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Habitat fragmentation, species diversity, extinction, and design of nature reserves

  • George R. Robinson
  • James F. Quinn
Part of the Monographiae Biologicae book series (MOBI, volume 67)

Abstract

We review theories commonly offered to predict the consequences of habitat fragmentation for community- and population-level diversity, and their potential use in conservation strategies. Exploring community-level effects of habitat subdivision, we demonstrate why island biogeography theory is not applicable to the problem of determining the best reserve size for maximum diversity. Evidence from field studies and experiments tends to argue for higher levels of diversity with some moderate degree of habitat subdivision, provided that the amount of total habitat area, whether intact or subdivided, is the same. We examine the relationship between population subdivision and extinction. In theory, large populations are resistant to extinction due to demographic or genetic stochasticity, whereas population subdivision permits escape from chance environmental threats. It follows that a conservation advantage might be gained from preserving multiple populations, depending on the relative importance of different extinction mechanisms in nature. Empirical evidence for this is mixed, varying among different organisms in different habitats. We conclude that strategies emphasizing reserve size to the exclusion of other concerns are not well supported.

Keywords

Nature Reserve Habitat Fragmentation Small Island Extinction Rate Large Island 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

  1. Armstrong, R. A. 1976. Fugitive species: experiments with fungi and some theoretical considerations. Ecology, 57: 953–963.Google Scholar
  2. Begon, M., J. L. Harper, and C. R. Townsend. 1986. Ecology. Sinauer, Sunderland, Massachusetts.Google Scholar
  3. Belovsky, G. E. 1987. Extinction models and mammalian persistence. In: M. E. Soulé (ed.), Viable populations for conservation. Cambridge University Press, Cambridge, pp. 33–57.Google Scholar
  4. Boecklen, W. J. 1986. Optimal design of nature reserves: consequences of genetic drift. Biol. Conserv. 38: 323–338.Google Scholar
  5. Boecklen, W. J. and N. J. Gotelli. 1984. Island biogeography theory and conservation practice: species-area or specious-area relationships? Biol. Conserv. 29: 63–80.Google Scholar
  6. Boecklen, W. J. and D. S. Simberloff. 1986. Area-based extinction models in conservation. In: D. K. Elliot (ed.), Dynamics of Extinction. Wiley-Interscience, New York, pp. 247–276.Google Scholar
  7. Brown, J. H. and A. Kodric-Brown. 1977. Turnover rates in insular biogeography: Effect of immigration on extinction. Ecology 58: 445–449.Google Scholar
  8. Cade, T. J. 1988. Using science and technology to reestablish species lost in nature. In: E. O. Wilson (ed.), Biodiversity. National Academy Press, Washington, D.C., pp. 279–288.Google Scholar
  9. Case, T. J. and M. L. Cody. 1983. Synthesis: pattern and processes in island biogeography. In: T. J. Case and M. L. Cody (eds.) Island Biogeography in the Sea of Cortez. Univ. of California Press, Berkeley, pp. 307–341.Google Scholar
  10. Caswell, H. 1978. Predator-mediated coexistence: A non-equilibrium model. Amer. Nat. 112: 127–154.Google Scholar
  11. Connor, E. F. and E. D. McCoy. 1979. The statistics and biology of the species-area relationship. American Naturalist 113: 791–833.Google Scholar
