Abstract
AbstractUnderstanding the causes of spatial variation in the distribution and richness of alien species is a key goal of invasion biology. Thanks to the increasing availability of geographical compendia of alien species it is also the subject of a burgeoning scientific literature. Here, we review elements of this literature to argue that understanding the causes of variation in alien species richness cannot be achieved without knowledge of the number of species introduced to an area—termed colonization pressure. The implications of a lack of information on colonization pressure are widespread and, we believe, poorly recognised. We start by discussing a recent general model for alien species richness that demonstrates why colonization pressure is a fundamental determinant of this. We then explore the literature on alien species richness, particularly on islands, to demonstrate how failing to account for colonization pressure affects our perception of richness drivers. We further show that ignoring colonization pressure can bias our understanding of patterns in the distributions of alien species. We finish by discussing situations when colonization pressure may be more or less important for our understanding of alien invasions.
Publisher
Springer Science and Business Media LLC
Subject
Ecology,Ecology, Evolution, Behavior and Systematics
Reference63 articles.
1. Allen WL, Street SE, Capellini I (2017) Fast life history traits promote invasion success in amphibians and reptiles. Ecol Lett 20:222–230. https://doi.org/10.1111/ele.12728
2. Baiser B, Li D (2018) Comparing species–area relationships of native and exotic species. Biol Invasions 20:3647–3658. https://doi.org/10.1007/s10530-018-1802-4
3. Blackburn TM, Lockwood JL, Cassey P (2008) The island biogeography of exotic bird species. Glob Ecol Biogeogr 17:246–251
4. Blackburn TM, Lockwood JL, Cassey P (2009) Avian invasions: the ecology and evolution of exotic birds. Oxford University Press, Oxford
5. Blackburn TM, Lockwood JL, Cassey P (2011a) Fifty years on: confronting Elton’s hypotheses about invasion success with data from exotic birds. In: Richardson DM (ed) Fifty years of invasion ecology. The legacy of Charles Elton. Wiley, Oxford, pp 161–173
Cited by
29 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献