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Weed Control for the Preservation of Biological Diversity

Published online by Cambridge University Press:  12 June 2017

John M. Randall
John M. Randall*
Affiliation:
The Nature Conservancy, Wildland Weeds Management & Res., Section of Plant Biology, Univ. of California, Davis, CA 95616
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Abstract

Invasions by non-native plants threaten the preservation of many plant and animal species and communities throughout North America. These pest species compete with and displace native plants and animals and may substantially alter ecosystem functions (e.g., fire occurrence and frequency, nutrient cycling). Awareness of these threats among wildland managers has greatly increased in the last decade. In a recent poll of National Park superintendents, 61% of 246 respondents indicated non-native plant invasions were moderate or major problems at their parks. Likewise, over 60% of Nature Conservancy stewards nationwide polled in 1992 indicated weeds were among their top 10 management problems, listing nearly 200 problem species. Over 12% indicated weeds were their worst problem. Weed control programs are now in place in wildlands across the continent, employing techniques ranging from manual removal, mechanical methods, prescribed fire, judicious use of herbicides, the release of biological control agents, and encouragement of native competitors. The most successful endeavors follow an adaptive management strategy in which plans based on the goals of the preserve are developed, weeds that interfere with those goals are identified and prioritized, and control measures are selected and implemented where appropriate. Emphasis is placed on preventing new weeds from becoming established and on early detection and elimination of incipient infestations. Managers must focus on the vegetation or community desired in place of the weeds and periodically re-evaluate whether their programs are moving them toward this objective. Control of weeds in wildlands poses unusual problems not ordinarily met in other systems which offer challenging research opportunities for weed scientists and ecologists.

Keywords

Biological diversityconservation biologyexotic speciesnon-native species
Type
Symposium
Information
Weed Technology , Volume 10 , Issue 2 , June 1996 , pp. 370 - 383
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

Literature Cited

1. Ambrose, J. D., 1987. Status report on red mulberry, Morus rubra, in Canada. Secretariat, Committee on the Status of Endangered Wildlife of Canada. Environment Canada. Ottawa, ON.Google Scholar
2. Anderson, R. C., 1990. The historic role of fire in the North American grassland. p. 8–18 in Collins, S. L. and Wallace, L. L., eds. Fire in North American Tallgrass prairies. Univ. of Oklahoma Press, Norman, OK.Google Scholar
3. Anderson, S. J., Stone, C. P., and Higashino, P. K. 1992. Distribution and spread of alien plants in Kipahulu Valley, Haleakala National Park above 2,300 ft elevation. p. 300–337 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
4. Andrascik, R. J., 1994. Process for developing a leafy spurge strategic management plan within Theodore Roosevelt National Park. Leafy Spurge News 16(3):5.Google Scholar
5. Andreas, B. K., and Cooperrider, T. S. 1978. The Apocynaceae of Ohio. Castanea 43–44:238.Google Scholar
6. Apfelbaum, S. I., and Sams, C. E. 1987. Ecology and control of reed canary grass (Phalaris arundinacea L.). Nat. Areas J. 7:69–74.Google Scholar
