Robert Pore's Ag Blog

With fears that one in four of the world's plant species could already be on the brink of extinction from the effects of global climate change ­ and as many as half of the planet's estimated 400,000 plant species facing a similarly bleak future ­ a group of leading plant scientists have called for a global action plan to tackle the impending crisis.

"While the impact of climate change on iconic animal species, such as polar bears, is well recognised," says Sara Oldfield, Secretary General of Botanic Gardens Conservation International (BGCI), which is co-ordinating the initiative, "the threat that global warming poses to plant diversity is often overlooked and this could have serious consequences for the future of the planet."

According to BGCI, the terrifying implications of plant extinctions for the future of humankind and the wellbeing of the planet simply cannot be underestimated, the
scientists believe and time, they argue, is running out.

A recent study of four of the world's most important food crops, rice, potato, peanut and cowpea, predicts that climate change over the next fifty years will have a devastating impact on their wild relatives, which harbour the genetic diversity that may enable cultivated crops to adapt to changing climatic
conditions. By 2055, says the research, up to a quarter of all potato, peanut and cowpea species could become extinct and over 50 per cent of the land area currently suitable for their cultivation could be gone.

"Maintaining the genetic diversity that exists among the wild plant population is absolutely essential if we are to have any chance of mitigating the effects of climate change," says Emile Frison, Director General of the International Plant Genetic Resources Institute (IPGRI), a co-signatory of the declaration. "And this is not just a plant problem, but a human one too. Plants are key to human survival, not just for food, but medicines and many other essential materials."
And as environments change faster than plant species can migrate, scientists estimate that in less than 80 years up to half of Europe's plant species could be under threat and a massive 60 percent of mountain species may have vanished.

"We have to step up to the challenge now, at every level, if we are to make a difference," warns BGCI's Sara Oldfield. "The impact of global climate change on plants and habitats is already being felt and unless we do something about it urgently, the implications for all life on earth are bound to be severe."