A Pragmatic Approach to the Management of Plant Invasions in Galapagos

  • Mark R. Gardener
  • Mandy Trueman
  • Chris Buddenhagen
  • Ruben Heleno
  • Heinke Jäger
  • Rachel Atkinson
  • Alan Tye
Chapter
Part of the Invading Nature - Springer Series in Invasion Ecology book series (INNA, volume 7)

Abstract

This chapter presents an overview of the process undertaken to understand alien plant invasions and work towards their effective management in the Galapagos Islands. Galapagos is a unique case study for the management of alien plants in protected areas because much the archipelago has few alien plants and the original ecosystems are relatively intact. We discuss a pragmatic approach developed over 15 years to help prioritise management of 871 plant species introduced to the islands. This approach includes understanding invasion pathways; identifying which species are present and their distribution; determining invasive species impact on biodiversity, ecosystem function and mutualisms; prioritising management using weed risk assessment; guidelines to prevent further introduction through quarantine and early intervention; and developing methods to control or eradicate priority species. Principal barriers to application of the approach are limited capacity and coordination among managers and inherent difficulties arising from invasive species traits such as seed banks and dispersal and their interactions with ecosystems. We also discuss the approach of managing invasive species individually and suggest it may be more appropriate, when feasible, for the relatively intact uninhabited islands and dry regions of Galapagos. The more degraded highlands of the inhabited islands need a more complex approach that balances costs with prioritised outcomes for biodiversity and ecosystem functionality.

Keywords

Impacts Islands Ecosystem function Mutualisms Weed risk assessment Priorities Quarantine Eradication 

References

  1. Aldaz I, Tye A (1999) Effects of the 1997–98 El Niño event on the vegetation of Alcedo Volcano, Isabela Island. Noticias de Galápagos 60:25–28Google Scholar
  2. Atkinson RJ, Guézou A, Rentería J et al (2009) Diagnostico y planificacion para el desarrollo de un agente de control biológico para Rubus niveus en las islas Galápagos. Fundacion Charles Darwin y Servicio Parque Nacional Galápagos, Puerto Ayora, GalapagosGoogle Scholar
  3. Atkinson R, Trueman M, Guézou A et al (2010) Native gardens for Galapagos – can community action prevent future plant invasions? In: Toral-Granda MV, Cayot L, Marin-Luna A (eds) Galapagos report 2009–2010. Charles Darwin Foundation, Galapagos National Park and Governing Council of Galapagos, Puerto Ayora, pp 159–163Google Scholar
  4. Bartuszevige AM, Gorchov DL (2006) Avian seed dispersal of an invasive shrub. Biol Invasion 8:1013–1022CrossRefGoogle Scholar
  5. Bensted-Smith R, Powell G, Dinerstein E (2002) Planning for the ecoregion. In: Bensted-Smith R (ed) A biodiversity vision for the Galapagos Islands. Charles Darwin Foundation and World Wildlife Fund, Puerto Ayora, pp 11–16Google Scholar
  6. Blake S, Wikelski M, Cabrera F et al (2012) Seed dispersal by Galápagos tortoises. J Biogeogr 39:1961–1972CrossRefGoogle Scholar
  7. Buddenhagen CE (2006) The successful eradication of two blackberry species Rubus megalococcus and R. adenotrichos (Rosaceae) from Santa Cruz Island, Galapagos, Ecuador. Pac Conserv Biol 12:272–278Google Scholar
  8. Buddenhagen CE, Jewell KJ (2006) Invasive plant seed viability after processing by some endemic Galapagos birds. Ornit Neotrop 17:73–80Google Scholar
  9. Buddenhagen CE, Rentería JL, Gardener M et al (2004) The control of a highly invasive tree Cinchona pubescens in Galapagos. Weed Technol 18:1194–1202CrossRefGoogle Scholar
