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Träfflista för sökning "WFRF:(Döll Petra) "

Search: WFRF:(Döll Petra)

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1.
  • Field, Christopher B., et al. (author)
  • Summary for Policymakers
  • 2014
  • In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and SectoralAspects.. - 9781107415379 ; , s. 1-32
  • Book chapter (peer-reviewed)
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2.
  • Chrysafi, Anna, et al. (author)
  • Quantifying Earth system interactions for sustainable food production via expert elicitation
  • 2022
  • In: Nature Sustainability. - : Springer Science and Business Media LLC. - 2398-9629. ; 5:10, s. 830-842
  • Journal article (peer-reviewed)abstract
    • Several safe boundaries of critical Earth system processes have already been crossed due to human perturbations; not accounting for their interactions may further narrow the safe operating space for humanity. Using expert knowledge elicitation, we explored interactions among seven variables representing Earth system processes relevant to food production, identifying many interactions little explored in Earth system literature. We found that green water and land system change affect other Earth system processes strongly, while land, freshwater and ocean components of biosphere integrity are the most impacted by other Earth system processes, most notably blue water and biogeochemical flows. We also mapped a complex network of mechanisms mediating these interactions and created a future research prioritization scheme based on interaction strengths and existing knowledge gaps. Our study improves the understanding of Earth system interactions, with sustainability implications including improved Earth system modelling and more explicit biophysical limits for future food production.
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3.
  • Lehner, Bernhard, et al. (author)
  • High-resolution mapping of the world’sreservoirs and dams for sustainableriver-flow management
  • 2011
  • In: Frontiers in Ecology and the Environment. - Washington : Ecological Society of America. - 1540-9295 .- 1540-9309. ; 9:9, s. 494-502
  • Journal article (peer-reviewed)abstract
    • Despite the recognized importance of reservoirs and dams, global datasets describing their characteristics and geographical distribution are largely incomplete. To enable advanced assessments of the role and effects of dams within the global river network and to support strategies for mitigating ecohydrological and socioeconomic costs, we introduce here the spatially explicit and hydrologically linked Global Reservoir and Dam database (GRanD). As of early 2011, GRanD contains information regarding 6862 dams and their associated reservoirs, with a total storage capacity of 6197 km3. On the basis of these records, we estimate that about 16.7 million reservoirs larger than 0.01 ha – with a combined storage capacity of approximately 8070 km3 – may exist worldwide, increasing Earth's terrestrial surface water area by more than 305 000 km2. We find that 575 900 river kilometers, or 7.6% of the world's rivers with average flows above 1 cubic meter per second (m3 s−1), are affected by a cumulative upstream reservoir capacity that exceeds 2% of their annual flow; the impact is highest for large rivers with average flows above 1000 m3 s−1, of which 46.7% are affected. Finally, a sensitivity analysis suggests that smaller reservoirs have substantial impacts on the spatial extent of flow alterations despite their minor role in total reservoir capacity.Read More: http://www.esajournals.org/doi/abs/10.1890/100125
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