Biodiversity & Conservation

, Volume 7, Issue 1, pp 97–107 | Cite as

Threatened species, a re-evaluation of the status of eight endemic plants of the Gala´pagos

  • ANDRE´ Mauchamp
  • IVAN Aldaz
  • EDWIN Ortiz
  • HUGO Valdebenito


Although still in relatively good condition, the Gala´pagos Archipelago suffers from increasing human pressures. Apart from direct actions like hunting and logging, endemic plants and animals are threatened by introduced species, and in many cases the present status of the populations is not known. The conservation status of eight plant species considered endangered was studied from literature and field surveys and the main threats were determined. Each of the eight species is endemic to only one island but in some cases is also present on nearby islets. Of these eight species, one is considered extinct, one critically endangered, and the others suffer various levels of threat. As in all island systems of the world, the main threats are introduced organisms, both plants and animals. The extinct species probably disappeared owing to invasion by Lantana camara, one of the most aggressively invasive plants of the islands, and the most endangered species is threatened by goats. The remaining species seem to be regenerating well and we can expect positive results from protection efforts. Today, only one of the eight species benefits from a direct protection action.

Island biology introduced species Galá pagos conservation endangered plants 


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  1. Adsersen, H. (1980) Revision of the Galá pagos endemic genus Lecocarpus (Asteraceae). Botanical Tidsskrift 75, 63–76.Google Scholar
  2. Adsersen, H. (1989) The rare plants of the Galá pagos Islands and their conservation. Biol. Cons. 47, 49–77.Google Scholar
  3. Adsersen, H. (1990) Intra archipelago distribution patterns of vascular plants in Galá pagos. In Botanical Research and Management in Galápagos (J.E. Lawesson, O. Hamann, G. Rogers and H. Ochoa, eds) pp. 67–78. Monography in Systematic and Botany of the Missouri Botanical Garden number 32.Google Scholar
  4. Batianoff, G.N. and Burgess, R. (1993) Problems in the documentation of rare plants-the Australian experience. Biodiv. let. 1, 168–71.Google Scholar
  5. Brockie, R.E., Loope, L.L., Usher, M.B. and Hamann, O. (1988) Biological invasions of island nature reserves. Biol. Conserv. 44, 9–36.Google Scholar
  6. Eliasson, U. (1968) Studies in Galá pagos plants VII. On some new or otherwise noteworthy plants from the archipelago. Botaniska Notiser 121, 630–40.Google Scholar
  7. Eliasson, U. (1974) Studies in Galá pagos plants XIV. The genus Scalesia. Opera Botanica 36, 1–117.Google Scholar
  8. Grant, P.R. (1986) Ecology and Evolution of Darwin's Finches. Princeton University Press, Princeton, New Jersey.Google Scholar
  9. Hamann, O. (1979) Regeneration of vegetation on Santa Fé and Pinta islands, Galápagos, after the eradication of goats. Biol. Conserv. 15, 215–36.Google Scholar
  10. Hamann, O. and Wium-Andersen, S. (1984) Scalesia gordilloi sp.nov. (Asteraceae) from the Galápagos islands, Ecuador. Nordic J. Bot. 6, 35–8.Google Scholar
  11. Harris, M.P. (1984) The seabirds. In Key Environments. Galápagos (R. Perry, ed.) pp. 191–206. Pergamon Press, Oxford.Google Scholar
  12. Hoeck, H.N. (1984) Introduced fauna. In Key Environments. Galápagos (R. Perry, ed.) pp. 233–45. Pergamon Press, Oxford.Google Scholar
  13. Hooker, J.D. (1847) On the vegetation of the Galá pagos archipelago, as compared with that of some other tropical islands and of the continent of America. Transactions of the Linnean Society 20, 235–67.Google Scholar
  14. IUCN (1994) IUCN red list categories. Prepared by the IUCN Species Survival Commission. Gland, Switzerland.Google Scholar
