Time/depth usage of Adélie penguins: an approach based on dive angles
Time/depth usage of Adélie penguins: an approach based on dive angles
复制标题
阿德利企鹅的时间/深度使用：基于潜水角度的方法
DOI：
10.1007/s003000100235
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发表时间：
2001
期刊：
影响因子：
1.7
通讯作者：
Y. Naito
中科院分区：
文献类型：
--
作者：
Y. Ropert‐Coudert;A. Kato;J. Baudat;C. Bost;Y. le Maho;Y. Naito
1998/1999年夏季在南极阿德利地采集了3只阿德利企鹅（Pygoscelis adeliae）的游动速度、下潜深度和摄食率等数据。游泳速度可以与深度的变化率结合起来，以确定潜水和返回水面的角度。总体而言，鸟类增加的变化率的深度在通勤阶段，使潜水角度陡峭的潜水终止在更大的深度。下降和上升的角度在喂养潜水大于在非喂养潜水。下降角随时间的变化一般小于10°，但上升阶段的角度变化更大。选择最佳的下降和上升角度的重要性，相对于猎物的开发，氧气储存和时间获得的喂养区在潜水过程中，潜水在一个陡峭的角度进行了讨论。
Data on the swim speed, dive depth and feeding rates of three Adélie penguins (Pygoscelis adeliae) foraging in summer 1998/1999 in Adélie Land, Antarctica were collected using dorsally-mounted loggers, in tandem with oesophageal temperature sensors. Swim speed could be integrated, together with the rate of change of depth, to determine dive and return-to-surface angles. Overall, birds increased rates of change of depth during commuting phases so that dive angles were steeper in dives terminating at greater depths. Angles of descent and ascent during feeding dives were greater than during non-feeding dives. Variation in the descent angle over time of particular dives was generally less than 10°, but the angles of the ascent phases varied more widely. The importance of selecting the optimum descent and ascent angles with respect to prey exploitation, oxygen stores and time gained in the feeding area over the course of a dive by diving at a steeper angle is discussed.