| | Using radiotelemetry to monitor cardiac response of free-living tule greater white-fronted geese (anser albifrons elgasi) to human disturbance.: An article from: Wilson Bulletin |  | Authors: Joshua T. Ackerman, John Y. Takekawa, Kammie L. Kruse, Dennis L. Orthmeyer, Julie L. Yee, Craig R. Ely, David H. Ward, Karen S. Bollinger, Daniel M. Mulcahy
Publisher: Wilson Ornithological Society
Category: Book
Buy New: $5.95
Format: Html
Media: Digital
Pages: 12
ASIN: B0009GN02K
Publication Date: June 1, 2004
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This digital document is an article from Wilson Bulletin, published by Wilson Ornithological Society on June 1, 2004. The length of the article is 3445 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: We monitored the heart rates of tree living Tule Greater White fronted Geese (Anser albifrons elgasi) during human disturbances on their wintering range in the Sacramento Valley of California during 1997. We used implanted radio transmitters to record the heart rates of geese as an observer experimentally approached them at a constant walking speed. On average, geese flushed when observers were 47 m (range: 25-100 m) away. Change point regression was used to identify the point in time when heart rate abruptly increased prior to flushing and when heart rate began to level off in flight after flushing. Heart rates of geese increased as the observer approached them during five of six disturbance trials, from 114.1 [+ or -] 6.6 beats/min during the observer's initial approach to 154.8 [+ or -] 7.4 beats/min just prior to flushing at the first change point. On average, goose heart rates began to increase most rapidly 5 sec prior to taking flight, and continued to increase rapidly for 4 sec after flushing until reaching flight speed. Heart rate was 456.2 [+ or -] 8.4 beats/min at the second change point, which occurred immediately after flushing, and 448.3 [+ or -] 9.5 heats/min 1 min later during flight. Although goose heart rates increased as an observer approached, the largest physiological change occurred during a 9-sec period (range: 1.0 15.7 sec) immediately before and after flushing, when heart rates nearly tripled. Received 28 October 2003. accepted 12 April 2004.
Citation Details
Title: Using radiotelemetry to monitor cardiac response of free-living tule greater white-fronted geese (anser albifrons elgasi) to human disturbance.
Author: Joshua T. Ackerman
Publication: Wilson Bulletin (Refereed)
Date: June 1, 2004
Publisher: Wilson Ornithological Society
Volume: 116 Issue: 2 Page: 146(6)
Distributed by Thomson Gale
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