季節と日々の気候の変動は,種の高さ範囲のサイズに逆の影響を及ぼします

Wei-Ping Chan¹, I-Ching Chen², Robert K Colwell³

¹Biodiversity Research Center, Academia Sinica, Taipei 11529, Taiwan.

Science (New York, N.Y.)

|March 26, 2016

まとめ

より高い標高でのより大きな気候の変動は,より広い温度耐性を有する種を好み,より広い地理的範囲につながります. しかし,より短期的な変動は,陸上の脊椎動物における生理学的専門性を好む可能性があります.

科学分野:

エコロジー
動物学
気候科学

背景:

気候の変動性仮説は,緯度や高さによる気候の変動性の増加が,より広い生物の温度耐性を選択することを示唆している.
このより広い許容範囲は,より広い地理的分布を可能にすると考えられています.

研究の目的:

陸上の脊椎動物の高度範囲の大きさを用いて気候の変動性仮説を検証する.
気候の変動とマントーン・グラデントにおける種の高さ帯域の大きさの関係を調査する.

主な方法:

16500種以上の地上の脊椎動物を分析した.
世界中で180の異なる山岳の傾斜からのデータを使用しました.
季節と毎日の気温変動の測定値と相関する範囲のサイズ.

主要な成果:

平均的な高さ範囲の大きさは季節的な温度変動と正の相関関係を示した.
高度範囲の大きさは,毎日の温度変動と負の相関を示した.
短期的な気候変動下で生理学的専門性を予測する生命史モデルと一致しています

結論:

季節的な気温変動と範囲の大きさに関する気候の変動性仮説を支持する.
日常の気温変動は,広範な耐性よりも,生理学的専門性を好む可能性があることを示唆している.
様々な気候の変動と種の適応の複雑な相互作用を強調しています

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