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The Riverfly Partnership

The Riverfly Partnership is a dynamic network of organisations, representing anglers, conservationists, entomologists, scientists, water course managers and relevant authorities, working together to: - protect the water quality of our rivers; - further the understanding of riverfly populations; - and actively conserve riverfly habitats. The Riverfly Partnership is hosted by the Freshwater Biological Association.

New Brown Trout Discovered at Loch Laidon

A new type of brown trout has been discovered at Loch Laidon in Perthshire. Researchers used systematic sampling techniques and DNA analysis to identify four types of brown trout living in the loch that are genetically, ecologically and morphologically distinct from one another.  

The deep water, bottom feeder or 'profundal benthivore' is new to science. Similar quartets have been observed in other species such as the Arctic charr, but never for brown trout. The profundal benthivore is paler than the other trout in the loch, and has much larger eyes and mouth.  

The findings present exciting possibilities about the diversity of freshwater lakes in the Northern hemisphere. 

'Findings such as those for Loch Laidon may well be the tip of a biodiversity iceberg in Scottish and other northern lakes, the true size of this iceberg will only become clear once we study more lakes using methods such as those we employed'. - Professor Verspoor

The four brown trout types from Loch Laidon

The study was conducted through the Rivers and Lochs Institute at UHI Inverness College by Professor Eric Verspoor, Mark Coulson, Ronald Greer and David Knox. The paper was published in the journal Freshwater Biology and can be accessed online here.

Volunteers Help To Monitor Rare Chalk Streams

Experts from the Environment Agency recently delivered a training session via the Riverfly Partnership to ARMI monitors on the Great Eau, a rare chalk stream in Lincolnshire. 

Chalk streams are almost exclusively found in England. They feature aquifers that give rise to clean and clear water. Their unique geology and conditions support a vast array of wildlife. 

The Lincolnshire chalk streams project now has an incredible 42 volunteers surveying at 34 key sites in and around the Lincolnshire Wolds AONB. 

The work achieved by volunteers has proved invaluable for reporting non-native species and for monitoring recovery following pollution events in the area. 

It's absolutely fantastic that so many volunteers are willing to dedicate their time to monitoring the chalk streams, and to learn how to survey riverflies- a vital part of the delicate chalk stream ecosystem.

-Will Bartle, monitoring officer, Lincolnshire Chalk Streams Project 

For more details, including how to get involved in next seasons training event, please click here. 

Join the Hunt for the Northern February red stonefly in Scotland

Help Buglife Scotland to map the rivers in which the Northern February red stonefly (Brachyptera putata) lives (Scotland). More info HERE

'Insect declines: new alarm over mayfly is ‘tip of iceberg’, warn experts'

Click HERE to read Damian Carrington's full article (The Guardian, 11th January 2017) about impacts of low level pollution on mayfly egg survival in many English rivers; includes comment from Paul Knight, Salmon & Trout Conservation CEO, and Dr Nick Everall, Aquascience Consultancy Limited. Further evidence of the crucial role that ARMI volunteers and partners have to play in protecting our rivers. 

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