  10. Calderón-Alvarez C, Causton CE, Hoddle MS et al (2012) Monitoring the effects of Rodolia cardinalis on Icerya purchasi populations on the Galapagos Islands. Biocontrol 57:167–179CrossRefGoogle Scholar
  11. Caley P, Kuhnert PM (2006) Application and evaluation of classification trees for screening unwanted plants. Aust Ecol 31:647–655CrossRefGoogle Scholar
  12. CBD (2002) Decision VI/23: alien species that threaten ecosystems, habitats or species to which is annexed. Guiding principles for the prevention, introduction and mitigation of impacts of alien species that threaten ecosystems, habitats or species. Sixth Conference of the Parties, 7–19 Apr 2002, The HagueGoogle Scholar
  13. CDF (2009) Charles Darwin Foundation collections database. Charles Darwin Foundation, Puerto Ayora, Galapagos. http://www.darwinfoundation.org/datazone/collections. Accessed 13 July 2009
  14. Chamorro S, Heleno R, Oslesen JM et al (2012) Pollination patterns and plant breeding systems in the Galápagos: a review. Ann Bot 110:1489–1501PubMedCrossRefGoogle Scholar
  15. Chapin FS, Starfield AM (1997) Time lags and novel ecosystems in response to transient climatic change in Alaska. Clim Change 35:449–461CrossRefGoogle Scholar
  16. Chimera C, Drake D (2010) Patterns of seed dispersal and dispersal failure in a Hawaiian dry forest having only introduced birds. Biotropica 42:493–502CrossRefGoogle Scholar
  17. Clark DA (1981) Foraging patterns of black rats across a desert-montane forest gradient in the Galapagos Islands. Biotropica 13:182–194CrossRefGoogle Scholar
  18. Coffey EED, Froyd CA, Willis KJ (2011) When is an invasive not an invasive? Macrofossil evidence of doubtful native plant species in the Galapagos Islands. Ecology 92:805–812PubMedCrossRefGoogle Scholar
  19. Congreso Nacional (1998) Ley de regimen especial para la conservacion y desarrollo sustentable de la provincia de Galápagos. Quito, Registro Oficial No 278, 18 de marzo, de, p 31Google Scholar
  20. Connett L, Guézou A, Herrera HW et al (in press) Gizzard contents of the Smooth-billed Ani, Crotophaga ani (L.), In: The Galapagos Islands Ecuador. Galap ResGoogle Scholar
  21. Daehler CC (2003) Performance comparisons of co-occuring native and alien invasive plants: implications for conservation and restoration. Annu Rev Ecol Evol Syst 34:183–211CrossRefGoogle Scholar
  22. Daehler CC, Carino DA (2000) Predicting invasive plants: prospects for a general screening system based on current regional models. Biol Invasion 2:93–102CrossRefGoogle Scholar
  23. Duffy D, Kraus F (2006) Science and the art of the solvable in Hawai‘i’s extinction crisis. Environ Hawaii 16:3–6 http://manoa.hawaii.edu/hpicesu/papers/2006_Science_and_the_Art.pdf. Accessed 15 Dec 2012Google Scholar
  24. Duffy JE, Carinale BJ, France KE et al (2007) The functional role of biodiversity in ecosystems: incorporating trophic complexity. Ecol Lett 10:522–538PubMedCrossRefGoogle Scholar
  25. Fowler LE, Johnson MK (1985) Diets of giant tortoises and feral burros on Volcan Alcedo, Galapagos. J Wildl Manage 49:165–169CrossRefGoogle Scholar
  26. García G, Gardener MR (2012) Evaluación de proyectos de control de plantas transformadores y reforestación de sitios de alta valor en Galápagos. Galapagos National Park and Charles Darwin Foundation, Puerto Ayora, Galapagos, EcuadorGoogle Scholar
  27. Gardener MR, Tye A, Wilkinson SR (1999) Control of introduced plants in the Galapagos Islands. In: Bishop AC, Boersma M, Barnes CD (eds) Proceedings from the twelfth Australian weeds conference, Hobart, pp 396–400Google Scholar