  12. Cook, R. R., J. F. Quinn, and C. van Riper III. 1990. A comparative analysis of mammalian inventory data for California’s National Parks. In: C. van Riper III, T. J. Stohlgren, S. D. Viers, Jr. and S. C. Hillyer (eds.), Examples of Resource Inventory and Monitoring in National Parks of California. U.S. Dept. of the Interior, National Park Service, Washington, D.C., pp. 71–101.Google Scholar
  13. Darwin, C. 1859. The Origin of Species. Harvard University Press, Cambridge. Mass. (1966 edition).Google Scholar
  14. DeAngelis, D. L. and J. C. Waterhouse. 1987. Equilibrium and nonequilibrium concepts in ecological models. Ecol. Monogr. 57:1–21.Google Scholar
  15. Diamond, J. M. 1975a. The island dilemma: lessons of modern biogeographic studies for the design of natural reserves. Biol. Conserv. 7:129–146.Google Scholar
  16. Diamond, J. M. 1975b. Assembly of communities. In: Cody, M. L. and J. M. Diamond, (eds.), Ecology and Evolution of Communities. Harvard University Press, Cambridge, Massachusetts, pp. 342–444.Google Scholar
  17. Diamond, J. M. 1976. Island biogeography and conservation: strategy and limitations. Science 193:1027–1029.Google Scholar
  18. Diamond, J. M. 1984. “normal” extinction of isolated populations. In: M. H. Nitecki (ed.), Extinctions. University of Chicago Press, pp. 191–246.Google Scholar
  19. Dickerson, J. E., Jr. and J. V. Robinson. 1986. The controlled assembly of microcosmic communities: The selective extinction hypothesis. Oecologia 71: 12–17.Google Scholar
  20. Ewens, W. J., P. J. Brockwell, J. M. Gani and S. I. Resnick. 1987. Minimum viable population size in the presence of catastrophes. In: M.E. Soulé (ed.), Viable Populations for Conservation. Cambridge University Press, Cambridge, pp. 59–68.Google Scholar
  21. Forney, K. A. and M.E. Gilpin. 1989. Spatial structure and population extinction: A study with Drosophila flies. Conservation Biology 3: 45–51.Google Scholar
  22. Frankel, O. H. 1974. Genetic conservation: our evolutionary responsibility. Genetics 78: 53–65.PubMedGoogle Scholar
  23. Frankel, O. H. and M.E. Soulé. 1981. Conservation and Evolution. Cambridge University Press, New York.Google Scholar
  24. Franklin, I.A. 1980. Evolutionary change in small populations. In: M.E. Soulé and B.A. Wilcox (eds.) Conservation Biology: An Evolutionay-Ecological Perspective. Sinauer, Sunderland, Mass. pp. 135–149.Google Scholar
  25. Game, M. and G. F. Peterkin. 1984. Nature reserve selection strategies in the woodlands of central Yorkshire. Biol. Conserv. 29:157–181.Google Scholar
  26. Gilbert, L. E. 1980. Food web organization and the conservation of neotropical diversity. In: M. E. Soulé and B. A. Wilcox (eds.), Conservation Biology: An Evolutionary-Ecological Perspective. Sinauer, Sunderland, Massachusetts, pp. 11–33.Google Scholar
  27. Gilpin, M. E. and J. M. Diamond. 1980. Subdivision of nature reserves and the maintenance of species diversity. Nature 285: 567–568.Google Scholar
  28. Goodman, D. 1987. The demography of chance extinction. In: M.E. Soulé (ed.), Viable Populations for Conservation. Cambridge University Press, Cambridge, pp. 11–34.Google Scholar
  29. Harris, L. D. 1984. The Fragmented forest. University of Chicago Press, Chicago.Google Scholar
  30. Hanski, I. and E. Ranta. 1983. Coexistence in a patchy environment: three species of Daphnia in rock pools. J. Animal Ecol. 52: 263–279.Google Scholar
  31. Hastings, A. 1980. Disturbance, coexistence, history and competition for space. Theor. Pop. Biol. 18:363–373.Google Scholar
