Cite this dataset as
Botham, M.S., Middlebrook, I., Heywood, J., Harrower, C., Conway, R., Roy, D.B. (2023). United Kingdom Butterfly Monitoring Scheme: species trends 2022. NERC EDS Environmental Information Data Centre. (Dataset). https://doi.org/10.5285/4d21825b-56fc-4e01-8d67-068d1d587633
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This dataset is available under the terms of the Open Government Licence
Botham, M.S.; Middlebrook, I.; Heywood, J.; Harrower, C.; Conway, R.; Roy, D.B.
United Kingdom Butterfly Monitoring Scheme: species trends 2022
This dataset provides linear trends, over varying time periods, for the Collated Indices of individual butterfly species across the UK. The main statistical values derived from a linear regression (slope, standard error, P-value) are presented for the entire time series for each species (1976# to 2022), for the last 20 years, and for the last decade. In addition, trends are classified based on the direction and significance of a linear slope together with an estimated percentage change for that time period. These trend data are provided for all UK butterfly species for which we have sufficient data (58 species).
Trends are calculated by performing a linear regression on the annual Collated indices for each species. Collated indices are calculated using a log-linear model incorporating individual site indices from all monitored sites across the UK for a given species in a given year.
Trends across different time series allow us to determine the long and short-term status of individual species. This is enables us to focus conservation and research and also to assess species responses to conservation already in place.
The UK Butterfly Monitoring Scheme is organized and funded by Butterfly Conservation (BC), the UK Centre for Ecology & Hydrology (UKCEH), the British Trust for Ornithology (BTO), and the Joint Nature Conservation Committee (JNCC). The UKBMS is indebted to all volunteers who contribute data to the scheme.
This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability.
#Because the Collated indices are only calculated for each species in years in which it was recorded on five or more sites, the starting year for the series is later than 1976 for a number of rarer species.
Trends are calculated by performing a linear regression on the annual Collated indices for each species. Collated indices are calculated using a log-linear model incorporating individual site indices from all monitored sites across the UK for a given species in a given year.
Trends across different time series allow us to determine the long and short-term status of individual species. This is enables us to focus conservation and research and also to assess species responses to conservation already in place.
The UK Butterfly Monitoring Scheme is organized and funded by Butterfly Conservation (BC), the UK Centre for Ecology & Hydrology (UKCEH), the British Trust for Ornithology (BTO), and the Joint Nature Conservation Committee (JNCC). The UKBMS is indebted to all volunteers who contribute data to the scheme.
This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability.
#Because the Collated indices are only calculated for each species in years in which it was recorded on five or more sites, the starting year for the series is later than 1976 for a number of rarer species.
Publication date: 2023-12-20
View record as
These data are held and managed by the Environmental Information Data Centre
For more details and to access the data, go to https://catalogue.ceh.ac.uk/id/4d21825b-56fc-4e01-8d67-068d1d587633
Format
Comma-separated values (CSV)
Spatial information
- Study area
-
- Spatial representation type
- Tabular (text)
- Spatial reference systems
-
OSGB 1936 / British National Grid
OSNI 1952 / Irish National Grid
Temporal information
- Temporal extent
-
2022-04-01 to 2022-09-30
Provenance & quality
Trends are calculated by performing a linear regression on the annual Collated Indices for each species. Indices are calculated for all species (across Wider Countryside Butterfly Survey squares and traditional UKBMS sites) using the Generalised Abundance Index (GAI) method developed in 2016 with an additional modification that the data from each site in each year is weighted in the final stage relative to the proportion of the species flight period surveyed that year for that site. They give a statistical measure of how the abundance of each species has changed on monitored sites since 1976, over the last 20 years, and over the last decade. Because the Collated indices are only calculated for each species in years in which there was sufficient data available, the starting year for the series is later than 1976 for a number of rarer species.
Supplemental information
Correspondence/contact details
Botham, M.S.
UK Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM
enquiries@ceh.ac.uk
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM
Authors
Heywood, J.
British Trust for Ornithology
Conway, R.
Butterfly Conservation
Other contacts
- Rights holders
-
UK Centre for Ecology & Hydrology, Butterfly Conservation, British Trust for Ornithology, Natural Environment Research Council, Joint Nature Conservation Committee
- Custodian
-
NERC EDS Environmental Information Data Centreinfo@eidc.ac.uk
- Publisher
-
NERC EDS Environmental Information Data Centreinfo@eidc.ac.uk
Additional metadata
- Topic categories
- biota
- INSPIRE theme
- Environmental Monitoring Facilities
- Keywords
- annual , Biodiversity , Biodiversity , Biodiversity , butterfly , England , lepidopteran , Northern Ireland , Scotland , UK Butterfly Monitoring Scheme , UK-SCAPE , United Kingdom , Wales
- Funding
- NERC Award: NE/R016429/1
Butterfly Conservation
Joint Nature Conservation Committee - Last updated
- 27 February 2024 16:21