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Kassem

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  • @kassem
    Kassem @kassem CC BY-NC-SA 4/09/2017
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    9

    Grizzly bears go vegetarian due to climate change, choosing berries over salmon
    ▻http://www.telegraph.co.uk/news/2017/08/25/grizzly-bears-go-vegetarian-due-climate-change-choosing-berries

    http://www.telegraph.co.uk/content/dam/news/2017/08/28/TELEMMGLPICT000137578259-xlarge_trans_NvBQzQNjv4BqejI1gRHJsOsGt35KcRG67xws2wuoei9M_HFF16UY7UM.jpeg

    The study found that during the unusually warm summer of 2014, the bears, which would traditionally kill up to 75 percent of the salmon, were nowhere to be seen near the streams.

    Instead, they were in the hills busy munching on berries, which contain less protein and therefore take less energy to break down, causing them to gain weight more quickly.

    Biologists warned that changes caused by a warming planet were behind the bears’ unusual behavior and could affect the entire ecosystem.

    The researchers found that the forests around the streams suffered because the bears’ fish carcasses were no longer there to enrich the soil.

    “Bears switched from eating salmon to elderberries, disrupting an ecological link that typically fertilizes terrestrial ecosystems and generates high mortality rates for salmon,” the study said.

    On average, red elderberries are said to be ripening two and a half days earlier every decade.

    If the pattern continues, they will regularly overlap with the salmon by 2070.

    The study was published in the Proceedings of the National Academy of Sciences.

    #climat #alimentation #ours #écosystème #sols

    Kassem @kassem CC BY-NC-SA
    • @kassem
      Kassem @kassem CC BY-NC-SA 5/09/2017

      L’ours #grizzly est en train de devenir végétarien à cause du changement climatique
      ▻https://fr.metrotime.be/2017/08/31/actualite/lours-grizzly-train-de-devenir-vegetarien-a-cause-changement-climatique

      Kassem @kassem CC BY-NC-SA
    • @nicolasm
      Nicolas🌱 @nicolasm CC BY-SA 6/09/2017

      J’ai du mal à croire que des baies permettent de prendre plus de poids que des saumons

      Nicolas🌱 @nicolasm CC BY-SA
    • @alexcorp
      alexcorp @alexcorp CC BY-NC 6/09/2017

      L’ours des cavernes, qui était en moyenne plus gros, était quasi végétarien (bon espérons que le grizzly ne disparaisse pas comme son ancêtre).

      alexcorp @alexcorp CC BY-NC
    • @nicolasm
      Nicolas🌱 @nicolasm CC BY-SA 6/09/2017

      Oui mais il y a plein d’aliments végétaux plus caloriques que les baies

      Nicolas🌱 @nicolasm CC BY-SA
    • @sinehebdo
      Dror@sinehebdo @sinehebdo 26/09/2017

      Pendant ce temps, les humains :

      Why I gave up being vegan
      Jennifer Scott, BBC News, le 5 septembre 2017
      ▻https://seenthis.net/messages/632442

      #Végétariens #Vegans #Viande

      Dror@sinehebdo @sinehebdo
    • @sinehebdo
      Dror@sinehebdo @sinehebdo 27/09/2017

      #effondrement #collapsologie #catastrophe #fin_du_monde #it_has_begun #Anthropocène #capitalocène

      Ajouter à la compilation :
      ►https://seenthis.net/messages/499739

      Dror@sinehebdo @sinehebdo
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thèmes

  • #alimentation
  • #climat
  • #écosystème
  • #ours
  • #sols
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