Isopoda (Interim dataset)

Quality Control

Certain Isopoda species may be easier to find than others in the field due to their size or habitat and this may bias counts towards these species. For the atlas dataset, sieving techniques for smaller species were used more widely in SE Britain, thus possibly affecting perceived diversity in N & W Britain, but this may only be a small effect. All records have been verified by competent members of the Scheme and those in the atlas dataset were validated by the Scheme organisers. More recent records were validated at BRC.

Method steps

1. Species were surveyed using standard field methods. Some smaller specimens were found using sieving techniques. Data were collected on BRC recording cards and mainly input into electronic format at BRC.

This dataset contains records from Britain and Ireland. There is good coverage of England, reasonable coverage of most of Scotland and Wales and light coverage of Ireland.