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Poor correlation be...
Poor correlation between large-scale environmental flow violations and freshwater biodiversity : implications for water resource management and the freshwater planetary boundary
- Article/chapterEnglish2022
Publisher, publication year, extent ...
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2022-12-13
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Copernicus GmbH,2022
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:su-213832
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-213832URI
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https://doi.org/10.5194/hess-26-6247-2022DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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The freshwater ecosystems around the world are degrading, such that maintaining environmental flow (EF) in river networks is critical to their preservation. The relationship between streamflow alterations (subsequent EF violations2) and the freshwater biodiversity response is well established at the scale of stream reaches or small basins (~< 100 km2). However, it is unclear if this relationship is robust at larger scales, even though there are large-scale initiatives to legalize the EF requirement. Moreover, EFs have been used in assessing a planetary boundary for freshwater. Therefore, this study intends to conduct an exploratory evaluation of the relationship between EF violation and freshwater biodiversity at globally aggregated scales and for freshwater ecoregions. Four EF violation indices (severity, frequency, probability of shifting to a violated state, and probability of staying violated) and seven independent freshwater biodiversity indicators (calculated from observed biota data) were used for correlation analysis. No statistically significant negative relationship between EF violation and freshwater biodiversity was found at global or ecoregion scales. These findings imply the need for a holistic bio-geo-hydro-physical approach in determining the environmental flows. While our results thus suggest that streamflow and EF may not be the only determinant of freshwater biodiversity at large scales, they do not preclude the existence of relationships at smaller scales or with more holistic EF methods (e.g., including water temperature, water quality, intermittency, connectivity, etc.) or with other biodiversity data or metrics
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Gleeson, Tom
(author)
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Famiglietti, James S.
(author)
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Virkki, Vili
(author)
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Kummu, Matti
(author)
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Porkka, Miina
(author)
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Wang-Erlandsson, LanStockholms universitet,Stockholm Resilience Centre,Bolincentret för klimatforskning (tills m KTH & SMHI),Potsdam Institute for Climate Impact Research (PIK), Germany(Swepub:su)051lanwan
(author)
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Huggins, Xander
(author)
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Gerten, Dieter
(author)
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Jähnig, Sonja C.
(author)
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Stockholms universitetStockholm Resilience Centre
(creator_code:org_t)
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In:Hydrology and Earth System Sciences: Copernicus GmbH26:23, s. 6247-62621027-56061607-7938
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Mohan, Chinchu
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Gleeson, Tom
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Famiglietti, Jam ...
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Virkki, Vili
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Kummu, Matti
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Porkka, Miina
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Wang-Erlandsson, ...
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Huggins, Xander
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Gerten, Dieter
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Jähnig, Sonja C.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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Stockholm University