7. Aplet, G. H., 1990. Alteration of earthworm community biomass by the alien Myrica faya in Hawaii. Oecologia 82:414–416.Google Scholar
8. Barbour, M., DeJong, T. M., and Johnson, A. F. 1976. Synecology of beach vegetation along the Pacific Coast of the United States of America: a first approximation. J. Biogeog. 3:55–69.Google Scholar
9. Barbour, M., and Johnson, A. F. 1988. Beach and dune. p. 223–261 in Barbour, M., and Major, J., eds. Terrestrial Vegetation of California, new expanded ed. Cali. Native Plant Soc. Spec. Publ. No. 9.Google Scholar
10. Barrows, C. W., 1993. Tamarisk control II. a success story. Restoration Manage Notes 11(1):35–38.Google Scholar
11. Belcher, J. W., and Wilson, S. D. 1989. Leafy spurge and the species composition of a mixed grass prairie. J. Range Manage. 42:172–175.Google Scholar
12. Blackburn, W., Knight, R. W., and Schuster, J. L. 1982. Saltcedar influence on sedimentation in the Brazos River. J. Soil Water Cons. 37:298–301.Google Scholar
13. Bossard, C. C., 1991. The role of habitat disturbance, seed predation and ant dispersal on establishment of the exotic shrub Cytisus scoparius in California. Am. Midl. Nat. 126:1–13.Google Scholar
14. Breternitz, D. A., Robinson, C. K., and Gross, G. T. 1986. Dolores archaeological program: Final synthetic report. U.S. Dep. of the Interior, Bur. of Reclamation, Denver.Google Scholar
15. Bright, C., 1995. Bio-invasions: the spread of exotic species. Worldwatch July/August. p. 10–19.Google Scholar
16. Brotherson, J. D., and Field, D. 1987. Tamarix: impacts of a successful weed. Rangelands 9:110–112.Google Scholar
17. Cameron, G. N., and Spencer, S. R. 1989. Rapid leaf decay and nutrient release in a Chinese tallow forest. Oecologia 80:222–228.CrossRefGoogle Scholar
18. Cavers, P. B., Heagy, M. I., and Kokron, R. F. 1979. The biology of Canadian weeds. 35. Alliaria petiolata (M. Bieb.) Cavara & Grande. Can. J. Plant Sci. 59:217–229.Google Scholar
19. Cheater, M., 1992. Alien invasion. Nature Conservancy. 42(5):24–29.Google Scholar
20. Clary, M., 1993. Exotic plants, animals imperil U.S. ecosystems. Los Angeles Times Dec. 5, 1993 A1, A14, A17.Google Scholar
21. Cole, M.A.R., 1991. Vegetation management guideline: white and yellow sweet clover [Melilotus alba (Desr.) and M. officinalis (L.) Lam.]. Nat. Areas J. 11:214–215.Google Scholar
22. Cronk, Q.C.B., and Fuller, J. L. 1995. Plant Invaders: The Threat to Natural Ecosystems. Chapman & Hall, London.Google Scholar
23. D'Antonio, C. M., and Vitousek, P. M. 1992. Biological invasions by exotic grasses, the grass/fire cycle and global change. Ann. Rev. Ecol. Syst. 23:63–87.Google Scholar
24. Darwin, C., 1839 [1989 reprint]. The Voyage of the Beagle. Edited with an introduction by Browne, J. and Neve, M. Penguin Books, London.Google Scholar
25. Deaton, A., 1994. Shoreline monitoring at Long Key. Resour. Manage. Notes 6(4):13–14.Google Scholar
26. Devine, R., 1993. The Cheatgrass problem. Atlantic Mo. 271(5):40–48.Google Scholar
27. Devine, R., 1994. Botanical barbarians. Sierra 79(1):50–57, 71.Google Scholar
28. Drake, J. A., Mooney, H. A., di Castri, F., Groves, R. H., and Kruger, F. J., eds. 1989. SCOPE 37 Biological Invasions: A Global Perspective. Wiley, Chichester.Google Scholar
29. Duffey, E., ed. 1988. Special issue: biological invasions of nature reserves. Biol. Cons. 44(1&2):1–135.Google Scholar
30. Elliott, W., 1994. German ivy engulfing riparian forests and heading for the uplands. CalEPPC News 2:9.Google Scholar
