地球上的生态系统是一个整体，缺少了任何物种都可能会产生一系列无法预估的后果。自然环境的好坏与许多种生物的生存息息相关，其中就包括蝴蝶。在英国，一些团体和个人正为保护蝴蝶而积极努力。
" D+ y" p* _5 A( z The public is being asked to help track the UK's butterfly populations as conservationists warn many native species are in serious decline.9 a# y) ~6 C+ s0 L5 `4 I4 M* n. d+ U
& e6 q g: {+ y( X' B* q The online Big Butterfly Count survey aims to get a better understanding of which species are in need of most help.+ y) a: x. `; z+ @: V
?7 ]' y2 H' _2 C Butterflies are sensitive to changes in environment and have seen a collapse in numbers in the past three decades.' {5 X( B% v2 D3 n2 H
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More than three-quarters of the 59 species found in the British Isles are in decline, including the meadow brown.
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, I, S3 Z: h- I- O- K The holly blue and gatekeeper are among the other butterflies once recently regarded as common species which are now believed to be joining the list in need of protection.
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; I, [5 C' n5 n7 a$ `$ O The survey is being run by the charity Butterfly Conservation and retailer Marks & Spencer as part of its environment commitment.. |1 I8 p: t5 x- K u
' }. A/ A' J/ |0 P1 R8 B Adults and children are being invited to spend 15 minutes in gardens, woodlands, fields or parks between 24 July and 1 August and make a record of the butterflies and day-flying moths that they see./ A4 |8 ^: l7 R
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The organisers hope the survey will help build up a better picture of the fortunes of the country's butterflies, and give an indication of the wider health of countryside and nature. |
发表于 2012-8-14 23:21:39
