (Wood) on the kelp Hedophyllum sessile (C.Agardh) Setchell: size escape and indirect effects. Marine Ecology Progress Series 166: 151-161.
• Shaughnessy FJ, RE DeWreede & EC Bell. 1996. Consequences of morphology and tissue strength to blade survivorship of two closely related Rhodophyta species. Marine Ecology Progress Series. In Press.
• DeWreede, RE & T Klinger. 1988. Reproductive Strategies in Algae. Chapter 13. In: Lovett-Doust, JL and LL Lovett-Doust (Eds.). Pp. 267-284. Plant Reproductive Ecology. Oxford University Press.