护卫舰鸟在几个月的跨海飞行中追踪大气状况
Henri Weimerskirch1, Charles Bishop2, Tiphaine Jeanniard-du-Dot3
1Centre d'Etudes Biologiques de Chizé, CNRS, 79360 Villiers en Bois, France. UMR 9220 ENTROPIE, Université de la Réunion, Saint Denis, La Réunion. henriw@cebc.cnrs.fr.
概括
大型护卫鸟利用大气条件进行长时间的飞行, 在云层中翔, 利用有利的风来实现长达数月的跨海航行, 最少的能量消耗.
科学领域:
- 动物行为和能量
- 鸟类的飞行动态
- 大气科学和动物迁徙
背景情况:
- 了解动物对大气条件的反应是研究飞行策略和长途迁徙的关键.
- 大型护卫鸟 (Fregata minor) 进行广泛的跨海飞行,需要高效的能源管理.
研究的目的:
- 在长途飞行中研究大型护卫鸟的三维运动和能量.
- 解释这些鸟类如何利用大气条件进行持续的空中运动.
主要方法:
- 追踪大型护卫鸟的三维运动和能量消耗.
- 分析与大气现象的飞行模式,如风,对流和云层形成.
主要成果:
- 大型护卫鸟可以在空中飞行数月,
- 它们采用"过山车"的飞行策略,
- 鸟类在云层中飞翔, 达到高达4000米的高度,
结论:
- 大型护卫舰鸟对大气条件有着显著的适应性, 能够长时间飞越海洋.
- 它们复杂的飞行策略,包括登云层和追踪风, 在迁徙过程中尽量减少能源成本.
相关概念视频
Migration
9.0K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
9.0K
Latitudes and Departures
716
Latitudes and departures are essential concepts in surveying, providing a systematic way to analyze the projections of traverse lines. These projections allow surveyors to interpret a line's north-south and east-west components, which are crucial for precisely calculating areas, bearings, and lengths. Latitude is the north-south projection of a line, calculated as the product of the line's length and the cosine of its bearing. Departure, conversely, is the east-west projection obtained by...
716
Azimuths and Bearings
843
Azimuths and bearings are essential concepts in surveying, providing methods to express the direction of a line relative to a meridian. Azimuths refer to the clockwise angle measured from the north end of a reference meridian to the given line, ranging from zero to 360 degrees. This method gives a comprehensive directional reference within a full 360-degree circle, making it a straightforward way to communicate direction in various fields, including navigation, cartography, and...
843
Optimal Foraging
14.2K
How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
14.2K
Global Climate Change
29.6K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.6K