31. Elton, C. S., 1958. The Ecology of Invasions by Plants and Animals. Methuen and Co., Ltd., London.Google Scholar
32. Ernst, E. F., 1949. Vanishing meadows in Yosemite Valley. Yosemite Nat. Notes 28:34–40.Google Scholar
33. Evans, J. E., 1984. Japanese honeysuckle (Lonicera japonica): a literature review of management practices. Nat. Areas J. 4(2):4–10.Google Scholar
34. Flowers, J. D., II., 1991. Subtropical fire suppression in Melaleuca quin quenervia . p. 151–158 in Center, T. D., Doren, R. F., Hofstetter, R. L., Myers, R. L. and Whiteaker, L. D., eds. Proc. of the Symp. on Exotic Pest Plants, Miami 1988. USDI Nat. Park Serv. Tech. Rep. NPS/NREVER/NRTR-91/06.Google Scholar
35. Forseth, I. N. and Teramura, A. H. 1986. Kudzu leaf energy budget and calculated transpiration: the influence of leaflet orientation. Ecologia 67:564–571.CrossRefGoogle Scholar
36. Forseth, I. N., and Teramura, A. H. 1987. Field photosynthesis, microclimate and water relations of an exotic temperate liana, Pueraria lobata, kudzu. Oecologia 71:262–267.Google Scholar
37. Grant, S., 1993. Stowaway species taking their toll on life, property. Hartford (CT) Courant CLV (150):A1, A4.Google Scholar
38. Grant, S., 1993. Not all the pests come uninvited. Hartford (CT) Courant CLV (151):A1, A6.Google Scholar
39. Greene, L. W. 1987. Yosemite: the Park and its resources; a historic resource study of the discovery, management and physical development of Yosemite National Park California. U.S. Dep. of the Int., Nat. Park Serv. Google Scholar
40. Griffin, G. F., Stafford Smith, D. M., Morton, S. R., Allen, G. E., and Masters, K. A. 1989 Status and implications of the invasion of tamarisk (Tamarix aphylla) on the Finke River, Northern Territory, Australia. J. Environ. Manage. 29:297–315.Google Scholar
41. Groves, R. H., 1991. Status of environmental weed control in Australia. Plant Prot. Q. 6:95–98.Google Scholar
42. Groves, R. H., and Burdon, J. J., eds. 1986. Ecology of biological invasions. Cambridge University Press, Cambridge. 166 p.Google Scholar
43. Halvorson, W. L. 1992. Alien plants at Channel Islands National Park. p. 64–96 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
44. Harrington, R. A., Brown, B. J., Reich, P. B., and Fownes, J. H. 1989 Ecophysiology of exotic and native shrubs in Southern Wisconsin II. annual growth and carbon gain. Oecologia 80:368–373.Google Scholar
45. Heady, H. F., and Zinke, P. J. 1978. Vegetational changes in Yosemite Valley. Nat. Park Serv. Occas. Pap. No. 5. 25 p.Google Scholar
46. Heidorn, R., 1991. Vegetation management guideline: exotic buckthorns common buckthorn (Rhamnus cathartics L.), glossy buckthorn (R. frangula L.) and Dahurian buckthorn (R. davurica Pall.). Nat. Areas J. 11:216–217.Google Scholar
47. Herbold, B., and Moyle, P. B. 1986. Introduced species and vacant niches. Am. Nat. 128:751–760.Google Scholar
48. Hiebert, R. D., and Stubbendieck, J. 1993. Handbook for ranking exotic plants for management and control. Natural Resources Report NPS/NRMWRO/NRR-93/08. Nat. Park Serv., Nat. Res. Publ. Office, Denver.Google Scholar
49. Holloway, J. K., and Huffaker, C. B. 1951. The role of Chrysolina gemellata in the biological control of Klamath weed. J. Econ. Entomol. 44:244–247.Google Scholar
50. Horton, J. S. 1977. The development and perpetuation of the permanent tamarisk type in the phreatophyte zone of the Southwest. p. 124–127 in Johnson, R. R. and Jones, D. A., eds. Importance, preservation and management of riparian habitat: a symposium. Tech. Rep. RM-43 U.S. For. Serv., Fort Collins, CO.Google Scholar
