UK moth trends from Rothamsted Insect Survey light-trap network (1968 to 2016)
THIS DATASET HAS BEEN SUPERSEDED The latest version is Moth trends for Britain and Ireland from the Rothamsted Insect Survey light-trap network (1968 to 2016)
The previous version failed to mention the inclusion of records from Ireland. The new version has an updated title to reflect the geographic range of records and column headings in the data file have been updated.
If you need access to the archived version, please contact the EIDC
Download/Access
THIS DATASET HAS BEEN SUPERSEDED The latest version is Moth trends for Britain and Ireland from the Rothamsted Insect Survey light-trap network (1968 to 2016)
The previous version failed to mention the inclusion of records from Ireland. The new version has an updated title to reflect the geographic range of records and column headings in the data file have been updated.
If you need access to the archived version, please contact the EIDC
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Comma-separated values (CSV)
Spatial information
Temporal information
Provenance & quality
The GAI methodology is a two-step statistical method designed to analyse count data for taxa showing seasonal patterns in abundance, such as Butterflies and Moths. The first step uses statistical models, in this case generalised additive models (GAMs) with a smoothing spline, to estimate annual flight curves for each species. The second stage takes these annual flight curves and uses them to correct for seasonal gaps in recording, producing estimated annual abundance indices for each site (site indices), to which a Poisson general linear model (GLM) is fitted allowing to the year and sites effects upon the site. The year coefficient from these GLMs are one of the measures of the temporal abundance trend presented in this data. In addition to the coefficient itself two additional metrics of temporal trend were estimated and are presented here, specifically the Annual Growth Rate (AGR) and the total percentage change over the time series for each species. Confidence intervals on the trend metrics were determined by bootstrapping (1000 replicates).
The research was primarily funded by Natural Environment Research Council (NERC) and the Biotechnology and Biological Sciences Research Council (BBSRC) under research programme NE/N018125/1 LTS-M ASSIST – Achieving Sustainable Agricultural Systems. The Rothamsted Insect Survey, a National Capability, is funded by the BBSRC under the Core Capability Grant BBS/E/C/000J0200. The research builds upon model development supported by NERC award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability.
Licensing and constraints
THIS DATASET HAS BEEN SUPERSEDED The latest version is Moth trends for Britain and Ireland from the Rothamsted Insect Survey light-trap network (1968 to 2016)
The previous version failed to mention the inclusion of records from Ireland. The new version has an updated title to reflect the geographic range of records and column headings in the data file have been updated.
If you need access to the archived version, please contact the EIDC
This dataset is available under the terms of the Open Government Licence
© UK Centre for Ecology & Hydrology
© Rothamsted Research
© Butterfly Conservation
Citations
Correspondence/contact details
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM
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Additional metadata
Biotechnology and Biological Sciences Research Council Award: BBS/E/C/000J0200