Bailey, R. G. (1995). Descriptions of the ecoregions of the Unites States. 2d ed. Rev. and expanded (1st ed. 1990). Misc. Publ. No. 1391 (rev.), Washington, DC: USDA Forest Service. 108 p. with separate map at 1:7500000.
Bechtold, W. A., & Patterson, P. L. (Eds.). (2005). The enhanced Forest Inventory and Analysis Program—national sampling design and estimation procedures. Gen. Tech. Rep. SRS-80 (p. 85). Ashville: U.S. Department of Agriculture, Forest Service, Southern Research Station.
Brothers, T. S., & Spingarn, A. (1992). Forest fragmentation and alien plant invasion of central Indiana old-growth forests. Conservation Biology, 6
Chen, H., Qian, H., Spyreas, G., & Crossland, M. (2010). BIODIVERSITY RESEARCH: Native-exotic species richness relationships across spatial scales and biotic homogenization in wetland plant communities of Illinois, USA. Diversity and Distributions, 16
Chytrý, M., Maskell, L. C., Pino, J., Pyšek, P., Vilà, M., Font, X., & Smart, S. M. (2008). Habitat invasions by alien plants: a quantitative comparison among Mediterranean, subcontinental and oceanic regions of Europe. Journal of Applied Ecology, 45
Cleland, D. T., Freeouf, J. A., Keys, J. E., Nowacki, G. J., Carpenter, C. A., & McNab, W. H. (2005). Ecological subregions; sections and subsections for the conterminous United States. [Map on CD-ROM [1:3,500,000]]. (A.M. Sloan, cartographer). Washington: U.S. Department of Agriculture, Forest Service.
Crooks, J. A. (2005). Lag times and exotic species: the ecology and management of biological invasions in slow-motion. Ecoscience, 12
DeGasperis, B. G., & Motzkin, G. (2007). Windows of opportunity: historical and ecological controls on Berberis thunbergii
invasions. Ecology, 88
Delivering Alien Invasive Species Inventories for Europe (DAISIE). Available at http://www.europe-aliens.org/default.do
. Accessed 10 July 2012.
Dengler, J., Jansen, F., Glöckler, F., Peet, R. K., De Cáceres, M., Chytrý, M., Ewald, J., Oldeland, J., Lopez-Gonzalez, G., Finckh, M., Mucina, L., Rodwell, J. S., Schaminée, J. H. J., & Spencer, N. (2011). The Global Index of Vegetation-Plot Databases (GIVD): a new resource for vegetation science. Journal of Vegetation Science, 22
, 582–597. doi:10.1111/j.1654-1103.2011.01265.x
Gartner, D., & Schulz, B. (2009). The vegetation diversity and structure indicator. In J. A. Westfall (Ed.), 2009. FIA national assessment of data quality for forest health indicators. Gen. Tech. Rep. NRS-53 (p. 80). Newtown Square: U.S. Department of Agriculture, Forest Service, Northeastern Research Service.
Gray, A. N. (2009). Monitoring and assessment of regional impacts from exotic invasive plants in forests of the Pacific coast, USA. In R. K. Kohli, S. Jose, H. P. Singh, & D. R. Batish (Eds.), Invasive plants and forest ecosystems (pp. 217–235). Boca Raton: CRC Press.
Gray, A. N., & Azuma, D. L. (2005). Repeatability and implementation of a forest vegetation indicator. Ecological Indicators, 5
Heinz Center. (2006). Filling the gaps: Priority data needs and key management challenges for national reporting on ecosystem condition (p. 104). Washington: H. John Heinz Center for Science, Economics and the Environment.
Homer, C., Huang, C., Yang, L., Wylie, B., & Coan, M. (2004). Development of a 2001 National Landcover Database for the United States. Photogrammetric Engineering and Remote Sensing, 70, 829–840.
