Response of river invertebrate indices to hydrological drought indicator

Laize, Cedric; Barker, Lucy ORCID:; Edwards, Francois; Hannaford, Jamie ORCID: 2020 Response of river invertebrate indices to hydrological drought indicator. In: 6th IAHR Europe Congress, Warsaw, Poland, 30 June - 2nd July 2020.

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Relationship between a drought-oriented streamflow index and a series of riverine biological indicators have been investigated at c. 80 sites in England and Wales in order to assess: (i) the impact of drought conditions on river ecosystems; (ii) whether the streamflow index could be used successfully as an early-warning indicator of drought impact on river ecosystems. Results show some significant albeit limited response to drought conditions as well as antecedent conditions (eg flow indicator 6 months before, 12 months before). Overall, when flow conditions are drier, biological indicators decrease. Decrease magnitude varies greatly and at some sites, the actual ecological impact is limited. There is some significant but limited patterns of the biological indicator response slope to flow in terms of catchment characteristics.

Item Type: Publication - Conference Item (Paper)
UKCEH and CEH Sections/Science Areas: Water Resources (Science Area 2017-)
NORA Subject Terms: Hydrology
Date made live: 08 Feb 2023 10:04 +0 (UTC)

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