接続性の保護は,生物多様性と漁業の保存を成功させる
Luisa Fontoura1, Stephanie D'Agata1,2,3, Majambo Gamoyo4
1Department of Earth and Environmental Sciences, Macquarie University, Sydney, NSW 2109, Australia.
まとめ
接続されたサンゴ礁のネットワークを保護することは,生物多様性の保全と持続可能な漁業の支援に不可欠です. 魚の生体質と回復力を高めながらも 大抵は保護されていないままです
科学分野:
- 海洋生態学
- 保護生物学
- 漁業科学
背景:
- 世界のサンゴ礁の減少は 生物多様性の保全と 漁業の利益のバランスをとる戦略を 求めています
- 珊瑚礁が提供する生態系サービスの空間的な生態学に関する知識のギャップは大きい.
研究 の 目的:
- 珊瑚礁のネットワークにおける生態系サービスの提供における接続性の重要性を調査する.
- 珊瑚礁の回復力を評価するために,幼虫の散布に関する空間データを人間の圧力推定値と組み合わせる.
主な方法:
- 幼虫の空間的分散ネットワークの分析
- 珊瑚礁に対する人間の圧力の見積もり
- 魚の種類と生物量との相関関係
- 保護下でのサンゴ礁の回復力の評価
主要な成果:
- 魚類の種類が豊富だった.
- ラバル"シンク"は"ソース"と比較して魚のバイオマスが2倍であり,保護されたときに人間の圧力に対するより大きな抵抗力がありました.
- 現在,重要な分散回廊,シンク,源礁の70%は保護されていない.
結論:
- 接続性はサンゴ礁の生物多様性と漁業を維持する上で重要な要素です
- 魚類の保存と持続可能な漁業のためには 魚類のネットワーク,特に幼虫の集水場を保護することが不可欠です
- 重要なサンゴ礁のネットワークを守るために 保護区を緊急に拡大する必要があります
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