2023-03-07 カリフォルニア大学バークレー校(UCB)
カリフォルニア大学バークレー校の研究者らは、「30×30イニシアチブ」が、淡水生態系を過小評価していると指摘した。
彼らは、川、湖、湿地などの淡水生態系を計画に明示的に含める必要があり、その保全がイニシアチブの広い目標の達成に不可欠であると論じている。
淡水生態系は、陸地生態系に比べて不釣合いな割合で失われており、生物多様性の喪失や気候変動の影響に極めて脆弱である。この研究では、川の繋がり、流域の損傷、水量、水質、生物多様性といった５つの優先事項を中心に、淡水生態系を30×30イニシアチブに取り入れる方法を提唱している。
＜関連情報＞
- https://nature.berkeley.edu/news/2023/03/berkeley-researchers-present-plan-freshwater-conservation
- https://esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2573
30×30の保全活動を淡水生態系に集中的に取り組む Centering 30 × 30 conservation initiatives on freshwater ecosystems
Jessie A Moravek, Lucy R Andrews, Mitchell W Serota, Janelle A Dorcy, Melissa Chapman, Christine E Wilkinson, Phoebe Parker-Shames, Amy Van Scoyoc, Guadalupe Verta, Justin S Brashares
Frontiers in Ecology and the Environment Published: 07 March 2023
DOI:https://doi.org/10.1002/fee.2573
Abstract
Regional, national, and international 30 × 30 conservation initiatives would be strengthened by including a specific focus on freshwater ecosystem conservation that supplements terrestrial conservation strategies. Globally, freshwater habitats support essential biodiversity and ecosystem services, yet are being lost at disproportionately high rates relative to terrestrial systems. Making freshwater ecosystems an explicit focus of 30 × 30 initiatives would assist in curtailing these losses while advancing 30 × 30’s mission to address climate change, economic sustainability, food security, and equitable outdoor access across a variety of landscapes. Here, we explain how fresh water can serve as a key piece of 30 × 30 conservation efforts. We emphasize that to address the challenges of traditional area-based conservation programs, 30 × 30 should (1) focus on watershed-scale conservation planning and (2) evaluate conserved areas based on five freshwater priorities: connectivity, watershed disturbance, flow alteration, water quality, and biodiversity. We use examples from the US state of California to illustrate how addressing freshwater systems can help guide 30 × 30 conservation.
