Nonnative forest insects and pathogens in the United States: Impacts and policy options

Ecological Applications

Volumn 26, Issue 5, 2016, Pages 1437-1455

  Lovett, Gary M ^a   Weiss, Marissa ^b   Liebhold, Andrew M ^c   Holmes, Thomas P ^d   Leung, Brian ^e   Lambert, Kathy Fallon ^b   Orwig, David A ^b   Campbell, Faith T ^f   Rosenthal, Jonathan ^g   McCullough, Deborah G ^h   Wildova, Radka ^g   Ayres, Matthew P ⁱ   Canham, Charles D ^a   Foster, David R ^b   La Deau, Shannon L ^a   Weldy, Troy ^j  

^a CARY INSTITUTE OF ECOSYSTEM STUDIES   (United States)

^b HARVARD UNIVERSITY   (United States)

^c NORTHERN RESEARCH STATION   (United States)

^d USDA FOREST SERVICE   (United States)

^e MCGILL UNIVERSITY   (Canada)

^f Center for Invasive Species Prevention   (United States)

^g Ecological Research Institute   (United States)

^h MICHIGAN STATE UNIVERSITY   (United States)

ⁱ Lamont Doherty Earth Observatory   (United States)

^j THE NATURE CONSERVANCY   (United States)

more..

Author keywords

Disease; Forest; Insect; Invasive; Pathogen; Policy

Indexed keywords

BIOLOGICAL INVASION; COMMUNITY COMPOSITION; COST ANALYSIS; DISEASE PREVALENCE; ECOSYSTEM FUNCTION; FOREST ECOSYSTEM; INSECT; INVASIVE SPECIES; PATHOGEN; PEST SPECIES; POLICY ANALYSIS; STAND STRUCTURE;

MIDWEST; UNITED STATES;

HEXAPODA;

ANIMAL; CLASSIFICATION; ENVIRONMENTAL MONITORING; FOREST; INSECT; INTRODUCED SPECIES; UNITED STATES;

ANIMALS; ENVIRONMENTAL MONITORING; FORESTS; INSECTA; INTRODUCED SPECIES; UNITED STATES;

EID: 85027943231     PISSN: 10510761     EISSN: 19395582     Source Type: Journal    
DOI: 10.1890/15-1176     Document Type: Article

References (115)

