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The role of biodiversity in Welsh rivers


A team led by Cardiff University has recieived a major research award, to investigate the importance of river organisms to the function and economic value of Wales’ river ecosystems.


The investigation will range from small catchments around Llyn Brianne in central Wales to the whole Welsh uplands. The team will look at the role played by biodiversity in preserving the quality and wildlife of Welsh rivers and the many livelihoods that depend upon them.


Named DURESS (Diversity of Upland Rivers for Ecosystem Service Sustainability), the £3 million project forms part of the £13 million Natural Environment Research Council (NERC) Biodiversity and Ecosystem Services Sustainability (BESS) initiative. BESS is investigating the role of biodiversity in maintaining and improving ecosystem services – goods and functions provided by nature on which peoples’ lives and livelihoods depend.


At a time when rivers face critical challenges from changing land use and climate, DURESS aims to:


• quantify how river organisms might regulate water quality, enhance fish production and underpin culturally valuable assets such as fishing or river birds


• determine how river ecosystem services are affected by changes in land use and climate


• address how resilient river ecosystems are to changes over time from months to decades.


Wales was considered ideal for the project because its rivers are particularly highly valued for water supply, biodiversity and recreation such as sport fisheries. The country is extremely rich in the


types of scientific data required and excellent river science is already well established. Cardiff University last year led the freshwater aspects of the UK Government National Ecosystem Assessment, making it an ideal candidate to take forward this research.


The world's only specialist aquatic song-bird, the dipper Cinclus cinclus, will be a focus of the DURESS project


Researchers from the University’s School of Biosciences and Sustainable Places Research Institute will lead a team of around 30 scientists also including Lancaster University, Queen Mary University London and Aberystwyth; the British Trust for Ornithology; the NERC Centre for Ecology and Hydrology, Forest Research and NHS Wales; and the specialist freshwater consultancy, APEM Ltd. The consortium is headed by Dr Isabelle Durance, senior research fellow in Cardiff’s Sustainable Places Research Institute, who spearheaded the proposal. "We all need clean water, and the UK water infrastructure is valued at over £200 billion," said Dr Isabelle Durance. "Yet, we so often overlook the value of the catchments that supply our water. Even more, we overlook the processes carried out by billions of river organisms that together help to maintain water quality. These same organisms are part of an intricate web of life that fuels everything from Atlantic salmon to dippers and otters, yet we still know very little of how different parts of this web fit and function together."


The pioneering project has already won active support from a wide range of partners, including the Welsh Government, Environment Agency, Countryside Council for Wales, Forestry Commission, Dwr Cymru/Welsh Water, the RSPB and the Welsh Rivers’ Trusts (Afonydd Cymru). Welsh communities will also be consulted widely during the project.


Head of Cardiff School of Biosciences and Chair of the Biological Sciences panel for the Research Excellence Framework, Professor Ole Petersen said "Wales’ rivers are a major asset to its population. This is a vitally important ecological and environmental project which will have a bearing on people’s lives and livelihoods."


Isabelle Durance and Steve Ormerod. 32


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