Density estimates for Canada lynx vary among estimation methods
Abstract Unbiased population density estimates are critical for ecological research and wildlife management but are often difficult to obtain. Researchers use a variety of sampling and statistical methods to generate estimates of density, but few studies have compared estimates across methods. Durin...
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crwiley:10.1002/ecs2.3774 2024-06-23T07:57:31+00:00 Density estimates for Canada lynx vary among estimation methods Doran‐Myers, D. Kenney, A. J. Krebs, C. J. Lamb, C. T. Menzies, A. K. Murray, D. Studd, E. K. Whittington, J. Boutin, S. 2021 http://dx.doi.org/10.1002/ecs2.3774 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.3774 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecs2.3774 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.3774 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecosphere volume 12, issue 10 ISSN 2150-8925 2150-8925 journal-article 2021 crwiley https://doi.org/10.1002/ecs2.3774 2024-06-06T04:22:36Z Abstract Unbiased population density estimates are critical for ecological research and wildlife management but are often difficult to obtain. Researchers use a variety of sampling and statistical methods to generate estimates of density, but few studies have compared estimates across methods. During 2016–2017, we surveyed Canada lynx ( Lynx canadensis ) in southwestern Yukon Territory, Canada, using track transect counts, hair snares, camera traps, live traps, and Global Positioning System (GPS) collars. From these data, we estimated lynx density with two linearly scaled count methods, one spatial mark–recapture method, three spatial mark–resight methods, and one cumulative‐time method. We found up to fivefold variation in point density estimates despite adhering to method requirements and assumptions in a manner consistent with other studies. Our results highlight the dependency of density estimates on sampling process and model assumptions and demonstrate the value of careful and unbiased sampling design. Further research is needed to fully assess the accuracy and limitations of the many wildlife density estimation methods that are currently in use so that techniques can be appropriately applied to typical study systems and species. Article in Journal/Newspaper Lynx Yukon Wiley Online Library Canada Yukon Ecosphere 12 10 |
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description |
Abstract Unbiased population density estimates are critical for ecological research and wildlife management but are often difficult to obtain. Researchers use a variety of sampling and statistical methods to generate estimates of density, but few studies have compared estimates across methods. During 2016–2017, we surveyed Canada lynx ( Lynx canadensis ) in southwestern Yukon Territory, Canada, using track transect counts, hair snares, camera traps, live traps, and Global Positioning System (GPS) collars. From these data, we estimated lynx density with two linearly scaled count methods, one spatial mark–recapture method, three spatial mark–resight methods, and one cumulative‐time method. We found up to fivefold variation in point density estimates despite adhering to method requirements and assumptions in a manner consistent with other studies. Our results highlight the dependency of density estimates on sampling process and model assumptions and demonstrate the value of careful and unbiased sampling design. Further research is needed to fully assess the accuracy and limitations of the many wildlife density estimation methods that are currently in use so that techniques can be appropriately applied to typical study systems and species. |
format |
Article in Journal/Newspaper |
author |
Doran‐Myers, D. Kenney, A. J. Krebs, C. J. Lamb, C. T. Menzies, A. K. Murray, D. Studd, E. K. Whittington, J. Boutin, S. |
spellingShingle |
Doran‐Myers, D. Kenney, A. J. Krebs, C. J. Lamb, C. T. Menzies, A. K. Murray, D. Studd, E. K. Whittington, J. Boutin, S. Density estimates for Canada lynx vary among estimation methods |
author_facet |
Doran‐Myers, D. Kenney, A. J. Krebs, C. J. Lamb, C. T. Menzies, A. K. Murray, D. Studd, E. K. Whittington, J. Boutin, S. |
author_sort |
Doran‐Myers, D. |
title |
Density estimates for Canada lynx vary among estimation methods |
title_short |
Density estimates for Canada lynx vary among estimation methods |
title_full |
Density estimates for Canada lynx vary among estimation methods |
title_fullStr |
Density estimates for Canada lynx vary among estimation methods |
title_full_unstemmed |
Density estimates for Canada lynx vary among estimation methods |
title_sort |
density estimates for canada lynx vary among estimation methods |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ecs2.3774 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.3774 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecs2.3774 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecs2.3774 |
geographic |
Canada Yukon |
geographic_facet |
Canada Yukon |
genre |
Lynx Yukon |
genre_facet |
Lynx Yukon |
op_source |
Ecosphere volume 12, issue 10 ISSN 2150-8925 2150-8925 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ecs2.3774 |
container_title |
Ecosphere |
container_volume |
12 |
container_issue |
10 |
_version_ |
1802651196510437376 |