1. Albani, M., P. R. Moorcroft, A. M. Ellison, D. A. Orwig, and D. R. Foster. 2010. Predicting the impact of hemlock woolly adelgid on carbon dynamics of eastern United States forests. Canadian Journal of Forest Research 40:119-133.
2. Anagnostakis, S. 2001. The effect of multiple importations of pests and pathogens on a native tree. Biological Invasions 3:245-254.
3. APHIS, 2015a. USDA Animal and Plant Health Inspection Service (APHIS), Washington, DC. https://www.aphis.usda. gov/aphis/ourfocus/planthealth/sa-domestic-pests-and-diseases/sa-pests-and-diseases/sa-plant-disease/sa-ralstonia/. July 9, 2015.
4. APHIS, 2015b. New Pest Advisory Group (NPAG). USDA Animal and Plant Health Inspection Service (APHIS), Washington, DC. https://www.aphis.usda.gov/aphis/ourfocus/planthealth/ppq-program-overview/sa-cphst/ct-new-pest-advisory-group. June 26, 2015.
5. Aukema, J. E., D. G. McCullough, B. Von Holle, A. M. Liebhold, K. Britton, and S. J. Frankel. 2010. Historical accumulation of nonindigenous forest pests in the continental United States. BioScience 60:886-897.
6. Aukema, J. E., et al. 2011. Economic impacts of non-native forest insects in the continental United States. PLoS ONE 9:e24587.
7. Boyd, I. L., P. H. Freer-Smith, C. A. Gilligan, and H. C. J. Godfray. 2013. The consequence of tree pests and diseases for ecosystem services. Science 342:823.
8. Britton, K. O., P. White, A. Kramer, and G. Hudler. 2010. A new approach to stopping the spread of invasive insects and pathogens: early detection and rapid response via a global network of sentinel plantings. New Zealand Journal of Forestry Science 40:109-114.
9. Brockerhoff, E. G., A. M. Liebhold, and H. Jactel. 2006. The ecology of forest insect invasions and advances in their management. Canadian Journal of Forest Research 36:263-268.
10. Brockerhoff, E. G., M. Kimberley, A. M. Liebhold, R. A. Haack, and J. F. Cavey. 2014. Predicting how altering propagule pressure changes establishment rates of biological invaders across species pools. Ecology 95:594-601.
11. Bulman, L. S. 2008. Pest detection surveys on high-risk sites in New Zealand. Australian Forestry 71:242-244.
12. Burgiel, S., G. Foote, M. Orellana, and A. Perrault. 2006. Invasive alien species and trade: integrating prevention measures and international trade rules. Center for International Environmental Law, Washington, DC. http://cleantrade.typepad.com/clean-trade/files/invasives-trade-paper-0106.pdf. Published January 2006.
13. Burns, K. S., A. W. Schoettle, W. R. Jacobi, and M. F. Mahalovich. 2008. Options for the management of white pine blister rust in the Rocky Mountain Region. General Technical Report RMRS-GTR-206, USDA Forest Service, Rocky Mountain Research Station, Fort Collins, Colorado, USA.
14. Burr, S. J., and D. G. McCullough. 2014. Condition of green ash (Fraxinus pennsylvanica) overstory and regeneration at three stages of the emerald ash borer invasion wave. Canadian Journal of Forest Research 44:768-776.
15. Busby, P. E., and C. D. Canham. 2011. An exotic insect and pathogen disease complex reduces aboveground tree biomass in temperate forests of eastern North America. Canadian Journal of Forest Research 41:401-411.
16. Campbell, F. T., and S. E. Schlarbaum. 2014. Fading forests III: American forests: what choices will we make. The Nature Conservancy, Arlington, Virginia, USA. http://www.nature.org/ourinitiatives/habitats/forests/fading-forests-3-completereport.pdf
17. Canada-United States Joint AGM Industry Notice. 2014. http://www.inspection. gc.ca/plants/plant-protection/insects/gypsymoth/industry-notice-2014-02/eng/1396111212197/1396111 213572
18. CBP 2007. Guidelines for Liquidated Damages and Penalties on Wood Packaging Material (WPM). US Customs and Border Protection, Washington, DC. http://www.cbp. gov/sites/default/files/documents/guidelines-wpm-3.pdf