Huebner, C. D., & Tobin, P. C. (2006). Invisibility of mature and 15-year-old deciduous forests by exotic invaders. Plant Ecology, 186
Hutchinson, T. F., & Vankat, J. L. (1997). Invasibility and effects of amur honeysuckle in southwestern Ohio forests. Conservation Biology, 11
Ibáñez, I., Silander, J. A., Jr., Allen, J. M., Treanor, S. A., & Wilson, A. (2009). Identifying hotspots for plant invasions and forecasting focal points of further spread. Journal of Applied Ecology, 46
Knapp, L. B., & Canham, C. D. (2000). Invasion of an old growth forest in New York by Alianthus altissima
: sapling growth and recruitment in canopy gaps. Journal of the Torrey Botanical Society, 127
Kuchler, A. W. (1969). Vegetation of Kansas on maps. Transactions of the Kansas Academy of Science, 72
Kuhman, T. R., Pearson, S. M., & Turner, M. G. (2010). Effects of land-use history and the contemporary landscape on non-native plant invasion at the local and regional scales in the forest-dominated southern Appalachians. Landscape Ecology, 25
Mack, R. N. (2003). Plant naturalizations and invasions in the eastern United States: 1634–1860. Annals of the Missouri Botanical Garden, 90
Marchand, P., & Houle, G. (2006). Spatial patterns of plant species along a forest edge: what are their determinants? Forest Ecology and Management, 223
McNab, W. H., Cleland, D. T., Freeouf, J. A., Keys, J. E., Nowacki, G. J., Carpenter, C. A., & comps. (2005). Description of ecological subregions: sections of the conterminous United States [CD-ROM] (p. 80). Washington: U.S. Department of Agriculture, Forest Service.
Meekins, F. J., & McCarthy, B. C. (2001). Effects of environmental variation on the invasive success of a nonindigenous forest herb. Ecological Applications, 11
Moser, W. K., Hansen, M. D., & McWilliams, W. H. (2009). Relationship of invasive ground cover plant presence to evidence of disturbance in forests of the upper Midwest of the United States. In R. K. Kohli, S. Jose, H. P. Singh, & D. R. Batish (Eds.), Invasive plants and forest ecosystems (pp. 29–58). Boca Ratan: CRC Press.
North American Weed Management Association (NAWMA). (2002). North American invasive plant mapping standard.
. Accessed 24 February 2012.
Noss, R. F. (1999). Assessing and monitoring forest biodiversity: a suggested framework and indicators. Forest Ecology and Management, 115
Ohlemüller, R., Walker, S., & Wilson, J. B. (2006). Local vs regional factors as determinants of the invasibility of indigenous forest fragments by alien plant species. Oikos, 112
Olson, C., & Cholewa, A. F. (2009). A guide to nonnative invasive plants inventoried in the north by Forest Inventory and Analysis. Gen. Tech. Rep. NRS-52 (p. 194). Newtown Square: U.S. Department of Agriculture, Forest Service, Northern Research Station.
Omernik, J. M. (1987). Ecoregions of the conterminous United States, Map (scale 1:7,500,000). Annals of the Association of American Geographers, 77
Pimentel, D., Zuniga, R., & Morrison, D. (2005). Update on the environmental and economic costs associated with alien-invasive species in the United States. Ecological Economics, 52
Pluess, T., Cannon, R., JarošíK, V., Pergl, J., Pyšek, P., & Bacher, S. (2012). When are eradication campaigns successful? A test of common assumptions. Biological Invasions
Pregitzer, K. S., Goebel, P. C., & Wigley, T. B. (2001). Evaluating forestland classification schemes as tools for maintaining biodiversity. Journal of Forestry, 99, 33–40.
Reichard, S. H., & White, P. (2001). Horticulture as a pathway of invasive plant introductions in the United States. BioScience, 51
Richardson, D. M., & Pyšek, P. (2006). Plant invasions: merging concepts of species invasiveness and community invisibility. Progress in Physical Geography, 30
Richardson, D. M., Pyšek, P., Rejmánek, M., Barbour, M. G., Panetta, F. D., & West, C. J. (2000). Naturalization and invasion of alien plants: concepts and definitions. Diversity and Distributions, 6
Riitters, K. H., Wickham, J. D., O’Neill, R. V., Jones, K. B., Smith, E. R., Coulston, J. W., Wade, T. G., & Smith, J. H. (2002). Fragmentation of continental United States forests. Ecosystems, 5
SAS Institute. (2011). SAS 9.3. Cary, NC: SAS Institute Inc. Online documentation http://support.sas.com/documentation
. Accessed 27 February 2012.
