皇帝ペンギンと気候変動
1Centre d'Etudes Biologiques de Chizé, Centre National de la Recherche Scientifique, Villiers en Bois, France. barbraud@tour-du-valat.com
Nature
|May 11, 2001
まとめ
帝王ペンギンの個体数は,温暖な海と海氷の減少に関連した成人の生存率の減少のために50%減少しました. これは,皇帝ペンギンであるペンギンを強調しています.
科学分野:
- マリン・バイオロジーの海洋生物学
- 気候科学 気候科学
- エコロジー エコロジー エコロジー
背景:
- 海洋と大気間の相互作用は,南洋の海氷と生態系に大きな影響を与える.
- 海洋捕食動物に対する気候変動の影響を予測するには,長期的な人口統計データが必要です.
- 皇帝ペンギン (Aptenodytes forsteri) は,環境の変化に敏感な南極の主要な捕食動物です.
研究 の 目的:
- 海洋学的な変化が帝王ペンギンに及ぼす長期的な人口学的影響を調査する.
- 海氷の広がり,海面温度,ペンギンの生存と繁殖の関係を分析する.
主な方法:
- 帝王ペンギンの人口統計パラメータ (50年以上) の利用可能な最も長いタイムシリーズを使用しました.
- 歴史的な海面温度と海氷の範囲データと相関した人口変化.
- 性別と環境条件に基づいて死亡率と生殖成功の差異を分析した.
主要な成果:
- テレ・アデリエの皇帝ペンギンの個体数は50年間で50%減少しました.
- 大人の生存率の大幅な減少は,1970年代後半に海氷が減少した暖かい期間に起こった.
- 死亡率の増加は,暖かい海面温度と海氷の範囲の減少と関連しており,雄の割合は高かった.
結論:
- 大規模な海洋学過程と海氷の動態は,帝王ペンギンの人口統計に強く影響を与えます.
- 皇帝ペンギンは,気候変動の影響に対して高い感受性を表しています.
- 環境の変化は,帝王ペンギン集団の長期的な生存に重大な脅威をもたらす.
関連する概念動画
01:07What is Weather?
17.2K
Overview
17.2K
01:16What is Climate?
17.5K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
17.5K
01:50Global Climate Change
24.4K
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.
24.4K
01:27Pressure and Volume in an Adiabatic Process
2.5K
Free expansion of a gas is an adiabatic process. However, there are few differences between free expansion and adiabatic expansion. During free expansion, no work is done, and there is no change in internal energy. But, for an adiabatic expansion, work is done, and there is a change in internal energy. During an adiabatic process, the relation between the pressure and volume is obtained from the condition for the adiabatic process, that is,
2.5K
01:18Variation of Atmospheric Pressure
3.6K
Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
3.6K
01:27Microbes and Climate Change
88
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
88