  32. Higgs, A. J. and M.B. Usher. 1980. Should nature reserves be large or small? Nature 120: 41–50.Google Scholar
  33. Hope, J. H. 1973. Mammals of the Bass Straight Islands. Proc. Royal Soc. Viet. 85:163–196.Google Scholar
  34. Hubbell, S. P. 1979. Tree dispersion, abundance, and diversity in a tropical dry forest. Science 203:1299–1309.Google Scholar
  35. Huffaker, C. B. 1958. Experimental studies on predation: dispersion factors and predator-prey oscillation. Hilgardia 27: 243–283.Google Scholar
  36. Huffaker, C. B., K. P. Shea and S. G. Herman. 1963. Experimental studies on predation. Hilgardia 34: 305–330.Google Scholar
  37. IUCN. 1980. World Conservation Strategy. International Union for Conservation of Nature and Natural Resources. Gland, Switzerland.Google Scholar
  38. Janzen, D. H. 1983. No park is an island: increase in interference from outside as park size decreases. Oikos: 41: 420–410.Google Scholar
  39. Janzen, D. H. 1986. The eternal external threat. In: M. E. Soulé (ed.) Conservation Biology: The Science of Scarcity and Diversity. Sinauer, Sunderland, Massachusetts, pp. 286–303.Google Scholar
  40. Jarvinen, O. 1982. Conservation of endangered plant populations: single large or several small reserves? Oikos 42: 396–398.Google Scholar
  41. Karieva, P. 1987. Habitat fragmentation and the stability of predator-prey interactions. Nature 326: 388–390.Google Scholar
  42. Lack, D. L. 1976. Island Biogeography, Illustrated by the Land Birds of Jamaica. Blackwell, Oxford, England.Google Scholar
  43. Lahti, T. and E. Ranta. 1985. The SLOSS principle and conservation practice: an example. Oikos 44: 369–370.Google Scholar
  44. Lande, R. 1987. Extinction thresholds in demographic models of territorial populations. Amer. Nat. 130:624–635.Google Scholar
  45. Lande, R. 1988. Genetics and demography in biological conservation. Science 241: 1455–1459.PubMedGoogle Scholar
  46. Lande, R. and G. F. Barrowclough. 1987. Effective population size, genetic variation, and their use in population management. In: M. E. Soulé (ed.), Viable Populations for Conservation. Cambridge University Press, Cambridge, pp. 87–123.Google Scholar
  47. Leigh, E. G., Jr. 1981. The average lifetime of a population. J Theor. Biol. 90: 213–239.PubMedGoogle Scholar
  48. Levin, S. A. 1974. Dispersion and population interactions. Amer. Nat. 100: 207–225.Google Scholar
  49. Levin, S. A. 1976. Population dynamic models in heterogeneous environments. Annual Review of Ecology and Systematics, 7: 287–310.Google Scholar
  50. Lovejoy, T. E. and D. C. Oren. 1981. The minimum critical size of ecosystems. In: R. L. Burgess and D. M. Sharpe (eds.), Forest Island Dynamics in Man-dominated Landscapes. Springer-Verlag, New York, pp. 7–12.Google Scholar
  51. Lovejoy, T. E., J. M. Rankin, R. O. Bierregard, Jr., K. S. Brown, Jr., L. A. Emmons and M. E. Van der Voort. 1984. Ecosystem decay of Amazon forest remnants. In: M. H. Nitecki, (ed.) Extinctions. University of Chicago Press, Chicago, pp. 295–326.Google Scholar
  52. Lovejoy, T. E., R. O. Bierregard, Jr., A. B. Rylands, J. R. Malcolm, C.E. Quintela, L. H. Harper, K. S. Brown, Jr., A. H. Powell, G. V. N. Powell, H. O. R. Schubart and M. B. Hays. 1986. Edge and other effects of isolation on Amazon Forest fragments. In: M. E. Soulé (ed.) Conservation Biology: The Science of Scarcity and Diversity. Sinauer, Sunderland, Massachusetts, pp. 257–285.Google Scholar
  53. Mac Arthur, R. H. and E. O. Wilson. 1967. The Theory of Island Biogeography. Princeton University Press, New York.Google Scholar
