Variations in band reporting rate and implications for kill rate in Greater Snow Geese
We assessed spatial and temporal variation in reporting probability of banded Greater Snow Geese (Chen caerulescens atlantica) shot by hunters in eastern North America and evaluated potential residual biases in kill rate estimation. Adult Greater Snow Geese were marked with reward (value: US$10, $20...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Resilience Alliance
2014-06-01
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| Series: | Avian Conservation and Ecology |
| Subjects: | |
| Online Access: | http://www.ace-eco.org/vol9/iss1/art1/ |
| _version_ | 1797970845155459072 |
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| author | Guillaume Souchay Olivier Gimenez Gilles Gauthier Roger Pradel |
| author_facet | Guillaume Souchay Olivier Gimenez Gilles Gauthier Roger Pradel |
| author_sort | Guillaume Souchay |
| collection | DOAJ |
| description | We assessed spatial and temporal variation in reporting probability of banded Greater Snow Geese (Chen caerulescens atlantica) shot by hunters in eastern North America and evaluated potential residual biases in kill rate estimation. Adult Greater Snow Geese were marked with reward (value: US$10, $20, $30, $50, and $100) and standard bands ($0, control) in the Canadian Arctic from 2003 to 2005. We used a spatially explicit multinomial model based on 200 direct recoveries from 4256 banded geese to estimate reporting rate and harvest rate. We found that reporting rate for standard bands varied over time whereas harvest rate was higher in Canada than in the U.S. The reporting probability increased from 0.40 ± 0.11 in the first year of the study to 0.82 ± 0.14 and 0.84 ± 0.13 the second and third years, respectively. Overall, these reporting rates are higher than two previous estimates for this population, which leads to lower estimates of kill rate. However, the large annual differences in reporting rates found in this study lead to uncertainty in the estimation of kill rate. We suggest that the increase in reporting rate in the last two year of the study may be due to the dissemination of information among hunters regarding the presence of reward bands on birds, resulting in increased reporting rate for all bands. This raises issues about the need to adequately inform the public in such large-scale studies to avoid undesirable temporal trends over the course of the study. |
| first_indexed | 2024-04-11T03:23:25Z |
| format | Article |
| id | doaj.art-37811ba43f004c04a8254754d60932be |
| institution | Directory Open Access Journal |
| issn | 1712-6568 |
| language | English |
| last_indexed | 2024-04-11T03:23:25Z |
| publishDate | 2014-06-01 |
| publisher | Resilience Alliance |
| record_format | Article |
| series | Avian Conservation and Ecology |
| spelling | doaj.art-37811ba43f004c04a8254754d60932be2023-01-02T08:13:56ZengResilience AllianceAvian Conservation and Ecology1712-65682014-06-0191110.5751/ACE-00628-090101628Variations in band reporting rate and implications for kill rate in Greater Snow GeeseGuillaume Souchay0Olivier Gimenez1Gilles Gauthier2Roger Pradel3Département de Biologie & Centre d'Études NordiquesCentre d'Écologie Fonctionnelle et Évolutive - UMR 5175Département de Biologie & Centre d'Études NordiquesCentre d'Écologie Fonctionnelle et Évolutive - UMR 5175We assessed spatial and temporal variation in reporting probability of banded Greater Snow Geese (Chen caerulescens atlantica) shot by hunters in eastern North America and evaluated potential residual biases in kill rate estimation. Adult Greater Snow Geese were marked with reward (value: US$10, $20, $30, $50, and $100) and standard bands ($0, control) in the Canadian Arctic from 2003 to 2005. We used a spatially explicit multinomial model based on 200 direct recoveries from 4256 banded geese to estimate reporting rate and harvest rate. We found that reporting rate for standard bands varied over time whereas harvest rate was higher in Canada than in the U.S. The reporting probability increased from 0.40 ± 0.11 in the first year of the study to 0.82 ± 0.14 and 0.84 ± 0.13 the second and third years, respectively. Overall, these reporting rates are higher than two previous estimates for this population, which leads to lower estimates of kill rate. However, the large annual differences in reporting rates found in this study lead to uncertainty in the estimation of kill rate. We suggest that the increase in reporting rate in the last two year of the study may be due to the dissemination of information among hunters regarding the presence of reward bands on birds, resulting in increased reporting rate for all bands. This raises issues about the need to adequately inform the public in such large-scale studies to avoid undesirable temporal trends over the course of the study.http://www.ace-eco.org/vol9/iss1/art1/Atlantic Flywayband recoveryGreater Snow Goosekill ratereporting ratereward bandspatial variationtemporal variationwaterfowl |
| spellingShingle | Guillaume Souchay Olivier Gimenez Gilles Gauthier Roger Pradel Variations in band reporting rate and implications for kill rate in Greater Snow Geese Avian Conservation and Ecology Atlantic Flyway band recovery Greater Snow Goose kill rate reporting rate reward band spatial variation temporal variation waterfowl |
| title | Variations in band reporting rate and implications for kill rate in Greater Snow Geese |
| title_full | Variations in band reporting rate and implications for kill rate in Greater Snow Geese |
| title_fullStr | Variations in band reporting rate and implications for kill rate in Greater Snow Geese |
| title_full_unstemmed | Variations in band reporting rate and implications for kill rate in Greater Snow Geese |
| title_short | Variations in band reporting rate and implications for kill rate in Greater Snow Geese |
| title_sort | variations in band reporting rate and implications for kill rate in greater snow geese |
| topic | Atlantic Flyway band recovery Greater Snow Goose kill rate reporting rate reward band spatial variation temporal variation waterfowl |
| url | http://www.ace-eco.org/vol9/iss1/art1/ |
| work_keys_str_mv | AT guillaumesouchay variationsinbandreportingrateandimplicationsforkillrateingreatersnowgeese AT oliviergimenez variationsinbandreportingrateandimplicationsforkillrateingreatersnowgeese AT gillesgauthier variationsinbandreportingrateandimplicationsforkillrateingreatersnowgeese AT rogerpradel variationsinbandreportingrateandimplicationsforkillrateingreatersnowgeese |