A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones
Effective management of animal populations requires knowledge of life history parameters and estimates of population abundance. One method commonly used to estimate abundance is capture–recapture analyses of photographs. Small, relatively inexpensive, rotary-wing drones have become an effective plat...
Published in: | Journal of Unmanned Vehicle Systems |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/juvs-2021-0027 https://cdnsciencepub.com/doi/full-xml/10.1139/juvs-2021-0027 https://cdnsciencepub.com/doi/pdf/10.1139/juvs-2021-0027 |
id |
crcansciencepubl:10.1139/juvs-2021-0027 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/juvs-2021-0027 2023-12-17T10:27:39+01:00 A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones Koski, William R. Young, Brent G. 2022 http://dx.doi.org/10.1139/juvs-2021-0027 https://cdnsciencepub.com/doi/full-xml/10.1139/juvs-2021-0027 https://cdnsciencepub.com/doi/pdf/10.1139/juvs-2021-0027 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Drone Systems and Applications volume 10, issue 1, page 15-25 ISSN 2564-4939 Control and Optimization Electrical and Electronic Engineering Control and Systems Engineering Automotive Engineering Aerospace Engineering Computer Science Applications journal-article 2022 crcansciencepubl https://doi.org/10.1139/juvs-2021-0027 2023-11-19T13:39:13Z Effective management of animal populations requires knowledge of life history parameters and estimates of population abundance. One method commonly used to estimate abundance is capture–recapture analyses of photographs. Small, relatively inexpensive, rotary-wing drones have become an effective platform for obtaining high-quality aerial photographs of whales. To conduct capture–recapture analyses the animal needs to be defined as marked or unmarked and the photographs must be of high quality. While a system for scoring quality and markedness has previously been developed for bowhead whales (Balaena mysticetus Linnaeus, 1758) ( Rugh et al. 1998 . Rep. int. Whal. Commn. 48: 501–512), a revised scoring system was needed to incorporate increased information in photographs taken by drones. We present a revised scoring system that enlarges two of the previously defined areas of the whale examined for markings and incorporates smaller markings into the definition of marked whales. We scored 30 whales using the previous criteria and the revised criteria developed in this paper. More whales were identified as marked (23%) and mark scores were higher for 30% of the zones scored using the new system. Increasing the number of marked whales during capture–recapture studies increases the precision of estimated parameters and permits us to make those estimates with smaller samples of photographs. Article in Journal/Newspaper Balaena mysticetus Canadian Science Publishing (via Crossref) Journal of Unmanned Vehicle Systems |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Control and Optimization Electrical and Electronic Engineering Control and Systems Engineering Automotive Engineering Aerospace Engineering Computer Science Applications |
spellingShingle |
Control and Optimization Electrical and Electronic Engineering Control and Systems Engineering Automotive Engineering Aerospace Engineering Computer Science Applications Koski, William R. Young, Brent G. A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
topic_facet |
Control and Optimization Electrical and Electronic Engineering Control and Systems Engineering Automotive Engineering Aerospace Engineering Computer Science Applications |
description |
Effective management of animal populations requires knowledge of life history parameters and estimates of population abundance. One method commonly used to estimate abundance is capture–recapture analyses of photographs. Small, relatively inexpensive, rotary-wing drones have become an effective platform for obtaining high-quality aerial photographs of whales. To conduct capture–recapture analyses the animal needs to be defined as marked or unmarked and the photographs must be of high quality. While a system for scoring quality and markedness has previously been developed for bowhead whales (Balaena mysticetus Linnaeus, 1758) ( Rugh et al. 1998 . Rep. int. Whal. Commn. 48: 501–512), a revised scoring system was needed to incorporate increased information in photographs taken by drones. We present a revised scoring system that enlarges two of the previously defined areas of the whale examined for markings and incorporates smaller markings into the definition of marked whales. We scored 30 whales using the previous criteria and the revised criteria developed in this paper. More whales were identified as marked (23%) and mark scores were higher for 30% of the zones scored using the new system. Increasing the number of marked whales during capture–recapture studies increases the precision of estimated parameters and permits us to make those estimates with smaller samples of photographs. |
format |
Article in Journal/Newspaper |
author |
Koski, William R. Young, Brent G. |
author_facet |
Koski, William R. Young, Brent G. |
author_sort |
Koski, William R. |
title |
A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
title_short |
A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
title_full |
A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
title_fullStr |
A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
title_full_unstemmed |
A new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
title_sort |
new scoring system for use in capture–recapture studies for bowhead whales photographed with drones |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/juvs-2021-0027 https://cdnsciencepub.com/doi/full-xml/10.1139/juvs-2021-0027 https://cdnsciencepub.com/doi/pdf/10.1139/juvs-2021-0027 |
genre |
Balaena mysticetus |
genre_facet |
Balaena mysticetus |
op_source |
Drone Systems and Applications volume 10, issue 1, page 15-25 ISSN 2564-4939 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/juvs-2021-0027 |
container_title |
Journal of Unmanned Vehicle Systems |
_version_ |
1785579569405755392 |