Lessons from introductions of exotic species as a possible information source for managing translocations of birds
Phillip Cassey A E , Tim M. Blackburn B , Richard P. Duncan C and Julie L. Lockwood DA Centre for Ornithology, School of Biosciences, University of Birmingham, Edgbaston, B15 2TT, United Kingdom.
B Institute of Zoology, ZSL, Regents Park, London NW1 4RY, United Kingdom.
C BioProtection Group, PO Box 84, Lincoln University, Canterbury, New Zealand.
D Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ 08901, USA.
E Corresponding author. Email: p.cassey@bham.ac.uk
Wildlife Research 35(3) 193-201 https://doi.org/10.1071/WR07109
Submitted: 7 August 2007 Accepted: 24 December 2007 Published: 20 May 2008
Abstract
It has been previously suggested that the characteristics that are driving the taxonomic homogenisation of the global avifauna, through the extinction of native bird species and the establishment of exotic bird species, are opposite sides of the same coin. One of the most important tools that conservation biologists and wildlife managers have to ameliorate the extinction of a species is to reintroduce populations to stronghold areas from which they have been extirpated or were not previously common. In this paper, we address the question of what the study of exotic bird introductions can tell us to inform the translocation of native species. We review the relative importance of the five factors that have been suggested significantly to influence the successful establishment of non-native species: introduction effort, environmental matching, species’ interactions, species’ life histories, and phylogenetic relatedness. Current evidence suggests that introduction effort will be an important determinant of release, but how many individuals need to be released, and in how many separate release events, is contingent on characteristics of species and environment. The importance of climate matching for introduction success suggests that the success of translocations will depend greatly on the study and amelioration of the problem that caused the initial population decline. This is most problematic in situations where the decline is associated with human-induced climate change. Migratory and sexually selected species may be harder to re-establish, but related species may differ substantially in their likelihood of success. We suggest that further insights into the reintroduction process may be gained particularly by studying species that are experiencing a threat in their native range but which are also being widely released as exotics outside of this range.
Acknowledgements
The authors are exceedingly grateful to Brad Griffith for providing access to the avian reintroduction data from Wolf et al. (1998) and commenting on the manuscript. Camilla Myers kindly invited us to contribute to the ‘Invasive species’ special issue and constructive comments from John Ewen, Barry Brook, Doug Armstrong and an anonymous reviewer greatly improved an earlier version.
Araujo, M. B. , and Luoto, M. (2007). The importance of biotic interactions for modelling species distributions under climate change. Global Ecology and Biogeography 16, 743–753.
| Crossref | GoogleScholarGoogle Scholar |
Bessa-Gomes, C. , Danek-Gontard, M. , Cassey, P. , Moller, A. P. , Legendre, S. , and Clobert, J. (2003). Mating behaviour influences extinction risk: insights from demographic modelling and comparative analysis of avian extinction risk. Annales Zoologici Fennici 40, 231–245.
Blackburn, T. M. , and Cassey, P. (2004). Are introduced and re-introduced species comparable? A case study of birds. Animal Conservation 7, 427–433.
| Crossref | GoogleScholarGoogle Scholar |
Case, T. J. (1996). Global patterns in the establishment and distribution of exotic birds. Biological Conservation 78, 69–96.
| Crossref | GoogleScholarGoogle Scholar |
Daehler, C. C. , and Strong, D. R. J. (1993). Prediction and biological invasions. Trends in Ecology & Evolution 8, 380.
| Crossref | GoogleScholarGoogle Scholar |
Duncan, R. P. , Blackburn, T. M. , and Veltman, C. J. (1999). Determinants of geographical range sizes: a test using introduced New Zealand birds. Journal of Animal Ecology 68, 963–975.
| Crossref | GoogleScholarGoogle Scholar |
Engelhardt, K. A. M. , Kadlec, J. A. , Roy, V. L. , and Powell, J. A. (2000). Evaluation of translocation criteria: case study with trumpeter swans (Cygnus buccinator). Biological Conservation 94, 173–181.
| Crossref | GoogleScholarGoogle Scholar |
Jeschke, J. M. , and Strayer, D. L. (2005). Invasion success of vertebrates in Europe and North America. Proceedings of the National Academy of Sciences of the United States of America 102, 7198–7202.
| Crossref | GoogleScholarGoogle Scholar | PubMed |
Lockwood, J. L. (1999). Using taxonomy to predict success among introduced avifauna: relative importance of transport and establishment. Conservation Biology 13, 560–567.
| Crossref | GoogleScholarGoogle Scholar |
Lovegrove, T. G. (1996). Island releases of saddlebacks Philesturnus carunculatus in New Zealand. Biological Conservation 77, 151–157.
| Crossref | GoogleScholarGoogle Scholar |
Matson, T. K. , Goldzien, A. W. , and Jarman, P. J. (2004). Factors affecting the success of translocations of the black-faced impala in Namibia. Biological Conservation 116, 359–365.
| Crossref | GoogleScholarGoogle Scholar |
Moulton, M. P. , Sanderson, J. G. , and Labisky, R. F. (2001b). Patterns of success in game bird (Aves: Galliformes) introductions to the Hawaiian islands and New Zealand. Evolutionary Ecology Research 3, 507–519.
Rout, T. M. , Hauser, C. E. , and Possingham, H. P. (2007). Minimise long-term loss or maximize short-term gain? Optimal translocation strategies for threatened species. Ecological Modelling 201, 67–74.
| Crossref | GoogleScholarGoogle Scholar |
Simberloff, D. , and Gibbons, L. (2004). Now you see them, now you don’t! – population crashes of established introduced species. Biological Invasions 6, 161–172.
| Crossref | GoogleScholarGoogle Scholar |
Sorci, G. , Møller, A. P. , and Clobert, J. (1998). Plumage dichromatism of birds predicts introduction success in New Zealand. Journal of Animal Ecology 67, 263–269.
| Crossref | GoogleScholarGoogle Scholar |
Taylor, C. M. , and Hastings, A. (2005). Allee effects in biological invasions. Ecology Letters 8, 895–908.
| Crossref | GoogleScholarGoogle Scholar |
Traill, L. W. , Bradshaw, C. J. A. , and Brook, B. W. (2007). Minimum viable population size: a meta-analysis of 30 years of published estimates. Biological Conservation 139, 159–166.
| Crossref | GoogleScholarGoogle Scholar |
Wolf, C. M. , Garland, T. , and Griffith, B. (1998). Predictors of avian and mammalian translocation success: re-analysis with phylogenetically independent contrasts. Biological Conservation 86, 243–255.
| Crossref | GoogleScholarGoogle Scholar |