19. Cessna, J. F., and C. Nielsen. 2012. Influences of Hemlock Woolly Adelgid-induced stand-level mortality on nitrogen cycling and stream water nitrogen concentrations in southern Pennsylvania. Castanea 77:127-135.
20. Christenson, L. M., G. M. Lovett, M. J. Mitchell, and P. M. Groffman. 2002. The fate of nitrogen in gypsy moth frass deposited to an oak forest floor. Oecologia 131:444-452.
21. Cobb, R. C., J. A. N. Filipe, R. K. Meentemeyer, C. A. Gilligan, and D. M. Rizzo. 2012. Ecosystem transformation by emerging infectious disease: Loss of large tanoak from California forests. Journal of Ecology 100:712-722.
22. Colautti, R. I., S. A. Bailey, C. D. A. Van Overdijk, K. Amundsen, and H. J. MacIsaac. 2006. Characterised and projected costs of nonindigenous species in Canada. Biological Invasions 8:45-59.
23. Colunga-Garcia, M., R. A. Haack, R. D. Magarey, and D. M. Borchert. 2013. Understanding trade pathways to target biosecurity surveillance. NeoBiota 18:103-118.
24. Council on Climate Preparedness and Resilience. 2014. Priority agenda: enhancing the climate resilience of America's natural resources. Office of the President of the United States, Washington, D. C., USA.
25. Dobbs, C., D. Kendal, and C. R. Nitschke. 2014. Multiple ecosystem services and disservices of the urban forest establishing their connections with landscape structure and sociodemographics. Ecological Indicators 43:44-55.
26. Donovan, G. H., D. T. Butry, Y. L. Michael, J. P. Prestemon, A. M. Liebhold, D. Gatziolis, and M. Y. Mao. 2013. The relationship between trees and human health evidence from the spread of the Emerald Ash Borer. American Journal of Preventive Medicine 44:139-145.
27. Donovan, G. H., Y. L. Michael, D. Gatziolis, J. P. Prestemon, and E. A. Whitsel. 2015. Is tree loss associated with cardiovascular-disease risk in the Women's Health Initiative? A natural experiment. Health and Place 36:1-7.
28. Elliott, K. J., and W. T. Swank. 2008. Long-term changes in forest composition and diversity following early logging (1919-1923) and the decline of American chestnut (Castanea dentata). Plant Ecology 197:155-172.
29. Ellison, A. M., et al. 2005. Loss of foundation species: consequences for the structure and dynamics of forested ecosystems. Frontiers in Ecology and the Environment 3:479-486.
30. Environmental Law Institute. 2002. Halting the invasion: state tools for invasive species management. Environmental Law Institute, Washington, D. C., USA. https://www.eli.org/sites/default/files/eli-pubs/d12-06.pdf
31. Epanchin-Niell, R. S., R. G. Haight, L. Berec, J. M. Kean, and A. M. Liebhold. 2012. Optimal surveillance and eradication of invasive species in heterogeneous landscapes. Ecology Letters 15:803-812.
32. Eschtruth, A. K., N. L. Cleavitt, J. J. Battles, R. A. Evans, and T. J. Fahey. 2006. Vegetation dynamics in declining eastern hemlock stands: 9 years of forest response to hemlock woolly adelgid infestation. Canadian Journal of Forest Research 36:1435-1450.
33. FAO. 2012. Integrated measures for plants for planting. Inter national Standards for Phytosanitary Measures (ISPM) 36. International Plant Protection Convention, FAO, Rome, Italy.
34. Flower, C. E., K. S. Knight, and M. A. Gonzalez-Meler. 2013. Impacts of the emerald ash borer (Agrilus planipennis Fairmaire) induced ash (Fraxinus spp.) mortality on forest carbon cycling and successional dynamics in the eastern United States. Biological Invasions 15:931-944.
35. Flower, C. E., L. C. Long, K. S. Knight, J. Rebbeck, J. S. Brown, M. A. Gonzalez-Meler, and C. J. Whelan. 2014. Native bark-foraging birds preferentially forage in infected ash (Fraxinus spp.) and prove effective predators of the invasive emerald ash borer (Agrilus planipennis Fairmaire). Forest Ecology and Management 313:300-306.
36. Ford, C. R., K. J. Elliott, B. D. Clinton, B. D. Kloeppel, and J. M. Vose. 2012. Forest dynamics following eastern hemlock mortality in the southern Appalachians. Oikos 121:523-536.
