Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource
Mobility and irruptive movements have been proposed as mechanisms that could allow some diet specialists to inhabit and breed in environments with highly unpredictable resources, like the arctic tundra. The snowy owl, one of the main avian predators of the tundra, is known to specialize on lemmings...
Published in: | Journal of Avian Biology |
---|---|
Main Authors: | , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2014
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/jav.00426 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjav.00426 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.00426 |
id |
crwiley:10.1111/jav.00426 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/jav.00426 2024-04-28T08:08:44+00:00 Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource Therrien, J.‐F. Gauthier, G. Pinaud, D. Bêty, J. the Dept of Indian and Northern Affairs Canada the Natural Sciences and Engineering Research Council of Canada the Nunavut Wildlife Management Board the Fond Québécois de Recherche sur la Nature et les Technologies the network of Center of Excellence ArcticNet the Garfield-Weston Foundation the Fonds Richard-Bernard the Centre d’Études Nordiques Univ. Laval Univ. du Québec à Rimouski Univ. of Saskatchewan 2014 http://dx.doi.org/10.1111/jav.00426 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjav.00426 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.00426 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Avian Biology volume 45, issue 6, page 536-544 ISSN 0908-8857 1600-048X Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2014 crwiley https://doi.org/10.1111/jav.00426 2024-04-08T06:52:53Z Mobility and irruptive movements have been proposed as mechanisms that could allow some diet specialists to inhabit and breed in environments with highly unpredictable resources, like the arctic tundra. The snowy owl, one of the main avian predators of the tundra, is known to specialize on lemmings during the breeding season. These small mammals are also well known for their tremendous spatial and temporal variations in abundance. We examined the spring (pre‐breeding, from March to June) movements of snowy owls by tracking 9 breeding females in the Canadian Arctic for up to 3 yr with satellite transmitters. We used state‐space modeling to assess searching behavior and measure breeding dispersal distances. We also ascertain lemming abundance at some of the sites used by the marked owls. Tracked owls displayed searching movements for extended periods (up to 108 d) and traveled over large distances (up to 4093 km) each spring. The distance between furthest apart searching areas in a given year averaged 828 km (range 220 to 2433 km). Settlement date, distance between searching areas, traveled distance and the duration of prospecting movements were longer in the year where density of lemmings recorded in the eastern High‐Arctic (Bylot Island) was lowest. Nonetheless, snowy owls settled in areas where local lemming abundance was relatively high. Individual breeding dispersal distance between consecutive years averaged 725 km (range 18 to 2224). Overall, the high mobility of female snowy owls allowed these diet specialists to behave as irruptive migrants and to sustain their reproductive activities during consecutive years even under highly fluctuating resources. Article in Journal/Newspaper Arctic Bylot Island snowy owl Tundra Wiley Online Library Journal of Avian Biology 45 6 536 544 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Therrien, J.‐F. Gauthier, G. Pinaud, D. Bêty, J. Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Mobility and irruptive movements have been proposed as mechanisms that could allow some diet specialists to inhabit and breed in environments with highly unpredictable resources, like the arctic tundra. The snowy owl, one of the main avian predators of the tundra, is known to specialize on lemmings during the breeding season. These small mammals are also well known for their tremendous spatial and temporal variations in abundance. We examined the spring (pre‐breeding, from March to June) movements of snowy owls by tracking 9 breeding females in the Canadian Arctic for up to 3 yr with satellite transmitters. We used state‐space modeling to assess searching behavior and measure breeding dispersal distances. We also ascertain lemming abundance at some of the sites used by the marked owls. Tracked owls displayed searching movements for extended periods (up to 108 d) and traveled over large distances (up to 4093 km) each spring. The distance between furthest apart searching areas in a given year averaged 828 km (range 220 to 2433 km). Settlement date, distance between searching areas, traveled distance and the duration of prospecting movements were longer in the year where density of lemmings recorded in the eastern High‐Arctic (Bylot Island) was lowest. Nonetheless, snowy owls settled in areas where local lemming abundance was relatively high. Individual breeding dispersal distance between consecutive years averaged 725 km (range 18 to 2224). Overall, the high mobility of female snowy owls allowed these diet specialists to behave as irruptive migrants and to sustain their reproductive activities during consecutive years even under highly fluctuating resources. |
author2 |
the Dept of Indian and Northern Affairs Canada the Natural Sciences and Engineering Research Council of Canada the Nunavut Wildlife Management Board the Fond Québécois de Recherche sur la Nature et les Technologies the network of Center of Excellence ArcticNet the Garfield-Weston Foundation the Fonds Richard-Bernard the Centre d’Études Nordiques Univ. Laval Univ. du Québec à Rimouski Univ. of Saskatchewan |
format |
Article in Journal/Newspaper |
author |
Therrien, J.‐F. Gauthier, G. Pinaud, D. Bêty, J. |
author_facet |
Therrien, J.‐F. Gauthier, G. Pinaud, D. Bêty, J. |
author_sort |
Therrien, J.‐F. |
title |
Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
title_short |
Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
title_full |
Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
title_fullStr |
Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
title_full_unstemmed |
Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
title_sort |
irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1111/jav.00426 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjav.00426 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.00426 |
genre |
Arctic Bylot Island snowy owl Tundra |
genre_facet |
Arctic Bylot Island snowy owl Tundra |
op_source |
Journal of Avian Biology volume 45, issue 6, page 536-544 ISSN 0908-8857 1600-048X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jav.00426 |
container_title |
Journal of Avian Biology |
container_volume |
45 |
container_issue |
6 |
container_start_page |
536 |
op_container_end_page |
544 |
_version_ |
1797577392049356800 |