Riverfly Recording Schemes...Trichoptera (Caddisflies) Plecoptera (Stoneflies) Ephemeroptera...
Transcript of Riverfly Recording Schemes...Trichoptera (Caddisflies) Plecoptera (Stoneflies) Ephemeroptera...
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Riverfly Recording SchemesIan Wallace of the Caddis Recording Scheme
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• Act as ‘champions’
• Encourage recording
• Research and Conservation
Trichoptera (Caddisflies) Plecoptera (Stoneflies)
Ephemeroptera (Mayflies)
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Affiliated to:
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Stoneflies (Craig Macadam)
• On NBN up to 2005
• 71,000 entries
• Mainly EA and SEPA
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Mayflies (Craig Macadam)
• On NBN up to 2017
• 232,000 entries
• Mainly EA and SEPA
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Caddis (Ian Wallace)
• On NBN to 2012
• 263,000 (on NBN)
• Current data base
“nearly ready for NBN”
440,000
Many data sources
under a half EA or SEPA
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Looking ok?
• Yes but…
• EA cuts could decimate a highly effective multi—talented workforce and considerably reduce number of new records
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Distribution Atlas of European Trichoptera (DAET)
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Triaenodes ochreellus
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Status Reviews
2015 2016 2016
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Status Reviews
• Conservation status using IUCN criteria
• Based on analysis of numbers not hunches
• Justified searches for rare and data deficient species
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Riverfly enthusiasts
• Willing to travel to see, then to look for elsewhere
• Very high quality ‘twitching’
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Isogenus nubecula
Extinct? No, re-discovered 2017 at its only UK site, the River Dee, North Wales
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Potamanthus luteus
Now found widespread in the River Severn
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Ironoquia dubia
First larvae seen in UK for over 40 years
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Brachyptera putata
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Electrogena affinis
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Adicella filicornis
Dramatic increase in numbers of living people who have knowingly seen this alive In the UK 1975 (1) 1985 (2) 2014 (3) 2018 (6)
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Ylodes simulans
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Riverfly Recording SchemesAnnual meeting
• 2016 – Windermere
• 2017 – Rowardennan
• 2018 – Wyre Forest
• 2019 – Malham
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Increase recording by improving identification resources
• More and better quality
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Test Guideto Identifying Caddis
AdultsFor use with photographs and live specimens
by
Ian Wallace and Sharon Flint, assisted by Peter Flint
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Improvements to the higher level keys too
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DNA profile of species
Modern collection of pure ethanol preserved specimens of freshwater species being assembled at NHM by Ben Price• Almost complete coverage for Mayflies and Stoneflies
• Underway for caddis
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Future for Riverfly Recording in UK
• Increase in recording
• More accurate records
• Profile of riverflies increased
• More recorders
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Money requested for:
• Annual meeting
• Recording apps and paper things too
• Training to get more verifiers