After a 22-year absence the critically endangered stonefly Isogenus nubecula has been rediscovered in the River Dee in North Wales by John Davy-Bowker of the Freshwater Biological Association. Click here to read more.
With kind permission of its authors the Riverfly Partnership is pleased to share the following paper which compares macroinvertebrate data for river health assessment gathered using semi-quantitative (kick/sweep sampling) and quantitative (surber sampling) methodologies.
Full citation: Everall N, Johnson MF, Wood P, Farmer A, Wilby RL and Measham N. (2017) Comparability of macroinvertebrate biomonitoring indices of river health derived from semi-quantitative and quantitative methodologies. Ecological Indicators 78: 437 - 448. DOI 10.1016/j.ecolind.2017.03.040
Freshwater Communities and the Riverfly Partnership
The Freshwater Biological Association is to become the Riverfly Partnership host from April 2017. (Click title above to access full press release).
The Common Clubtail dragonfly (Gomphus vulgatissimus) is listed as Near Threatened on the British Red List.
