海洋生物多様性のグローバルパターンと予測指標は,各種の分類によって異なります
Derek P Tittensor1, Camilo Mora, Walter Jetz
1Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax B3H 4J1, Canada. derekt@mathstat.dal.ca
Nature
|July 30, 2010
まとめ
海洋生物の多様性は,世界的に異なっており,沿岸群は西太平洋でピークに達し,海洋群は中緯度でピークに達する. 海面温度は重要な予測要因であり,多様性の高い地域はしばしば人間の影響と重なり合っている.
科学分野:
- 海洋生態学 海洋生態学とは
- 生物多様性科学とは生物多様性に関する科学です.
- 保護生物学とは
背景:
- 世界的な種豊かさのパターンは,生態学,進化,保全にとって極めて重要です.
- 海洋多様性の理解は,陸上の研究に遅れ,陸上のパラダイムとの対比が浮上しています.
- 人為的な影響は,大規模な多様性パターンの分析を必要とする.
研究 の 目的:
- 多様な海洋分類群の種豊かさのグローバルなパターンと予測要因を検証する.
- 海洋生物多様性を形作る環境的,歴史的要因を特定する.
- 生物多様性の高い地域と人間の影響の重複を評価する.
主な方法:
- 13の主要な海洋種群 (動物プランクトンから海洋哺乳類) の世界的な種豊かさのデータを分析した.
- 多様性の主要な環境予測要因を特定するために空間回帰分析を使用した.
- 沿岸と海洋の種群の比較パターン.
主要な成果:
- 沿岸の種の豊かさは西太平洋でピークに達し,海洋群は中緯度の多様性帯を示した.
- 海面の気温は,13種すべてで多様性の最も一貫した予測指標でした.
- 海洋生物の多様性が高い地域は,人間の影響が大きい地域で不釣り合いにあった.
結論:
- 海面の温度は,分類を超えた海洋生物多様性の構造化において,根本的な役割を果たしています.
- 海洋温暖化やその他の人間の影響は,地球規模の海洋生物多様性の分布を大幅に変化させる可能性があります.
- 保護計画では,環境要因と人為的な圧力との相互作用を考慮する必要があります.
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