Bear-Market Biodiversity


450px-Medved_mzoo.jpg Think Wall Street’s rollercoaster ride is scary? Imagine if stocks were species. That’s what the future looks like in a warming world: a monster bear market robbing the world of its real riches.

A new review published in Science addresses the question of whether the tropical forests and coral reefs of the tropics will have the most to lose as a result of global warming. Some say no: that tropical organisms will do well because their ranges will expand into temperate areas. Others says yes: because there’s little or no wilderness left in the temperate zone for them to move into.

Now a review of published papers finds that for plants and insects on a mountain slope in Costa Rica, a 3.2-degree C increase in temperature threatens 53 percent of lowland species with extinction, while 51 percent face range-shift gaps—meaning they have nowhere else to go.

Another reviewed study follows historical range changes for small mammals during 100 years of climate change in Yosemite National Park. These data show that species’ ranges are likely to contract dangerously as warming pushes life farther and farther up mountain slopes. . . Bottom line: biodiversity is Earth’s credit line. Without it, there’s absolutely no way to fund the future. Time to reassess our fatally flawed economics .

Julia Whitty is Mother Jones’ environmental correspondent, lecturer, and 2008 winner of the Kiriyama Prize and the John Burroughs Medal Award.

$500,000 MATCHING GIFT

In 2014, before Donald Trump announced his run for president, we knew we had to do something different to address the fundamental challenge facing journalism: how hard-hitting reporting that can hold the powerful accountable can survive as the bottom falls out of the news business.

Being a nonprofit, we started planning The Moment for Mother Jones: A special campaign to raise $25 million for key investments to make Mother Jones the strongest watchdog it can be. Five years later, readers have stepped up and contributed an astonishing $23 million in gifts and future pledges. This is an incredible statement from the Mother Jones community in the face of the huge threats—both economic and political—against the free press.

Read more about The Moment and see what we've been able to accomplish thanks to readers' incredible generosity so far, and please join them today. Your gift will be matched dollar for dollar, up to $500,000 total, during this critical moment for journalism.

We Recommend

Latest

Sign up for our newsletters

Subscribe and we'll send Mother Jones straight to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate

We have a new comment system! We are now using Coral, from Vox Media, for comments on all new articles. We'd love your feedback.