  28. Gardener M, Atkinson R, Rueda D et al (2010a) Optimizing restoration of the degraded highlands of Galapagos: a conceptual framework. In: Toral-Granda MV, Cayot L, Marin-Luna A (eds) Galapagos report 2009–2010. Charles Darwin Foundation, Galapagos National Park and Governing Council of Galapagos, Puerto Ayora, Galapagos, pp 164–169Google Scholar
  29. Gardener MR, Atkinson R, Rentería JL (2010b) Eradications and people: lessons from the plant eradication program in Galapagos. Restor Ecol 18:20–29CrossRefGoogle Scholar
  30. Genovesi P (2007) Limits and potentialities of eradication as a tool for addressing biological invasions. In: Nentwig W (ed) Biological invasions. Springer, Berlin, pp 385–402CrossRefGoogle Scholar
  31. Gordon DR, Onderdonk DA, Fox AM et al (2008) Consistent accuracy of the Australian weed risk assessment system across varied geographies. Divers Distrib 14:234–242CrossRefGoogle Scholar
  32. Grenier C (2007) Conservación contra natura, Las Islas Galápagos, 2nd edn, Travaux de l’Institut Francais d’Etudes Andines. Instituto Francés de Estudios Andinos (IFEA), LimaGoogle Scholar
  33. Guerrero AM, Tye A (2011) Native and introduced birds of Galapagos as dispersers of native and introduced plants. Ornit Neotrop 22:207–217Google Scholar
  34. Guézou A, Trueman M, Buddenhagen CE et al (2010) An extensive alien plant inventory from the inhabited areas of Galapagos. PLoS ONE 5:e10276PubMedCrossRefGoogle Scholar
  35. Gurevitch J, Padilla DK (2004) Are invasive species a major cause of extinctions? Trends Ecol Evol 19:470–474PubMedCrossRefGoogle Scholar
  36. Hamann O (1974) Contribution to the flora and vegetation of the Galapagos Islands III. Five new floristic records. Bot Notiser 127:309–316Google Scholar
  37. Hamann O (1985) The El Niño influence on the Galápagos vegetation. In: Robinson G, del Pino E (eds) El Niño in the Galápagos Islands: the 1982–1983 Event. Charles Darwin Foundation, Quito, pp 299–330Google Scholar
  38. Heleno R, Blake S, Jaramillo P et al (2011) Frugivory and seed dispersal in the Galápagos: what is the state of the art? Integr Zool 6:110–128PubMedCrossRefGoogle Scholar
  39. Heleno R, Ramos JA, Memmott J (2013a) Integration of exotic seeds into an Azorean seed dispersal network. Biol Invasion 15:1143–1154Google Scholar
  40. Heleno R, Olesen JM, Nogales M et al (2013b) Seed-dispersal networks in the Galápagos and the consequences of plant invasions. Proc R Soc B Biol Sci 280:20122112CrossRefGoogle Scholar
  41. Hooker JD (1851) On the vegetation of the Galapagos Archipelago. Trans Linn Soc Lond 20:235–262CrossRefGoogle Scholar
  42. Hosking JR, Waterhouse BM, Williams PA (2004) Are we doing enough about early detection of weed species naturalising in Australia. In: 14th Australian weeds conference: papers and proceedings. Weed management – balancing people, planet, profit. Weed Society of NSW, Wagga Wagga, New South Wales, p 718Google Scholar
  43. Hulme PE (2012) Weed risk assessment: a way forward or a waste of time? J Appl Ecol 49:10–19CrossRefGoogle Scholar
  44. INEC (2007) Difusión de resultados definitivos del censo de Población y Vivienda 2006. Instituto Nacional de Estadistica y Censos, QuitoGoogle Scholar
  45. INEC (2011) Instituto Nacional de Estadística y Censos 2010. http://www.inec.gov.ec/estadisticas. Accessed 2 Apr 2012
  46. IUCN (2011) The IUCN red list of threatened species. Version 2011.2. http://www.iucnredlist.org. Accessed 2 Apr 2012
  47. Jackson ST, Hobbs RJ (2009) Ecological restoration in the light of ecological history. Science 325:567–569PubMedCrossRefGoogle Scholar
  48. Jäger H, Kowarik I (2010) Resilience of native plant community following manual control of invasive Cinchona pubescens in Galápagos. Restor Ecol 18:103–112CrossRefGoogle Scholar
