Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska
We monitored radio-equipped (n = 50) and neck-collared (n = 205) lesser Canada geese (Branta canadensis parvipes) during August through October 1996 in Anchorage, Alaska, to ascertain local patterns of movement and post-molt dispersal; to identify geese from molting sites that frequent Elmendorf Air...
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ftunivnebraskali:oai:digitalcommons.unl.edu:icwdm_usdanwrc-1805 2023-11-12T04:15:26+01:00 Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska York, Darryl Cummings, John Wedemeyer, Kate 2000-04-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/icwdm_usdanwrc/807 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/1805/viewcontent/York_NN_2000_Movements.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/icwdm_usdanwrc/807 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/1805/viewcontent/York_NN_2000_Movements.pdf USDA Wildlife Services - Staff Publications Environmental Sciences text 2000 ftunivnebraskali 2023-10-30T10:34:15Z We monitored radio-equipped (n = 50) and neck-collared (n = 205) lesser Canada geese (Branta canadensis parvipes) during August through October 1996 in Anchorage, Alaska, to ascertain local patterns of movement and post-molt dispersal; to identify geese from molting sites that frequent Elmendorf Air Force Base (EAFB); and to evaluate the effectiveness of hazing at EAFB. Telemetry data and visual observations of collared geese indicated 59% of geese observed at EAFB were from molting sites ≤10 km from EAFB. We observed 93 marked geese from 11 molting sites 1 or more times in the EAFB airdrome, and 63% of geese observed >2 times on EAFB were from molting sites ≤10 k m from EAFB. A significant direct relationship was found between proportion of geese invading the EAFB airdrome and the distance molting sites were located from EAFB. After attaining flight, geese from the northeast and northwest quadrants of Anchorage initially moved greater distances from molt sites to feeding sites than geese from other parts of Anchorage. Intensive hazing proved effective in preventing 67% of marked geese from returning to the exclusion zone. However, hazed geese dispersed only 3.53 ± 0.2 k m from the exclusion zone. Most observations of marked geese at EAFB occurred during afternoon from 1200 through 1759 hr. Although hazing efforts provided an increased measure of flying safety, we suggest that managing geese at the spatial level of the entire city will be more successful at reducing danger to aircraft. Text Branta canadensis Alaska University of Nebraska-Lincoln: DigitalCommons@UNL Anchorage Canada |
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Open Polar |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Environmental Sciences |
spellingShingle |
Environmental Sciences York, Darryl Cummings, John Wedemeyer, Kate Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska |
topic_facet |
Environmental Sciences |
description |
We monitored radio-equipped (n = 50) and neck-collared (n = 205) lesser Canada geese (Branta canadensis parvipes) during August through October 1996 in Anchorage, Alaska, to ascertain local patterns of movement and post-molt dispersal; to identify geese from molting sites that frequent Elmendorf Air Force Base (EAFB); and to evaluate the effectiveness of hazing at EAFB. Telemetry data and visual observations of collared geese indicated 59% of geese observed at EAFB were from molting sites ≤10 km from EAFB. We observed 93 marked geese from 11 molting sites 1 or more times in the EAFB airdrome, and 63% of geese observed >2 times on EAFB were from molting sites ≤10 k m from EAFB. A significant direct relationship was found between proportion of geese invading the EAFB airdrome and the distance molting sites were located from EAFB. After attaining flight, geese from the northeast and northwest quadrants of Anchorage initially moved greater distances from molt sites to feeding sites than geese from other parts of Anchorage. Intensive hazing proved effective in preventing 67% of marked geese from returning to the exclusion zone. However, hazed geese dispersed only 3.53 ± 0.2 k m from the exclusion zone. Most observations of marked geese at EAFB occurred during afternoon from 1200 through 1759 hr. Although hazing efforts provided an increased measure of flying safety, we suggest that managing geese at the spatial level of the entire city will be more successful at reducing danger to aircraft. |
format |
Text |
author |
York, Darryl Cummings, John Wedemeyer, Kate |
author_facet |
York, Darryl Cummings, John Wedemeyer, Kate |
author_sort |
York, Darryl |
title |
Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska |
title_short |
Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska |
title_full |
Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska |
title_fullStr |
Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska |
title_full_unstemmed |
Movements and Distribution of Radio-Collared Canada Geese in Anchorage, Alaska |
title_sort |
movements and distribution of radio-collared canada geese in anchorage, alaska |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2000 |
url |
https://digitalcommons.unl.edu/icwdm_usdanwrc/807 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/1805/viewcontent/York_NN_2000_Movements.pdf |
geographic |
Anchorage Canada |
geographic_facet |
Anchorage Canada |
genre |
Branta canadensis Alaska |
genre_facet |
Branta canadensis Alaska |
op_source |
USDA Wildlife Services - Staff Publications |
op_relation |
https://digitalcommons.unl.edu/icwdm_usdanwrc/807 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/1805/viewcontent/York_NN_2000_Movements.pdf |
_version_ |
1782332736030113792 |