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Radu Guiasu

Associate Professor

Environmental & Health Studies

   York Hall 361
   416-736-2100 x 88174
   rguiasu@yorku.ca
   Curriculum vitae - Radu Guiasu - Faculty Profile 2015.pdf

Professor Guiasu is the recipient of the Principal's Teaching Excellence Award at Glendon for tenure-track faculty members (2008-2009). He has earned four university degrees (Specialized Honours B.Sc. in Biology from York; and B.Ed. - Education; M.Sc. and Ph.D. - Zoology from the U. of Toronto) and, as an ecologist, he has conducted research in the field, the laboratory, and museum collections.

Doctorate:
Zoology, University of Toronto
Masters:
Zoology, University of Toronto

introduced species; ecology; ethology; crayfish; fish; agonistic behaviours; game theory models; interspecific competition; ecosystem changes over time; phylogenetics; conservation biology; biodiversity.

Books

    •    GUIASU, R. C. 2016. Non-native species and their role in the environment.- the need for a broader perspective. Brill Academic Publishers. Leiden and Boston. (this book in progress will be published in 2016).    
 
     •    GUIASU, R. C. and S. GUIASU. 2003. Entropy in Ecology and Ethology. Nova Science Publishers, Inc., New York. 330 pages.

Journal Articles

     •    GUIASU, R. C. and S. GUIASU. 2014. Weighted Gini-Simpson quadratic index of biodiversity for interdependent species. Natural Science 6: 455-466.     PDF
 
     •    GUIASU, R. C. and S. GUIASU. 2012. The weighted Gini-Simpson index: revitalizing an old index of biodiversity. International Journal of Ecology. Volume 2012, Article ID 478728, 10 pages, doi:10.1155/2012/478728   Publisher's Site 
 
     •    GUIASU, R. C. and S. GUIASU. 2011. The weighted quadratic index of biodiversity for pairs of species: a generalization of Rao's index. Natural Science 3 (9): 795-801.     PDF
 
     •    GUIASU, R. C. and S. GUIASU. 2010. Diversity measures and coarse-graining in data analysis with an application involving plant species on the Galapagos Islands. Journal of Systemics, Cybernetics and Informatics 8 (5): 54-64.     PDF
 
     •    GUIASU, R. C. and S. GUIASU. 2010. New measures for comparing the species diversity found in two or more habitats. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 18 (6): 691-720.     PDF
 
     •    GUIASU, R. C. and S. GUIASU. 2010. The Rich-Gini-Simpson quadratic index of biodiversity. Natural Science 2 (10): 1130-1137.     PDF
 
     •    GUIASU, R. C. 2009. Conservation, status, and diversity of the crayfishes of the genus Cambarus Erichson, 1846 (Decapoda, Cambaridae). Crustaceana 82 (6): 721-742.     PDF
 
     •    GUIASU, R. C. 2007. Conservation and diversity of the crayfishes of the genus Fallicambarus Hobbs, 1969 (Decapoda, Cambaridae), with an emphasis on the status of Fallicambarus fodiens (Cottle, 1863) in Canada. Crustaceana 80 (2): 207-223.     PDF
 
     •    GUIASU, R. C., N. SALEH, E. MOZEL, and D. W. DUNHAM. 2005. Low aggression in juvenile burrowing crayfish, Fallicambarus fodiens (Cottle, 1863) (Decapoda, Cambaridae). Crustaceana 78 (4): 421-428.     PDF
 
     •    GUIASU, R. C. and S. GUIASU. 2003. Conditional and weighted measures of ecological diversity. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 11 (3): 283-300.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 2002. Observations on the timing of moulting events in the crayfish Cambarus robustus Girard, 1852 (Decapoda, Cambaridae). Crustaceana 74 (11): 1365-1378.     PDF
 
     •    PUNZALAN, D., R. C. GUIASU, D. BELCHIOR, and D. W. DUNHAM. 2001. Discrimination of conspecific-built chimneys from human-built ones by the burrowing crayfish Fallicambarus fodiens (Decapoda, Cambaridae). Invertebrate Biology 120 (1): 58-66.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 1999. Aggressive interactions between the crayfishes Cambarus bartonii bartonii and C. robustus (Decapoda, Cambaridae): interspecific and intraspecific contests. Journal of Crustacean Biology 19 (1): 131-146.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 1999. Agonistic contests in male Form I Cambarus bartonii bartonii (Fabricius, 1798) (Decapoda, Cambaridae) crayfish and a comparison with contests of the same type in Cambarus robustus Girard, 1852. Crustaceana 72 (9): 1079-1091.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 1998. Inter-form agonistic contests in male crayfishes, Cambarus robustus (Decapoda, Cambaridae). Invertebrate Biology 117 (2): 144-154.     PDF
 
     •    GUIASU, S. and R. C. GUIASU. 1998. Comparison between some probabilistic indicators useful in the behavioural classification. International Journal of Mathematical and Statistical Sciences 7 (1): 39-59.     PDF
 
