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The gathering and application of invertebrate data

The gathering and application of invertebrate data. Brian Nelson, National Museums Northern Ireland. Gathering. Most recorders work in their spare time Majority of records gathered by a few recorders Increasing (?) number of naturalists, more inclined to record challenging groups

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The gathering and application of invertebrate data

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  1. The gathering and application of invertebrate data Brian Nelson, National Museums Northern Ireland

  2. Gathering • Most recorders work in their spare time • Majority of records gathered by a few recorders • Increasing (?) number of naturalists, more inclined to record challenging groups • Increased availability of keys and field guides, web-based resources • Large datasets more easily stored and analysed on home computers

  3. Gathering: often a solitary activity….

  4. ….. but can be communal.

  5. What to do with records? • You could do nothing – but what is the point? • Get them verified, become trusted • Publish records yourself or contribute them to a recording scheme • Today’s option - send to a records centre • Leave critical vouchers in a museum – very important!!

  6. Application • Production of atlases • Site protection • Species protection • Red data lists • Monitoring • Enthusing • Analysis of trends e.g. response to climate and habitat change

  7. DragonflyIreland - the mapping of Ireland in four years

  8. Aims • Map the distribution of all Irish species • Compare with previous surveys • Document habitat, species assemblages and important sites • Encourage recording • End product - atlas and handbook

  9. 1970-1999 Pre 1970 2000-2003 Coverage

  10. Recording effort

  11. 2000-2003 1980-1999

  12. Recording effort

  13. Publishing and dissemination of records • Long tradition of atlases of Britain and Ireland • Ireland often poorly covered in maps and text • Trend for Ireland-only atlases being produced • Online access with full data – NBN and NBDC

  14. Distribution map of Irish BluetCoenagrionlunulatum on NBDC site

  15. Training

  16. Water beetles of Ireland

  17. Progress: number of water beetle records per decade

  18. Water beetle threat categories

  19. Dragonfly species richness

  20. Nationally (l) and regionally (r) important dragonfly sites

  21. Emergence pattern

  22. Ireland-only Insects • 1 Odonata - damselfly • 2 Hymenoptera - bee/ant/wasp • 3 Trichoptera - caddisfly • 5 Hemiptera - bugs/aphids/froghoppers • 5 Lepidoptera - butterflies/moths • 11 Coleoptera - beetles • 21 Diptera - two-winged flies

  23. Irish Bluet Coenagrion lunulatum • Main distribution Ireland, Netherlands, Finland, probably Russia, Mongolia • Northern temperate species mesotrophic ponds

  24. Sigara fallenoidea • Awater boatman. Large Irish lakes. • Relict species in Northern Hemisphere

  25. Sigara fallenoidea

  26. Sigara fallenoideaPohjanpikkumalluainen

  27. Limnoporus rufoscutellatus • A large pondskater. Widespread in central and northern Europe • Occurs at very low densites, 1000 other gerrids to 1 of this species.

  28. Gyrinus natatorThe Shady Whirligig • the commonest whirligig? • last record in GB 1921 • shady peat cuttings and lake edges • presumably at threat from sites becoming overgrown as in Cumbria

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