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Updated: Jun 13, 2026

07:54
Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
Published on: March 9, 2021
気候変動によるカモメの多様性の侵食と,変化した熱的ニッチによる侵食
Barry Sinervo1, Fausto Méndez-de-la-Cruz, Donald B Miles
1Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064, USA. lizardrps@gmail.com
まとめ
気候変動は,トカゲの絶滅の原因となっている. 1975年以来,メキシコのトカゲの集団の12%が絶滅し,世界の予測では,将来の損失が大きいことが示されています.
科学分野:
- エコロジー エコロジー エコロジー
- 気候変動 生物学
- ヘルペトロジー ヘルペトロジー
背景:
- 気候変動は,種の大規模な絶滅と,種の分布の変化を引き起こすと予測されています.
- これらの予測を検証する経験的データは,特に爬虫類のようなエクトーマーについて,依然として稀です.
- ワニは気温の変化に敏感で,気候変動の影響の重要な指標となっています.
研究 の 目的:
- メキシコのトカゲの地元集団に対する気候変動の影響を評価する.
- 観察データを用いて絶滅リスクの生理学的モデルを検証する.
- 世界的に種の将来の絶滅のリスクを予測する.
主な方法:
- メキシコの200か所にある48種のトカゲの最近の調査データと過去の調査データの比較.
- 絶滅のリスクを予測するために生理学的モデルを利用した.
- 4つの大陸の地域バイオタで観測された局所的な絶滅と検証された地球規模絶滅予測.
主要な成果:
- メキシコでは1975年以来,12%のの個体種が絶滅しています.
- 観察された絶滅は,生理学的モデルからの予測と一致しています.
- 世界的な見積もりでは,1975年以来,現地の人口の4%が絶滅しており,2080年までに39%が絶滅すると予測されています.
- 種の絶滅率は2080年までに20%に達する可能性がある.
結論:
- ワニの個体数は,すでに気候変動により,地域的に顕著な絶滅を経験しています.
- 観察された絶滅率は,トカゲが気候変動による絶滅の臨界点を越えたことを示唆している.
- この調査結果は,生物多様性に対する気候変動の影響を軽減するための保全戦略の緊急の必要性を強調しています.
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