51. Huffaker, C. B. and Kennett, C. E. 1959. A ten-year study of vegetational changes associated with control of Klamath weed. J. Range Manage. 12:69–82.Google Scholar
52. Hughes, C. E., and Styles, B. T. 1987. The benefits and potential risks of woody legume introductions. Int. Tree Crops J. 4:209–248.Google Scholar
53. Humphries, S. E., Groves, R. H., and Mitchell, D. S., eds. 1991. Plant Invasions: The Incidence of Environmental Weeds in Australia. Kowari 2. Aust. Nat. Parks Wildlife Service, Canberra.Google Scholar
54. Huston, M. A., 1994. Biological Diversity: The Coexistence of Species on Changing Landscapes. Cambridge Univ. Press. Cambridge.Google Scholar
55. Ingold, J. L., and Craycraft, M. J. 1983. Avian frugivory on honeysuckle (Lonicera) in southwestern Ohio in Fall. Ohio Acad. Sci. 83:256–258.Google Scholar
56. Johnson, A., 1994. Australian pine invasion on Florida's coast. Resource Management Notes (Florida Department of Conservation) 6:15.Google Scholar
57. Jubinsky, G., 1993. Chinese tallow gets worse! Palmetto. Fall 1993:3–4.Google Scholar
58. Jubinsky, G., 1993. A review of the literature: Sapium sebiferum . Florida Dep. Nat. Resour. Bur. of Aquatic Plant Manage. Tech. Serv. Sect. publ. TSS 93–03. 12 p.Google Scholar
59. Lacey, J. R., Marlow, C. B., and Lane, J. R. 1989. Influence of spotted knapweed (Centaurea maculosa) on surface runoff and sediment yield. Weed Technol. 3:627–631.Google Scholar
60. Langdon, K. R., and Johnson, K. D. 1992. Alien forest insects and diseases in Eastern USNPS Units: impacts and interventions. George Wright Forum 9:2–14.Google Scholar
61. LaRoche, F. B., ed. 1994. Melaleuca management plan for Florida: recommendations from the Melaleuca Task Force, second edition. Exotic Pest Plant Council, West Palm Beach, Florida.Google Scholar
62. LaRosa, A. M., Doren, R. F., and Gunderson, L. 1992. Alien plant management in Everglades National Park: an historical perspective. p. 47–63 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
63. Layden, P. C., and Manfredo, M. J. 1994. National Park conditions: a survey of park superintendents. Nat. Parks and Conservation Assoc., Washington, DC.Google Scholar
64. Loope, L. L., 1992. An overview of problems with introduced plant species in national parks and biosphere reserves of the United States. p. 1–28 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
65. Loope, L. L., Nagata, R. J., and Madeiros, A. C. 1992. Alien plants in Haleakala National Park. p. 551–576 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
66. Luken, J. O., and Goessling, N. 1994. Seedling distribution and the potential persistence of the exotic shrub Lonicera maackii in fragmented forests. Am. Midl. Nat. 133:124–130.Google Scholar
67. Luken, J. O., and Mattimiro, D. T. 1991. Habitat-specific resilience of the invasive shrub Amur honeysuckle (Lonicera maackii) during repeated clipping. Ecol. Appl. 1:104–109.Google Scholar
68. MacDonald, I.A.W., Kruger, F. J., and Ferrar, A. A. 1986. The ecology and management of biological invasions in Southern Africa. Proc. of the National Synthetic Symp. on the Ecology of Biological Invasions. Oxford University Press, Capetown.Google Scholar
69. Mack, R. N., 1981. Invasion of Bromus tectorum L. into western North America: an ecological chronicle. Agroecosystems 7:145–165.Google Scholar
