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関連する概念動画

What is Climate?01:16

What is Climate?

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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.
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Global Climate Change01:50

Global Climate Change

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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.
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Threats to Biodiversity01:50

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There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
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Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
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気候変動による絶滅の危険性

Chris D Thomas1, Alison Cameron, Rhys E Green

  • 1Centre for Biodiversity and Conservation, School of Biology, University of Leeds, Leeds LS2 9JT, UK. c.d.thomas@leeds.ac.uk

Nature
|January 9, 2004
PubMed
まとめ
この要約は機械生成です。

気候変動は種の生存を脅かしており,平均的な温暖化により15~37%が2050年までに絶滅すると予測されている. 緊急の排出削減と炭素吸収は,生物多様性の損失を軽減するために不可欠です.

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科学分野:

  • エコロジー エコロジー エコロジー
  • 気候科学 気候科学
  • 保護生物学の保護生物学

背景:

  • 気候変動は,過去30年間にわたり,種分布と豊富さを明らかに変化させました.
  • 記録されている1つの種の絶滅は,気候変動の影響と関連している.
  • 将来の絶滅のリスクを評価することは,積極的な保全戦略にとって極めて重要です.

研究 の 目的:

  • 将来の気候変動のシナリオの下で,様々な種の絶滅のリスクを予測する.
  • 異なる陸上地域において絶滅の危機に瀕している種の割合を定量化する.
  • 地理的な範囲の大きさと絶滅の確率との関係を評価する.

主な方法:

  • 異なる気候シナリオの下での範囲のシフトを予測するために,種の分布モデルを使用した.
  • 絶滅の確率を推定するために3つの異なる分析方法を使用した.
  • 種の移動能力を考慮するために,2つの分散シナリオを組み込みました.

主要な成果:

  • 2050年の気候温暖化の中期シナリオでは,サンプリングされた種の15~37%が絶滅の危機に瀕していると予測されています.
  • 最小温暖化シナリオでは,約18%の種が絶滅の危機に瀕していると予測されています.
  • 温暖化シナリオの増加は,絶滅予測の上昇と相関しており,最大変化下で約35%に達する.

結論:

  • 絶滅率の予測は,気候変動が世界の生物多様性に対する深刻な脅威を強調しています.
  • 結論は,温室効果ガス排出量の即時かつ実質的な削減の必要性を強調しています.
  • 効果的な炭素結合戦略の実施は,将来の絶滅のリスクを減らすために不可欠です.