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アレウト,海,そして代替的な安定状態のコミュニティです
まとめ
アムチッカ島のアレウト族の獲物は,2500年にわたって劇的に変化した. この変化は,アレウト族の海の過剰搾取によるものであって,文化的食習慣の変化によるものではなかった.
科学分野:
- パレオエコロジー (古生態学)
- 考古学考古学とは
- 海洋生態学 海洋生態学
背景:
- アムチタカ島にある史前アレウト族のミッドンは,長期間続いた野生動物の変化を明らかにしている.
- アレウト島の近岸生態系には,マクロ藻類またはエピベンチク型の草食動物が支配する2つの安定した状態があります.
- 海の個体数は,これらの生態系状態に重大な影響を及ぼします.
研究 の 目的:
- 2500年以上にわたる,史前のアレウト族の獲物選択を再検討する.
- アレウト族の食生活における観察された変化の要因を調査する.
- 動物界の変化を古生態学的データと相関させるため.
主な方法:
- アレウト族の真ん中からの層状の動物遺跡の分析.
- アレウト島の近海コミュニティに関する生態学的研究と野生動物のデータを比較.
- 捕食者と獲物のダイナミクスの生態学的モデリング.
主要な成果:
- アレウト族の獲物における重要な変化は,2500年の占領期間中に確認された.
- 野生生物の移転は,海の存在または不在に関する生態学的要件と相関しています.
- 証拠は,先住民のアレウト族による地元の海の過剰搾取を示唆しています.
結論:
- アレウトの獲物の組成の変化は,海の個体数の動態を反映している.
- 食生活の変化は,文化的好みではなく,生態学的要因,特に海の利用可能性によって引き起こされた.
- アボリジニのアレウト族の狩猟慣行は,地元の海の減少につながり,近岸の生態系に影響を与えた可能性が高い.
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