Adders are facing near extinction in Britain according to study of national adder population trends | 3/5/2019 | Staff
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The adder could all but disappear from the UK countryside by 2032, according to new research conducted with the help of citizen scientists.

The findings, published in the Herpetological Journal, are the culmination of 11 years of nationwide monitoring and showed that 90 percent of adder populations surveyed were declining. Experts warn that, if these trends continue, within just 10-20 years adders could be restricted to just a handful of sites in the UK.

Adder - Conservation - Priority - Species - UK

The adder is a conservation priority species in the UK. Although concern has been growing among reptile experts for decades that our native adder populations are in decline, this study is the first time that national adder population trends have been measured, and the data confirm that our adders are in serious trouble.

The data were collected by Amphibian and Reptile Groups of the UK (ARG UK) through the 'Make the Adder Count' project, a citizen science survey to monitor adder populations across the UK, which was set up in 2005. Each spring, volunteer surveyors visit their local adder sites to count the numbers of animals, in order to assess whether populations are changing. Dr. Emma Gardner, a researcher from the University of Reading, has analysed the first 11 years of monitoring data.

Analysis - Percent - Sites - Populations - Populations

"Our analysis shows that 90 percent of the sites surveyed have small populations and on average these small populations are declining." said Dr. Gardner. "When surveyors visit these sites, they typically record less than 10 adders. Only 10 percent of sites have large populations, which seem to be doing ok. If these trends continue, within 10-20 years, adders will be restricted to just a few sites in the UK, significantly increasing the extinction risk for this priority species in Britain."

This is not just bad for adders. Adders are an indicator species. If adders are in serious decline,...
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