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- Title
Integrating comparative functional response experiments into global change research.
- Authors
O'Gorman, Eoin J.; Hays, Graeme
- Abstract
(a) Direct feeding interactions between a higher predator (the three ‐ spined stickleback, Gasterosteus aculeatus), intermediate consumers (native Mysis salemaai and invasive Hemimysis anomala mysids), and a basal prey (the cladoceran, Daphnia magna). Photo credits: G. aculeatus and H. anomala by Stephen Potts, M. salemaai and D. magna obtained from Wikimedia Commons; (b) functional response of three native mysids (in blue) and three invasive mysids (in red); (c) functional response of three native mysids and one stickleback (in blue) and three invasive mysids and one stickleback (in red). Shaded areas are bootstrapped 95% confidence intervals. Adapted from Barrios ‐ O'Neill et al. (). In Focus: Barrios ‐ O'Neill, D., Dick, J.T.A., Emmerson, M.C., Ricciardi, A., MacIsaac, H.J., Alexander, M.E. & Bovy, H.C. (2014) Fortune favours the bold: a higher predator reduces the impact of a native but not an invasive intermediate predator. Journal of Animal Ecology, 83, 693–701. There is a growing appreciation for the importance of non ‐ consumptive effects in predator–prey interaction research, which can often outweigh the importance of direct feeding. Barrios ‐ O'Neill et al. () report a novel method to characterize such effects by comparing the functional response of native and introduced intermediate consumers in the presence and absence of a higher predator. The invader exhibited stronger direct feeding and was also more resistant to intimidation by the higher predator. This experimental framework may be incorporated into mainstream global change research, for example, to quantify the importance of non ‐ consumptive effects for the success or failure of biological invasions. The article focuses on the paper by Barrios ‐ O'Neill et al. (2014) and in doing so discusses the functional response and non ‐ trophic interaction literature in the context of biological invasions. It also provides a future framework for integrating laboratory experiments, field manipulations and modelling approaches in global change research.
- Subjects
COMPARATIVE studies; PREDATION; ANIMAL feeding behavior; ANTAGONISM (Ecology); NONCONSUMPTIVE use of water
- Publication
Journal of Animal Ecology, 2014, Vol 83, Issue 3, p525
- ISSN
0021-8790
- Publication type
Article
- DOI
10.1111/1365-2656.12216