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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

Brian Nelson, National Museums Northern Ireland


Gathering
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




What to do with records
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!!


Application
Application

  • Production of atlases

  • Site protection

  • Species protection

  • Red data lists

  • Monitoring

  • Enthusing

  • Analysis of trends e.g. response to climate and habitat change



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


Coverage

1970-1999

Pre 1970

2000-2003

Coverage



2000-2003

1980-1999



Publishing and dissemination of records
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


Distribution map of irish bluet coenagrion lunulatum on nbdc site
Distribution map of Irish BluetCoenagrionlunulatum on NBDC site









Ireland only insects
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


Irish bluet coenagrion lunulatum
Irish Bluet Coenagrion lunulatum

  • Main distribution Ireland, Netherlands, Finland, probably Russia, Mongolia

  • Northern temperate species mesotrophic ponds


Sigara fallenoidea
Sigara fallenoidea

  • Awater boatman. Large Irish lakes.

  • Relict species in Northern Hemisphere



Sigara fallenoidea pohjanpikkumalluainen
Sigara fallenoideaPohjanpikkumalluainen


Limnoporus rufoscutellatus
Limnoporus rufoscutellatus

  • A large pondskater. Widespread in central and northern Europe

  • Occurs at very low densites, 1000 other gerrids to 1 of this species.


Gyrinus natator the shady whirligig
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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