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Decline of Species That Pollinate Poses a Threat to Global Food Supply, Report Warns

Discussion in 'News & Current Events' started by Crabtownboy, Feb 26, 2016.

  1. Crabtownboy

    Crabtownboy Well-Known Member
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    The birds and the bees need help. Also, the butterflies, moths, wasps, beetles and bats. Without an international effort, a new report warns, increasing numbers of species that promote the growth of hundreds of billions of dollars’ worth of food each year face extinction.

    The first global assessment of the threats to creatures that pollinate the world’s plants was released by a group affiliated with the United Nations on Friday in Kuala Lumpur, Malaysia. The summary will be posted onlineMonday.

    Pollinators, including some 20,000 species of wild bees, contribute to the growth of fruit, vegetables and many nuts, as well as flowering plants. Plants that depend on pollination make up 35 percent of global crop production volume with a value of as much as $577 billion a year. The agricultural system, for which pollinators play a key role, creates millions of jobs worldwide.

    Many pollinator species are threatened with extinction, including some 16 percent of vertebrates like birds and bats, according to the document.Hummingbirds and some 2,000 avian species that feed on nectar spread pollen as they move from flower to flower. Extinction risk for insects is not as well defined, the report notes, but it warned of “high levels of threat” for some bees and butterflies, with at least 9 percent of bee and butterfly species at risk.

    The causes of the pressure on these creatures intertwine: aggressive agricultural practices that grow crops on every available acre eliminate patches of wildflowers and cover crops that provide food for pollinators. Farming also exposes the creatures to pesticides, and bees are under attack from parasites and pathogens, as well.

    Climate change has an effect, as well, especially in the case of bumblebees in North America and Europe, said Sir Robert Watson, vice chairman of the group and director of strategic development at the Tyndall Centre for Climate Change Research at the University of East Anglia.

    A warming world changes the territories of plants and pollinators, and changes the plants’ time of flowering, as well, leading to a troubling question, posed by Dr. Watson: “Will the pollinators be there when the flowers need them?”


    http://www.nytimes.com/2016/02/27/s...-to-global-food-supply-report-warns.html?_r=0
     
  2. Revmitchell

    Revmitchell Well-Known Member
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    That is all that we need to know.
     
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