37. Forrester, J. A., G. G. McGee, and M. J. Mitchell. 2003. Effects of beech bark disease on aboveground biomass and species composition in a mature northern hardwood forest, 1985 to 2000. Journal of the Torrey Botanical Society 130:70-78.
38. Foster, D. R., and D. A. Orwig. 2006. Preemptive and salvage harvesting of New England forests: when doing nothing is a viable alternative. Conservation Biology 20:959-970.
39. Gandhi, K. J. K., and D. A. Herms. 2010. Direct and indirect effects of alien insect herbivores on ecological processes and interactions in forests of eastern North America. Biological Invasions 12:389-405.
40. Garnas, J. R., M. P. Ayres, A. M. Liebhold, and C. Evans. 2011. Subcontinental impacts of an invasive tree disease on forest structure and dynamics. Journal of Ecology 99:532-541.
41. General-Accounting-Office (GAO). 2006. Invasive forest pests: lessons learned from three recent infestations may aid in managing future efforts. GAO-06-053, U. S. General Accounting Office, Washington, D. C., USA.
42. Van De Gevel, S. L., J. L. Hart, M. D. Spond, P. B. White, M. N. Sutton, and H. D. Grissino-Mayer. 2012. American chestnut (Castanea dentata) to northern red oak (Quercus rubra): forest dynamics of an old-growth forest in the Blue Ridge Mountains, USA. Canadian Journal of Botany 90:1263-1276.
43. Griffin, J. M., G. M. Lovett, M. A. Arthur, and K. C. Weathers. 2003. The distribution and severity of beech bark disease in the Catskill Mountains, NY. Canadian Journal of Forest Research 33:1754-1760.
44. Haack, R. A. 2006. Exotic bark- and wood-boring Coleoptera in the United States: recent establishments and interceptions. Canadian Journal of Forest Research 36:269-288.
45. Haack, R. A., F. Herard, J. H. Sun, and J. J. Turgeon. 2010. Managing invasive populations of Asian Longhorned Beetle and Citrus Longhorned Beetle: a worldwide perspective. Annual Review of Entomology 55:521-546.
46. Haack, R. A., et al. 2014. Effectiveness of the international phytosanitary standard ISPM no. 15 on reducing wood borer infestation rates in wood packaging material entering the United States. PLoS ONE 9:e96611.
47. Herms, D. A., and D. G. McCullough. 2014. Emerald Ash Borer invasion of North America: history, biology, ecology, impacts, and management. Annual Review of Entomology 59:13-30.
48. Hobbs, R. J., and S. E. Humphries. 1995. An integrated approach to the ecology and management of plant invasions. Conservation Biology 9:761-770.
49. Holmes, T. P. 1991. Price and welfare effects of catastrophic forest damage from southern pine beetle epidemics. Forest Science 37:500-516.
50. Holmes, T. P., J. E. Aukema, B. Von Holle, A. Liebhold, and E. Sills. 2009. Economic impacts of invasive species in forests past, present, and future. Year in Ecology and Conservation Biology, Annals of the New York Academy of Sciences 1162:18-38.
51. Holmes, T. P., E. A. Murphy, K. P. Bell, and D. D. Royle. 2010. Property value impacts of Hemlock Woolly Adelgid in residential forests. Forest Science 56:529-540.
52. Holmes, T. P., J. Aukema, J. Englin, R. G. Haight, K. Kovacs, and B. Leung. 2014. Economic analysis of biological invasions in forests pp. 369-386. in S. Kant, and J. R. R. Alavalapati, editors. Handbook of forest resource economics. Routledge, New York, New York, USA.
53. Houston, D. R. 1994. Major new tree disease epidemics: beech bark disease. Annual Review of Phytopathology 32:75-87.
54. IUFRO. 2011. The Montesclaros Declaration. International Union of Forest Research Organizations, Vienna, Austria. http://www.iufro.org/science/divisions/division-7/70000/publications/montesclaros-declaration
55. Jenkins, J. C., J. D. Aber, and C. D. Canham. 1999. Hemlock woolly adelgid impacts on community structure and N cycling rates in eastern hemlock forests. Canadian Journal of Forest Research 29:630-645.
56. Keane, R. E., et al. 2012. A range-wide restoration strategy for whitebark pine (Pinus albicaulis). Gen. Tech. Rep. RMRS-GTR-279, USDA Forest Service, Fort Collins, Colorado, USA.