70. Maddox, D. M., Mayfield, A., and Poritz, N. H. 1985. Distribution of yellow starthistle (Centaurea solstitialis) and Russian knapweed (Centaurea repens). Weed Sci. 33:315–327.Google Scholar
71. Malecki, R. A., Blossey, B., Highl, S. D., Schroeder, D., Kok, L. T., and Coulson, J. R. 1993. Biological control of purple loosestrife. BioScience 43:680–686.Google Scholar
72. Marks, M., Lapin, E., and Randall, J. M. 1994. Phragmites australis (P. communis) threats, management and monitoring. Nat. Areas J. 14:285–294.Google Scholar
73. McEvoy, P. B., 1985. Depression in ragwort (Senecio jacobaea) abundance following introduction of Tyria jacobaea and Longitarsus jacobaeae on the central coast of Oregon. p. 57–64 in Delfosse, E. S., ed. Proc. of the VI Int. Symp. on Biological Control of Weeds, 19–25 08, 1984. Vancouver, Canada. Agriculture Canada, Ottawa.Google Scholar
74. McEvoy, P. B., Cox, C. S., and Coombs, E. 1991. Successful biological control of ragwort Senecio jacobaea. by introduced insects in Oregon. Ecol. Appl. 1:430–442.Google Scholar
75. McEvoy, P. B., Cox, C. S., James, R. R., and Rudd, N. T. 1990. Ecological mechanisms underlying successful biological control: field experiments with ragwort, Senecio jacobaea . p. 55–66 in Delfosse, E. S., ed. Proc. of the VII Int. Symp. on Biological Control of Weeds. 6–11 March, 1988, Rome, Italy. Ministero dell'Agricoltura e delle Foreste, Rome/CSIRO, Melbourne, Australia.Google Scholar
76. McEvoy, P. B., and Rudd, N. T. 1993. Effects of vegetation disturbances on insect biological control of tansy ragwort, Senecio jacobaea . Ecol. Appl. 3:682–698.Google Scholar
77. McEvoy, P. B., Rudd, N. T., Cox, C. S., and Huso, M. 1993. Disturbance, competition and herbivory effects on ragwort, Senecio jacobaea. populations. Ecol. Monogr. 63:55–75.Google Scholar
78. McKnight, B. N., ed. 1993. Biological Pollution: the Control and Impact of Invasive Exotic Species. Ind. Acad. of Sci., Indianapolis. 261 p.Google Scholar
79. Miller, R. H., and Cameron, G. N. 1983. Intraspecific variation of life history parameters in the terrestrial isopod Armadillium vulgare . Oecologia 57:216–226.Google Scholar
80. Moody, M. E., and Mack, R. N. 1988. Controlling the spread of plant invasions: the importance of nascent foci. J. Appl. Ecol. 25:1009–1021.CrossRefGoogle Scholar
81. Mooney, H. A., and Drake, J. A., eds. 1986. Ecology of Biological Invasions of North America and Hawaii. Springer-Verlag, New York. 321 p.Google Scholar
82. Mountjoy, J. H., 1979. Broom—a threat to native plants. Fremontia 6(4):11–15.Google Scholar
83. National Academy of Sciences. 1975. Forest pest control. Washington, DC.Google Scholar
84. National Park Service. 1976. Yosemite resources management plan final draft. 10 13, 1976. Yosemite National Park Research Library.Google Scholar
85. National Public Radio. 1993. Segment #4 Alien species threaten native wildlife, All Things Considered Broadcast, 08 9 1993.Google Scholar
86. Natural Areas Association. 1992. Compendium on Exotic Species: Articles 1–43. Natural Areas Association, Mukwanago, WI.Google Scholar
87. Neill, W., 1983. The tamarisk invasion of desert riparian areas. Educ. Bull. #83–84. Publ. of the Educ. Foundation of the Desert Protective Council. Spring Valley, CA. 4 p.Google Scholar
88. Niering, W. A., and Warren, R. S. 1977. Our dynamic tidal marshes: vegetation changes as revealed by peat analysis. Conn. Arboretum Bull. 12. 22 p.Google Scholar
