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Extended Riverfly - monitoring the impacts of siltation and low flows upon freshwater invertebrates

Chris Extence and Richard Chadd from the Lincolnshire and Northamptonshire Environment Agency have developed a new scoring system based on an augmented list of aquatic invertebrates to extend the Riverfly Monitoring Initiative surveying model.
To implement the new system the Lincolnshire Chalk Streams Project with their partners at the Environment Agency have been working with their existing Riverfly volunteers to pilot the project on Lincolnshire’s chalk streams in the Lincolnshire Wolds AONB.
Existing volunteers were given a days training by Richard Chadd and Chris Extence hosted by the Lincolnshire Chalk Streams Project, first to emphasise the key problems with local rivers, then to demonstrate how the identification of particular invertebrates can highlight issues such as poor water quality, sedimentation and low flows.
The surveying method remains the same, a kick sample is taken at an allocated river section every month by volunteers and invertebrates are collected, numbers estimated and recorded. The list of invertebrates has been extended to 26 from 8 to give a more in depth evaluation of the issues within the river. The 8 key invertebrates on the standard Riverfly Partnership list are included on the new list.
To record the data, shared GoogleDoc spreadsheets have been used. For more information regarding the project please contact the Lincolnshire Chalk Streams Project.

Web – www.lincolnshirechalkstreams.org

Email – chalkstreams@lincolnshire.gov.uk

Facebook - @LincolnshireChalkStreams

Twitter - @LincChalkStream

Phone – 01522 555783

Click here to access the presentation which William Bartle and John Boulton delivered at the 4th National Riverfly Partnership Conference.