ECOLOGICAL RESISTANCE TO BIOLOGICAL INVASION OVERWHELMED BY PROPAGULE PRESSURE

Models and observational studies have sought patterns of predictability for invasion of natural areas by nonindigenous species, but with limited success. In a field experiment using forest understory plants, we jointly manipulated three hypothesized determinants of biological invasion outcome: resident diversity, physical disturbance and abiotic conditions, and propagule pressure. The foremost constraints on net habitat invasibility were the number of propagules that arrived at a site and naturally varying resident plant density. The physical environment (flooding regime) and the number of established resident species had negligible impact on habitat invasibility as compared to propagule pressure, despite manipulations that forced a significant reduction in resident richness, and a gradient in flooding from no flooding to annual flooding. This is the first experimental study to demonstrate the primacy of propagule pressure as a determinant of habitat invasibility in comparison with other candidate controlling factors.

[1]  T. Blackburn,et al.  The role of propagule pressure in explaining species invasions. , 2005, Trends in ecology & evolution.

[2]  B. V. Holle,et al.  Biotic resistance to invader establishment of a southern Appalachian plant community is determined by environmental conditions , 2005 .

[3]  Daniel Simberloff,et al.  Testing Fox's assembly rule: does plant invasion depend on recipient community structure? , 2004 .

[4]  Forrest W. BREY,et al.  Statistical Methods for Survival Data Analysis , 2003 .

[5]  D. Richardson,et al.  Inferring Process from Pattern in Plant Invasions: A Semimechanistic Model Incorporating Propagule Pressure and Environmental Factors , 2003, The American Naturalist.

[6]  D. Simberloff,et al.  The importance of biological inertia in plant community resistance to invasion , 2003 .

[7]  Robert K. Peet,et al.  DIVERSITY AND INVASIBILITY OF SOUTHERN APPALACHIAN PLANT COMMUNITIES , 2003 .

[8]  P. Fine,et al.  The invasibility of tropical forests by exotic plants , 2002, Journal of Tropical Ecology.

[9]  C. Lortie,et al.  Positive interactions among alpine plants increase with stress , 2002, Nature.

[10]  S. Harrison,et al.  BIOTIC AND ABIOTIC LIMITS TO THE SPREAD OF EXOTIC REVEGETATION SPECIES , 2002 .

[11]  C. D’Antonio,et al.  Ecosystem resistance to invasion and the role of propagule supply: A California perspective , 2001 .

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

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

[14]  Lindsay A. Turnbull,et al.  Are plant populations seed-limited? A review of seed sowing experiments. , 2000 .

[15]  M Rejmánek,et al.  Plant invasions — the role of mutualisms , 2000, Biological reviews of the Cambridge Philosophical Society.

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

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

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

[19]  Vascular Flora and Rare Species of New River Gorge , 1999 .

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

[21]  D. Holway Factors governing rate of invasion: a natural experiment using Argentine ants , 1998, Oecologia.

[22]  R. Green The influence of numbers released on the outcome of attempts to introduce exotic bird species to New Zealand , 1997 .

[23]  S. Higgins,et al.  Modeling invasive plant spread: the role of plant-environment interactions and model structure. , 1996 .

[24]  P. Moyle,et al.  BIOLOGICAL INVASIONS OF FRESH WATER: EMPIRICAL RULES AND ASSEMBLY THEORY , 1996 .

[25]  M. Crawley,et al.  Correlates of Introduction Success in Exotic New Zealand Birds , 1996, The American Naturalist.

[26]  J. P. Grime,et al.  An Experimental Study of Plant Community Invasibility , 1996 .

[27]  Gary G. Koch,et al.  Categorical Data Analysis Using The SAS1 System , 1995 .

[28]  P. Moyle,et al.  Invasion Resistance to Introduced Species by a Native Assemblage of California Stream Fishes. , 1993, Ecological applications : a publication of the Ecological Society of America.

[29]  D. Lodge,et al.  Biological invasions: Lessons for ecology. , 1993, Trends in ecology & evolution.

[30]  M. Bertness Interspecific Interactions among High Marsh Perennials in a New England Salt Marsh , 1991 .

[31]  R. Hobbs,et al.  Effect of disturbance and nutrient addition on native and introduced annuals in plant communities in the Western Australian wheatbelt , 1988 .

[32]  Elisa T. Lee,et al.  Statistical Methods for Survival Data Analysis , 1994, IEEE Transactions on Reliability.

[33]  B. P. Beirne BIOLOGICAL CONTROL ATTEMPTS BY INTRODUCTIONS AGAINST PEST INSECTS IN THE FIELD IN CANADA , 1975, The Canadian Entomologist.

[34]  M. Gordon Wolman,et al.  Fluvial Processes in Geomorphology , 1965 .

[35]  J.,et al.  An Agenda for Invasion Biology , 2022 .