北遷蜻蜓或成威脅

英國最近的蜻蜓研究發現,自1970年起有40%的蜻蜓品種有增加,11%數量下降。 現時英國的蜻蜓當中,有六種是因氣候變化往北遷到英國範圍,有專家擔心新物種或會與原生物種競爭資源及造成威脅,而類似情況亦有在加拿大及美國發生。

A recent Bristish dragonfly study discovered since 1970, around 40% of the species increased in numbers, while 11% decreased. Among all dragonfly species in UK, six of them moved north to UK due to climate change. Experts worry these species may compete with native species for resources and create threats. Similar trends was observed in Canada and US as well. 

https://www.ctvnews.ca/climate-and-environment/how-climate-change-is-affecting-dragonflies-in-canada-and-around-the-world-1.5578224

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