Evolutionary Ecology

, Volume 11, Issue 6, pp 723–731 | Cite as

On the evolutionary stability of sink populations

  • Robert D. Holt

Abstract

The evolution of adaptive behaviours can influence population dynamics. Conversely, population dynamics can affect both the rate and direction of adaptive evolution. This paper examines reasons why sink populations – populations maintained by immigration, preventing local extinction – might persist in the habitat repertoire of a species over evolutionary time-scales. Two such reasons correspond to standard explanations for deviations from an ideal free habitat distribution: organisms may not be free to settle in whichever habitat has the highest potential fitness, and may be constrained by costs, perceptual limitations, or mode of dispersal in the acuity of their habitat selectivity. Here, I argue that a third general reason for persistent sink populations is provided by unstable population dynamics in source habitats. I present a simple model illustrating how use of a sink habitat may be selectively advantageous, when a source population has unstable dynamics (which necessarily reflects temporal variation in local fitnesses). Species with unstable local dynamics in high-quality habitats should be selected to utilize a broader range of habitats than species with stable local dynamics, and in particular in some circumstances should utilize sink habitats. This observation has implications for the direction of niche evolution, and the likelihood of niche conservatism.

habitat breadth niche conservatism source dynamics 

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References

  1. Abrahams, M.V. (1986) Patch choice under perceptual constraints: A cause for deviations from an ideal free distribution. Behav. Ecol. Sociobiol. 19, 409–415.Google Scholar
  2. Abrams, P.A. (1996) Dynamics and interactions in food webs with adaptive foragers. In Food Webs: Integration of Patterns and Dynamics (G.A. Polis and K.O. Winemiller, eds), pp. 113–121. Chapman & Hall, London.Google Scholar
  3. Bull, J.J., Thompson, C., Ng, D. and Moore, R. (1987) A model for natural selection of genetic migration. Am. Nat. 129, 143–157.Google Scholar
  4. Chesson, P. and Rosenzweig, M. (1991) Behavior, heterogeneity, and the dynamics of interacting species. Ecology 72, 1187–1195.Google Scholar
  5. Dias, P.C. (1996) Sources and sinks in population biology. Trends Ecol. Evol. 11, 326–330.Google Scholar
  6. Fretwell, S.D. (1972) Populations in a Seasonal Environment. Princeton University Press, Princeton, NJ.Google Scholar
  7. Hamilton, W.D. and May, R.M. (1977) Dispersal in stable habitats. Nature 269, 578–581.Google Scholar
  8. Hastings, A. (1983) Can spatial variation alone lead to selection for dispersal? Theor. Pop. Biol. 24, 244–251.Google Scholar
  9. Holt, R.D. (1985) Population dynamics in two-patch environments: Some anomalous consequences of an optimal habitat distribution. Theor. Pop. Biol. 28, 181–208.Google Scholar
  10. Holt, R.D. (1993) Ecology at the mesoscale: The influence of regional processes on local communities. In Species Diversity in Ecological Communities (R. Ricklefs and D. Schluter, eds), pp. 77–88. University of Chicago Press, Chicago, IL.Google Scholar
  11. Holt, R.D. (1996a) Demographic constraints in evolution: Towards unifying the evolutionary theories of senescence and niche conservatism. Evol. Ecol. 10, 1–11.Google Scholar
  12. Holt, R.D. (1996b) Adaptive evolution in source-sink environments: Direct and indirect effects of density-dependence on niche evolution. Oikos 75, 182–192.Google Scholar
  13. Holt, R.D. and McPeek, M.A. (1996) Chaotic population dynamics favors the evolution of dispersal. Am. Nat. 148, 709–718.Google Scholar
  14. Keddy, P.A. (1981) Experimental demography of the sand-dune annual, Cakile edentula, growing along an environmental gradient in Nova Scotia. J. Ecol. 69, 615–630.Google Scholar
  15. Kennedy, M. and Gary, R. (1993) Can ecological theory predict the distribution of foraging animals? A critical analysis of experiments on the Ideal Free Distribution. Oikos 68, 158–166.Google Scholar
  16. MacArthur, R.H. (1972) Geographical Ecology. Harper and Row, New York.Google Scholar
  17. May, R.M. and Oster, G.F. (1976) Bifurcations and dynamic complexity in simple ecological models. Am. Nat. 110, 573–599.Google Scholar
  18. McPeek, M.A. and Holt, R.D. (1992) The evolution of dispersal in spatially and temporally varying environments. Am. Nat. 140, 1010–1027.Google Scholar
  19. Morris, D.W. (1991) On the evolutionary stability of dispersal to sink habitats. Am. Nat. 137, 907–911.Google Scholar
  20. Pimm, S.L. (1991) The Balance of Nature? University of Chicago Press, Chicago, IL.Google Scholar
  21. Pulliam, H.R. (1988) Sources, sinks, and population regulation. Am. Nat. 132, 652–661.Google Scholar
  22. Pulliam, H.R. (1996) Sources and sinks: Empirical evidence and population consequences. In Population Dynamics in Ecological Space and Time (O.E. Rhodes Jr, R.K. Chesser and M.H. Smith, eds), pp. 45–70. University of Chicago Press, Chicago, IL.Google Scholar
  23. Pulliam, H.R. and Danielson, B.J. (1991) Sources, sinks, and habitat selection: A landscape perspective on population dynamics. Am. Nat. 137, S50–S66.Google Scholar
  24. Rosenzweig, M.L. (1985) Some theoretical aspects of habitat selection. In Habitat Selection in Birds (M. Cody, ed.), pp. 517–540. Academic Press, New York.Google Scholar
  25. Rosenzweig, M.L. (1987) Habitat selection as a source of biological diversity. Evol. Ecol. 1, 315–330.Google Scholar
  26. Seger, J. and Brockmann, H.J. (1987) What is bet-hedging? Oxford Surv. Evol. Biol. 4, 182–211.Google Scholar
  27. Sutherland, W.J., Townsend, C.R. and Patmore, J.M. (1988) A test of the ideal free distribution with unequal competitors. Behav. Ecol. Sociobiol. 23, 51–53.Google Scholar
  28. van Baalen, M. and Sabelis, M.W. (1993) Coevolution of patch selection strategies of predator and prey and the consequences for ecological stability. Am. Nat. 142, 646–670.Google Scholar
  29. Vincent, T.L. and Brown, J.S. (1989) The evolutionary response of systems to a changing environment. Appl. Math. Comput. 32, 185–206.Google Scholar

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • Robert D. Holt
    • 1
  1. 1.Department of Systematics and Ecology, Natural History MuseumUniversity of KansasLawrenceUSA

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