89. Nuzzo, V. A., 1991. Experimental control of garlic mustard (Alliaria petiolata [Bieb.] Cavara & Grande) in northern Illinois using fire, herbicide and pulling. Nat. Areas J. 11:158–167.Google Scholar
90. Nuzzo, V. A., 1992. Garlic mustard (Alliaria petiolata [Bieb.] Cavara and Grande) rate of spread and potential impact on groundlayer species. Report to the Illinois Department of Conservation. Native Landscapes. 17 p.Google Scholar
91. Nuzzo, V. A., 1993. Distribution and spread of the invasive biennial Alliaria petiolata (garlic mustard) in North America. p. 137–145 in McKnight, B. N., ed. Biological Pollution: the Control and Impact of Invasive Exotic Species. Ind. Acad. of Sci., Indianapolis.Google Scholar
92. Nyboer, R., 1992. Vegetation management guideline: bush honeysuckles— Tatartian, Morrow's, Belle and Amur honeysuckle (Lonicera tatarica L., L. morrowii Gray, L. x bella Zabel, and L. maackii [Rupr.] Maxim.). Nat. Areas J. 12:218–219.Google Scholar
93. Office of Technology Assessment, U.S. Congress. 1993. Harmful non-indigenous species in the United States, OTA-F-565. U.S. Government Printing Office, Washington, D.C. Google Scholar
94. Olmstead, F. L., 1865. Preliminary report upon the Yosemite and Big Tree Grove. p. 488–516 in Ranney, V. P., ed. 1990. The Papers of Frederick Law Olmstead V The California Frontier 1863–1865. Johns Hopkins Univ. Press. Baltimore.Google Scholar
95. Palmer, T. S., 1898. The danger of introducing noxious animals and birds. p. 87–110 in Yearbook of the Department of Agriculture. U.S. Dep. of Agric., Washington, DC.Google Scholar
96. Pavegliot, F. L., Kilbride, K. M., and Grue, C. E. n.d. Fate of Rodeo and X-77 spreader associated with control of smooth cordgrass (Spartina alterniflora) in an estuary from southwestern Washington. Workshop on Spartina alterniflora. Seattle.Google Scholar
97. Pimm, S. L., and Gilpin, M. E. 1989. Theoretical issues in conservation biology. p. 287–305 in Roughgarden, J., May, R. M., and Levin, S. A., eds. Perspectives in Ecological Theory. Princeton Univ. Press, Princeton, NJ.Google Scholar
98. Prather, T. S., and Callihan, R. H. 1991, Interactions between a yellow starthistle community and a pubescent wheat grass community. J. Range Manage. 44:443–447.Google Scholar
99. Pysek, P., Prach, K., Rejmánek, M., and Wade, M., eds. 1995. Plant Invasions: General Aspects and Special Problems. SPB Academic Publishing, Amsterdam. 263 p.Google Scholar
100. Randall, J. M., 1991. The ecology of an invasive thistle, Cirsium vulgare, in California. , Univ. of California, Davis. 187 p.Google Scholar
101. Randall, J. M., 1994. What's in a name? CalEPPC News 2(2):3.Google Scholar
102. Randall, J. M., 1995. Assessment of the invasive weed problem on preserves across the United States. Endangered Species Update 12(4&5):4–6.Google Scholar
103. Redford, K.H., 1994. Science and The Nature Conservancy. Nature Conservancy 44(1):15.Google Scholar
104. Reichard, S., 1995. Assessing the potential of invasiveness in woody plants introduced in North America. . Univ. of Washington, Seattle, WA.Google Scholar
105. Rejmánek, M., 1995. What makes a species invasive? p. 3–13 in Pysek, P., Prach, K., Rejmánek, M. and Wade, P. M., eds. Plant Invasions. SPB Academic Publishing, The Hague, The Netherlands.Google Scholar
106. Rejmánek, M., and Richardson, D. M. (In press). What attributes make some plant species more invasive? Ecology.Google Scholar
107. Rice, P. M., Bedunah, D. J., and Carlson, C. E. 1992. Plant community diversity after herbicide control of spotted knapweed. USDA For. Serv. Intermountain Res. Stn. Res. Pap. N460:1+.Google Scholar