57. Keller, R. P., and C. Perrings. 2011. International policy options for reducing the environmental impacts of invasive species. BioScience 61:1005-1012.
58. Keller, R. P., and M. R. Springborn. 2014. Closing the screen door to new invasions. Conservation Letters 7:285-292.
59. Kenis, M., W. Rabitsch, M. A. Auger-Rozenberg, and A. Roques. 2007. How can alien species inventories and interception data help us prevent insect invasions? Bulletin of Entomological Research 97:489-502.
60. Koenig, W. D., A. M. Liebhold, D. N. Bonter, W. M. Hochachka, and J. L. Dickinson. 2013. Effects of the emerald ash borer invasion on four species of birds. Biological Invasions 15:2095-2103.
61. Kovacs, K. F., R. G. Haight, D. G. McCullough, R. J. Mercader, N. W. Siegert, and A. M. Liebhold. 2010. Cost of potential emerald ash borer damage in US communities, 2009-2019. Ecological Economics 69:569-578.
62. Kovacs, K. F., R. J. Mercader, R. G. Haight, N. W. Siegert, D. G. McCullough, and A. M. Liebhold. 2011a. The influence of satellite populations of emerald ash borer on projected economic costs in US communities, 2010-2020. Journal of Environmental Management 92:2170-2181.
63. Kovacs, K., T. Vaclavik, R. G. Haight, A. Pang, N. J. Cunniffe, C. A. Gilligan, and R. K. Meentemeyer. 2011b. Predicting the economic costs and property value losses attributed to sudden oak death damage in California (2010-2020). Journal of Environmental Management 92:1292-1302.
64. Kramer, R. A., T. P. Holmes, and M. Haefele. 2003. Contingent valuation of forest ecosystem protection. Pages 303-320 in E. O. Sills, and K. T. Abt, editors. Forests in a market economy. Kluwer, Dordrecht, the Netherlands.
65. Krist, F. J., J. R. Ellenwood, M. E. Woods, A. J. McMahan, J. P. Cowardin, D. E. Ryerson, F. J. Sapio, M. O. Zweifler, and S. A. Romero. 2014. 2013-2027 National Insect and Disease Forest Risk Assessment. FHTET 14-01, USDA Forest Service Forest Health Technology Enterprise Team, Fort Collins, Colorado, USA.
66. Leung, B., M. R. Springborn, J. A. Turner, and E. G. Brockerhoff. 2014. Pathway-level risk analysis: the net present value of an invasive species policy in the US. Frontiers in Ecology and the Environment 12:273-279.
67. Levine, J. M., and C. M. D'Antonio. 2003. Forecasting biological invasions with increasing international trade. Conservation Biology 17:322-326.
68. Liebhold, A. M., W. L. Macdonald, D. Bergdahl, and V. C. Maestro. 1995. Invasion by exotic forest pests: a threat to forest ecosystems. Forest Science 41:1-49.
69. Liebhold, A. M., T. T. Work, D. G. McCullough, and J. F. Cavey. 2006. Airline baggage as a pathway for alien insect species invading the United States. American Entomologist 52:48-54.
70. Liebhold, A. M., E. G. Brockerhoff, L. J. Garrett, J. L. Parke, and K. O. Britton. 2012. Live plant imports: the major pathway for forest insect and pathogen invasions of the US. Frontiers in Ecology and the Environment 10:135-143.
71. Liebhold, A. M., D. G. McCullough, L. M. Blackburn, S. J. Frankel, B. Von Holle, and J. E. Aukema. 2013. A highly aggregated geographical distribution of forest pest invasions in the USA. Diversity and Distributions 19:1208-1216.
72. Liebhold, A. M., et al. 2016. Eradication of invading insect populations: from concepts to applications. Annual Review of Entomology 61:335-352.
73. Lodge, D. M., et al. 2006. Biological invasions: recommendations for US policy and management. Ecological Applications 16:2035-2054.
74. Lovett, G. M., L. M. Christenson, P. M. Groffman, C. G. Jones, J. E. Hart, and M. J. Mitchell. 2002. Insect defoliation and nitrogen cycling in forests. BioScience 52:335-341.
75. Lovett, G. M., C. D. Canham, M. A. Arthur, K. C. Weathers, and R. D. Fitzhugh. 2006. Forest ecosystem responses to exotic pests and pathogens in eastern North America. BioScience 56:395-405.
