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 record | Description of data in the record |
| UKBMS transects on LTMN sites, October 2023 | A list of LTMN sites with UKBMS transects present on or nearby, with details such as map grid references, start and latest recording year etc. |
| LTMN sites – visit data | For each UKBMS transect, dates and times of recording visits. |
| LTMN sites – site indices | For each species, by UKBMS transect and year, an abundance index. These are calculated by UK CEH, using a model that predicts and takes account of any missing count values. For further information see the UKCEH Environmental Information Data Centre |
| LTMN sites – weekly count data | For each species, by UKBMS transect and week, a total count. |
| LTMN sites – raw count data | For each species, by UKBMS transect, visit and transect section, a count. |
Data ownership and correct acknowledgment of data providers:
Surveyors retain the ownership of the records they submit to the UK Butterfly Monitoring Scheme (UKBMS). The UKBMS Partners (Butterfly Conservation, UK CEH, BTO and JNCC) retain copyright and database rights in datasets compiled from those records. Compiled data are shared under Open Government Licence and it is your responsibility to abide by the licence conditions. One of these conditions is that you must acknowledge the source of the information in your product or application by including or linking to the following attribution statement: ‘Contains UK Butterfly Monitoring Scheme (UKBMS) data © copyright and database right. Butterfly Conservation, the Centre for Ecology and Hydrology, British Trust for Ornithology, and the Joint Nature Conservation Committee, [insert year of dataset publication]’.
This page is part of Natural England’s Long Term Monitoring Network.