Grasslands form a major part of the European landscape and are the main habitat for many butterfly species. The decline of grassland specialist butterflies is much more severe than for other hibitats or generalist butterflies. Since 1990 butterfly populations have decreased by almost 60%. In Western Europe, the decline is associated with intensification of agriculture and heavy use of fertilisers and pesticides.
Source:
van Swaay, C.A.M. & van Strien, A.J. (2008) The European Butterfly Indicator for Grassland Species 1990-2007, Report VS2008.022, De Vlinderstichting (Dutch Butterfly Conservation), Wageningen, The Netherlands
http://www.vlindernet.nl/doc/dvs/pdf/VS2008-022.pdf
Once there were swarms of butterflies in our skies but if you go out for a walk today, you will be lucky to spot one or two. Patrick Barkham, who has been a passionate lepidopterist since he was eight years old, laments the dramatic decline of these most extraordinary insects – and wonders if there is any chance of saving them.
The Guardian, 27 April 2009
http://www.guardian.co.uk/environment/2009/apr/27/butterfly-decline-cons...
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