• woodrow wilson center
  • ecsp

New Security Beat

Subscribe:
  • mail-to
  • Who We Are
  • Topics
    • Population
    • Environment
    • Security
    • Health
    • Development
  • Columns
    • China Environment Forum
    • Choke Point
    • Dot-Mom
    • Navigating the Poles
    • New Security Broadcast
    • Reading Radar
  • Multimedia
    • Water Stories (Podcast Series)
    • Backdraft (Podcast Series)
    • Tracking the Energy Titans (Interactive)
  • Films
    • Water, Conflict, and Peacebuilding (Animated Short)
    • Paving the Way (Ethiopia)
    • Broken Landscape (India)
    • Scaling the Mountain (Nepal)
    • Healthy People, Healthy Environment (Tanzania)
  • Publications
  • Events
  • Contact Us

NewSecurityBeat

The blog of the Wilson Center's Environmental Change and Security Program
  • Lisa Palmer, Yale Environment 360

    New Explanation for Bee Die-Offs and What It Means for Human and Environmental Health

    May 12, 2016 By Wilson Center Staff
    bee pollen2

    The original version of this article, by Lisa Palmer, appeared on Yale Environment 360.

    Specimens of goldenrod sewn into archival paper folders are stacked floor to ceiling inside metal cabinets at the Smithsonian National Museum of Natural History. The collection, housed in the herbarium, dates back to 1842 and is among five million historical records of plants from around the world cataloged there. Researchers turned to this collection of goldenrod – a widely distributed perennial plant that blooms across North America from summer to late fall – to study concentrations of protein in goldenrod pollen because it is a key late-season food source for bees. 

    The newer samples look much like the older generations. But scientists testing the pollen content from goldenrod collected between 1842 and 2014, when atmospheric concentrations of carbon dioxide rose from about 280 parts per million to 398 ppm, found the most recent pollen samples contained 30 percent less protein. The greatest drop in protein occurred from 1960 to 2014, when the amount of carbon dioxide in the atmosphere rose dramatically. A field experiment in the same study that exposed goldenrod to CO2 levels ranging from 280 to 500 ppm showed similar protein decreases. 

    More than 100 previous studies have shown that elevated levels of atmospheric carbon dioxide decrease the nutritional value of plants, such as wheat and rice. But the goldenrod study, published last month, was the first to examine the effects of rising CO2 on the diet of bees, and its conclusions were unsettling: The adverse impact of rising CO2 concentrations on the protein levels in pollen may be playing a role in the global die-off of bee populations by undermining bee nutrition and reproductive success. 

    Continue reading on Yale Environment 360.

    Sources: Proceedings of the Royal Society B, Yale Environment 360.

    Photo Credit: Flickr user Theophilos Papadopoulos.

    Topics: climate change, conservation, development, environment, environmental health, food security, international environmental governance, nutrition, U.S.
    • VooDude

      Oh, I really I can’t BEElieve that you’re making a “Climate Change” issue of this.

      Fossil Apis (bees) with pollen sacs are found when CO2 was more than twice what it is, today … 32-34 million years ago.

Join the Conversation

  • RSS
  • subscribe
  • facebook
  • G+
  • twitter
  • iTunes
  • podomatic
  • youtube
Tweets by NewSecurityBeat

Trending Stories

  • unfccclogo1
  • Pop at COP: Population and Family Planning at the UN Climate Negotiations

Featured Media

Backdraft Podcast

play Backdraft
Podcasts

More »

What You're Saying

  • 49890944808_c7d6dfef74_c Why Feminism Is Good for Your Health
    Melinda Cadwallader: "Feminism materializes through investment in human capital and caregiving sectors of the economy...
  • 49890944808_c7d6dfef74_c Why Feminism Is Good for Your Health
    Melinda Cadwallader: People who refuse to acknowledge patriarchy are often the ones who benefit from it. So please, say...
  • Water desalination pipes A Tale of Two Coastlines: Desalination in China and California
    Dr S Sundaramoorthy: It is all fine as theory. What about the energy cost? Arabian Gulf has the money from its own oil....
  • woodrow
  • ecsp
  • RSS Feed
  • YouTube
  • Twitter
  • Facebook
  • Home
  • Who We Are
  • Publications
  • Events
  • Wilson Center
  • Contact Us
  • Print Friendly Page

© Copyright 2007-2023. Environmental Change and Security Program.

Woodrow Wilson International Center for Scholars. All rights reserved.

Developed by Vico Rock Media

Environmental Change and Security Program

Woodrow Wilson International Center for Scholars

Ronald Reagan Building and International Trade Center

  • One Woodrow Wilson Plaza
  • 1300 Pennsylvania Ave., NW
  • Washington, DC 20004-3027

T 202-691-4000