76. Lovett, G. M., M. A. Arthur, K. C. Weathers, and J. M. Griffin. 2010. Long-term changes in forest carbon and nitrogen cycling caused by an introduced pest/pathogen complex. Ecosystems 13:1188-1200.
77. Lovett, G. M., M. A. Arthur, K. C. Weathers, and J. M. Griffin. 2013. Effects of introduced insects and diseases on forest ecosystems in the Catskill Mountains of New York. Annals of the New York Academy of Sciences 1298:66-77.
78. MacLeod, A., M. Pautasso, M. J. Jeger, and R. Haines-Young. 2010. Evolution of the international regulation of plant pests and challenges for future plant health. Food Security 2:49-70.
79. May, C. 1934. Outbreaks of the Dutch elm disease in the United States. Circular 322, US Department of Agriculture, Washington, D. C., USA.
80. McCullough, D. G., T. T. Work, J. F. Cavey, A. M. Liebhold, and D. Marshall. 2006. Interceptions of nonindigenous plant pests at US ports of entry and border crossings over a 17-year period. Biological Invasions 8:611-630.
81. McKinney, S. T., C. E. Fiedler, and D. F. Tomback. 2009. Invasive pathogen threatens bird-pine mutualism: implications for sustaining a high-elevation ecosystem. Ecological Applications 19:597-607.
82. Metz, M. R., K. M. Frangioso, A. C. Wickland, R. K. Meentemeyer, and D. M. Rizzo. 2012. An emergent disease causes directional changes in forest species composition in coastal California. Ecosphere 3(10):86. http://dx.doi.org/10.1890/ES12-00107.1
83. Monahan, W. B., and W. D. Koenig. 2006. Estimating the potential effects of sudden oak death on oak-dependent birds. Biological Conservation 127:146-157.
84. Moore, C. C., T. P. Holmes, and K. P. Bell. 2011. An attributebased approach to contingent valuation of forest protection programs. Journal of Forest Economics 17:35-52.
85. Morin, R. S., and A. M. Liebhold. 2015. Invasions by two non-native insects alter regional forest species composition and successional trajectories. Forest Ecology and Management 341:67-74.
86. Moser, W. K., et al. 2009. Impacts of nonnative invasive species on US forests and recommendations for policy and management. Journal of Forestry 107:320-327.
87. Myers, J. H., D. Simberloff, A. M. Kuris, and J. R. Carey. 2000. Eradication revisited: dealing with exotic species. Trends in Ecology & Evolution 15:316-320.
88. Myers, S. W., I. Fraser, and V. C. Mastro. 2009. Evaluation of heat treatment schedules for Emerald Ash Borer (Coleoptera: Buprestidae). Journal of Economic Entomology 102:2048-2055.
89. National Academy of Sciences (NAS). 2002. Predicting invasions of nonindigenous plants and plant pests. National Academy Press, Washington, D. C., USA.
90. Nowak, D. J., J. E. Pasek, R. A. Sequeira, D. E. Crane, and V. C. Mastro. 2001. Potential effect of Anoplophora glabripennis (Coleoptera: Cerambycidae) on urban trees in the United States. Journal of Economic Entomology 94:116-122.
91. Nowak, D. J., S. Hirabayashi, A. Bodine, and E. Greenfield. 2014. Tree and forest effects on air quality and human health in the United States. Environmental Pollution 193:119-129.
92. Nuckolls, A. E., N. Wurzburger, C. R. Ford, R. L. Hendrick, J. M. Vose, and B. D. Kloeppel. 2009. Hemlock declines rapidly with Hemlock Woolly Adelgid infestation: impacts on the carbon cycle of southern Appalachian forests. Ecosystems 12:179-190.
93. Orwig, D. A., D. R. Foster, and D. L. Mausel. 2002. Landscape patterns of hemlock decline in New England due to the introduced hemlock woolly adelgid. Journal of Biogeography 29:1475-1487.
94. Orwig, D. A., A. A. B. Plotkin, E. A. Davidson, H. Lux, K. E. Savage, and A. M. Ellison. 2013. Foundation species loss affects vegetation structure more than ecosystem function in a northeastern USA forest. PeerJ 1:e41.
95. Perrings, C., M. Williamson, E. B. Barbier, D. Delfino, S. Dalmazzone, J. Shogren, P. Simmons, and A. Watkinson. 2002. Biological invasion risks and the public good: an economic perspective. Conservation Ecology 6:1.
96. Pimentel, D., L. Lach, R. Zuniga, and D. Morrison. 2000. Environmental and economic costs of nonindigenous species in the United States. BioScience 50:53-65.
