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Posted by on Jun 18, 2014 in News, Trust Activities | 0 comments

Winter 2013-2014 PRT Volunteers Riverfly Monitoring Results

Winter 2013-2014 PRT Volunteers Riverfly Monitoring Results


Click here to download in PDF format

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.


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