108. Richardson, D. M., Cowling, R. M., and Le Maitre, D. C. 1990. Assessing the risk of invasive species in Pinus and Banksia in South African fynbos. J. Vegetation Sci. 1:629–642.Google Scholar
109. Richardson, D. R., 1977. Vegetation of the Atlantic Coastal Ridge of Palm Beach County, Florida. Florida Sci. 40:281–330.Google Scholar
110. Richter, K. O., 1994. Exotic weeds: biological pollutants. Northwest Parks & Wildlife 4(7):76–82.Google Scholar
111. Sallabanks, R., 1993. Fruiting plant attractiveness to avian seed dispersers: native vs. invasive Crataegus in western Oregon. Madrono 40:108–116.Google Scholar
112. Sayce, K., 1990. Species displacement by Spartina in the Pacific Northwest. p. 26–27 in Mumford, T. F. Jr., Peyton, P., Sayce, J. R., and Harbell, S., eds., Spartina workshop record. Seattle, Nov. 14–15, 1990.Google Scholar
113. Schmitz, D. C., 1995. Diversity disappears in Florida: our native species are being pushed out by foreign invaders. Newsweek CXXV(11):14.Google Scholar
114. Schneider, D., 1994. Slow motion explosion: the exponential spread of exotic species. Whole Earth Review Summer 1994:101–105.Google Scholar
115. Schwartz, M. W., and Randall, J. M. 1995. Valuing natural areas and controlling nonindigenous plants. Nat. Areas J. 15:98–100.Google Scholar
116. Smith, C. W., and Tunison, J. T. 1992. Fire and alien plants in Hawai'i: research and management implications for native ecosystems. p. 394–408 in Stone, P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
117. Solecki, M. K., and Taft, J. 1987. Control of cypress spurge, live-forever, and periwinkle in a Tallgrass prairie remnant. Restoration and Manage. Notes 5:27.Google Scholar
118. Stone, C. P., 1985. Alien animals in Hawaii's native ecosystems: toward controlling the adverse effects of introduced vertebrates. p. 251–297 in Stone, C. P. and Scott, J. M., eds. Hawai'i's Terrestrial Ecosystems: Preservation and Management. Coop. Nat. Park Resources Studies Unit, Univ. of Hawaii, Honolulu.Google Scholar
119. Stone, C. P., Smith, C. W., and Tunison, J. T., eds. 1992. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu. 887 p.Google Scholar
120. Stuckey, R. L., 1980. Distributional history of Lythrum salicaria (purple loosestrife) in North America. Bartonia 47:3–20.Google Scholar
121. Thomas, L. K. Jr., 1980. The impact of three exotic plant species on a Potomac Island. U.S. National Park Service. Sci. Monogr. Ser., No. 13. 179 p.Google Scholar
122. Thomas, L. K. Jr., 1980. Winter growth of Japanese honeysuckle (Lonicera japonica Thunb.) on Theodore Roosevelt Island, District of Columbia in Proc. 2nd Conf. on Sci. Res. in the National Parks. 8:408–418.Google Scholar
123. Thompson, D. Q., Stuckey, R. L., and Thompson, E. B. 1987. Spread, impact and control of purple loosestrife (Lythrum salicaria) in North American wetlands. U.S. Fish and Wildlife Serv. Res. Rep. 2.Google Scholar
124. Thomsen, C. D., Williams, W. A., Vayssieres, M., Bell, F. L., and George, M. R. 1993. Controlled grazing on annual grassland decreases yellow starthistle. California Agric. 47(6):36–40.Google Scholar
125. Tunison, J. T., 1992. Fountain grass control in Hawaii Volcanoes National Park: Management considerations and strategies. p. 376–393 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
