Monitoring variability of marine environment by using top predators as observational platforms.

使用顶级捕食者作为观测平台监测海洋环境的变化。

• 批准号: 09680497
• 负责人: WATANUKI Yutaka
• 金额: $ 1.92万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680497/
• 关键词: marine environment; monitoring; seabirds; Foraging; biotelemetry

Marine top predators will be efficient tools to monitor variability of marine environment at fine scale. To make them observational platforms and evaluate its feasibility, we measured ambient temperature, diving behavior and foraging location of auks and cormorants by biotelemetry techniques. A review study of dive duration in auks and penguins, researches on at sea foraging behavior of Japanese cormorants and Brunnich's Guillemots, and a 5 year work on diet and breeding success of Rhinoceros Aukiets suggest that ; 1) physiological constraints should be considered, 2) measurement of individual variation in foraging behavior is recommended, 3) conventional long term works on breeding biology are sometimes very useful, 4) simultaneous measurements of foraging behavior and physical environments could tell us fine scale response of predator.

海洋顶级捕食者将成为监测海洋环境精细尺度变化的有效工具。利用生物遥测技术对海雀和鸬鹚的环境温度、潜水行为和觅食位置进行了测量，以建立观测平台并评估其可行性。通过对海雀和企鹅潜水时间的回顾研究，对日本鸬鹚和海鸠在海上觅食行为的研究，以及对犀牛海雀5年的饮食和繁殖成功的研究表明；1)应考虑生理限制；2)建议测量觅食行为的个体差异；3)传统的长期繁殖生物学研究有时是非常有用的；4)同时测量觅食行为和物理环境可以告诉我们捕食者的精细尺度反应。