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Assessing Invasiveness of Exotic Weeds outside their Current Invasive Range

  • Matthew J. Rinella (a1)

When exotic species invade a region, it becomes important to assess their invasiveness in adjacent uninvaded regions to determine if weed prevention measures are needed. Leafy spurge and knapweed species are absent from the vast majority of eastern Montana, but the region is surrounded by regions heavily invaded by these species. To assess invasiveness of leafy spurge and Russian and spotted knapweed in common eastern Montana grassland sites, I introduced these species to three sites as seeds (120 live seeds plot−1) and seedlings (6 plot−1). I assessed how common grazing regimes influenced invasiveness by imposing cattle, sheep, mixed grazing (i.e., cattle plus sheep), and grazing exclusion treatments for 7 yr. Invader survival did not appear to differ greatly among sheep, cattle, and mixed grazing treatments, but excluding grazing lowered probabilities that plots maintained invaders for the entire study period at two of three sites. At these same sites, grazing exclusion increased growth rates of those invaders that did survive, at least in the case of leafy spurge. Regardless of grazing treatment or site, however, large proportions of plots did not maintain invaders through the end of the study period. At one heavy clay site, only one small leafy spurge plant persisted through the end of the study. In the seventh study year, the plots with the most leafy spurge and Russian knapweed produced 222 and 112 stems, respectively, and the stems remained mostly confined to the 2- by 2-m plots. These findings suggest that, barring intense disturbance, leafy spurge and spotted and Russian knapweed might be incapable of invading some grasslands of eastern Montana, particularly upland sites with high clay content. Any upland sites in the region these species are capable of invading will likely be invaded only very slowly.

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J. H. Albert and S. Chib 1993. Bayesian analysis of binary and polychotomous response data. J. Am. Statistical Assoc. 88:669679.

J. D. Bates 2005. Herbaceous response to cattle grazing following juniper cutting in Oregon. Rangeland Ecol. Manag. 58:225233.

C. J. Clark 2007. Are plant populations seed limited? A critique and meta-analysis of seed addition experiments. Am. Nat. 170:128142.

K. M. Crawford and K. D. Whitney 2010. Population genetic diversity influences colonization success. Mol. Ecol. 19:12531263.

C. M. D'Antonio 1993. Mechanisms controlling invasion of coastal plant communities by the alien succulent Carpobrotus edulis . Ecology 74:8395.

M. A. Davis , J. P. Grime , and K. Thompson 2000. Fluctuating resources in plant communities: a general theory of invasibility. J. Ecol. 88:528534.

J. M. DiTomaso 2000. Invasive weeds in rangelands: species, impacts, and management. Weed Sci. 48:255265.

C. A. Duncan , J. J. Jachetta , M. L. Brown , V. F. Carrithers , J. K. Clark , J. M. DiTomaso , R. G. Lym , K. C. McDaniel , M. J. Renz , and P. M. Rice 2004. Assessing the economic, environmental, and societal losses from invasive plants on rangeland and wildlands. Weed Technol. 18:14111416.

O. Eriksson and J. Ehrlen 1992. Seed and microsite limitation of recruitment in plant populations. Oecologia 91:360364.

O. Eriksson , S. Wikstrom , A. Eriksson , and R. Lindborg 2006. Species-rich Scandinavian grasslands are inherently open to invasion Biol. Invasions 8:355363.

A. K. Eschtruth and J. J. Battles 2009. Assessing the relative importance of disturbance, herbivory, diversity and propagule pressure in exotic plant invasion Ecol. Monogr. 79:265280.

K. Goodwin , R. Sheley , J. Jacobs , S. Wood , M. Manoukian , M. Schuldt , E. Miller , and S. Sackman 2012. Cooperative prevention systems to protect rangelands from the spread of invasive plants. Rangelands 34:2631.

N. L. Haan , M. R. Hunter , and M. D. Hunter 2012. Investigating predictors of plant establishment during roadside restoration. Restor. Ecol. 20:315321.

R. K. Heitschmidt , K. D. Klement , and M. R. Haferkamp 2005. Interactive effects of drought and grazing on northern Great Plains rangelands. Rangeland Ecol. Manag. 58:1119.

J. P. Hogan and C. J. C. Phillips 2011. Transmission of weed seed by livestock: a review. Anim. Prod. Sci. 51:391398.

J. S. Jacobs , R. L. Sheley , and J. J. Borkowski 2006. Integrated management of leafy spurge-infested rangeland. Rangeland Ecol. Manag. 59:475482.

J. J. James , T. J. Svejcar , and M. J. Rinella 2011. Demographic processes limiting seedling recruitment in aridland restoration. J. Appl. Ecol. 48:961969.

S. L. Kronberg , R. B. Muntifering , E. L. Ayers , and C. B. Marlow 1993. Cattle avoidance of leafy spurge: a case of conditioned aversion. J. Range Manag. 46:364366.

