A.L.I.E.N. databases: addressing the lack in establishment of non-natives databases

in Crustaceana
Restricted Access
Get Access to Full Text
Rent on DeepDyve

Have an Access Token?

Enter your access token to activate and access content online.

Please login and go to your personal user account to enter your access token.


Have Institutional Access?

Access content through your institution. Any other coaching guidance?


Among the principal threats to the conservation of global biodiversity are biological invasions. To monitor their range expansion and develop control programmes, comprehensive, national species’ databases need to be created and maintained. This is particularly important for invaders that are known to cause broad and significant ecological problems, such as decapod crustaceans, in particular crayfish. Initiatives such as the U.K. National Biodiversity Network have recognised the need to promote data exchange and are a valuable resource for collating individual survey records. However, for these data to be used efficiently for research and/or management purposes they need to be combined into national databases. This is challenging and time consuming as individual data-sets are typically in different formats. Here, we compile 25 459 non-native and native crayfish records (reported between 1870 and 2013) from England, Wales and Scotland into one database, CrayBase. Such national databases will help facilitate risk assessments for non-native species and promote conservation strategies for indigenous species by identifying populations under the greatest threat from invasives.


International Journal of Crustacean Research



BerryS., 1988. Biological survey: need & network: report of a working party set up by the Linnean Society of London. (PNL Press, London).

ClaveroM.García-BerthouE., 2005. Invasive species are a leading cause of animal extinctions. Trends in Ecology and Evolution, 20: 110.

DudgeonD.ArthingtonA. H.GessnerM. O.KawabataZ.-I.KnowlerD. J.LévêqueC.NaimanR. J.Prieur-RichardA.-H.SotoD.StiassnyM. L. J.SullivanC. A., 2006. Freshwater biodiversity: importance, threats, status and conservation challenges. Biological Reviews, 81: 163-182.

FreemanM. A.TurnbullJ. F.YeomansW. E.BeanC. W., 2010. Prospects for management strategies of invasive crayfish populations with an emphasis on biological control. Aquatic Conservation: Marine and Freshwater Ecosystems, 20: 211-223.

GeigerW.AlcorloP.BaltanásA.MontesC., 2005. Impacts of an introduced crustacean on trophic webs of Mediterranean wetlands. Biological Invasions, 7: 49-73.

HenshallM., 2012. National biodiversity network update. Bulletin of the British Ecological Society, 43(3): 21-23.

HoldichD. M.JamesJ.JacksonC.PeayS., 2014. The North American signal crayfish, with particular reference to its success as an invasive species in Great Britain. Ethology, Ecology and Evolution, 26: 232-262.

JohnsonM. F.RiceS. P.ReidI., 2010. Topographic disturbance of subaqueous gravel substrates by signal crayfish (Pacifastacus leniusculus). Geomorphology, 123: 269-278.

LodgeD. M.TaylorC. A.HoldichD. M.SkurdalJ., 2000. Nonindigenous crayfishes threaten North American freshwater biodiversity: lessons from Europe. Fisheries, 25: 7-20.

PeayS.HileyP. D., 2005. Signal crayfish are probably unstoppable. In: Rotherham, I. D. (ed.) Loving the Aliens??!!?. Journal of Practical Ecology and Conservation Special Series: 48-50.

WhitehouseA. T.PeayS.KindembaV., 2009. Ark sites for white-clawed crayfish — guidance for the aggregates industry. Available online at http://www.buglife.org.uk/sites/default/files/Crayfish%20Ark%20sites%20guidance_0.pdf (accessed 28 January 2014).

WilcoveD. S.RothsteinD.DubowJ.PhillipsA.LososE., 1998. Threats to imperilled species in the United States. BioScience, 48: 607-615.


  • Distributions of native and invasive crayfish in the U.K. (positive records only). Historical distributions, presented in the upper panel, show records prior to 1991. Current distributions, shown in the lower panel, represent all records in the database with the exception of the native white-clawed crayfish which only shows those from 2009-2013, as these are the only populations that we can be confident still exist. Other invasive species include Turkish, noble, spiny-cheek, virile, red swamp and white river crayfish. For all maps each marker represents a single record (although many individual records have the same grid reference and are overlaid).

    View in gallery


Content Metrics

Content Metrics

All Time Past Year Past 30 Days
Abstract Views 10 10 6
Full Text Views 6 6 6
PDF Downloads 0 0 0
EPUB Downloads 0 0 0