  49. Jäger H, Tye A, Kowarik I (2007) Tree invasion in naturally treeless environments: impacts of quinine (Cinchona pubescens) trees on native vegetation in Galápagos. Biol Conserv 140:297–307CrossRefGoogle Scholar
  50. Jäger H, Kowarik I, Tye A (2009) Destruction without extinction: long-term impacts of an invasive tree species on Galápagos highland vegetation. J Ecol 97:1252–1263CrossRefGoogle Scholar
  51. Jäger H, Alencastro MJ, Kaupenjohann M et al (2013) Ecosystem changes in Galápagos highlands by the invasive tree Cinchona pubescens. Plant Soil 371:629–640Google Scholar
  52. Jaramillo P, Guézou A (2012) CDF Checklist of Galapagos vascular plants. Charles Darwin Foundation. http://www.darwinfoundation.org/datazone/collections/. Accessed 9 Dec 2012
  53. Koop A, Fowler L, Newton L et al (2012) Development and validation of a weed screening tool for the United States. Biol Invasion 14:273–294CrossRefGoogle Scholar
  54. Landazuri O (2002) Distribución, fenología reproductiva y dinámica del banco de semillas de mora (Rubus niveus Thunb.) en la parte alta de la isla Santa Cruz, Galápagos. Universidad Central de Ecuador, Quito, EcuadorGoogle Scholar
  55. Lawesson JE, Ortiz L (1990) Plantas introducidas en las Islas Galapagos. In: Lawesson JE, Hamann O, Rogers G et al (eds) Botanical research and management in the Galapagos Islands. Monogr Syst Bot Missouri Bot Garden 32:201–211Google Scholar
  56. Lundh J (2006) The farm area and cultivated plants on Santa Cruz, 1932–1965, with remarks on other parts of Galapagos. Galapagos Res 64:12–25Google Scholar
  57. Luong TT, Toro B (1985) Cambios en la vegetación de las islas Galápagos durante “El Niño” 1982–1983. In: Robinson G, del Pino E (eds) El Niño in the Galápagos Islands: the 1982–1983 event. Charles Darwin Foundation, Quito, pp 331–342Google Scholar
  58. McMullen C (1989) The Galápagos carpenter bee, just how important is it? Noticias Galápagos 48:16–18Google Scholar
  59. McMullen CK (2009) Insular flora: more than “wretched-looking little weeds”. In: De Roy T (ed) Galápagos: preserving Darwin’s legacy. David Bateman Ltd, Albany, pp 60–66Google Scholar
  60. McMullen CK, Tye A, Hamann O (2008) Botanical research in the Galápagos Islands: the last fifty years and the next fifty. Galapagos Res 65:43–45Google Scholar
  61. McNeely JA (2001) The great reshuffling: human dimensions of invasive alien species. IUCN, GlandGoogle Scholar
  62. Millennium Ecosystem Assessment (2005) Ecosystems and human well-being: a synthesis. Island Press, Washington, DCGoogle Scholar
  63. Owen SJ (1998) Department of conservation strategic plan for managing invasive weeds. Department of Conservation, WellingtonGoogle Scholar
  64. Paige AR, Lacey KL (2006) Economic impact assessment of Australian weed biological control. CRC for Australian Weed Management Technical Series No. 10, Glen Osmond, AustraliaGoogle Scholar
  65. Panetta FD, Cacho OJ (2012) Beyond fecundity control: which weeds are most containable? J Appl Ecol 49:311–321CrossRefGoogle Scholar
  66. Panetta FD, Timmins SM (2004) Evaluating the feasibility of eradication for terrestrial weed incursions. Plant Protect Q 19:5–11Google Scholar
  67. Pheloung PC, Williams PA, Halloy SR (1999) A weed-risk assessment model for use as a biosecurity tool evaluating plant introductions. J Environ Manage 57:239–251CrossRefGoogle Scholar
  68. Pyšek P, Richardson DM, Rejmánek M et al (2004) Alien plants in checklists and floras: towards better communication between taxonomists and ecologists. Taxon 53:131–143CrossRefGoogle Scholar
  69. Rentería JL (2002) Ecología y manejo de la cascarilla (Cinchona pubescens Vahl), en Santa Cruz, Galápagos. Área Agropecuaria y de Recursos Naturales Renovables. Universidad Nacional de Loja, Loja, EcuadorGoogle Scholar
