How does spatio-temporal disturbance influence species diversity in a hierarchical competitive system? Prospective order of species coexistence and extinction

Population Ecology - 2003
Kyoko Ohsawa1, Kohkichi Kawasaki2, Fugo Takasu1, Nanako Shigesada1
1Department of Information and Computer Sciences, Nara Women’s University, Nara, Japan
2Department of Knowledge Engineering and Computer Sciences, Doshisha University, Kyo-Tanabe, Japan

Tóm tắt

To address how habitat destruction and hierarchical competition among species affect the spatio-temporal dynamics of a multi-species community, we present a compartment model in which multiple species undergo dispersal and competitive interactions in a patchy habitat arranged in a two-dimensional lattice. We assume that disturbances are periodically imposed on some parts of the lattice in a block, followed by a period free of disturbance. For convenience, species are ranked in order of competitive ability. We further assume that the intrinsic growth rate of species i, ε i , and the dispersal ability, D i , increase in decreasing order of rank. Our model can analytically determine the exact number of surviving species when disturbance is absent. In the presence of disturbance, we numerically examine how spatio-temporal changes in environmental heterogeneity affect species coexistence and extinction, for the case in which the value of ε i /D i monotonically increases or decreases with rank. The results demonstrate that (1) when the interspecific competition is smaller than the intraspecific competition, we can provide predictions on the prospective order of species to be driven extinct and the order of potential species to revive with increasing extents of disturbance; (2) when the interspecific competition is stronger than intraspecific competition, a small difference in the disturbance level can lead to drastic changes in the species composition, their densities and the order of species extinction. In addition, comparison with other similar models reveals that differences in species interaction in local population dynamics critically affect the disturbance-mediated species diversity.

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Tài liệu tham khảo

Caswell H, Cohen JE (1991) Disturbance and diversity in metapopulations. Biol J Linn Soc 42:193–218

Etter RJ, Caswell H (1994) The advantages of dispersal in a patchy environment: effects of disturbance in a cellular automaton model. In: Eckelbarger KJ, Young CM (eds) Reproduction, larval biology and recruitment in the deep-sea benthos. Columbia University Press, pp 93–109

Hanski I (1983) Coexistence of competitors in patchy environment. Ecology 64:493–500

Hanski I (1999) Metapopulation ecology. Oxford series in ecology and evolution. Oxford University Press, Oxford

Hanski I, Gyllenberg M (1997) Uniting two general patterns in the distribution of species. Science 275:397–400

Harada Y, Iwasa Y (1994) Lattice population dynamics for plants with dispersing seeds and vegetative propagation. Res Popul Ecol 36:237–249

Hastings A (1980) Disturbance coexistence, history, and competition for space. Theor Popul Biol 18:363–373

Horn HS, MacArthur RH (1972) Competition among fugitive species in a harlequin environment. Ecology 53:749–752

Huston MA (1994) Biological diversity: the coexistence of species on changing landscapes. Cambridge University Press, Cambridge

Ives AR, Turner MG, Pearson SM (1998) Local explanations of landscape patterns: can analytical approaches approximate simulation models of spatial processes? Ecosystems 1:35–51

Kondoh M (2001) Unifying the relationships of species richness to productivity and disturbance. Proc R Soc Lond B 268:269–271

Kubo T, Iwasa Y, Furumoto N (1996) Forest spatial dynamics with gap expansion: total gap area and gap size distribution. J Theor Biol 180:229–246

Lande R (1987) Extinction thresholds in demographic models of territorial populations. Am Nat 130:624–635

Lehman CL, Tilman D (1997) Competition in spatial habitats. In: Tilman D, Kareiva P (eds) Spatial ecology: the role of space in population dynamics and interspecific interactions. Princeton University Press, Princeton, N.J.

Levin SA, Paine RT (1974) Disturbance, patch formation, and community structure. Proc Natl Acad Sci USA 71:2744–2747

Levins R (1969) Some demographic and genetic consequences of environmental heterogeneity for biological control. Bull Entomol Soc Am 15:237–240

McEvoy PB, Rudd NT, Cox CS, Huso M (1993) Disturbance, competition, and herbivory effects on ragwort Senecio jacobaea populations. Ecol Monogr 64:55–75

Muko S, Iwasa Y (2000) Species coexistence by permanent spatial heterogeneity in a lottery model. Theor Popul Biol 57:273–284

Nakagiri N, Tainaka K, Tao T (2001) Indirect relation between species extinction and habitat destruction. Ecol Model 137:109–118

Nee S, May RM (1992) Dynamics of metapopulations: habitat destruction and competitive coexistence. J Anim Ecol 61:37–40

Neuhauser C (1998) Habitat destruction and competitive coexistence in spatially explicit models with local interactions. J Theor Biol 193:445–463

Ohsawa K, Kawasaki K, Takasu F, Shigesada N (2002) Recurrent habitat disturbance and species diversity in a multiple-competitive species system. J Theor Biol 216:123–138

Ovaskainen O, Sato K, Bascompte J, Hanski I (2002) Metapopulation models for extinction threshold in spatially correlated landscapes. J Theor Biol 215:95–108

Rejmánek M (1984) Perturbation-dependent coexistence and species diversity in ecosystems. In: Schuster P (ed) Stochastic phenomena and chaotic behaviour in complex systems. Springer, Berlin Heidelberg New York, pp 220–230

Rejmánek M (1989) Invisibility of plant communities. In: Drake JA, Mooney HA, di Castri F, Groves RH, Kruger FJ, Rejmánek M, Williamson M (eds) Biological invasions: a global perspective. Scope 37. Wiley, New York, pp 369–383

Sato K, Matsuda H, Sasaki A (1994) Pathogen invasion and host extinction in lattice structured populations. J Math Biol 32:251–268

Shigesada N, Kawasaki K (1997) Biological invasions: theory and practice. Oxford series in ecology and evolution. Oxford University Press, Oxford

Suding KN, Goldberg D (2001) Do disturbances alter competitive hierarchies? Mechanisms of change following gap creation. Ecology 82:2133–2149

Teramoto E (1993) Random disturbance and diversity of competitive systems. J Math Biol 31:761–769

Tilman D (1994) Competition and biodiversity in spatially structured habitats. Ecology 75:2–16

Tilman D, Kareiva P (1997) Spatial ecology. Princeton University Press, Princeton

Tilman D, Lehman CL, Yin C (1997) Habitat destruction, dispersal, and deterministic extinction in competitive communities. Am Nat 149:407–435

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Population Ecology

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