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High Brown Fritillary (Argynnis adippe)
© Eddie John
The High Brown Fritillary lives in similar habitats to the Pearl-bordered Fritillary requiring short vegetation is sunny situations where there is an abundance of its foodplant, violets, especially Dog Violet (Viola riviniana). Once widespread in coppiced woodland and bracken habitats the species has experienced the greatest decline of all butterfly species still resident in Britain. (For further details on this species see http://www.butterfly-conservation.org/).
Family: Nymphalidae
Status: Insufficient information
Status details:Insufficient information
Back to the topLog collated index plot
This chart shows the index of abundance (LCI = Log Collated Index) over time. It shows fluctuations in populations from year to year, and is scaled so that the average index over the whole series is equal to 2 (horizontal line). For greater detail about how this index is derived, click on the green question mark above.
Trend description:
The data show no significant trend. However the butterfly is only currently regularly recorded on three BMS transects. On two sites in north Lancashire double or three figure counts are made annually on the transects and numbers have increased in response to appropriate management. The other site is in Devon and numbers recorded are small but appear to be stable.
Distribution...
This map shows the distribution between 1995 and 1999. Data is derived from the Butterflies for the New Millenium dataset via the NBN Gateway (www.searchnbn.net).
View the distribution on the NBN GatewayPhenology...
Phenology plot
Phenology plot
This chart shows the average number of butterflies seen on transects between Arpil and October. The black line gives average counts over the full BMS series (1976 to date) and the red line gives the average for the last year.
Abundance...
Abundance
This map shows symbols for the mean abundance at transect sites, with the size of symbol reflecting the level of abundance. Means are over all years.
Coverage
In total, High Brown Fritillary has been recorded from 187 transects in the Butterfly Monitoring Scheme. Of these, annual indices of abundance have been calculated from 100 sites, with an average index of 81 individuals per site.
For 70 of these sites, High Brown Fritillary has been recorded well enough to calculate annual indices of abundance in 6 or more years, allowing trends to be calculated.
In 2006, 2047 individuals were recorded from 28 sites, producing annual indices at 40 of these.
This map shows the trend in abundance at particular transect sites. Trends (increasing, declining or stable) are assessed at sites where the species has more than five years of annual index data. Click on the green question mark next to the species name above for more details on how trends are calculated.
Links to lists of sites with particular statuses
• Extinct sites (2)
• Colonised sites (1)
- Stable sites (21)
- Declining sites (7)
- Increasing sites (2)