  15. Lawesson, J.E., Adsersen, H. and Bentley, P. (1987) An Updated and Annotated Check List of the Vascular Plants of the Galá pagos Islands. Reports from the Botanical Institute, University of Aarhus, No. 16. 74 pp.Google Scholar
  16. Lawesson, J.E. (1990) Threatened plant species and priority plant conservation sites in the Galápagos islands. In Botanical Research and Management in Galápagos (J.E. Lawesson, O. Hamann, G. Rogers and H. Ochoa, eds) pp. 153–68. Monograph in Systematic and Botany of the Missouri Botanical Garden Number 32.Google Scholar
  17. Loope, L.L., Hamann, O. and Stone, C.P. (1988) Comparative conservation biology of oceanic archipelagos. Hawaii and the Galá pagos. BioScience 38, 272–82.Google Scholar
  18. MacDonald, I.A.W., Thébaud, C., Strahm, W.A. and Strasberg, D. (1991) Effects of alien plant invasions on native vegetation remnants on La Réunion (Mascarene islands, Indian Ocean). Environ. Conserv. 18, 51–61.Google Scholar
  19. Mauchamp, A. (1997) Threats from alien plant species in the Galá pagos Islands. Conservation Biology, 11, 260–263.Google Scholar
  20. McBirney, A.R. and Williams, H. (1969) Geology and Petrology of the Galápagos Islands. The Geological Society of America, memoir 118.Google Scholar
  21. McMullen, C.K. (1987) Breeding systems of selected Galá pagos islands angiosperms American J. Bot. 74, 1694–705.Google Scholar
  22. North, S.G., Bullock, D.J. and Dulloo, M.E. (1994) Changes in the vegetation and reptile populations on round island, Mauritius, following eradication of rabbits. Biol. Cons. 67, 21–8.Google Scholar
  23. Parkes, J.P. (1990) Eradication of feral goats on islands and habitat islands. J. Royal Soc. New Zealand 20, 297–304.Google Scholar
  24. Pimm, S.L. (1987) Determining the effect of introduced species. TREE 4, 106–8.Google Scholar
  25. Porter, D.M. (1976) Geography and dispersal of Galá pagos islands vascular flora. Nature 264, 745–6.Google Scholar
  26. Schofield, E.K. (1989) Effects of introduced plants and animals on island vegetation: examples from the Galá pagos archipelago. Cons. Biol. 3, 227–38.Google Scholar
  27. Simberloff, D. (1995) Why do introduced species appear to devastate islands more than mainland areas? Pacific Sci. 49, 87–97.Google Scholar
  28. Snell, H.M., Stone, P.A. and Snell, H.L. (1996) A summary of geographical characteristics of the Galá pagos islands. J. Biogeography 23, 619–624.Google Scholar
  29. Soulé, M.E. (ed.) (1987) Viable Populations for Conservation. Cambridge: Cambridge University Press.Google Scholar
  30. Stone, C.P. and Stone, D.B. (eds) (1989) Conservation Biology in Hawaii. Honolulu: University of Hawaii Press.Google Scholar
  31. Stuessy, T.F., Marticorena, C., Rodriguez, R., Crawford, D.J. and Silva, O.M. (1991) Endemism in the vascular flora of the Juan Fernandez Islands. Aliso 13, 297–307.Google Scholar
  32. Towns, D.R., Daugherty, C.H. and Atkinson, I.A.E. (eds) (1990) Ecological Restoration of New Zealand Islands. Conservation sciences publication 2, Wellington, New Zealand.Google Scholar
  33. Tye, A. (1997) Rediscovery of an “extinct” endemic plant-the Floreana flax linum cratericola. Noticias de Galápagos 58, 3–4.Google Scholar
  34. Wagner, W.L., Herbst, D.R. and Sohmer, S.H. (1990) Manual of the Flowering Plants of Hawaii. Honolulu, Hawaii: University of Hawaii Press and Bishop Museum Press (Special publication 83).Google Scholar

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • ANDRE´ Mauchamp
    • 1
  • IVAN Aldaz
    • 1
  • EDWIN Ortiz
    • 1
  • HUGO Valdebenito
    • 1
  1. 1.Charles Darwin Research Station, Gala´pagosQuitoEcuador

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