97. Poland, T. M., and D. G. McCullough. 2006. Emerald ash borer: invasion of the urban forest and the threat to North America's ash resource. Journal of Forestry 104:118-124.
98. Reaser, J. K., and J. Waugh. 2007. Denying entry: opportunities to build capacity to prevent the introduction of invasive species and improve biosecurity at US ports. IUCN, Gland, Switzerland.
99. Ricciardi, A., W. W. M. Steiner, R. N. Mack, and D. Simberloff. 2000. Toward a global information system for invasive species. BioScience 50:239-244.
100. Rieske, L. K. 2007. Success of an exotic gallmaker, Dryocosmus kuriphilus, on chestnut in the USA: a historical account. EPPO Bulletin 37:172-174.
101. Rodgers, L., A. Derksen, and T. Pernas. 2014. Expansion and impact of laurel wilt in the Florida Everglades. Florida Entomologist 97:1247-1250.
102. Roques, A., W. Rabitsch, J.-Y. Rasplus, C. Lopez-Vaamonde, W. Nentwig, and M. Kenis. 2009. Alien terrestrial invertebrates of Europe. Pages 63-79 in W. Nentwig, P. Hulme, P. Pysek, and M. Vila, editors. Handbook of alien species in Europe. Springer, Dordrecht, the Netherlands.
103. Rosenberger, R. S., M. D. Needham, A. T. Morzillo, and C. Moehrke. 2012. Attitudes, willingness to pay, and stated values for recreation use fees at an urban proximate forest. Journal of Forest Economics 18:271-281.
104. Ross, R. M., R. M. Bennett, C. D. Snyder, J. A. Young, D. R. Smith, and D. P. Lemarie. 2003. Influence of eastern hemlock (Tsuga canadensis L.) on fish community structure and function in headwater streams of the Delaware River basin. Ecology of Freshwater Fish 12:60-65.
105. Roy, B. A., H. M. Alexander, J. Davidson, F. T. Campbell, J. J. Burdon, R. Sniezko, and C. Brasier. 2014. Increasing forest loss worldwide from invasive pests requires new trade regulations. Frontiers in Ecology and the Environment 12:457-465.
106. Siderhurst, L. A., H. P. Griscom, M. Hudy, and Z. J. Bortolot. 2010. Changes in light levels and stream temperatures with loss of eastern hemlock (Tsuga canadensis) at a southern Appalachian stream: implications for brook trout. Forest Ecology and Management 260:1677-1688.
107. Simberloff, D., I. M. Parker, and P. N. Windle. 2005. Introduced species policy, management, and future research needs. Frontiers in Ecology and the Environment 3:12-20.
108. Smith, R. M., R. H. A. Baker, C. P. Malumphy, S. Hockland, R. P. Hammon, J. C. Ostoja-Starzewski, and D. W. Collins. 2007. Recent non-native invertebrate plant pest establishments in Great Britain: origins, pathways, and trends. Agricultural and Forest Entomology 9:307-326.
109. Snyder, C. D., J. A. Young, D. P. Lemarie, and D. R. Smith. 2002. Influence of eastern hemlock (Tsuga canadensis) forests on aquatic invertebrate assemblages in headwater streams. Canadian Journal of Fisheries and Aquatic Sciences 59:262-275.
110. Stadler, B., T. Muller, and D. Orwig. 2006. The ecology of energy and nutrient fluxes in hemlock forests invaded by hemlock woolly adelgid. Ecology 87:1792-1804.
111. Tingley, M. W., D. A. Orwig, and R. Field. 2002. Avian response to removal of a forest dominant: consequences of hemlock woolly adelgid infestations. Journal of Biogeography 29:1505-1516.
112. USDA-APHIS. 2011. New pest response guidelines: exotic wood-boring and bark beetles. USDA-APHIS-PPQ-EDP-Emergency Management, Riverdale, Maryland, USA.
113. Weed, A. S., M. P. Ayres, and J. A. Hicke. 2013. Consequences of climate change for biotic disturbances in North American forests. Ecological Monographs 83:441-470.
114. Willacker, J. J., W. V. Sobczak, and E. A. Colburn. 2009. Stream macroinvertebrate communities in paired hemlock and deciduous watersheds. Northeastern Naturalist 16:101-112.
115. Zahid, M. I., C. A. Grgurinovic, and D. J. Walsh. 2008. Quarantine risks associated with solid wood packaging materials receiving ISPM 15 treatments. Australian Forestry 71:287-293.