The rich get richer: patterns of plant invasions in the United States

Observations from islands, small-scale experiments, and mathematical models have generally supported the paradigm that habitats of low plant diversity are more vulnerable to plant invasions than areas of high plant diversity. We summarize two independent data sets to show exactly the opposite pattern at multiple spatial scales. More significant, and alarming, is that hotspots of native plant diversity have been far more heavily invaded than areas of low plant diversity in most parts of the United States when considered at larger spatial scales. Our findings suggest that we cannot expect such hotspots to repel invasions, and that the threat of invasion is significant and predictably greatest in these areas.

[1]  Marcel Rejmánek,et al.  Invasive plant species and invasible ecosystems. , 1999 .

[2]  Marcel Rejmánek,et al.  Invasibility of plant communities , 1989 .

[3]  John D. Rummel,et al.  Some differences between invasion-structured and coevolution-structured competitive communities: a preliminary theoretical analysis , 1983 .

[4]  W. M. Lonsdale,et al.  GLOBAL PATTERNS OF PLANT INVASIONS AND THE CONCEPT OF INVASIBILITY , 1999 .

[5]  S. Cline,et al.  Environmental monitoring and assessment program forest health monitoring quality assurance project plan for detection monitoring project , 1995 .

[6]  D. Tilman.  THE ECOLOGICAL CONSEQUENCES OF CHANGES IN BIODIVERSITY: A SEARCH FOR GENERAL PRINCIPLES101 , 1999 .

[7]  Michael Turelli,et al.  Niche overlap and invasion of competitors in random environments I. Models without demographic stochasticity , 1981 .

[8]  J. P. Grime.  Control of species density in herbaceous vegetation , 1973 .

[9]  Mark A. Davis,et al.  Fluctuating resources in plant communities: a general theory of invasibility , 2000 .

[10]  W. Post,et al.  Community assembly and food web stability , 1983 .

[11]  R. Dirzo,et al.  Biodiversity and Ecosystem Processes in Tropical Forests , 1996, Ecological Studies.

[12]  T. Stohlgren.  Beyond theories of plant invasions: lessons from natural landscapes , 2002 .

[13]  Jonathan M. Levine,et al.  Elton revisited: a review of evidence linking diversity and invasibility , 1999 .

[14]  M. Rejmánek.  Species Richness and Resistance to Invasions , 1996 .

[15]  C. Elton.  The Ecology of Invasions by Animals and Plants , 1960, Springer US.

[16]  Geneva W. Chong,et al.  Assessing Vulnerability to Invasion by Nonnative Plant Species at Multiple Spatial Scales , 2002, Environmental management.

[17]  J. Levine.  Species diversity and biological invasions: relating local process to community pattern. , 2000, Science.

[18]  Thomas J. Stohlgren,et al.  Rapid Assessment of Plant Diversity Patterns: A Methodology for Landscapes , 1997 .

[19]  Thomas J. Stohlgren,et al.  EXOTIC PLANT SPECIES INVADE HOT SPOTS OF NATIVE PLANT DIVERSITY , 1999 .

[20]  James A. Drake,et al.  Biological invasions : a global perspective , 1989 .

[21]  David Tilman,et al.  Plant diversity increases resistance to invasion in the absence of covarying extrinsic factors , 2000 .

[22]  David Tilman,et al.  Biodiversity as a barrier to ecological invasion , 2002, Nature.

[23]  T. Case,et al.  Invasion resistance arises in strongly interacting species-rich model competition communities. , 1990, Proceedings of the National Academy of Sciences of the United States of America.

[24]  Charles C. Elton,et al.  The Ecology of Invasions by Animals and Plants. , 1959 .