     •    GUIASU, R. C. and R. WINTERBOTTOM. 1998. Yellow juvenile colour pattern, diet switching, and the phylogeny of the surgeonfish genus Zebrasoma (Percomorpha, Acanthuridae). Bulletin of Marine Science 63 (2): 277-294.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 1997. Initiation and outcome of agonistic contests in male Form I Cambarus robustus Girard 1852 crayfish (Decapoda, Cambaridae). Crustaceana 70 (4): 480-496.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 1997. Agonistic interactions in male Form II Cambarus robustus Girard 1852 crayfish (Decapoda, Cambaridae) and a comparison between male Form I and Form II intra-form contests. Crustaceana 70 (6): 720-736.     PDF
 
     •    GUIASU, R. C. , D. W. BARR, and D. W. DUNHAM. 1996. Distribution and status of crayfishes of the genera Cambarus and Fallicambarus (Decapoda, Cambaridae) in Ontario, Canada. Journal of Crustacean Biology 16 (2): 373-383.     PDF
 
     •    GUIASU, R. C., D. W. DUNHAM, and D. W. BARR. 1996. Interspecific agonistic contests between male Cambarus bartonii bartonii (Fabricius 1798) and Cambarus robustus Girard 1852 (Decapoda, Cambaridae) crayfish and the possible competition between the two species in Ontario, Canada. Freshwater Crayfish 11 (Proceedings of the International Association of Astacology Eleventh Symposium): 364-377.     PDF
 
     •    GUIASU, R. C. and R. WINTERBOTTOM. 1993. Osteological evidence for the phylogeny of the recent genera of surgeonfishes (Percomorpha, Acanthuridae). Copeia 1993 (2): 300-312.     PDF

Book Chapters

    •    GUIASU, R. C. and S. GUIASU. 2009. Coarse-graining in data analysis with an application involving plant species on the Galapagos Islands. In: Baralt, J., Callaos, N., Chu, H-W, Lesso, W., and C. D. Zinn (Eds.): Proceedings of the 13th World Multi-Conference on Systemics, Cybernetics and Informatics. Volume III: 111-118. International Institute of Informatics and Systemics, Inc. Orlando, Florida, U.S.A., 292 pages.     PDF
 
     •    GUIASU, R. C. 2002. Cambarus. Chapter 16. pp. 609-634 (+ 2 colour plates). In: Holdich, D. M. (Ed.): Biology of Freshwater Crayfish. Blackwell Science, Ltd., Oxford, UK, 702 pages.     PDF
 
     •    GUIASU, R. C. and D. W. DUNHAM. 1999. Aggression and competition in the surface water Cambarus (Decapoda, Cambaridae) crayfish species of Ontario, Canada: an overview. In: Schram, F. R. and J. C. von Vaupel Klein (Eds.): Crustaceans and the Biodiversity Crisis - Proceedings of the Fourth International Crustacean Congress, Amsterdam, The Netherlands, July 20-24, 1998. Volume 1: 701-717. Brill Academic Publishers, Leiden, The Netherlands, 1021 pages.     PDF
 

Other Publications

    •    GUIASU, R. C. 2008. Specious claims? (Invasive species). ROM - The Magazine of the Royal Ontario Museum 40 (4): 26-33. (Spring 2008 issue - cover story).     PDF
 
     •    GUIASU, R. C. 2002. Tunnel syndrome. Rotunda - The Royal Ontario Museum Magazine 35 (1): 22-27 (Summer/Fall 2002 issue).    
 
     •    GUIASU, R. C. 2015. Dire warning on fire ants overstated. Letter to the Editor. The Toronto Star. Thursday, January 1, 2015.    
 
     •    GUIASU, R. C. 2010. New plants are no threat to biodiversity. Letter to the Editor. The Toronto Star. Thursday, July 22, 2010.    
 
     •    GUIASU, R. C. 2008. Invasive controversy: a reply to Nicholas Mandrak. ROM - The Magazine of the Royal Ontario Museum 41 (1): 6. (Summer 2008 issue).     PDF
 
     •    GUIASU, R. C. 2008. Book review of "A Primer of Conservation Biology" (2008) by Richard Primack. Sinauer Associates, Inc., Sunderland, Massachusetts, U.S.A. The Canadian Field-Naturalist 122 (1): 89-90.    
 
     •    GUIASU, R. C. 2007. Book review of "New Zealand - A Natural History" (2006) by Tui De Roy and Mark Jones. Firefly Books, Canada. The Canadian Field-Naturalist 121 (1): 109-110.    
 
     •    SALEH, N., L. MOZEL, R. C. GUIASU, and D. DUNHAM. 2002. Agonistic interactions in the semi-terrestrial crayfish Fallicambarus fodiens: the dynamics between winners and losers. Integrative and Comparative Biology 42 (6): 1304.    
 
     •    GUIASU, R. C. and D. W. DUNHAM. 2002. The ecology, behaviour, and conservation of the vulnerable burrowing crayfish Fallicambarus fodiens (Decapoda, Cambaridae). Integrative and Comparative Biology 42 (6): 1238.   

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