生物多様性の保全インデックスです
1CSIR Environmentek, PO Box 395, Pretoria, 0001, South Africa. bscholes@csir.co.za
Nature
|March 4, 2005
まとめ
新しい生物多様性保全指数 (BII) は,世界の生物多様性損失を追跡するのに役立ちます. 南アフリカでは,人口は2000年までに近代以前の84%まで減少し,哺乳類と草原が最も影響を受けた.
科学分野:
- エコロジー エコロジー エコロジー
- 保護生物学の保護生物学
- 環境科学 環境科学
背景:
- グローバルな生物多様性の喪失は,環境の重要な懸念事項である.
- 国際的な目標は,生物多様性の損失率を減らすことを目的としています.
- 進歩を評価するには,実用的で敏感な指標が必要です.
研究 の 目的:
- 生物多様性目標に向けた進展を評価するために,生物多様性保全指数 (BII) を提案する.
- シンプルで実用的で,生物多様性の状態に敏感なメトリックを開発する.
- 保護活動の政策的関連性を確保する.
主な方法:
- 生物多様性の無傷性指数 (BII) の開発.
- BIIの適用は,南アフリカの大きな地域 (4 x 10 ⋅ 6 km2) に適用される.
- 人口減少の分析は,分類学的なグループと生態系タイプの間で行われます.
主要な成果:
- 2000年の南アフリカにおけるBIIスコアは約84%でした.
- これは,植物と脊椎動物の平均の人口が,近代化以前の水準の84%にまで減少したことを示しています.
- 哺乳類は最大の損失 (71%) を示し,草原は最下位の無傷度 (74%) を示した.
- 1990年代には人口が0.8%減少したと推定されている.
結論:
- BIIは,生物多様性の状態と保全目標に向けた進展を監視するための貴重なツールです.
- 南アフリカは2000年までに,特に哺乳類と草原の生物多様性に大きな損失を経験しました.
- 継続的なモニタリングは,生物多様性の減少を理解し,軽減するために不可欠です.
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