Movement-based methods to infer parturition events in migratory ungulates
Long-distance migrations by ungulate species are a globally imperiled natural phenomenon and conservation of them requires monitoring population vital rates. Satellite telemetry tracking is widely used for understanding the spatial distribution and movement of animals, especially migratory animals i...
Published in: | Canadian Journal of Zoology |
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Online Access: | http://dx.doi.org/10.1139/cjz-2017-0314 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0314 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0314 |
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crcansciencepubl:10.1139/cjz-2017-0314 2024-05-12T08:02:22+00:00 Movement-based methods to infer parturition events in migratory ungulates Cameron, Matthew D. Joly, Kyle Breed, Greg A. Parrett, Lincoln S. Kielland, Knut 2018 http://dx.doi.org/10.1139/cjz-2017-0314 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0314 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0314 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 96, issue 11, page 1187-1195 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2018 crcansciencepubl https://doi.org/10.1139/cjz-2017-0314 2024-04-18T06:54:51Z Long-distance migrations by ungulate species are a globally imperiled natural phenomenon and conservation of them requires monitoring population vital rates. Satellite telemetry tracking is widely used for understanding the spatial distribution and movement of animals, especially migratory animals in remote environments. Recently, analytical methods have been developed to infer parturition events from movement data in multiple species that calve in isolation, but to date such methods have not been tested on animals that both migrate and spatially aggregate during calving. We applied two movement-based methods developed to infer parturition in nonmigratory woodland caribou (Rangifer tarandus caribou (Gmelin, 1788)) to 241 reproductive seasons spanning 6 years of GPS data from migratory barren-ground caribou (Rangifer tarandus granti J.A. Allen, 1902). We compared results from both methods to data from aerial surveys of collared females during the calving period. We found that each movement-based method had ∼80% overall accuracy to identify calving events, with interannual variation ranging from 61% to 100%. When we considered instances when the two analytical methods agreed on parturition outcome, the accuracy increased to 89% with an annual range of 73%–100%. Using these methods, we identified marked interannual differences in peak calving dates and higher parturition rates than previously reported for this caribou herd. The successful application of these analyses to a migratory, gregarious ungulate suggests a broader applicability of the methodology. Article in Journal/Newspaper caribou Rangifer tarandus Canadian Science Publishing Canadian Journal of Zoology 96 11 1187 1195 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Cameron, Matthew D. Joly, Kyle Breed, Greg A. Parrett, Lincoln S. Kielland, Knut Movement-based methods to infer parturition events in migratory ungulates |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Long-distance migrations by ungulate species are a globally imperiled natural phenomenon and conservation of them requires monitoring population vital rates. Satellite telemetry tracking is widely used for understanding the spatial distribution and movement of animals, especially migratory animals in remote environments. Recently, analytical methods have been developed to infer parturition events from movement data in multiple species that calve in isolation, but to date such methods have not been tested on animals that both migrate and spatially aggregate during calving. We applied two movement-based methods developed to infer parturition in nonmigratory woodland caribou (Rangifer tarandus caribou (Gmelin, 1788)) to 241 reproductive seasons spanning 6 years of GPS data from migratory barren-ground caribou (Rangifer tarandus granti J.A. Allen, 1902). We compared results from both methods to data from aerial surveys of collared females during the calving period. We found that each movement-based method had ∼80% overall accuracy to identify calving events, with interannual variation ranging from 61% to 100%. When we considered instances when the two analytical methods agreed on parturition outcome, the accuracy increased to 89% with an annual range of 73%–100%. Using these methods, we identified marked interannual differences in peak calving dates and higher parturition rates than previously reported for this caribou herd. The successful application of these analyses to a migratory, gregarious ungulate suggests a broader applicability of the methodology. |
format |
Article in Journal/Newspaper |
author |
Cameron, Matthew D. Joly, Kyle Breed, Greg A. Parrett, Lincoln S. Kielland, Knut |
author_facet |
Cameron, Matthew D. Joly, Kyle Breed, Greg A. Parrett, Lincoln S. Kielland, Knut |
author_sort |
Cameron, Matthew D. |
title |
Movement-based methods to infer parturition events in migratory ungulates |
title_short |
Movement-based methods to infer parturition events in migratory ungulates |
title_full |
Movement-based methods to infer parturition events in migratory ungulates |
title_fullStr |
Movement-based methods to infer parturition events in migratory ungulates |
title_full_unstemmed |
Movement-based methods to infer parturition events in migratory ungulates |
title_sort |
movement-based methods to infer parturition events in migratory ungulates |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/cjz-2017-0314 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0314 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0314 |
genre |
caribou Rangifer tarandus |
genre_facet |
caribou Rangifer tarandus |
op_source |
Canadian Journal of Zoology volume 96, issue 11, page 1187-1195 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2017-0314 |
container_title |
Canadian Journal of Zoology |
container_volume |
96 |
container_issue |
11 |
container_start_page |
1187 |
op_container_end_page |
1195 |
_version_ |
1798844459222302720 |