  70. Rentería JL (2011) Towards an optimal management of the invasive plant Rubus niveus in the Galapagos Islands. Imperial College London, LondonGoogle Scholar
  71. Rentería JL, Buddenhagen CE (2006) Invasive plants in the Scalesia pedunculata forest at Los Gemelos, Santa Cruz, Galapagos. Galapag Res 64:31–35Google Scholar
  72. Rentería JL, Ellison C (2007) Potential biological control of Lantana camara in the Galapagos using the rust Puccinia lantanae. In: Julien MH, Sforza R, Bon MC (eds) Proceedings of the XII international symposium on biological control of weeds, La Grande Motte, France, 22–27 Apr 2007, p 361Google Scholar
  73. Rentería JL, Gardener MR, Panetta FD et al (2012a) Management of the invasive hill raspberry (Rubus niveus) on Santiago Island, Galapagos: eradication or indefinite control? Invasive Plant Sci Manage 5:37–46CrossRefGoogle Scholar
  74. Rentería JL, Gardener MR, Panetta FD et al (2012b) Possible impacts of the invasive plant Rubus niveus on the native vegetation of the Scalesia forest in the Galapagos Islands. PLoS ONE 7:e48106PubMedCrossRefGoogle Scholar
  75. Richardson DM, Pyšek P, Rejmanek M et al (2000) Naturalization and invasion of alien plants: concepts and definitions. Divers Distrib 6:93–107CrossRefGoogle Scholar
  76. Roura-Pascual N, Richardson DM, Chapman RA et al (2011) Managing biological invasions: charting courses to desirable futures in the Cape Floristic Region. Reg Environ Change 11:311–320CrossRefGoogle Scholar
  77. Schofield EK (1973) Galápagos flora: the threat of introduced plants. Biol Conserv 5:48–51CrossRefGoogle Scholar
  78. Simberloff D (2003) Eradication- preventing invasions at the onset. Weed Sci 51:247–253CrossRefGoogle Scholar
  79. Simberloff D (2012) Risks of biological control for conservation purposes. Biocontrol 57:263–276CrossRefGoogle Scholar
  80. Skoien P, Csurhes S (2009) Weed risk assessment Dutchman’s pipe Aristolochia elegans. Queensland Primary Industries and Fisheries, BrisbaneGoogle Scholar
  81. Snell HM, Stone PA, Snell HL (1996) A summary of geographical characteristics of the Galápagos Islands. J Biogeogr 23:619–624CrossRefGoogle Scholar
  82. Snell HL, Tye A, Causton CE et al (2002a) Current status of and threats to the terrestrial biodiversity of Galapagos. In: Bensted-Smith R (ed) A biodiversity vision for the Galapagos Islands. Charles Darwin Foundation and World Wildlife Fund, Puerto Ayora, Galapagos, pp 30–47Google Scholar
  83. Snell HL, Tye A, Causton C et al (2002b) Projections for the future: a terrestrial biodiversity vision. In: Bensted-Smith R (ed) A biodiversity vision for the Galapágos Islands. Charles Darwin Foundation and World Wildlife Fund, Puerto Ayora, pp 48–59Google Scholar
  84. Soria M, Gardener MR, Tye A (2002) Eradication of potentially invasive plants with limited distributions in the Galapagos islands. In: Veitch D, Clout M (eds) Turning the tide: the eradication of invasive species. Invasive Species Specialty Group of the World Conservation Union (IUCN), Auckland, pp 287–292Google Scholar
  85. Standish RJ, Robertson AW, Williams PA (2002) The impact of an invasive weed Tradescantia fluminensis on native forest regeneration. J Appl Ecol 38:1253–1263CrossRefGoogle Scholar
  86. Traveset A, Heleno R, Chamorro S et al. (2013) Invaders of pollination networks in the GalÃpagos Islands: Emergence of novel communities. Proc R Soc - B 280:2012–3040.Google Scholar
  87. Trueman M (2008) Minimising the risk of invasion into the Galapagos National Park by introduced plants from the inhabited areas of the Galapagos Islands. Masters, Charles Darwin University, DarwinGoogle Scholar