126. Tunison, J. T., 1992. Alien plant control strategies in Hawaii Volcanoes National Park. p. 485–505 in Stone, C. P., Smith, C. W., and Tunison, J. T., eds. Alien Plant Invasions in Native Ecosystems of Hawaii: Management and Research. Univ. of Hawaii Coop. Park Studies Unit, Honolulu.Google Scholar
127. U.S. Dep. of Agriculture, Forest Service. 1986. Intermountain region noxious weed and poisonous plant control program: final environmental impact statement. Foss, J. L., EIS Team Leader. USDA For. Serv., Intermountain Region, Ogden UT.Google Scholar
128. U.S. Dep. of Interior, Bureau of Land Management. 1991. Final environmental impact statement, vegetation treatment on BLM lands in thirteen western states. Melton, J., Team Leader. BLM-WY-ES-91-022-4320. BLM State Office, Casper, WY.Google Scholar
129. U.S. Dep. of Interior, Bureau of Land Management. 1995. Partners Against Weeds—an action plan for the Bureau of Land Management Fiscal Year 1995 and beyond. BLM State Office, Billings, MT.Google Scholar
130. van Riper, S. G., and van Riper, C. III,. 1985. A summary of known parasites and diseases recorded from the avifauna of the Hawaiian Islands. p. 298–371 in Stone, C. P. and Scott, J. M., eds. Hawai'i's Terrestrial Ecosystems: Preservation and Management. Coop. Nat. Park Resour. Studies Unit, Univ. of Hawaii, Honolulu.Google Scholar
131. Vitousek, P. M., 1986. Biological invasions and ecosystem properties: can species make a difference? p. 163–176 in Mooney, H. A. and Drake, J. A., eds. Ecology of Biological Invasions of North America and Hawaii. Springer-Verlag, New York.Google Scholar
132. Vitousek, P. M., Loope, L. L., and D'Antonio, C. 1995. Biological invasion as a global change. p. 216–227 in Hassol, S. J. and Katzenberger, J., eds. Elements of Change 1994. Aspen Global Change Institute, Aspen, Colorado.Google Scholar
133. Vitousek, P. M. and Walker, L. R. 1989. Biological invasion by Myrica faya in Hawaii: plant demography, nitrogen fixation, ecosystem effects. Ecol. Monogr. 59:247–265.Google Scholar
134. Vitousek, P. M., Walker, L. R., Whiteaker, L. D., Mueller-Dumbois, D., and Matson, P. A. 1987. Biological invasion by Myrica faya alters ecosystem development in Hawaii. Science 238:802–804.Google Scholar
135. Webb, S. L., and Kaunzinger, C. K. 1993. Biological invasion of the Drew University (New Jersey) forest preserve by the Norway maple (Acer platanoides L.). Bull. Torrey Bot. Club 120:343–349.Google Scholar
136. Whelan, C. J., and Dilger, M. L. 1992. Invasive, exotic shrubs: a paradox for natural area managers? Nat. Areas J. 12:109–110.Google Scholar
137. Whisenant, S. G., 1990. Changing fire frequencies on Idaho's Snake River Plains: ecological and management implications. p. 4–10 in McArthur, B. D., Romney, E. V., Smith, S. D., and Tueller, P. T., eds. Proceedings—Symposium on cheatgrass invasion, shrub die-off, and other aspects of shrub biology and management. Las Vegas, NV, 1989. USDA For. Serv. Intermountain Res. Stn. Gen. Tech. Rep., INT-276.Google Scholar
138. Williams, C. E., Ralley, J. J., and Taylor, D. H. 1992. Consumption of seeds of the invasive Amur honeysuckle Lonicera maackii (Rupr.) Maxim., by small mammals. Nat. Areas J. 12:86–89.Google Scholar
139. Williams, T., 1994. Invasion of the aliens. Audubon September-October 1994:24–32.Google Scholar
140. Wilson, E. O., 1988. The current state of biological diversity. p. 3–18 in Wilson, E. O. and Peter, F. M., eds. Biodiversity. National Academy Press, Washington, DC.Google Scholar
141. Zamora, D. L., Thill, D. C., and Eplee, R. E. 1989. An eradication plan for plant invasions. Weed Technol. 3:2–12.Google Scholar