Alien plants in checklists and floras: towards better communication between taxonomists and ecologists
Top Cited Papers
- 1 February 2004
- Vol. 53 (1) , 131-143
- https://doi.org/10.2307/4135498
Abstract
The number of studies dealing with plant invasions is increasing rapidly, but the accumulating body of knowledge has unfortunately also spawned increasing confusion about terminology. Invasions are a global phenomenon and comparison of geographically distant regions and their introduced biota is a crucially important methodological approach for elucidation of the determinants of invasiveness and invasibility. Comparative studies of alien floras provide substantial new insights to our understanding of general patterns of plant invasions. Such studies, using information in previously published floras and checklists, are fundamentally dependent on the quality of the assessment of particular species with respect to their taxonomic identity, time of immigration and invasion status. Three crucial decisions should be made when defining the status of a plant species in a given region: (1) whether the taxon is native or alien to that region (origin status); (2) what is its position in the invasion process, i.e., when was it introduced (residence status); and (3) what is the degree of its naturalization and possible invasion (invasion status). Standard floras differ hugely in their treatment of nonnative species and those with appropriate categorization of alien species according to their status are rather rare. The present paper suggests definitions of terms associated with plant invasions and places these into the context of floras. Recommendations are outlined on how to deal with the issue of plant invasions in standard floras with the aim of contributing to a better understanding between taxonomists and ecologists and allowing more detailed comparative analyses of alien floras of various regions of the world.Keywords
This publication has 32 references indexed in Scilit:
- A Checklist of the Trees, Shrubs, Herbs, and Climbers of MyanmarTaxon, 2003
- Inferring Nativity and Biogeographic Affinities of Central and Marginal Populations of Froelichia floridana (Amaranthaceae) from Inter-Simple Sequence Repeat (ISSR) MarkersThe Journal of the Torrey Botanical Society, 2002
- Patterns of invasion in temperate nature reservesBiological Conservation, 2001
- Cape plants: a conspectus of the Cape flora of South AfricaDiversity and Distributions, 2001
- Darwin's Naturalization Hypothesis RevisitedThe American Naturalist, 2001
- Naturalization and invasion of alien plants: concepts and definitionsDiversity and Distributions, 2000
- The taxonomic distribution of invasive angiosperm plants: Ecological insights and comparison to agricultural weedsBiological Conservation, 1998
- The flora of the Pitcairn Islands: a reviewBiological Journal of the Linnean Society, 1995
- Plant invasions, interspecific hybridization and the evolution of new plant taxaTrends in Ecology & Evolution, 1992
- Contributions to the Synanthropic (Adventive) Flora of the Railroads in St. Louis, Missouri, U.S.A.Annals of the Missouri Botanical Garden, 1979