Web‐based application for threatened woodland caribou population modeling
ABSTRACT Woodland caribou (Rangifer tarandus caribou) are threatened in Canada, with population and distribution declines evident in most regions of the country. Causes of declines are linked to landscape change from forest fires and human development, notably forestry oil and gas activities, which...
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| Format: | Article |
| Language: | English |
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Wiley
2019-03-01
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| Series: | Wildlife Society Bulletin |
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| Online Access: | https://doi.org/10.1002/wsb.950 |
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| author | Daniel R. Eacker Mark Hebblewhite Robin Steenweg Mike Russell Amy Flasko Dave Hervieux |
| author_facet | Daniel R. Eacker Mark Hebblewhite Robin Steenweg Mike Russell Amy Flasko Dave Hervieux |
| author_sort | Daniel R. Eacker |
| collection | DOAJ |
| description | ABSTRACT Woodland caribou (Rangifer tarandus caribou) are threatened in Canada, with population and distribution declines evident in most regions of the country. Causes of declines are linked to landscape change from forest fires and human development, notably forestry oil and gas activities, which result in caribou habitat loss and affect ecosystem food webs. The Federal Species at Risk Act requires effective protection and restoration of caribou habitat, with actions to increase caribou survival. These requirements call for effective monitoring of caribou population trends to gauge success. Many woodland caribou populations are nearly impossible to count using traditional aerial survey methods, but demographic‐based monitoring approaches can be used to estimate population trends based on population modeling of vital rates from marked animals. Monitoring programs have used a well‐known simple population model (the Recruitment‐Mortality [R/M] equation) to estimate demographic rates for woodland caribou, but have faced challenges in managing large data streams and providing transparency in the demographic estimation process. We present a stand‐alone statistical software application using open‐source software to permit efficient, transparent, and replicable demographic estimation for woodland caribou populations. We developed an easy‐to‐use, interactive web‐based application for the R/M population model that uses a Bayesian estimation approach and provides the user flexibility in choice of prior distributions and other output features. We illustrate the web‐application to the A la Pêche Southern Mountain (Central Group) woodland caribou population in west‐central Alberta, Canada, during 1998–2017. Our estimates of population demographics are consistent with previous research on this population and highlight the utility of the application in assessing caribou population responses to species recovery actions. We provide example data, computer code, the web‐based application package, and a user manual to guide installation and use. We also review underlying assumptions and challenges of population monitoring in this case study. We expect our software will contribute to efficient monitoring of woodland caribou and help in the assessment of recovery actions for this species. © 2019 The Authors. Wildlife Society Bulletin Published by Wiley Periodicals, Inc. |
| format | Article |
| id | doaj-art-8e13be9934f24a2188cf3e32189914a4 |
| institution | OA Journals |
| issn | 2328-5540 |
| language | English |
| publishDate | 2019-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wildlife Society Bulletin |
| spelling | doaj-art-8e13be9934f24a2188cf3e32189914a42025-08-20T01:56:52ZengWileyWildlife Society Bulletin2328-55402019-03-0143116717710.1002/wsb.950Web‐based application for threatened woodland caribou population modelingDaniel R. Eacker0Mark Hebblewhite1Robin Steenweg2Mike Russell3Amy Flasko4Dave Hervieux5Wildlife Biology ProgramDepartment of Ecosystem and Conservation SciencesW. A. Franke College of Forestry and ConservationUniversity of MontanaMissoulaMT 59812USAWildlife Biology ProgramDepartment of Ecosystem and Conservation SciencesW. A. Franke College of Forestry and ConservationUniversity of MontanaMissoulaMT 59812USAAlberta Environment and Parks − Operations Division1601 Provincial Building, 10320–99 StreetGrande PrairieAB T8V 6J4CanadaAlberta Environment and Parks − Operations Division1601 Provincial Building, 10320–99 StreetGrande PrairieAB T8V 6J4CanadaAlberta Environment and Parks − Policy Division1601 Provincial Building, 10320–99 StreetGrande PrairieAB T8V 6J4CanadaAlberta Environment and Parks − Operations Division1601 Provincial Building, 10320–99 StreetGrande PrairieAB T8V 6J4CanadaABSTRACT Woodland caribou (Rangifer tarandus caribou) are threatened in Canada, with population and distribution declines evident in most regions of the country. Causes of declines are linked to landscape change from forest fires and human development, notably forestry oil and gas activities, which result in caribou habitat loss and affect ecosystem food webs. The Federal Species at Risk Act requires effective protection and restoration of caribou habitat, with actions to increase caribou survival. These requirements call for effective monitoring of caribou population trends to gauge success. Many woodland caribou populations are nearly impossible to count using traditional aerial survey methods, but demographic‐based monitoring approaches can be used to estimate population trends based on population modeling of vital rates from marked animals. Monitoring programs have used a well‐known simple population model (the Recruitment‐Mortality [R/M] equation) to estimate demographic rates for woodland caribou, but have faced challenges in managing large data streams and providing transparency in the demographic estimation process. We present a stand‐alone statistical software application using open‐source software to permit efficient, transparent, and replicable demographic estimation for woodland caribou populations. We developed an easy‐to‐use, interactive web‐based application for the R/M population model that uses a Bayesian estimation approach and provides the user flexibility in choice of prior distributions and other output features. We illustrate the web‐application to the A la Pêche Southern Mountain (Central Group) woodland caribou population in west‐central Alberta, Canada, during 1998–2017. Our estimates of population demographics are consistent with previous research on this population and highlight the utility of the application in assessing caribou population responses to species recovery actions. We provide example data, computer code, the web‐based application package, and a user manual to guide installation and use. We also review underlying assumptions and challenges of population monitoring in this case study. We expect our software will contribute to efficient monitoring of woodland caribou and help in the assessment of recovery actions for this species. © 2019 The Authors. Wildlife Society Bulletin Published by Wiley Periodicals, Inc.https://doi.org/10.1002/wsb.950computer softwareendangered speciesmonitoringRangifer tarandus caribouwoodland caribou |
| spellingShingle | Daniel R. Eacker Mark Hebblewhite Robin Steenweg Mike Russell Amy Flasko Dave Hervieux Web‐based application for threatened woodland caribou population modeling Wildlife Society Bulletin computer software endangered species monitoring Rangifer tarandus caribou woodland caribou |
| title | Web‐based application for threatened woodland caribou population modeling |
| title_full | Web‐based application for threatened woodland caribou population modeling |
| title_fullStr | Web‐based application for threatened woodland caribou population modeling |
| title_full_unstemmed | Web‐based application for threatened woodland caribou population modeling |
| title_short | Web‐based application for threatened woodland caribou population modeling |
| title_sort | web based application for threatened woodland caribou population modeling |
| topic | computer software endangered species monitoring Rangifer tarandus caribou woodland caribou |
| url | https://doi.org/10.1002/wsb.950 |
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