講演情報
[3-E1-02]Drowning biodiversity: The impact of water consumption on global riverine fish species
*Islam Kamrul1、Pierrat Eleonore2、Verones Francesca3、Pfister Stephan4、Motoshita Masaharu1 (1. Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology, Japan、2. Quantitative Sustainability Assessment Division, Department of Environmental and Resource Engineering, Technical University of Denmark、3. Industrial Ecology Programme, Department of Energy and Process Engineering, Norwegian University of Science and Technology、4. Institute of Environmental Engineering, ETH Zürich)
キーワード：
Water Consumption、Biodiversity、Riverine fish species、Global watersheds、Characterization factor
Human activities in the Anthropocene have quadrupled global water demand, leading to significant harm to freshwater ecosystems, including an 84% decline in freshwater species populations. Though freshwater habitats cover just 0.01% of Earth’s surface, they support 9.5% of known animal species. River systems face growing threats from altered water flow, with 65% of global river discharge under moderate to high risk, yet biodiversity conservation efforts remain limited due to data gaps. Life Cycle Assessment (LCA) methodologies increasingly address ecosystem damage, with water consumption playing a critical role. This study evaluates biodiversity loss in global riverine fish species using characterization factors based on species-discharge relationships across various river basins. Our analysis identifies crops like maize, wheat, and rice as major contributors to biodiversity loss, with maize showing the highest potential species disappearance (PDF value ~0.0022 global.year). These results highlight the urgent need for improved water management to safeguard riverine biodiversity.