Mass Extinctions Rise Among Plant Species

Illustration for article titled Mass Extinctions Rise Among Plant Species

Entire species of plants are dying off in droves, just like mammals. And there's no way to save them all, say scientists. How do you decide which plant species to preserve at all costs, and which ones to consign to oblivion forever? Answering that question may mean the difference between selective extinction for some — and worldwide extinction for all.A team from UC Santa Barbara is working on this very question, and they've just published a study in the Proceedings of the National Academy of Sciences. They believe Earth is in its sixth mass extinction, which will kill off nearly 50% of all plant and animal species. Figuring out which endangered plants to save may be the key to minimizing the ecological impact of this particular extinction:

"Losing a very unique species may be worse than losing one with a close relative in the community," said [co-author Todd] Oakley. "The more evolutionary history that is represented in a plant community, the more productive it is." [Post-doctoral fellow Marc W.] Cadotte explained that the buttercup is a very unique species, evolutionarily. Losing the buttercup, where it occurs in grasslands, would have a much bigger impact on the system than losing a daisy or a sunflower, for example. The latter species are closely related. Each could therefore help fill the niche of the other, if one were to be lost. The daisy and sunflower also have a more similar genetic make-up.

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It may be a sad day for the daisy, but ensuring the survival of a genetically diverse array of plant life will help ensure a sufficient level of biomass, and could reduce the devastation a mass extinction would cause. Image by Martin Heigan. Current Mass Extinction Spurs Major Study of Which Plants to Save [via Science Blog]

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DISCUSSION

Actually Citizen Kang, as you may have already assumed (rightly so), I don't have any degrees (advanced or otherwise) in the fields of genetics or botany. Is that a requirement to see the futility of what is being suggested here? Will humans stop being human so that the poor little plants and animals won't die? Hardly. Our intelligence is not tempered by the wisdom it would have taken to keep this eco-crisis from happening in the first place. Let's assume for a minute that it wasn't too late to stop the consequences for our actions. Would we NOW alter our way of life to prevent problems in the future? Honestly, does anyone REALLY care that much anyway?

It's nice to think that we can rally together globally and pool our resources to "save" the world. That we could forget about all the things that fuel this machine we have created; greed, reliance on conveniences, political conflicts.

You mock my opinions, and perhaps I am being a bit cynical. But I think we are the problem, not the solution. I love nature. I wish there were a solution that was viable. I just lack the kind of faith you apparently have in mankind's ability to change.