
More about the Marsh Fritillary
The Marsh Fritillary is declining in Wales due to habitat loss, degradation and fragmentation. Mainly found across South, South-west and West Wales, with a limited distribution in North-west Wales, the butterfly is typically associated with wet grassland (Rhôs pasture) dominated by Purple Moor-grass, but also occurs on dune slacks, coastal grasslands, neutral grasslands and fens where its larval foodplant, Devil’s-bit Scabious occurs.
The Marsh Fritillary exists as metapopulations, comprising groups of local populations connected by occasional dispersal. This means that the butterfly needs a network of well-connected habitat to thrive.

Natural Resources Wales state that semi-natural grassland declined by more than 90% during the latter part of the 20th Century; semi-natural grasslands occupy about 9% of the land area of Wales. Marsh Fritillary is an effective indicator of success in relation to assessing management interventions on Rhôs pasture habitat. This project will provide baseline data to assess the impact of future interventions on Marsh Fritillary habitat, on and around Wales' protected sites.
(Image credit: PONT)
