Winter 2013-2014 PRT Volunteers Riverfly Monitoring Results


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The Pembrokeshire ‘Summary’…

It was interesting to see that there is still the “Orange Spot” parasite present in the Gammarus at St Catherines Bridge. We also found them ourselves during an investigation of Rudbaxton Water just upstream of the confluence upstream of the PRT monitoring site on the Western Cleddau, so this is obviously a bit of a hotspot for Thorny Headed Worms! The site on the Syfynwy at Gelli Bridge had less invertebrates than usual, but most of the sensitive groups were present, indicating a possibility of washout from the recenty high flows than a water quality problem. This result on the Gamman is very poor, probably due to a combination of organic inputs and recent abnormally high flows. The Pembrokeshire EM team are aware of this issue and are planning a series of farm visits throughout the Gamman catchment over the next couple of months.


The Cleddau Trail Map

The Pembrokeshire Rivers Trust Cleddau Trail takes you on two 'Source to Sea' river journeys. Follow the Western Cleddau Trail to discover unspoilt natural habitats, home to migratory salmon and sewin, kingfishers and other wildlife. The Eastern Cleddau Trail follows the flow of Pembrokeshire's rainwater as it becomes drinking water.


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