S. L. Kronberg and J. W. Walker 1999. Sheep preference for leafy spurge from Idaho and North Dakota. J. Range Manag. 52:3944.

S. Lachmuth , W. Durka , and F. M. Schurr 2010. The making of a rapid plant invader: genetic diversity and differentiation in the native and invaded range of Senecio inaequidens . Mol. Ecol. 19:39523967.

J. G. Lambrinos 2002. The variable invasive success of Cortaderia species in a complex landscape. Ecology 83:518529.

J. M. Levine , P. B. Adler , and S. G. Yelenik 2004. A meta-analysis of biotic resistance to exotic plant invasions. Ecol. Lett. 7:975989.

D. M. Lodge 1993. Biological invasions: lessons from ecology. Trends Ecol. Evol. 8:133136.

W. M. Lonsdale and A. M. Lane 1994. Tourist vehicles as vectors of weed seeds in Kakadu National Park, Northern Australia. Biol. Conserv. 69:277283.

R. A. B. Mason , J. Cooke , A. T. Moles , and M. R. Leishman 2008. Reproductive output of invasive versus native plants. Glob. Ecol. Biogeogr. 17:633640.

A. H. Meyer and B. Schmid 1999. Seed dynamics and seedling establishment in the invading perennial Solidago altissima under different experimental treatments. J. Ecol. 87:2841.

M. Oesterheld and O. E. Sala 1990. Effects of grazing on seedling establishment: the role of seed and safe-site availability. J. Veg. Sci. 1:353358.

B. E. Olson and R. T. Wallander 2001. Sheep grazing spotted knapweed and Idaho fescue. J. Range Manag. 54:2530.

Y. K. Ortega and D. E. Pearson 2011. Long-term effects of weed control with picloram along a gradient of spotted knapweed invasion. Rangeland Ecol. Manag. 64:6777.

L. Perez-Camacho and S. Rebollo 2009. Are irrigation and grazing effects transfered, accumulated, or counteracted during plant recruitment? Plant Ecol. 201:501515.

P. M. Rice , C. J. Toney , D. J. Bedunah , and C. E. Carlson 1997. Plant community diversity and growth form responses to herbicide applications for control of Centaurea maculosa . J. Appl. Ecol. 34:13971412.

M. J. Rinella and B. J. Hileman 2009. Efficacy of prescribed grazing depends on timing, intensity and frequency. J. Appl. Ecol. 46:796803.

M. J. Rinella and E. C. Luschei 2007. Hierarchical Bayesian methods estimate invasive weed impacts at pertinent spatial scales. Biol. Invasions 9:545558.

M. J. Rinella , B. D. Maxwell , P. K. Fay , T. Weaver , and R. L. Sheley 2009. Control effort exacerbates invasive species problem. Ecol. Appl. 19:155162.

A. C. Schmidt , L. H. Fraser , C. N. Carlyle , and E. R. L. Bassett 2012. Does cattle grazing affect ant abundance and diversity in temperate grasslands? Rangeland Ecol. Manag. 65:292298.

S. S. Seefeldt , J. B. Taylor , and S. Van Vleet 2007. Reducing Euphorbia esula with a combination of sheep grazing and imazapic. J. Arid Environ. 69:432440.

R. L. Sheley , J. S. Jacobs , and J. M. Martin 2004. Integrating 2,4-D and sheep grazing to rehabilitate spotted knapweed infestations. J. Range Manag. 57:371375.

D. Simberloff 2009. The role of propagule pressure in biological invasions. Annu. Rev. Ecol. Evol. Syst. 40:81102.

R. E. Snyder 2003. How demographic stochasticity can slow biological invasions. Ecology 84:13331339.

T. J. Stohlgren , L. D. Schell , and B. Vanden Heuvel 1999. How grazing and soil quality affect native and exotic plant diversity in Rocky Mountain grasslands. Ecol. Appl. 9:4564.

M. Vilà , A. D. Siamantziouras , G. Brundu , I. Camarda , P. Lambdon , F. Medail , E. Moragues , C. M. Suehs , A. Traveset , A. Y. Troumbis , and P. E. Hulme 2008. Widespread resistance of Mediterranean island ecosystems to the establishment of three alien species. Divers. Distrib. 14:839851.

M. Von der Lippe and I. Kowarik 2007. Long-distance dispersal of plants by vehicles as a driver of plant invasions. Conserv. Biol. 21:986996.

J. W. Walker , S. L. Kronberg , S. L. Al-Rowaily , and N. E. West 1994. Comparison of sheep and goat preferences for leafy spurge. J. Range Manag. 47:429434.

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Invasive Plant Science and Management
  • ISSN: 1939-7291
  • EISSN: 1939-747X
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