Dive efficiency versus depth in foraging emperor penguins

Aquatic Biology

关键词: Emperor penguins;    Foraging depth;    Bottom dive duration;    Dive efficiency;   

DOI  :  10.3354/ab00213

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Dive duration generally decreases with dive depth in air-breathing vertebrates. In most penguin species, this occurs due to increasing transit (descent and ascent) durations. However, in U-shaped dives, this is also because the duration of the bottom phase of the dive increases with increasing depth. We considered the time-based efficiency with which birds can use different diving depths by using depth recorders on 9 foraging emperor penguins

【 授权许可】

CC BY