This document outlines the increases and decreases in key species, as well as the possible causes of the observed trends.
The report reveals that there are currently 56 species on the British list, 46 of which are resident or regular migrants, with the remaining being vagrants. The BDS, in conjunction with the UK Centre for Ecology and Hydrology, have analysed the trends of our resident species and have found that 41% have significantly increased site occupancy, with 11% showing significant declines.
However, the precise cause for these declines is still to be determined, although climate change and habitat quality are clearly important contributing factors. The assessment of the driving forces behind the observed trend will be drawn from expert opinion and knowledge of the relevant species’ biology and ecology.
The report also brings to light that six new species have colonised Britain since 1996, whilst a seventh species has recolonised after an absence of 60 years.
You can read the rest of the report and find out more details on the state of dragonflies in Britain and Ireland here.
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