In the past decade, ecologists have witnessed vast improvements in our ability to collect animal movement data through animal-borne technology, such as through GPS or ARGOS systems. However, more data does not necessarily yield greater knowledge in understanding animal ecology and conservation. In this paper, we provide a review of the major benefits, problems and potential misuses of GPS/Argos technology to animal ecology and conservation. Benefits are obvious, and include the ability to collect fine-scale spatio-temporal location data on many previously impossible to study animals, such as ocean-going fish, migratory songbirds and long-distance migratory mammals. These benefits come with significant problems, however, imposed by frequent collar failures and high cost, which often results in weaker study design, reduced sample sizes and poorer statistical inference. In addition, we see the divorcing of biologists from a field-based understanding of animal ecology to be a growing problem. Despite these difficulties, GPS devices have provided significant benefits, particularly in the conservation and ecology of wide-ranging species. We conclude by offering suggestions for ecologists on which kinds of ecological questions would currently benefit the most from GPS/Argos technology, and where the technology has been potentially misused. Significant conceptual challenges remain, however, including the links between movement and behaviour, and movement and population dynamics.
Arnemo J., Ahlqvist P., Anderson R., Bernesten F., Ericsson G., Odden J., Brunberg S., Segerstrom P.& Swenson J.. 2006Risk of capture-related mortality in large free-ranging mammals: experiences from Scandanavia. Wildl. Biol. 12, 109–113. (doi:10.2981/0909-6396(2006)12[109:ROCMIL]2.0.CO;2). Crossref, ISI, Google Scholar Boone R. B., Thirgood S. J.& Hopcraft J. G. C.. 2006Serengeti Wildebeest migratory patterns modeled from rainfall and new vegetation growth. Ecology 87, 1987–1994. (doi:10.1890/0012-9658(2006)87[1987:SWMPMF]2.0.CO;2). Crossref, PubMed, ISI, Google Scholar Boyce M. S., Pitt J., Northrup J. M., Morehouse A. T., Knopff K. H., Cristescu B.& Stenhouse G. B.. 2010Temporal autocorrelation functions for movement rates from global positioning system radiotelemetry data. Phil. Trans. R. Soc. B 365, 2213–2219. (10.1098/rstb.2010.0080). Link, ISI, Google Scholar Chester C. C.. 2006Landscape vision and the Yellowstone to Yukon Conservation Initiative. Conservation across borders: biodiversity in an interdependent world (ed. & Chester C. C.), pp. 134–157. Washington, DC: Island Press. Google Scholar Craighead F. C.. 1982Track of the grizzly. New York, NY: Random House. Google Scholar Craighead J. J., Sumner J. S.& Mitchell J. A.. 1995The grizzly bears of Yellowstone: their ecology in the Yellowstone ecosystem. New York, NY: Island Press. Google Scholar
- Environment Canada. 2009Scientific review for the identification of critical habitat for Woodland caribou (Rangifer tarandus caribou), Boreal Population, in Canada., pp. 254. Ottawa, ON. Google Scholar
Garshelis D. L.. 2000Delusions in habitat evaluation: measuring use, selection, and importance. Research techniques in animal ecology: controversies and consequences (eds , Boitani L.& Fuller T. K.), pp. 111–154. New York, NY: Columbia University Press. Google Scholar Gau R. J.,2004Uncontrolled field performance of Televilt GPS-SimplexTM collars on grizzly bears in western and northern Canada. Wildl. Soc. Bull. 32, 693–701. (doi:10.2193/0091-7648(2004)032[0693:UFPOTG]2.0.CO;2). Crossref, ISI, Google Scholar Griffith B., Douglas D. C., Walsh N. E., Young D. D., McCabe T. R., Russell D. E., White R. G., Cameron R. D.& Whitten R.. 2002The Porcupine Caribou herd. Biological sciences report (eds , Douglas D. C., Reynolds P. E.& Rhode E. B.). Washington, DC: US Geological Survey, Biological Resources Division. Google Scholar Handcock R. N., Swain D. L., Bishop-Hurley G. J., Patison K. P., Wark T., Valencia P., Corke P.& O'Neill C. J.. 2009Monitoring animal behaviour and environmental interactions using wireless sensor networks, GPS collars and satellite remote sensing. Sensors 9, 3583–3603. Crossref, ISI, Google Scholar Hebblewhite M.. 2009Linking wildlife populations with ecosystem change: state-of-the-art satellite technology for National park science. Park Sci. 26, 1–14. Google Scholar Kie J. G., Matthiopoulos J., Fieberg J., Powell R. A., Cagnacci F., Mitchell M. S., Gaillard J. M.& Moorcroft P. R.. 2010The home-range concept: are traditional estimators still relevant with modern telemetry technology?Phil. Trans. R. Soc. B 365, 2221–2231. (doi:10.1098/rstb.2010.0093). Link, ISI, Google Scholar Leban F. A., Wisdom M. J., Garton E. O., Johnson B. K.& Kie J. G.. 2001Effect of sample size on the performance of resource selection analyses. Radio tracking and wildlife populations (eds , Millspaugh J. J.& Marzluff J. M.), pp. 291–307. New York, NY: Academic Press. Google Scholar Manly B. F. J., McDonald L. L., Thomas D. L., McDonald T. L.& Erickson W. P.(eds) 2002Resource selection by animals: statistical analysis and design for field studies, 2nd edn.Boston, MA: Kluwer. Google Scholar Meyburg B. U., Paillat P.& Meyburg C.. 2003Migration routes of Steppe Eagles between Asia and Africa: a study by means of satellite telemetry. Condor 105, 219–227. (doi:10.1650/0010-5422(2003)105[0219:MROSEB]2.0.CO;2). Crossref, ISI, Google Scholar Moorcroft P. R.& Lewis M. A.. 2006Mechanistic home range analysis. Monographs in Population Biology. Princeton, NJ, USA: Princeton University Press. Google Scholar Mueller T., Olson K. A., Fuller T. K., Schaller G. B., Murray M. G.& Leimgruber P.. 2008In search of forage: predicting dynamic habitats of Mongolian gazelles using satellite-based estimates of vegetation productivity. J. Appl. Ecol. 45, 649–658. (doi:10.1111/j.1365-2664.2007.01371.x). Crossref, ISI, Google Scholar Osko T. J., Hiltz M. N., Hudson R. J.& Wasel S. M.. 2004Moose habitat preferences in response to changing availability. J. Wildl. Manage. 68, 576–584. (doi:10.2193/0022-541X(2004)068[0576:MHPIRT]2.0.CO;2). Crossref, ISI, Google Scholar Running S. W., Nemani R. R., Heinsch F. A., Zhao M. S., Reeves M.& Hashimoto H.. 2004A continuous satellite-derived measure of global terrestrial primary production. Bioscience 54, 547–560. (doi:10.1641/0006-3568(2004)054[0547:ACSMOG]2.0.CO;2). Crossref, ISI, Google Scholar Turchin P.. 1998Quantitative analysis of movement: measuring and modeling population redistribution in animals and plants. Sunderland, MA: Sinauer Associates, Inc. Google Scholar