Spatial and temporal variation in the effects of climatic variables on dugong calf production
Fuentes, Mariana M.P.B., Delean, Steven, Grayson, Jillian, Lavender, Sally, Logan, Murray, and Marsh, Helene (2016) Spatial and temporal variation in the effects of climatic variables on dugong calf production. PLoS One, 11 (6). pp. 1-14.
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Abstract
Knowledge of the relationships between environmental forcing and demographic parameters is important for predicting responses from climatic changes and to manage populations effectively. We explore the relationships between the proportion of sea cows (Dugong dugon) classified as calves and four climatic drivers (rainfall anomaly, Southern Oscillation El Nino Index [SOI], NINO 3.4 sea surface temperature index, and number of tropical cyclones) at a range of spatially distinct locations in Queensland, Australia, a region with relatively high dugong density. Dugong and calf data were obtained from standardized aerial surveys conducted along the study region. A range of lagged versions of each of the focal climatic drivers (1 to 4 years) were included in a global model containing the proportion of calves in each population crossed with each of the lagged versions of the climatic drivers to explore relationships. The relative influence of each predictor was estimated via Gibbs variable selection. The relationships between the proportion of dependent calves and the climatic drivers varied spatially and temporally, with climatic drivers influencing calf counts at sub-regional scales. Thus we recommend that the assessment of and management response to indirect climatic threats on dugongs should also occur at sub-regional scales.
| Item ID: | 45546 |
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| Item Type: | Article (Research - C1) |
| ISSN: | 1932-6203 |
| Additional Information: | © 2016 Fuentes et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Date Deposited: | 03 Aug 2016 07:34 |
| FoR Codes: | 41 ENVIRONMENTAL SCIENCES > 4101 Climate change impacts and adaptation > 410102 Ecological impacts of climate change and ecological adaptation @ 50% 31 BIOLOGICAL SCIENCES > 3199 Other biological sciences > 319902 Global change biology @ 50% |
| SEO Codes: | 96 ENVIRONMENT > 9603 Climate and Climate Change > 960301 Climate Change Adaptation Measures @ 50% 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 50% |
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