Rapport spécial du GIEC sur le changement climatique,
la désertification, la dégradation des sols, la gestion durable
des terres, la sécurité alimentaire et les flux de gaz à effet de
serre dans les écosystèmes terrestres
Relatório especial do IPCC sobre mudança do clima,
desertificação, degradação da terra, manejo sustentável da
terra, segurança alimentar, e fluxos de gases de efeito estufa
em ecossistemas terrestres
PlosOne December 10, 2014 https://doi.org/10.1371/journal.pone.0111913
Plastic pollution is ubiquitous throughout the marine environment, yet estimates of the global abundance and weight of floating plastics have lacked data, particularly from the Southern Hemisphere and remote regions. Here we re
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port an estimate of the total number of plastic particles and their weight floating in the world's oceans from 24 expeditions (2007–2013) across all five sub-tropical gyres, costal Australia, Bay of Bengal and the Mediterranean Sea conducting surface net tows (N = 680) and visual survey transects of large plastic debris (N = 891). Using an oceanographic model of floating debris dispersal calibrated by our data, and correcting for wind-driven vertical mixing, we estimate a minimum of 5.25 trillion particles weighing 268,940 tons. When comparing between four size classes, two microplastic <4.75 mm and meso- and macroplastic >4.75 mm, a tremendous loss of microplastics is observed from the sea surface compared to expected rates of fragmentation, suggesting there are mechanisms at play that remove <4.75 mm plastic particles from the ocean surface.
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For the first time, we are forced to consider the real risk of destabilizing the entire planet," says climate impact scholar Johan Rockström. In a talk backed by vivid animations of the climate crisis, he shows how nine out of the 15 big biophysical systems that regulate the climate -- from the per
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mafrost of Siberia to the great forests of the North to the Amazon rainforest -- are at risk of reaching tipping points, which could make Earth uninhabitable for humanity. Hear his plan for putting the planet back on the path of sustainability over the next 10 years -- and protecting the future of our children.
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Agriculture is highly exposed to climate change, as farming activities directly depend on climatic conditions. Agriculture also contributes to climate change through the release of greenhouse gases into the atmosphere. Two powerful greenhouse gases are by-products of agricultural activity:
Methan
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e (CH4) – from livestock digestion processes and stored animal manure;
Nitrous oxide (N2O) – from organic and mineral nitrogen fertilisers.
However, agriculture can also contribute to climate change mitigation by reducing greenhouse gas emissions and by sequestering carbon while maintaining food production.
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Published: November 24, 2020 https://doi.org/10.1371/journal.pbio.3000938
Climate change is expected to have complex effects on infectious diseases, causing some to increase, others to decrease, and many to shift their distributions. There have been several important advances in understanding the
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role of climate and climate change on wildlife and human infectious disease dynamics over the past several years. This essay examines 3 major areas of advancement, which include improvements to mechanistic disease models, investigations into the importance of climate variability to disease dynamics, and understanding the consequences of thermal mismatches between host and parasites. Applying the new information derived from these advances to climate–disease models and addressing the pressing knowledge gaps that we identify should improve the capacity to predict how climate change will affect disease risk for both wildlife and humans.
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Die Deutsche Allianz Klimawandel und Gesundheit (KLUG) gründete sich im Oktober 2017 als Netzwerk von Einzelpersonen, Organisationen und Verbänden aus dem gesamten Gesundheitsbereich.
Dazu vernetzen sich die Akteure quer zu Sektoren und Hierarchien in der gesamten Gesellschaft und werden insbeson
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dere auf kommunaler und lokaler Ebene in ihrem Umfeld aktiv. Klimaschutz und Abmilderung (Mitigation) der Folgen der Erderwärmung müssen in Forschung, Aus- und Weiterbildung integriert bzw. verstärkt werden.
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