Global water consumption impacts on riverine fish species richness in Life Cycle Assessment
Visualitza/Obre
Autor/a
Pierrat, Eleonore
Barbarossa, Valerio
Scherer, Laura
Link, Andreas
Damiani, Mattia
Verones, Francesca
Dorber, Martin
Data de publicació
2022-09-13ISSN
0048-9697
Resum
Reduced river discharge and flow regulation are significant threats to freshwater biodiversity. An accurate representation of potential damage of water consumption on freshwater biodiversity is required to quantify and compare the environmental impacts of global value chains. The effect of discharge reduction on fish species richness was previously modeled in life cycle impact assessment, but models were limited by the restricted geographical scope of underlying species-discharge relationships and the small number of species data. Here, we propose a model based on a novel regionalized species-discharge relationship (SDR). Our SDR-based model covers 88 % of the global landmass (2320 river basins worldwide excluding deserts and permanently frozen areas) and is based on a global dataset of 11,450 riverine fish species, simulated river discharge, elevation, and climate zones. We performed 10-fold cross-validation to select the best set of predictors and validated the obtained SDRs based on observed discharge data. Our model performed better than previous SDRs employed in life cycle impact assessment (Kling-Gupta efficiency coefficient about 4 times larger). We provide both marginal and average models with their uncertainty ranges for assessing scenarios of small and large-scale water consumption, respectively, and include regional and global species loss. We conducted an illustrative case study to showcase the method's applicability and highlight the differences with the currently used approach. Our models are useful for supporting sustainable water consumption and riverine fish biodiversity conservation decisions. They enable a more specific, reliable, and complete impact assessment by differentiating impacts on regional riverine fish species richness and irreversible global losses, including up-to-date species data, and providing spatially explicit values with high geographical coverage.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
502 - Natura. Estudi, conservació i protecció de la natura
Pàgines
12
Publicat per
Elsevier
Publicat a
Science of the Total Environment
Citació
Pierrat, Eleonore, Valerio Barbarossa, Montserrat Núñez, Laura Scherer, Andreas Link, Mattia Damiani, Francesca Verones, and Martin Dorber. 2023. "Global Water Consumption Impacts On Riverine Fish Species Richness In Life Cycle Assessment". Science Of The Total Environment 854: 158702. doi:10.1016/j.scitotenv.2022.158702.
Programa
Sostenibilitat en Biosistemes
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