Diverse forests are stronger against drought North Island farmers lose 100,000 lambs after spring storm Germany is razing a 12,000-year-old forest to make way for a coal mine বইছে আশ্বিনী দাবদাহ, বৃষ্টি কবে? I went trash free for a day বাংলাদেশে প্লাস্টিক দূষণ এবং পরিবেশের উপর তার প্রভাব পরিবেশের দূষণের বছরে ক্ষতি সাড়ে ছয় শ কোটি ডলার: বিশ্বব্যাংক Drought-stricken farmers challenge Coalition’s climate change stance in TV ad Is Climate Change Making Hurricanes Worse? Yes, Here’s Why. Off Tanzania, in one of the world’s richest seas, why is the catch getting smaller?

The tree that bleeds… metal?


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Heavy metals like nickel and zinc are usually the last thing that plants want to grow next to in high concentrations.

But a specialised group, known as hyperaccumulators, have evolved to take up the normally toxic metals into their stems, leaves and even seeds.

Researchers have been studying Pycnandra acuminata in particular – a tree that grows on the island of New Caledonia in the south Pacific.

They think it may use the nickel to defend against insects.

Its latex has an unusual blue-green colour as it contains up to 25% nickel.

"Pycnandra acuminata is a large (up to 20m tall) rare rainforest tree, restricted to remaining patches of rainforest in New Caledonia," says Dr Antony van der Ent, a researcher at the University of Queensland who has been studying the tree.

read more: https://www.bbc.com/news/science-environment-45398434

Posted by on Sep 6 2018. Filed under Environmental livelihood, News at Now, News From Roots. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

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