Skip to contents

Data - UK Butterfly Monitoring Scheme - Habitat Specialists

Source: R/butterflies_hs-data.R
butterflies_hs.Rd

This dataset from the UK Butterfly Monitoring Scheme has national abundance indices for 26 species regarded as habitat specialists from 1976-2017. There are 1000 rows of data. Ten species have a complete time-series (42 years of data); 15 species join late (9 in the 1970s, 3 in the 1980s and 3 in the 1990s); the Swallowtail (Papilio machaon) spans the full range of years but has no data for 1978.

Usage

data(butterflies_hs)

Format

There are four columns of data:

  • "species" The species' name (Latin binomial)

  • "year" year to which the index value refers (integer)

  • "index" A "collated" index of abundance on the log10 scale. The time-series for each species is fixed to have a mean of exactly 2. Since 10^2 = 100, the time-series are centered on a value of 100.

  • "se" standard errors on the index value (on the log10 scale), as estimated by the underlying statistical model.

Source

https://catalogue.ceh.ac.uk/documents/ace3c3ef-df89-40b9-ba8b-106997fd6d9c

References

Botham, M.S.; Brereton, T.; Harris, S.; Harrower, C.; Middlebrook, I.; Randle, Z.; Roy, D.B. (2019). United Kingdom Butterfly Monitoring Scheme: collated indices 2017. NERC Environmental Information Data Centre. https://catalogue.ceh.ac.uk/documents/ace3c3ef-df89-40b9-ba8b-106997fd6d9c

Examples

data(butterflies_hs)
head(butterflies_hs)
#>         species year    index        se
#> 85 Apatura iris 1979 1.551017 0.5004393
#> 86 Apatura iris 1980 2.165110 0.3656725
#> 87 Apatura iris 1981 1.551452 0.5004379
#> 88 Apatura iris 1982 1.918865 0.3949986
#> 89 Apatura iris 1983 2.324496 0.2890625
#> 90 Apatura iris 1984 2.126892 0.2997200