気候と食糧供給に関連した深海のコミュニティ構造の変化
Henry A Ruhl1, Kenneth L Smith
1Marine Biology Research Division, Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093-0202, USA. hruhl@ucsd.edu
Science (New York, N.Y.)
|July 27, 2004
まとめ
太平洋北東部の深海のメガファウナは,エルニーニョ/ラニーニャの気候現象 (1997年-1999年) と関連した地域社会の大きな変化を経験しました. 種の豊富さは劇的に変化し,気候の気候を示しています.
科学分野:
- 深海の生態学 深海の生態学
- マリン・バイオロジーの海洋生物学
- 気候変動の影響は,気候変動の影響です.
背景:
- エピベンティックメガファウナのコミュニティは,深海に住んでいます.
- 東北太平洋は,海洋生態系の研究の重要な地域である.
- エルニーニョ/ラニーニャ現象は,世界の気象パターンに影響を与える主要な気候変動です.
研究 の 目的:
- エピベンティックメガファウナのコミュニティ構造の変化を調査する.
- 気候の変動,特にエルニーニョ/ラニーニャ現象と野生の変動を相関させるため.
- 気候の変動が深海の生物多様性に与える影響を評価する.
主な方法:
- エピベンティックメガファウナの写真による豊富な推定値が使用されました.
- データ収集は1989年から2002年まで,4,100メートルの深さで行われた.
- 統計分析は,動物の変化と気候データとの相関関係を示した.
主要な成果:
- エピベンティックメガファウナの主要なコミュニティ構造の変化が観察されました.
- 2つの分類は,1998年以降,2〜3桁の減少を示した.
- 他のいくつかの種は,エルニーニョ/ラニーニョと相関して,1〜2度の増加を示した.
結論:
- 深海のメガファウナは,現代の気候の変動に敏感です.
- 観察された動物界の変化は,エルニニョ/ラニニャ現象の影響を強調しています.
- 長期的な時間的視点は,深海の生物多様性と影響を理解するために不可欠です.
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