Biodiversity & Conservation

, Volume 7, Issue 11, pp 1407–1416

Threatened species in a vanishing habitat: plants and invertebrates in calcareous grasslands in the Swiss Jura mountains

  • Jari Niemelä
  • Bruno Baur
Article

Abstract

We examined the diversity of vascular plants, butterflies, grasshoppers, gastropods and carabid beetles in three calcareous grasslands in the northwestern Swiss Jura mountains, a habitat type that has decreased dramatically during the recent decades. As many as 58 species (ca 22%) of the 266 collected are listed as threatened in northern Switzerland. The number of threatened species ranged from 27 to 49 per site, and 26 species occurred in only one of the three grasslands. The species richness of butterflies and vascular plants correlated positively among the grasslands, while the species richness of other groups did not covary. An index of complementarity indicated that the species compositions (including non-threatened species, and spiders and oribatid mites) of the groups varied greatly among the grasslands. In addition, herbivorous groups were more widely distributed than predators among the three grasslands. Due to this variation in species composition none of the three sites c an substitute for the others, if the biodiversity of these grasslands is to be maintained. Furthermore, the taxonomic groups studied are poor indicators of each others' diversity. Consequently, we support the ‘shopping basket’ approach to conservation evaluation, i.e. measuring species richness, species composition and complementarity of several groups instead of just one.

species diversity threatened species indicator species calcareous grassland Switzerland 

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References

  1. Baur, B., Joshi, J., Schmid, B., Hänggi, A., Borcard, D., Starý, J., Pedroli-Christen, A., Thommen, G.H., Luka, H., Rusterholz, H-P., Oggier, P., Ledergerber, S. and Erhardt, A. (1996) Variation in species richness of plants and diverse groups of invertebrates in three calcareous grasslands of the Swiss Jura mountains. Rev. Suisse Zool. 103, 1–33.Google Scholar
  2. Brown, K.S. (1997) Diversity, disturbance, and sustainable use of Neotropical forests: insects as indicators for conservation monitoring. J. Insect Conserv. 1, 25–42.Google Scholar
  3. Colwell, R.K. and Coddington, J.A. (1994) Estimating terrestrial biodiversity through extrapolation. Phil. Trans. R. Soc. Lond. B 345, 101–18.Google Scholar
  4. di Castri, F., Robertson Vernhes, J. and Younès, T. (1992) Inventorying and monitoring biodiversity. Biol. Int. 27, 1–27.Google Scholar
  5. Duelli, P. (ed.) (1994) Rote Listen der gefährdeten Tierarten in der Schweiz. Bern: Bundesamt für Umwelt, Wald und Landschaft.Google Scholar
  6. Ellenberg, H. (1988) Vegetation Ecology of Central Europe. Cambridge: Cambridge University Press.Google Scholar
  7. Erhardt, A. and Thomas, J.A. (1991) Lepidoptera as indicators of change in the semi-natural grasslands of lowland and upland Europe. In The Conservation of Insects and their Habitats (N.M. Collins and J.A. Thomas, eds) pp. 213–36. London: Academic Press.Google Scholar
  8. Fischer, M. and Stöcklin, J. (1997) Local extinctions of plants in remnants of extensively used calcareous grasslands 1950-86. Conserv. Biol. 11, 727–37.Google Scholar
  9. Gaston, K. (1996) Species richness: measure and measurement. In Biodiversity: a Biology of Numbers and Difference (K. Gaston, ed.) pp. 77–113. Oxford: Blackwell Science.Google Scholar
  10. Hammond, P. (1994) Practical approaches to the estimation of the extent of biodiversity in speciose groups. Phil. Trans. R. Soc. Lond. B 345, 119–36.Google Scholar
  11. Hanski, I., Kuussaari, M. and Nieminen, M. (1994) Metapopulation structure and migration in the butterfly Melitaea cinxia. Ecology 75, 747–62.Google Scholar
  12. Hanski, I., Pakkala, T., Kuussaari, M. and Lei, G. (1995) Metapopulation persistence of an endangered butterfly in a fragmented landscape. Oikos 72, 21–8.Google Scholar
  13. Kremen, C. (1992) Assessing the indicator properties of species assemblages for natural areas monitoring. Ecol. Appl. 2, 203–17.Google Scholar
  14. Kremen, C., Colwell, R.K., Erwin, T.L., Murphy, D.D., Noss, R.F. and Sanjayan, M. A. (1993) Terrestrial arthropod assemblages: their use in conservation planning. Conserv. Biol. 7, 796–808.Google Scholar
  15. Kremen, C., Merenlender, A.M. and Murphy, D.D. (1994) Ecological monitoring: a vital need for integrated conservation and development programs in the tropics. Conserv. Biol. 8, 388–97.Google Scholar
  16. Landolt, E. (1991) Rote Liste. Gefährdung der Farn-und Blütenpflanzen in der Schweiz. Bern: Bundesamt für Umwelt, Wald und Landschaft.Google Scholar
  17. Launer, A.E. and Murphy, D.D (1994) Umbrella species and the conservation of habitat fragments: a case of a threatened butterfly and a vanishing grassland ecosystem. Biol. Conserv. 69, 145–53.Google Scholar
  18. Lawton, J.H., Bignell, D.E., Bolton, B., Bloemers, G.F., Eggleton, P., Hammond, P.M., Hodda, M., Holt, R.D., Larsen, T.B., Mawdsley, N.A., Stork, N.E., Srivastava, D.S. and Watt, A.D. (1998) Biodiversity inventories, indicator taxa and effects of habitat modification in tropical forest. Nature 391, 72–6.Google Scholar
  19. New, T. (1997) Are Lepidoptera an effective ‘umbrella group’ for biodiversity conservation? J. Insect Conserv. 1, 5–12.Google Scholar
  20. Noss, R.F. (1990) Indicators for monitoring biodiversity: a hierarchical approach. Conserv. Biol. 4, 355–64.Google Scholar
  21. Oliver, I. and Beattie, A.J. (1996) Designing a cost-effective invertebrate survey: a test of methods for rapid assessment of biodiversity. Ecol. Appl. 6, 594–607.Google Scholar
  22. Pearson, D.L. and Cassola, F. (1992) World-wide species richness patterns of tiger beetles (Cole-optera: Cicindelidae): indicator taxon for biodiversity and conservation studies. Conserv. Biol. 6, 376–91.Google Scholar
  23. Samways, M. (1994) Insect Conservation Biology. London: Chapman and Hall.Google Scholar
  24. Wheeler, Q.D. and Cracraft, J. (1997) Taxonomic preparedness: are we ready to meet the biodiversity challenge? In Biodiversity II (M.L. Reaka-Kudla, D.E. Wilson and E.O. Wilson, eds) pp. 435–46. Washington, DC: Joseph Henry Press.Google Scholar
  25. Zoller, H., Wagner, C. and Frey, V. (1986) Nutzungsbedingte Veränderungen in Mesobromion-Halbtrockenrasen in der Region Basel–Vergleich 1950–1980. Abh. Westfäl. Mus. Naturk. 48, 93–107.Google Scholar

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Jari Niemelä
    • 1
  • Bruno Baur
    • 2
  1. 1.Department of Ecology and Systematics, Division of Population BiologyUniversity of HelsinkiFinland
  2. 2.Department of Integrative Biology, Section of Conservation Biology (NLU)University of BaselBaselSwitzerland

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