Dr. Uldis Roze
Professor Emeritus
Ph.D. (Washington University)
Office: Colwin 09- Tel: (718) 997 - 3400 and 3436 E-mail: uldis.roze@verizon.net
Research interests:
In broad terms, I am interested in the ecology and natural history of northeastern U.S. woodlands. Much of the focus has been the natural history of the North American porcupine: food choice and foraging behavior, territorial relationships, dispersal, mating success, parasites and predation, salt drive, the defense reaction including the warning odor generated by the porcupine, porcupine urine chemistry and the role of urine in trail-marking. One current study involves the role of geophagy and natrophagy in the porcupine. Another study, with Drs. David Chapman and Kam Leung at Lakehead University, is examining the histology and microbial flora of the porcupine perineal glands.
Selected Publications:
U. Roze, K.T. Leung, EW. Nix, G. Burton, and D.M. Chapman 2010. Microanatomy and bacterial flora of the perineal glands of the North American porcupine. Can. J. Zool. 88:59-68. PDF
2009. U. Roze. The North American Porcupine, 2nd Ed., 288 pp. Cornell U. Press, Ithaca
Information Here 
2006. U. Roze. Smart Weapons. Natural History 115 (March): 48-53. PDF
2004. U. Roze. Risk factors for injury in porcupines. Wildlife Rehabilitation 21: 61-63.
2003. U. Roze and L. M. Isle. Porcupine. p.p. 371-380 in: Wild Mammals of North America: Biology, Management, and Conservation. Second Edition, George A. Feldhamer, Bruce C. Thompson, and Joseph A. Chapman, Editors. Johns Hopkins University Press, Baltimore and London.
2002. U. Roze. A facilitated release mechanism for quills of the North American porcupine (Erethizon dorsatum). J. Mammalogy, 83(2):381-385.
1997 G. Li, U. Roze, and D.C. Locke. Warning odor of the North American porcupine (Erethizon dorsatum). J. Chem. Ecol. 23: 2737-2754.
1997 D.M. Chapman and U. Roze. Functional histology of quill erection in the porcupine, Erethizon dorsatum.Can. J. Zool. 75:1-10.
1990 U. Roze, D.C. Locke, and N. Vatakis. Antibiotic properties of porcupine quills. J. Chemical Ecology, 16:725-734.
1989 U. Roze. The North American Porcupine. Smithsonian Inst. Press, Washington, D.C., 261 pp.