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Ringlet (Aphantopus hyperantus)
© Nick Greatorex-Davies
The Ringlet is a species of tall and often damp grassland in open but sheltered situations such as woodland edges, rides and glades, river banks, hedgerows and road verges. Coarse grasses seem to be preferred as larval foodplants. The species is expanding its range in Britain. (For further details on this species see http://www.butterfly-conservation.org/).
Family: Satyridae
Status: Rapid increase
Status details:
Status since 1976 is Rapid increase with an increase of 312.1%
Status over the last 20 years is Stable with an increase of 25.2%
Status over the last 10 years is Stable with an increase of 6.6%
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:
As a result of the 1976 drought numbers of Ringlet crashed in 1997, but subsequently increased steadily over the next five years to well above 1976 level. The overall trend shows a highly significant increase but numbers have fluctuated relatively little from year to year since the recovery, remaining at the higher level. The Ringlet has a disjunct distribution in Britain and has been expanding its range northwards and outwards from its northern centres of population in recent years. Several northern BMS sites have been colonised during the monitoring period, indicating this spread.
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, Ringlet has been recorded from 781 transects in the Butterfly Monitoring Scheme. Of these, annual indices of abundance have been calculated from 872 sites, with an average index of 108 individuals per site.
For 387 of these sites, Ringlet has been recorded well enough to calculate annual indices of abundance in 6 or more years, allowing trends to be calculated.
In 2006, 59897 individuals were recorded from 501 sites, producing annual indices at 407 of these.
