Resource limitation, biodiversity, and competitive effects interact to determine the invasibility of rock pool microcosms Article Received: 21 November 2003 Accepted: 30 June 2004 DOI:
10.1007/s10530-004-0997-8 Cite this article as: Romanuk, T.N. & Kolasa, J. Biol Invasions (2005) 7: 711. doi:10.1007/s10530-004-0997-8 Abstract
The success of species invasions depends on both the characteristics of the invaded habitat and the traits of the invasive species. At local scales biodiversity may act as a barrier to invasion; however, the mechanism by which biodiversity confers invasion resistance to a community has been the subject of considerable debate. The purpose of this study was to test the hypothesis that productivity and diversity affected the ability of a regionally available species to colonize communities from which it is absent. We hypothesized that the invasibility of rock pool invertebrate communities would increase with increasing nutrients and decrease with increasing diversity. We tested this possibility using naturally invaded outdoor aquatic microcosms. We demonstrated that the invasibility of an experimental multi-trophic aquatic community by a competitive native midge species (Ceratopogonidae:
Dasyhelea sp.) was determined by an interaction between resource availability, diversity, and the densities of two competitive ostracods species. Nutrient enrichment increased invasion success; however, within nutrient-enriched microcosms, invasion success was highest in the low-diversity treatments. Our results suggest that resource availability may in fact be the principal mechanism determining invasibility at local scales in multi-trophic rock pool communities; however resource availability can be determined by both nutrient input as well as by the diversity of the biotic community. Keywords aquatic Dasyhelea invasion nutrient limitation rock pools species richness zooplankton References Cahill, JF, Jr 2003 Neighbourhood-scale diversity, composition and root crowding do not alter competition during drought in a native grassland Ecology Letters 6 599 CrossRef Google Scholar Callaway, RM, Aschehoug, ET 2000 Invasive plants versus their new and old neighbors: a mechanism for exotic invasion Science 290 521 523 CrossRef PubMed Google Scholar Case, TJ 1990 Invasion resistance arises in strongly interacting species-rich model competition communities Proceedings of the National Academy Sciences of the USA 87 9610 9614 Google Scholar Christian, C 2001 Consequences of a biological invasion reveal the importance of mutualism for plant communities Nature 403 635 638 CrossRef Google Scholar Cohen, AN, JT, Carlton 1998 Accelerating invasion rate in a highly invaded estuary Science 279 555 558 CrossRef PubMed Google Scholar Crawley, MJ. 1987 What makes a community invasible? Gray, AJ Crawley, MJ. Edwards, PJ. eds. Colonization, Succession and Stability Blackwell Scientific Publications Oxford 429 453 Google Scholar D’Antonio, CM 1993 Mechanisms controlling invasion of coastal plant communities by the alien succulent Carpobrotus edulis Ecology 74 83 95 Google Scholar Davis, MA, Grime, JP, Thompson, K 2000 Fluctuating resources in plant communities: a general theory of invasibility Journal of Ecology 88 528 536 CrossRef Google Scholar Davis, MA, Pelsor, M 2001 Experimental support for a resource-based mechanistic model of invasiblity Ecology Letters 4 421 428 CrossRef Google Scholar Debinski, DM, Holt, RD 2000 Habitat fragmentation experiments: a global survey and overview Conservation Biology 14 342 355 CrossRef Google Scholar Drake, JA Mooney, HA Castri, F Groves, RH Kruger, FJ Rejmanek, M. Williamson, M. eds. 1989Biological Invasions: A Global Perspective John Wiley New York Google Scholar Dukes, JS 2001 Biodiversity and invasibility in grassland microcosms Oecologia 126 563 568 CrossRef Google Scholar Elton, CS 1958The Ecology of Invasions by Animals and Plants Methuen London Google Scholar Fox, MD., Fox, BJ. 1986 The susceptibility of natural communities to invasion Groves, RH. Burdon, JJ. eds. Ecology of Biological Invasions Cambridge University Press Cambridge, UK 57 66 Google Scholar Franklin, RB, Garland, JL, Bolster, CH 2001 Impact of dilution on microbial community structure and functional potential: comparison of numerical simulations and batch culture experiments Applied and Environment Microbio- logy 67 702 712 CrossRef Google Scholar Garland, JL, Lehman, RM 1999 Dilution/extinction of community phenotypic characters to estimate relative structural diversity in mixed communities FEMS Micro-biology Ecology 30 333 343 CrossRef Google Scholar
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