Eastern prickly pear cactus (Opuntia humifusa) recovery strategy: chapter 13
13. References
Benson, L. 1982. The Cacti of the United States and Canada. Stanford, California: Stanford University Press. 1044 pp.
Brinker, S. 2008. Natural Heritage Project Botanist, Natural Heritage Information Centre, Ontario Ministry of Natural Resources. Personal communication.
Carson, P. 2003. Private Consultant. Personal communication.
Canadian Parks Service. 1991. Eastern Prickly Pear Cactus Management Plan:
Point Pelee National Park. Volume I - Text. Natural Resource Conservation,
Point Pelee National Park. 20 pp.
COSEWIC. 2000. COSEWIC assessment and update status report on the Eastern Prickly Pear Cactus Opuntia humifusa in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 7 pp.
COSEWIC. 2007. http://www.cosewic.gc.ca/eng/sct5/index_e.cfm.
Chiarot, R. 1992. Eastern Prickly Pear Cactus Monitoring Report 1992 at Point Pelee National Park. 42 pp.
Dobbyn, S. 2009. Ecologist, Ontario Parks, Southwest Zone. Personal communication.
Dobbyn, S. 2006. Ecological Land Classification of Fish Point Provincial Nature Reserve. Draft. Ontario Parks, Southwest Zone, London. 17 pp.
Dougan & Associates and V. L. McKay. 2009. An Ecosystem-based Recovery Strategy for the Eastern Prickly Pear Cactus (Opuntia humifusa) - Lake Erie Sand Spit Savannas in Canada (Draft). Species at Risk Act Recovery Strategy Series. Parks Canada Agency, Ottawa. xiv + 36 pp. + Appendices.
Dougan & Associates. 2005a. Point Pelee National Park Ecological Land Classification and Plant Species at Risk Mapping and Status. Prepared for Parks Canada Agency, Point Pelee National Park. 421 pp. + 7 Appendices.
Hutchings, J. 2008. Chair, Committee on the Status of Endangered Wildlife in Canada. Personal communication.
Kevan, P. G. and R. Aiello. 2002. Pollination & seed set mechanisms of Eastern Prickly Pear Cactus, Opuntia humifusa, in Point Pelee National Park. Unpublished report. 10 pp.
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Macoun, J. 1883. Catalogue of Canadian Plants. Part I. - Polypetalae.
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Geomatics International Inc. 1994. Red Cedar Savannah Restoration Plan Point Pelee National Park. Prepared for Resource Conservation Point Pelee National Park. Iii + 60 pp. + folded map.
NatureServe. 2007. NatureServe Explorer: An online encyclopedia of life [web application]. Version 6.1. NatureServe, Arlington, Virginia. http://www.natureserve.org/explorer. (Accessed: February 28, 2007).
Pinkava, D. J. Opuntia. In: Flora of North America Editorial Committee, eds. 1993 +.
Flora of North America North of Mexico. 12+ vols. New York and Oxford. Vol. 4, p. 123.
Reznicek, S. A. 1982. Verification and Prioritization of Rare Species: Point Pelee National Park. Draft Report. Prepared for Parks Canada. 52 pp.
Ritchie, L. 2009. Eastern Mole Researcher, Ontario Ministry of Natural Resources. Personal communication.
Robinson, J. 2008. Wildlife Areas Manager, Ontario, Canadian Wildlife Service, Environment Canada. Personal communications.
White, D. J. 1998. Update COSEWIC Status Report on the Eastern Prickly Pear (Opuntia humifusa) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. 1-7pp.
Woodliffe, P. A. 2002-2007. District Ecologist, Ontario Ministry of Natural Resources, Aylmer District, Chatham Area. Personal communications.
VanDerWal, J., N. Evans, I. Wozniczka and L. Lovett-Doust. 2007a. Demography of Opuntia humifusa located within Point Pelee National Park. Prepared for Parks Canada Agency, Point Pelee National Park. 53 pp.
VanDerWal, J., M. S. Moeen, L. Lovett-Doust and C. L. Stewart. 2007b. Defining habitat requirements of Opuntia humifusa as determined by field and lab studies. Prepared for Parks Canada Agency, Point Pelee National Park. 142 pp.
Zimmermann, H. G., V. C. Moran and J. H. Hoffmann. 2000. The renowned cactus moth, Cactoblastis cactorum: Its natural history and threat to native Opuntia floras in Mexico and the United States of America. Diversity and Distributions, Vol. 6, No. 5 (Sept. 2000), p. 259-269.
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