Butterfly data from the UK Environmental Change Network (ECN) terrestrial sites. These data are collected while walking a defined transect at all of ECN's terrestrial sites using a standard protocol. They represent continuous weekly records from 1992 to the present day. The data available on the Gateway are summaries derived from weekly species counts summarised annually Raw data are available, through a licensing system, from the ECN website - www.ecn.ac.uk.
ECN is the UK's long-term environmental monitoring programme. A wide range of integrated physical, chemical and biological variables which drive and respond to environmental change are collated, quality controlled and made freely available for scientific research. The data also form an important evidence base for UK environmental policy development.
ECN is a multi-agency programme sponsored by a consortium of fourteen government departments and agencies. These organisations contribute to the programme through funding either site monitoring and/or network co-ordination activities.
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