conference logo1 med





















Conservation & invasion across the British Isles

 17 – 19 August

 Giggleswick School, Settle, North Yorkshire 

We are pleased to announce that amongst the confirmed speakers are:

Julian Reynolds   Challenges for conservation of native crayfish, with a focus on Ireland (Keynote)

David Holdich       ICS, old NICS and new NICS in Europe (Keynote)

Paul Bradley         The biology of still water populations of white-clawed crayfish

Trevor Renals       Tackling INNS as a regulator with a focus on crayfish species: tools, techniques and expertise (Keynote)

Paul Stebbing       Long term field trials in a computer: how population models can help in the development of management strategies for invasive crayfish

Lenart Edsman     The rise and fall of signal crayfish in Sweden – population collapses in introduced NICS

Stephanie Peay    The costs and benefits of control of non-indigenous crayfish

Jonathan Grey      From tall tales of big fish to trophic cascades: using isotopes to study invasive crayfish biology

Alison Dunn          Parasites and biological invasions: interactions, parallels and control (Keynote)


Conference sessions will be organised into the following sessions:

  • Conservation of white-clawed crayfish in Britain and Ireland
  • Management of invasive non-indigenous crayfish
  • Ecology and impacts of non-indigenous crayfish
  • New invaders and biological interactions

The Fifth National Crayfish Conference will be held at Giggleswick in the Yorkshire Dales on 17 - 19 August 2015.  During the 6 years since the last conference, populations of native white-clawed crayfish have continued to decline across much of The British Isles, whilst the range of American signal crayfish continues to consolidate and expand.  Almost uniquely in Europe, Ireland currently remains free of invasive non-native crayfish.  Crayfish provide valuable case-studies of aquatic invasion, the challenges of management of non-native species and the conservation of native species faces with a range of environmental and biotic threats.


Traditional area-based conservation designations are failing to halt the decline of native crayfish, and in 2010 white-clawed crayfish was reclassified as “Endangered” on IUCN’s Red List of Endangered Species.  At the same time, American signal crayfish continue to be found in new areas, and additional INNS crayfish continue to be found in the wild.  Over the last 5 years, there has been growing evidence of the broader ecological and financial impacts of invasive non-native species, and INNS crayfish in particular.  Partly as a result of this, biosecurity is becoming an ever more important consideration, and Defra has introduced the Check-Clean-Dry campaign.

The EU has been working towards the development of a Strategy on Invasive Alien (Non-native) Species since 2008.  In 2014, The European Parliament agreed plans to prevent the introduction or halt the spread of invasive alien species.  New domestic legislation has been introduced in Ireland and Scotland, and the recent Law Commission review of wildlife law is expected to result in the most significant reform of species protection legislation in England and Wales since the creation of the Wildlife and Countryside Act in 1981.

The 2015 Crayfish Conference will bring together a broad range of researchers, practitioners, regulators and conservationists.  Whether you are interested in crayfish in particular, or the issues related to crayfish conservation and INNS invasion in general, this will be an unmissable national conference.   Based on the edge of the Yorkshire Dales within easy reach of a range of informative excursions, this will certainly be a highlight of the summer. 

Scientific Committee:

Julian Reynolds, David Holdich, Paul Stebbing, Alison Dunn, Stephanie Peay, Paul Bradley, Ian Marshall 


Organising Committee:

Stephanie Peay, Paul Bradley, Ian Marshall, Adam Ellis, Jen Nightingale, Elizabeth Judson



AET EA logos