Schulte, L. A., Mottl, E. C., & Palik, B. J. (2011). The association of two invasive shrubs, common buckthorn (Rhamnus cathartica
) and Tartarian honeysuckle (Lonicera tatarica
), with oak communities in the midwestern United States. Canadian Journal of Forest Research, 41
Schulz, B. K., Bechtold, W. A., & Zarnoch, S. J. (2009). Sampling and estimation procedures for the vegetation diversity and structure indicator. PNW-GTR-781 (p. 53). Portland: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.
Schulz, B., Moser, W. K., Olson, C., & Johnson, K. (2012). Regional distribution of introduced plant species in the forests of the northeastern corner of the United States. In K. M. Potter, B. L. Conkling, (Eds.), Draft Forest Health Monitoring 2011 National Technical Report
, Version 1/20/2012. Washington, DC: U.S. Department of Agriculture, Forest Service, Forest Health Monitoring Program. 123 p. http://www.fhm.fs.fed.us/pubs/misc/draft_FHM_2010_National_Technical_Report.pdf
. Accessed 24 February 2012
Scott, W. A., & Hallam, C. J. (2002). Assessing species misidentification rates through quality assurance of vegetation monitoring. Plant Ecology, 165
Stohlgren, T. J., Binkely, D., Chong, G. W., Kalkhan, M. A., Schell, L. A., Bull, K. A., Otsuki, Y., Newman, G., Baskin, M., & Son, Y. (1999). Exotic plant species invade hotspots of native plant diversity. Ecological Monographs, 69
Stohlgren, T. J., Barnett, D., Flather, C., Kartesz, J., & Peterjohn, B. (2005). Plant species invasions along the latitudinal gradient in the United States. Ecology, 89
Swearingen, J., Slattery, B., Reshetiloff, K., & Zwicker, S. (2010). Plant invaders of mid-Atlantic natural areas (4th ed., p. 168). Washington: National Park Service and U.S. Fish and Wildlife Service.
U.S. Department of Agriculture, Forest Service (2007). Forest inventory and analysis national core field guide: field data collection procedures for phase 3 plots
. Version 4.0. U.S. Department of Agriculture, Forest Service, Washington Office. Internal report. On file with: U.S. Department of Agriculture, Forest Service (available online at: http://fia.fs.fed.us/library/field-guides-methods-proc/
U.S. Department of Agriculture, Natural Resource Conservation Service (USDA NRCS). (2000). The PLANTS Database
. National Plant Data Center, Baton Rouge USA (http://npdc.usda.gov/
Vilà, M., & Ibàñez, I. (2011). Plant invasions in the landscape. Landscape Ecology, 26
Warren, R. J., Bahn, V., Kramer, T. D., Tang, Y., & Bradford, M. A. (2011). Performance and reproduction of an exotic invader across temperate forest gradients. Ecosphere
, 2(2) Article 14. www.esajournals.org
Webster, C. R., Jenkins, M. A., & Jose, S. (2006). Woody invaders and the challenges they pose to forest ecosystems in the eastern United States. Journal of Forestry, 104(7), 366–374.
Wiegmann, S. M., & Waller, D. M. (2006). Fifty years of change in north upland forest understories: identity and traits of “winner” and “loser” plant species. Biological Conservation, 129
Woodall, C. W., Conkling, B. L., Amacher, M. C., Coulston, J. W., Jovan, S., Perry, C. H., et al. (2010). The Forest Inventory and Analysis Database Version 4.0: database description and users manual for phase 3. Gen. Tech. Rep. NRS-61 (p. 180). Newtown Square: U.S. Department of Agriculture, Forest Service, Northern Research Station.
Woodall, C. M., Amacher, M. C., Bechtold, W. A., Coulston, J. W., Jovan, S., Perry, C. H., Randolph, K. C., Schulz, B. K., Smith, G. C., Tkacz, B., & Will-Wolf, S. (2011). Status and future of the forest health indicators program of the USA. Environ Monitoring and Assessment, 177
Yates, E. D., Levai, D. F., & Williams, C. L. (2004). Recruitment of three non-native invasive plants into a fragmented forest in southern Illinois. Forest Ecology and Management, 190
Zenner, E. K., Peck, J. E., Brubaker, K., Gamble, B., Gilbert, C., Heggenstaller, D., Hickey, J., Sitch, K., & Withington, R. (2010). Combining ecological classification systems and conservation filters could facilitate the integration of wildlife and forest management. Journal of Forestry, 108, 296–300.