Our Inability to Deal With Climate Change Is Going to Kill the Penguins

Many Antarctic Emperor penguin colonies could decline by more than half in less than a century.

A group of Emperor penguin adults make their way across sea ice in Terre Adélie in East Antarctica. The seabirds rely on sea ice for breeding and raising their young, but declines in sea ice from warmer temperature may be affecting all colony by the end of the century.Courtesy Stephanie Jenouvrier


Move over, polar bears: It’s time for Emperor penguins to become the new poster children of climate change.

Recently, polar biologists at the University of Minnesota used satellite images of poop stains (scientists are nothing if not resourceful) to show that some colonies of Emperor penguins in Antarctica are uprooting historic nesting sites, possibly to escape warming temperatures.

penguin vertical

Courtesy Stephanie Jenouvrier

Today, a new study in Nature makes an even more grim prognostication about the future of the species: Thanks to declining concentrations of sea ice, two-thirds of Antarctica’s Emperor penguin colonies could lose more than half their population by 2100. Across the entire species, that translates to a 19 percent drop. Some colonies are larger than others, so a 50 percent decline in one group might be only a few individuals, while the same change in a larger group could be hundreds.

Less sea ice makes it more difficult to access krill, the tiny shrimp-like crustaceans that are the penguins’ primary food source, said study coauthor Julienne Stroeve, a researcher at the National Snow & Ice Data Center. “Then, there are these large mortality rates for the penguins.”

So just how many penguins are we talking about here? A satellite survey in 2012 pegged the total head count at 595,000 across 45 colonies. A 19 percent decline would reduce the population to 481,950, or a loss of 113,050 adorable birds.

Scientists have long known that animals at the poles are especially vulnerable to global warming, which is happening in the Arctic and Antarctica faster than the rest of the world. In the Arctic, disappearing ice and rising temperatures are pushing species of whales, seals, and bears to hybridize, jeopardizing their genetic health. In Antarctica, earlier research has found that ocean warming could reduce the habitat available for krill by 20 percent, compounding the sea ice problem.

puffin

Earlier this year we explained the dangers that climate change pose for baby Puffins in the Gulf of Maine.

Today’s study is just the latest reminder of the vital role ice plays in the Antarctic ecosystem. And there’s little doubt that Antarctica’s ice is in serious trouble: Earlier this year a trove of research emerged indicating that one of the continent’s major ice sheets is already in irreversible decline.

The map below, from the study, shows which penguin populations are most at risk. The purple-to-white color gradient shows changes in mean sea ice concentration between the twentieth and twenty-first centuries (it’s a bit counter-intuitive; purple is the least decline and white is the most). Each colored dot is a penguin colony, with the color indicating the colonies’ projected conservation status (see key below) by 2100. You can see that the most-threatened populations (red dots) are those nearest to the white space where sea ice has declined the most.

penguin map

Courtesy Nature

More Mother Jones reporting on Climate Desk

AN IMPORTANT UPDATE

We’re falling behind our online fundraising goals and we can’t sustain coming up short on donations month after month. Perhaps you’ve heard? It is impossibly hard in the news business right now, with layoffs intensifying and fancy new startups and funding going kaput.

The crisis facing journalism and democracy isn’t going away anytime soon. And neither is Mother Jones, our readers, or our unique way of doing in-depth reporting that exists to bring about change.

Which is exactly why, despite the challenges we face, we just took a big gulp and joined forces with the Center for Investigative Reporting, a team of ace journalists who create the amazing podcast and public radio show Reveal.

If you can part with even just a few bucks, please help us pick up the pace of donations. We simply can’t afford to keep falling behind on our fundraising targets month after month.

Editor-in-Chief Clara Jeffery said it well to our team recently, and that team 100 percent includes readers like you who make it all possible: “This is a year to prove that we can pull off this merger, grow our audiences and impact, attract more funding and keep growing. More broadly, it’s a year when the very future of both journalism and democracy is on the line. We have to go for every important story, every reader/listener/viewer, and leave it all on the field. I’m very proud of all the hard work that’s gotten us to this moment, and confident that we can meet it.”

Let’s do this. If you can right now, please support Mother Jones and investigative journalism with an urgently needed donation today.

payment methods

AN IMPORTANT UPDATE

We’re falling behind our online fundraising goals and we can’t sustain coming up short on donations month after month. Perhaps you’ve heard? It is impossibly hard in the news business right now, with layoffs intensifying and fancy new startups and funding going kaput.

The crisis facing journalism and democracy isn’t going away anytime soon. And neither is Mother Jones, our readers, or our unique way of doing in-depth reporting that exists to bring about change.

Which is exactly why, despite the challenges we face, we just took a big gulp and joined forces with the Center for Investigative Reporting, a team of ace journalists who create the amazing podcast and public radio show Reveal.

If you can part with even just a few bucks, please help us pick up the pace of donations. We simply can’t afford to keep falling behind on our fundraising targets month after month.

Editor-in-Chief Clara Jeffery said it well to our team recently, and that team 100 percent includes readers like you who make it all possible: “This is a year to prove that we can pull off this merger, grow our audiences and impact, attract more funding and keep growing. More broadly, it’s a year when the very future of both journalism and democracy is on the line. We have to go for every important story, every reader/listener/viewer, and leave it all on the field. I’m very proud of all the hard work that’s gotten us to this moment, and confident that we can meet it.”

Let’s do this. If you can right now, please support Mother Jones and investigative journalism with an urgently needed donation today.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly 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