UK Butterflies Decline 英国蝴蝶踪迹难觅
[audio]http://file.24en.com/bbc/tae/assets_5754236/bbc_tae_275_butterfly_au_bb.mp3[/audio][color=#3f3f3f][font=Verdana, 宋体, helvetica, arial, sans-serif][size=12px][p=21, 2, left]The British summer is extremely beautiful. Trees, flowers, birds and[b]butterflies[/b] make the whole country like a big garden. However, many British people have noticed that butterflies have been gradually disappearing from this [b]picturesque scenery[/b] during the past several years. What has happened to them?[/p][p=21, 2, left]Butterfly [b]Conservation[/b], a [b]charity[/b] in the UK, is running a [b]survey[/b] to help answer this question. The result is more serious than people expected. According to the survey, among 59 butterfly [b]species [/b]found in the [b]British Isles[/b], more than three-quarters of them are suffering a [b]declining[/b]population, including the most popular Meadow Brown. Moreover, half of all butterfly species are on the verge of [b]extinction[/b].[/p][p=21, 2, left]Some common species such as the small Tortoiseshell butterfly and the Wall butterfly are dropping [b]dramatically[/b]. The latter cannot even be seen in many parts of central and southern England.[/p][float=right][img=226,170]http://www.24en.com/d/file/bbc/bbc2/2010-07-29/8c624bffd63a179e277bf8d137673023.jpg[/img][p=30, 2, left]The Large Blue Butterfly is one fascinating wild species in the UK[/p][/float][p=21, 2, left]The Blue butterfly, which was commonly seen in the south, has started [b]colonising [/b]Edinburgh in the past few years.[/p][p=21, 2, left]The numbers of butterflies have dropped to [b]a record low[/b] in the past three years largely because the summer in the UK is getting cooler and their [b]habitat [/b]is also[b]degrading[/b].[/p][p=21, 2, left]Fortunately Britain is experiencing a long hot summer this year compared to the last few summers. [b]Conservationists[/b] believe the warm weather will bring some benefit to the butterflies.[/p][p=21, 2, left]Sir David Attenborough, president of Butterfly Conservation, said: "Butterflies in [b]profusion[/b] tell us that all is well with nature. When they decline it's a warning that other wildlife will be soon heading the same way."[/p][p=21, 2, left]The survey is still going on. The public is also encouraged to [b]keep track of [/b]the UK's butterfly population. The organisers hope the survey will help raise public awareness of the value of butterflies in the UK. Butterflies give an [b]indication[/b] of the well-being of nature and the environment.[/p][/size][/font][/color]
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