The Nottingham-based National Biodiversity Network has published its 2019 Report and it does not make good reading.
It revealed that the UK’s most important animal populations are down by 60% compared to 1970. One in four UK mammals and nearly half of our native birds are in danger of extinction. The most vulnerable animals include hedgehogs, hares and bats. One in four moths and one in five butterflies have already disappeared. The report shows no significant improvement since the last one in 2016, which said the UK was “among the most nature-depleted countries in the world”.
“The indicator for 696 terrestrial and freshwater species shows a significant decline of 13% in average abundance since 1970, and has fallen by 6% over the past 10 years.
Within this indicator, more species have decreased than increased. Since 1970, 41% of species have decreased and 26% have increased in abundance, with the remaining 33% showing little change. Over the past 10 years, 44% of species have decreased and 36% have increased in abundance, with 20% showing little change. The UK’s wildlife is undergoing rapid changes in abundance; the proportion of species defined as showing strong changes in abundance – either increases or decreases – rose from 33% over the long term to 53% over the past 10 years.
Long-term decreases in average abundance in butterflies since 1976 (16%) and moths since 1970 (25%) have not slowed. The mammal indicator shows little change since 1994; while an increase of 43% in the bird indicator has been driven by recovery of some species from very low numbers, conservation successes and colonising species, as well as increasing numbers of wintering waterbirds. These increases mask abundance declines in common and widespread breeding species; the total number of breeding birds in the UK fell by 44 million between 1967 and 2009.
Our indicator of average species’ distribution, covering 6,654 terrestrial and freshwater species over a broad range of taxonomic groups, has fallen by 5% since 1970. Because species tend to decline in abundance before they disappear from a site, this change could reflect more severe underlying abundance declines that we are currently unable to quantify.
Within this indicator, more species have decreased than increased. Since 1970, 27% of species have decreased and 21% have increased in distribution, with 52% showing little change. Over the past 10 years, 37% of species have decreased and 30% have increased in distribution, with 33% showing little change. The UK’s wildlife is undergoing rapid changes in distribution; the proportion of species defined as showing strong changes in distribution – either increases or decreases – rose from 17% over the long term to 39% over the past 10 years.
Of the 8,431 species that have been assessed using the IUCN Regional Red List criteria, and for which sufficient data were available, 1,188 (15%) are currently threatened with extinction from Great Britain and 2% are already extinct.”