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Scoop.it!
Une étude parue dans la revue « BioScience » fait état de l'imminence de certains « points de rupture » climatiques. Les politiques pour lutter contre le changement climatique ne s'attaquent pas à la source du problème : la surexploitation de la planète par les humains. Sur les 31 « signes vitaux » de la planète, qui incluent les émissions de gaz à effet de serre, l’épaisseur des glaciers ou la déforestation, 18 atteignent des records, selon ce texte scientifique. 
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Scoop.it!
Risky times and risky places Predator–prey interactions, such as between cheetahs and zebras in Liuwa Plain National Park in Zambia, reveal the relationship between types of risk. In locations with high long-term risk, prey vigilance was strong when short-term risk was also high but not when short-term risk was low. See Dröge et al. 1, 1123–1128 (2017)
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A noter les articles suivants :
- Biodiversity at risk under future cropland expansion and intensification - Laura Kehoe, Alfredo Romero-Muñoz[…] & Tobias Kuemmerle - The spatial scales of species coexistence Our understanding of how species diversity is maintained depends on spatial scale. Here, the coexistence–area relationship is developed to understand scale dependence and increase community ecology’s contribution to biodiversity conservation. Simon P. Hart, Jacob Usinowicz & Jonathan M. Levine
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L'un des scientifiques est le Dr. William J. Ripple, Oregon State University; qui communique sur Twitter @WilliamJRipple