  54. Margules, C. R. 1989. Introduction to some Australian developments in conservation evaluation. Biol. Conserv. 50:1–11.Google Scholar
  55. May, R. M. 1975. Island biogeography and the design of wildlife preserves. Nature 254: 177–178.Google Scholar
  56. Mayr, E. 1963. Animal Species and Evolution. Harvard University Press, Cambridge, Mass.Google Scholar
  57. McLellan, C.H., A. P. Dobson, D. S. Wilcove and J. F. Lynch. 1986. Effects of forest fragmentation on new-and old-world bird communities: empirical observations and theoretical implications. In: J. Verner, M. L. Morrison and C. J. Ralph (eds.), Wildlife 2000. Univ. of Wisconsin Press, Madison, pp. 305–313.Google Scholar
  58. Newmark, W. D. 1986. Ph.D. Dissertation, School of Natural Resources, University of Michigan.Google Scholar
  59. Newmark, W. D. 1987. A land-bridge island perspective on mammalian extinctions in Western North American parks. Nature 325: 430–432.PubMedGoogle Scholar
  60. Nilsson, S. G. 1986. Are bird communities in small biotype patches random samples from communities in large patches? Biol. Conserv. 38:179–204.Google Scholar
  61. Osman, R. W. 1978. The establishment and development of a marine epifaunal community. Ecol. Monogr. 47: 37–63.Google Scholar
  62. Olson, S. L. and James, H. F. 1982. Fossil birds from the Hawaiian Islands: evidence for wholesale extinctions by man before Western contact. Science 217: 633–635.Google Scholar
  63. Paine, R. T. 1988. Habitat suitability and local population persistence of the sea palm Postelsia palmaeformis. Ecology 69:1787–1794.Google Scholar
  64. Patterson, B. D. and W. Atmar. 1986. Nested subsets and the structure of insular mammalian faunas in archipelagos. Biol. J. Linn. Soc. 28: 65–82.Google Scholar
  65. Patterson, B. D. 1988. The principle of nested subsets and its implications for biological conservation. Conserv. Biol. 1: 323–334.Google Scholar
  66. Pickett, S. T. A. and J. N. Thompson. 1978. Patch dynamics and the design of nature reserves. Biol. Conserv. 13: 27–37.Google Scholar
  67. Pickett, S. T. A. and P. White. 1985. The Ecology of Natural Disturbance and Patch Dynamics. Academic Press, Orlando, Florida.Google Scholar
  68. Polovko, A. M. 1968. Fundamentals of Reliability Theory. Academic Press, New York.Google Scholar
  69. Preston, F. W. 1960. Time and space and the variation of species. Ecology 41: 611–627.Google Scholar
  70. Quinn, J. F. 1990. Extinction rates and species richness of mammals in western North American parks. Biol. Conserv. (in press).Google Scholar
  71. Quinn, J. F. and S. P. Harrison. 1988. Effects of habitat fragmentation and isolation on species richness: evidence from biogeographic patterns. Oecologia 75: 132–140.Google Scholar
  72. Quinn, J. F. and A. Hastings. 1987. Extinction in subdivided habitats. Conserv. Biol. 1: 198–208.Google Scholar
  73. Quinn, J. F., M. L. Judge and C. L. Wolin. 1989. An experimental analysis of patch size, habitat subdivision, and extinction in a marine intertidal snail. Conserv. Biol. 3: 242–251.Google Scholar
  74. Quinn, J. F., C. van Riper, III and H. Salwasser. 1990. Mammalian extinctions from national parks in the western United States. Ecology (in press).Google Scholar
  75. Quinn, J. F. and G. R. Robinson. 1987. The effects of experimental subdivision on flowering plant species diversity in a California annual grassland. J. Ecol. 75: 837–856.Google Scholar
  76. Richter-Dyn, N. and N. S. Goel. 1972. On the extinction of a colonizing species. Theor. Pop. Biol. 3: 406–433.Google Scholar
