Gwent-Glamorgan Recorders' Newsletter Issue 6 Spring 2012

Page 1

Greater Gwent Biodiversity Action Group

Glamorgan Biodiversity Advisory Group

Gwent-Glamorgan Recorders’ Newsletter Issue 6—Spring May 2012

Invasive shrimp in South Wales

links to D. villosus infected areas, if it provides suitable habitat for D. villosus (e.g. artificial hard surfaces, boulder and cobble shorelines), and sites with known zebra mussel Dreissena polymorpha populations (as it is thought that the musdistinctive cones sel beds provide suitable habitat and even D. villosus showing distinctive cones © Environment Agency food for D.villosus, Dikerogammarus villosus, commonly which feed on the faeces and bysuss known as invasive or killer shrimp, was threads of the mussels). It was during found for the first time in UK waters in this dedicated monitoring, that the recent September 2010, at Grafham Water, Barton Broad record was made. Cambridgeshire. This was followed by D.villosus originates from the Pontodiscoveries in November 2010 at Cardiff Record rainfall in April and a wet Caspian region in Eastern Europe, and Bay and Eglwys Nunydd Reservoir, Port start to May has meant that recordwith the opening of the Rhine-Danube Talbot. In March 2012, a fourth populaing some taxonomic groups has canal, has spread to Western Europe in tion was found at Barton Broad SSSI, been difficult. Hopefully the weaththe last 15 years. It kills a range of native Norfolk Broads. er will improve soon so that we can species such as shrimp, insect larvae all get out and start recording in the Following the initial sighting, extensive and young fish (up to 40mm in size). It sunshine! Enjoy the newsletter! monitoring has been carried out in Engtends to dominate the habitats it invades, land and Wales at over 4300 sites sometimes causing the extinction of naRebecca Davies (Editor) (general and targeted monitoring) to tive species. check other locations where D. villosus D. villosus usually has a striped back, Inside this issue: might be present, by the Environment but can be more uniform in colour. The Agency, Environment Invasive shrimp in South Wales 1-2 Agency Wales, CountrySEWBReC News 3-4 side Council for Wales, Shrill Carder Bees 5 Natural England and waBSBI in Monmouthshire VC35 5 ter companies. The tarChanging Times 6-7 geted D.villosus monitoring, using traps, is being Spotlight on a Recorder: Steve Bolchover 7 carried out at ~300 priority Parc Slip Wildlife Survey 8 or high risk sites Dormice Monitoring 9-10 (including 40 sites in Bees for Everyone 10 South East Wales and 22 Sustrans’ Wildlife Champions 11 sites in South West Wales). The criteria for Wanted: Orchard Survey Volunteers 12 high risk sites includes 12 WBP—Book Award Fund whether a site is used for D. villosus trap (using cat food as bait and deployed overnight to Biodiversity Blitzes & Go Wild events 13-14 water recreation, or has Welcome to the sixth issue of the Gwent-Glamorgan Recorders’ Newsletter. It’s another jam-packed issue and starting us off is an article on the invasion of the ‘killer shrimp’ (Dikerogammerus villosus) in South Wales (p1-2). Bees are very much flavour of the season with Gwent Wildlife Trust’s Shrill Carder Bee project (p5), and The Bee Conservation Trust’s Bees for Everyone project (p10). Steve Bolchover reveals what inspired him to become a beetle recorder (p7); and any herpetofauna recorders will be interested in the research carried out by Cardiff University and WTSWW about the optimal tile size for sampling populations (p8).

SEWBReC 2012 Training Courses

14

capture this largely nocturnal species) © Environment Agency


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.
Gwent-Glamorgan Recorders' Newsletter Issue 6 Spring 2012 by SEWBReC - Issuu