Out of 37 LTMN sites, 32 have one or more UKBMS transects associated with them. The methodology used for this protocol can be found on the UKBMS website. Data are submitted to UKBMS by the site staff and volunteers who collect the data. LTMN butterfly data are requested annually from the UK Centre for Ecology & Hydrology (UKCEH), who manage the UKBMS database, and are reproduced here. Name of downloadable recordDescription of data in the record UKBMS transects on LTMN sites, October 2023A lis...