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Whales and Butterflies: The Migration Effect (7 of 9)

Caption: Several species of geese migrate between breeding grounds in the Arctic and wintering grounds in Central and Western Europe. Most of these goose populations have rapidly increased in size in the last 20 to 30 years (including populations of Barnacle goose (Branta leucopsis) shown here, foraging in The Netherlands). This has resulted in immense grazing pressure on wintering, breeding and intermediate stop-over locations that has led to both overgrazing of natural vegetation and conflicts with agriculture. This image relates to a paper that appeared in the 4 April, 2014, issue of Science, published by AAAS. The paper, by Silke Bauer at Swiss Ornithological Institute in Sempach, Switzerland, and colleagues was titled, "Migratory Animals Couple Biodiversity and Ecosystem Functioning Worldwide."

Credit: [© Bethany Hoye]

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