Three hundred years of past and future changes for native fish species in the upper Danube River Basin—Historical flow alterations versus future climate change
Year: 2024
Type: article
Abstract: Aim Rivers belong to the most threatened ecosystems on Earth. Historical anthropogenic alterations have, and future climate change will further affect rivers and the species therein. While many studies have projected climate change effects on species, little is known about the severity of these changes compared to historical alterations. Here, we used a unique 300‐year time series of hydrological and climate data to explore the vulnerability of 48 native fish species in the upper Danube River Basin to past and potential future environmental changes. Location Upper Danube River Basins (Germany and Austria). Methods We applied a climate niche factor analysis and calculated species‐specific vulnerability estimates based on modelled and observed hydrological and climate data from 1800 to 2100. We compared the estimated species vulnerabilities between two historical time intervals (1800–1830 and 1900–1930) and a future time interval (2070–2100, including the two representative concentration pathways 4.5 and 8.5) to an observed reference time interval (1970–2000). In addition, we identified the main environmental drivers of species vulnerability and their change over the past 200 years and for the predicted 100 years in the future. Results Our results showed that (i) in the past, species vulnerability was mainly driven by changes in discharge, while (ii) future potential vulnerabilities would be due to temperature. Moreover, we found that (iii) future environmental conditions for riverine fish species driven by temperature would change at a similar magnitude as past hydrological changes, driven by anthropogenic river alterations. Future changes, projected for the RCP 4.5, would result in moderate species vulnerability, whereas for the RCP 8.5, the vulnerability for all species would substantially increase compared to the historical conditions. Main Conclusion Accounting for an extended timeline uncovers the extent of historical pressures and provides unprecedented opportunities to proactively plan conservation strategies that are necessary to address future challenges.
Source: Diversity and Distributions
DOI: 10.1111/ddi.13808
Institutions: Helmholtz Centre for Environmental Research, German Centre for Integrative Biodiversity Research, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Freie Universität Berlin, Friedrich Schiller University Jena, Norwegian Institute for Water Research, Basque Centre for Climate Change, University of Otago, BOKU University, Wasser Cluster Lunz, AFRY (Austria), Humboldt-Universität zu Berlin
Language: English
Subfield: Nature and Landscape Conservation
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,120
Funders: Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung, European Commission, Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Christian Doppler Forschungsgesellschaft, Bundesministerium für Digitalisierung und Wirtschaftsstandort, Deutsches Zentrum für integrative Biodiversitätsforschung Halle-Jena-Leipzig, Horizon 2020 Framework Programme, HORIZON EUROPE Framework Programme, Leibniz-Gemeinschaft, H2020 Marie Skłodowska-Curie Actions, H2020 Environment
Awards: G1200557423, GLANCE - Auswirkungen des globalen Wandels auf Fließgewässerökosysteme, G204579599, G211635838, G2172093834, G2189472788, Knowledge, Assessment, and Management for AQUAtic Biodiversity and Ecosystem Services aCROSS EU policies (AQUACROSS), G2916289761, Knowledge, Assessment, and Management for AQUAtic Biodiversity and Ecosystem Services aCROSS EU policies (AQUACROSS), G4252717812, G434337789, G4617990, G4937468798, NFDI4BioDiversität – Biodiversität, Ökologie und Umweltdaten, G5632166549, G6101651683, FZT 118: Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv), G6137186116, G6540631079, SAfeguarding Biodiversity and Ecosystem seRvices by integrating CULTURAL values in freshwater management: learning from Māori, SAfeguarding Biodiversity and Ecosystem seRvices by integrating CULTURAL values in freshwater management: learning from Māori, G7358480839, Biodiversity of Freshwater Ecosystems: Status, Trends, Pressures, and Conservation Priorities, RESTORATION OF THE DANUBE RIVER BASIN WATERS FOR ECOSYSTEMS AND PEOPLE FROM MOUNTAINS TO COAST, G8663450563
OpenAlex ID: W4390915670