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Long-term Monitoring Projects

 River Wylye (Hampshire Avon)


River Wylye Electric fishing for graylingThe Wylye Project, led by Anton Ibbotson, Game and Wildlife Conservation Trust , is now in its 18th year. Rich Cove, Environment Agency, is collaborating with Dr Ibbotson to analyse the long-term data-set. Continued funding from Grayling Research Trust will depend on progress made to date and on future prospects.

GWCT Project Presentation



South Calder Water (River Clyde)


Clyde River Foundation electric fishing for graylingThe South Calder Water Project, led by Willie Yeomans of the Clyde River Foundation, is in its fourth year of Grayling Research Trust sponsorship. Sampling suggests that the population may be more unstable than had been anticipated. No grayling were caught in 2011 but young recruits appeared in 2012. Grayling Research Trust will therefore continue funding the project, which should provide a unique opportunity to monitor the recolonization dynamics of a population vulnerable to periodic crashes.



GS Symposium Speakers

GRT Funded MSc, PhD Studies

Two degree project interim reports were among presentations at the most recent Grayling Society symposium. Both studies are currently funded by the GRT and both operate on a premise that alongside the intrinsic value of grayling as a game fish, their survival challenges provide early indication of problems that are or will likely become problems for other salmonids.


Stephen Gregory (Game and Wildlife Conservation Trust) described an MSc study plan for statistical mining of the existing Wylye Study data, questioning the effect of extreme climate events on grayling population dynamics. He emphasized that the GWCT now leads all processing aspects of the 30-year Wylye Grayling Study (WGS) dataset - the longest and most complete in Europe...possibly in the world.


Vanessa Huml's (Manchester Metropolitan University) PhD study is titled Assessing adaptive genetic variation for effective management and conservation of European grayling. Read her description of planned work, noting reference to new sequencing technology and reference to the four U.K. genetically distinct groups identified in the earlier genetic census funded by the GRT.


The two studies both look at grayling population health/stability under extant environmental conditions but the doctoral work extends inquiry to genetic proclivity for survival ('evolvability').


Both investigators will submit detailed results for publication here after review in their respective peer literature.