  77. Ricklefs, R. E. 1979. Ecology. Chiron Press, New York.Google Scholar
  78. Roberts, L. 1988. Hard choices on biodiversity. Science 241: 1759–1761.Google Scholar
  79. Robinson, G. R. and J. F. Quinn. 1988. Extinction, turnover and species diversity in an experimentally fragmented California annual grassland. Oecologia (Berlin) 76: 71–82.Google Scholar
  80. Salwasser, H. 1987. Spotted owls: turning a battleground into a blueprint. Ecology 68: 776–779.Google Scholar
  81. Schonewald-Cox, CM., S. M. Chambers, F. MacBryde and L. Thomas (eds.) 1983. Genetics and Conservation: A Reference for Managing Wild Animal and Plant Populations. Benjamin/Cummings, Menlo Park, Calif.Google Scholar
  82. Schoener, T. W. 1974. The species-area relationship within archipelagos: Models and evidence from land birds. Proc. 16th Int. Ornith. Congr., 629–642.Google Scholar
  83. Schoener, T. W. and A. Schoener. 1983. The time to extinction of a colonizing propagule of lizards increases with island area. Nature 302: 332–334.Google Scholar
  84. Shaffer, M. L. 1981. Minimum population sizes for species conservation. BioScience 31: 131–134.Google Scholar
  85. Shaffer, M. L. and F. B. Samson. 1985. Population size and extinction: a note determining critical population size. Amer. Nat. 125:144–152.Google Scholar
  86. Simberloff, D. 1976. Experimental zoogeography of islands: Effects of island size. Ecology 57: 629–648.Google Scholar
  87. Simberloff, D. 1987. The spotted owl fracas: Mixing academic, applied and political ecology. Ecology 68: 766–772.Google Scholar
  88. Simberloff D. and L. G. Abele. 1976. Island Biogeography theory and conservation practice. Science 191: 285–286.Google Scholar
  89. Simberloff, D. S. and L. G. Abele. 1982. Refuge design and island biogeography theory: Effects of fragmentation. Amer. Nat. 120:41–50.Google Scholar
  90. Simberloff, D. and J. Cox. 1987. Consequences and costs of conservation corridors. Conserv. Biol. 1:63–71.Google Scholar
  91. Simberloff, D. and N. Gotelli. 1984. Effects of insularization on plant species richness in the prairie-forest ecotone. Biol. Conserv. 29: 27–46.Google Scholar
  92. Slatkin, M. 1974. Competition and regional coexistence. Ecology 55:128–134.Google Scholar
  93. Soulé, M. E. 1980. Thresholds for survival: maintaining fitness and evolutionary potential. In: M. E. Soulé and B. A. Wilcox (eds.), Conservation Biology: An Evolutionary-Ecological Perspective. Sinauer, Sunderland, Mass., pp. 151–169.Google Scholar
  94. Soulé, M. E. (ed.) 1986. Conservation Biology: The Science of Scarcity and Diversity. Sinauer, Sunderland, Mass.Google Scholar
  95. Soulé, M. E. (ed.) 1987. Viable Populations for Conservation. Cambridge University Press, CambridgeGoogle Scholar
  96. Soulé, M. E. and D. Simberloff. 1986. What do genetics and ecology tell us about the design of nature reserves? Biol. Conserv. 29:19–40.Google Scholar
  97. Soulé, M. E. and B. A. Wilcox (eds.) 1980. Conservation Biology: An Evolutionary-Ecological Perspective. Sinauer, Sunderland, Mass.Google Scholar
  98. Soulé, M. E., B. A. Wilcox and C. Holtby. 1979. Benign neglect: A model of faunal collapse in the game reserves of East Africa. Biol. Conserv. 15: 295–272.Google Scholar
  99. Soulé, M. E., D. T. Bolger, A. G. Alberts, R. Sauvajot, J. Wright, M. Sorice, and S. Hill. 1988. Reconstructed dynamics of rapid extinctions of chaparral-requiring birds in urban habitat islands. Conserv. Biol. 2: 75–92.Google Scholar
