Invasiveness Ranking System for Non-Native Plants of Alaska

Paddock, Raymond, E. III. Environmental Technician, Native Lands and Resources, Central Council Tlingitand Haida Indian Tribes of Alaska. 320 West Willoughby Ave. Suite 300, Juneau, AK 99801. Tel: (907)463-7184 – Pers. comm.Palmblad, I.G. 1968. Competition in experimental populations of weeds with emphasis on the regulation ofpopulation size. Ecology. 49(1): 26-34.Panciera, M.T., S.D. Sparrow, R.G. Gavlak and W.E. Larson. 1990. Evaluation of forage legume potentialat Fairbanks, Point MacKenzie, and Soldotna. Alaska Agricultural and Forestry Experiment Station.Research Progress Reports 13.Parchoma G. 2004. Scentless chamomile. Matricatia perforata Merat. In: Guide to Weeds in British Columbia.Ministry of Agriculture, Food and Fisheries. Open Learning Agency. Available: http://www.weedsbc.ca/index.htmlParker, I.M. 2000. Invasion dynamics of Cytisus scoparius: A matrix model approach. Ecological Applications10:726-743.Parker, K.F. 1990. An illustrated guide to Arizona weeds. The University of Arizona Press, Tucson. Availablehttp://www.uapress.arizona.edu/online.bks/weeds/titlweed.htmParker, I.M., S.K. Mertens, D.W. Schemske. 1993. Distribution of seven native and two exotic plants in atallgrass prairie in southeastern Wisconsin: the importance of human disturbance. American MidlandNaturalist 130: 43-55.Parsons, W.T. 1957. St. John’s wort in Victoria. History, distribution, control. The Journal of Agriculture,Victoria 55: 781-788.Pavlychenko, T.K. and J.B. Harrington. 1934. Competitive efficiency of weeds and cereal crops. CanadianJournal of Research 10:77-93.Pavone, L.V. and R.J. Reader. 1982. The dynamics of seed bank size and seed state of Medicago lupulina. Journalof Ecology. 70: 537-547.Pavone, L.V. and R.J. Reader. 1985. Effect of microtopography on the survival and reproduction of Medicagolupulina. Journal of Ecology; 73: 685-695.Peterson, J.K., M.E. Snook, H.F. Harrison, Jr., and P.F. Mason. 1998. Isolation and structural identification ofsucrose esters from corn spurry (Spergula arvensis); inhibition of seed germination. Journal of ChemicalEcology 24: 1803-1816.Pfauth, M. and M. Sytsma. 2005. Alaska aquatic plant survey report 2005. U.S. Fish and Wildlife ServiceContract number: 7012050114, Center of Lakes and Reservoirs, Portland State University, Portland, OR.Available online http://www. clr.pdx.edu [March 13, 2006].Piggin, C.McE., M.L. Hallett, and D.F. Smith. 1973. The germination response of seed of some annual pastureplants to alternating temperatures. Seed Science and Technology 1: 739-748.Pitcairn, M.F. 2000. Verbascum thapsus L. In: Invasive plants of California’s wildlands. Edited by Bossard, C.C.,J.M. Randall, and M.C. Hoshovsky. University of California Press. p. 321-326.Pitcher, D. and M.J. Russo. 1988. Element stewardship abstract for Carduus pycnocephalus Italian thistle. TheNature Conservancy. Arlington, Virginia. Available: http://tncweeds.ucdavis.edu/esadocs/cardpycn.html [2005, May 2].Plant Conservation Alliance Alien Plant Working Group. On-line document http://www.nps.gov/plants/alien/fact/alpe1.htmPlants for a future. 2002. Achillea ptarmica. Available: http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Achillea+ptarmica&CAN=LATIND [January 20, 2005].Plants For A Future. 2004. Campanula rapunculoides. Available from: http://www.pfaf.org/index.htmlB-166