  88. Trueman M, d’Ozouville N (2010) Characterizing the Galapagos terrestrial climate in the face of climate change. Galapagos Res 67:27–37Google Scholar
  89. Trueman M, Atkinson R, Guézou AP et al (2010) Residence time and human-mediated propagule pressure at work in the alien flora of Galapagos. Biol Invasion 12:3949–3960CrossRefGoogle Scholar
  90. Tye A (2001) Invasive plant problems and requirements for weed risk assessment in the Galápagos islands. In: Groves RH, Panetta FD, Virtue JD (eds) Weed risk assessment. CSIRO Publishing, Melbourne, pp 153–175Google Scholar
  91. Tye A (2006) Can we infer island introduction and naturalization rates from inventory data? Evidence from introduced plants in Galápagos. Biol Invasion 8:201–215CrossRefGoogle Scholar
  92. Tye A (2007) Cost of rapid-response eradication of a recently introduced plant, tropical kudzu (Pueraria phaseoloides), from Santa Cruz Island, Galapagos. Plant Protect Q 22:33–34Google Scholar
  93. Tye A, Aldaz I (1999) Effects of the 1997–98 El Niño event on the vegetation of Galápagos. Noticias Galápagos 60:22–24Google Scholar
  94. Tye A, Francisco-Ortega J (2011) Origins and evolution of Galapagos endemic vascular plants. In: Bramwell D, Caujapé-Castells J (eds) The biology of island floras. Cambridge University Press, Cambridge, pp 89–153CrossRefGoogle Scholar
  95. Van Driesche RG, Carruthers RI, Center T et al (2010) Classical biological control for the protection of natural ecosystems. Biol Control 54:S2–S33CrossRefGoogle Scholar
  96. van Leeuwen JFN, Froyd CA, van der Knaap WO et al (2008) Fossil pollen as a guide to conservation in the Galápagos. Science 322:1206PubMedCrossRefGoogle Scholar
  97. Vilà M, Espinar JL, Hejda M et al (2011) Ecological impacts of invasive alien plants: a meta-analysis of their effects on species, communities and ecosystems. Ecol Lett 14:702–708PubMedCrossRefGoogle Scholar
  98. Vitousek PM, D’Antonio OM, Loope LL et al (1997) Introduced species: a significant component of human-caused global change. NZ J Ecol 21:1–16Google Scholar
  99. Watson J, Trueman M, Tufet M et al (2009) Mapping terrestrial anthropogenic degradation on the inhabited islands of the Galápagos archipelago. Oryx 44:79–82CrossRefGoogle Scholar
  100. Weber J, Panetta FD, Virtue J et al (2009) An analysis of assessment outcomes from eight years’ operation of the Australian border weed risk assessment system. J Environ Manage 90:798–807PubMedCrossRefGoogle Scholar
  101. Williams PA (2006) The role of blackbirds (Turdus merula) in weed invasion in New Zealand. NZ J Ecol 30:285–291Google Scholar
  102. Zapata CE (2007) Evaluation of the quarantine and inspection system for Galapagos (SICGAL) after seven years. In: Cayot L (ed) Galapagos report 2006–2007. Charles Darwin Foundation, Galapagos National Park & INGALA, Puerto AyoraGoogle Scholar
  103. Zavaleta ES, Hobbs RJ, Mooney HA (2001) Viewing invasive species removal in a whole-ecosystem context. Trends Ecol Evol 16:454–459CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Mark R. Gardener
    • 1
    • 2
  • Mandy Trueman
    • 2
    • 1
  • Chris Buddenhagen
    • 3
    • 1
  • Ruben Heleno
    • 4
    • 1
  • Heinke Jäger
    • 5
    • 1
  • Rachel Atkinson
    • 1
  • Alan Tye
    • 1
  1. 1.Charles Darwin FoundationSanta CruzEcuador
  2. 2.School of Plant BiologyUniversity of Western AustraliaCrawleyAustralia
  3. 3.Department of Biological ScienceFlorida State UniversityTallahasseeUSA
  4. 4.Department of Life Sciences, Centre for Functional EcologyUniversity of CoimbraCoimbraPortugal
  5. 5.Department of EcologyTechnische Universität BerlinBerlinGermany

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