  100. Sullivan, A. L. and M. L. Shaffer. 1975. Biogeography of the megazoo. Science. 189:13–17.Google Scholar
  101. Sutherland, J. P. 1974. Multiple stable points in natural communities. Amer. Nat. 108: 859–873.Google Scholar
  102. Templeton, A. R. 1986. Coadaptation and outbreeding depression. In: M. E. Soulé (ed.), Conservation Biology: The Science of Scarcity and Diversity. Sinauer, Sunderland, Mass, pp. 182–204.Google Scholar
  103. Terborgh, J. 1975. Faunal equilibria and the design of wildlife preserves. In: F. B. Golley and E. Medina (eds.), Tropical Ecological Systems: Trends in Terrestrial and Aquatic Research. Springer, New York, pp. 369–380.Google Scholar
  104. Terborgh, J. 1976. Island biogeography and conservation: strategy and limitations. Science 193:1029–1030.Google Scholar
  105. Terborgh, J., J. Faaborg, and H. F. Brockmann. 1978. Island colonization by Lesser Antillean birds. The Auk 95: 59–72.Google Scholar
  106. Thiebodeau, F. R. 1983. Endangered species: Deciding which species to save. Environ. Mgmt. 7:101–107.Google Scholar
  107. Western, D. and J. Ssemakula. 1981. The future of savannah ecosystems: ecological islands or faunal enclaves? Afr. J. Ecol. 19: 7–19.Google Scholar
  108. Whitcomb, R. F., J. F. Lynch, P. A. Opler and C. S. Robbins. 1976. Island biogeography theory and conservation: strategies and limitations. Science 193:1030–1032.Google Scholar
  109. Whitcomb, R.F., C. S. Robbins, J.F. Lynch, B.L. Whitcomb, M.K. Klimkiewicz and D. Bystrak. 1981. Effects of forest fragmentation on avifauna of the eastern deciduous forest. In: R. L. Burgess and D. M. Sharpe, (eds.) Forest Island Dynamics in Man-dominated Landscapes. Springer-Verlag, New York, pp. 125–205.Google Scholar
  110. Wilbur, H. M. and J. T. Travis. 1984. An experimental approach to understanding pattern in natural communities. In: D. R. Strong, D. Simberloff, L. G. Abele and A. B. Thistle (eds.), Ecological Communities: Conceptual Issues and the Evidence. Princeton University Press, Princeton, New Jersey, pp. 113–122.Google Scholar
  111. Wilcox, B. A. 1980. Insular ecology and conservation. In: M. E. Soulé and B. A. Wilcox (eds.), Conservation Biology: An Evolutionary-Ecological Perspective. Sinauer, Sunderland, Mass, pp. 95–117.Google Scholar
  112. Wilcox, B. A. and D. D. Murph. 1985. Conservation strategy: The effects of fragmentation on extinction. Amer. Nat. 125: 879–887.Google Scholar
  113. Wilson, E.O. and E. O. Willis. 1975. Applied biogeography. In: M. L. Cody and J.M. Diamond (eds.), Ecology and Evolution of Communities. Harvard University Press, Cambridge, Massachusetts, pp. 522–534.Google Scholar
  114. Wright, S. 1970. Random drift and the shifting balance theory of evolution. In: K. Kojima (ed.), Mathematical Topics in Population Genetics. Springer-Verlag. Berlin, pp. 1–31.Google Scholar
  115. Wright, S. J. and S. P. Hubbell. 1983. Stochastic extinction and reserve size: A focal species approach. Oikos 41: 466–476.Google Scholar
  116. Zimmerman, B. L. and R. O. Bierregaard. 1986. Relevance of the equilibrium theory of island biogeography and species-area relations to conservation with a case from Amazonia. J. Biogeog. 13:133–143.Google Scholar

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • George R. Robinson
    • 1
  • James F. Quinn
    • 2
  1. 1.Department of BotanyUniversity of CaliforniaDavisUSA
  2. 2.Division of Environmental StudiesUniversity of CaliforniaDavisUSA

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