Scientific American又來了!第六次大滅絕,地球人是罪魁禍首。






第六次大滅絕是托福生物學科經常出現的考題,跟先前五次物種大滅絕不同的是,這回(第六次)的滅絕,科學家認為是人為因素導致的。目前全球各地的專家學者都在研究物種消失對於地球的影響。最新研究指出,第六次大滅絕還在起步階段,目前尚未(記得英文的for now/yet的意涵)影響地球的生物多樣性 biodiversity。不過這並不代表問題不嚴重,因為類似的滅絕行動是不可逆的 irreversible,一旦滅絕啟動,許多傷害便難以彌補,冥頑不靈的人類又不知覺醒,地球的未來還是令人感到憂慮。



Biodiversity Survives Extinctions for Now

A meta-analysis of ecosystems finds that species losses in any given place do not yet translate to large changes in the number of different species in that place. David Biello reports


We are living during what seem to be the opening stages of the sixth mass extinction第六次大滅絕 in our planet's 4.5 billion year history. Species of birds, fish, mammals and plants are disappearing at speeds rarely experienced, thanks in large part to 因為human activities: pollution, climate change, habitat destruction and other damage. But extinction apparently does not mean less biodiversity—at least not yet.

A new look at ecosystems from the poles
南北極 to the tropics熱帶地區 shows that losses in the number of species in any given place do not yet translate to large changes in the overall number of different species there. The study is in the journal Science. 

The researchers analyzed 100 surveys that followed more than 35,000 different species over various lengths of time. These long-term studies found that the number of different species in, say, a coral reef珊瑚礁 remains relatively constant. Because the loss of a species, either locally在地的/當地的 or entirely, is often balanced by平衡 the arrival of a new species.

The
meta-analysis之後showed that 40 percent of places had more species present, 40 percent had less and 20 percent were unchanged. In other words, the ecosystems of the current Anthropocene era人類紀 are transformed, but just as diverse—so far anyway. We are living in a world of novel全新的 ecosystems.

—David Biello

留言

這個網誌中的熱門文章

Resolve and solve 有什麼不同?該怎麼用?一分鐘搞懂!

最美麗的英文字 Serendipity ,是翻譯者最不想碰的難題。Looking for one thing: finding another...

Vegan 跟 vegetarian 其實不同派。關於各種「飲食派」的英文,這篇全介紹!吃素好處多,吃素可以救地球!

你相信亡靈的存在嗎?我曾經與亡者有過交集,還有屬於我自己的地藏經感應篇。

台灣小吃英文報導,CNN一網打盡,同場加映雞蛋糕與車輪餅英文喔!

英文文法懶人包,一次下載14包,讓你口說寫作不出包!

留學申請寫好SOP? 請聽美國名校評審委員怎麼說? 所有連結都已經更新可以下載了。