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Joined 3 years ago
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Cake day: June 3rd, 2023

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  • Previously, Steffen et al. (2) proposed using the Biodiversity Intactness Index (BII) (27), an empirically based metric of human impacts on population abundances, as an interim proxy for functional biosphere integrity. It was noted, however, that the link of BII to Earth system functions remains poorly understood and BII cannot be directly linked to the planetary biogeochemical and energy flows relevant for establishing Earth system state. In addition, BII relies on expert elicitation to estimate temporal changes in species abundances/distributions, and this knowledge is not readily available for many regions, including the oceans. Martin et al. (28) have also recently suggested that BII only partially reflects human impacts on Earth system.

    We therefore now replace this metric with a computable proxy for photosynthetic energy and materials flow into the biosphere (29), i.e., net primary production (NPP), and define the functional component of the biosphere integrity boundary as a limit to the human appropriation of the biosphere’s NPP (HANPP) as a fraction of its Holocene NPP. NPP is fundamental for both ecosystems and human societies as it supports their maintenance, reproduction, differentiation, networking, and growth. Biomes depend on the energy flow associated with NPP to maintain their planetary ecological functions as integral parts of Earth system. NPP-based energy flows into human societies should therefore not substantially compromise the energy flow to the biosphere (30). The proxy complements the diversity-based dimensions of biosphere integrity, covered by the genetic component, which captures the importance of variability in living organisms for the functioning of ecosystems. The suitability of NPP and HANPP for defining a planetary boundary has previously been discussed by Running (31) and Haberl et al. (32).

    That’s regarding the method for biosphere integrity from the paper.






  • We have seen, that people and societies are extremely adaptable to changes in lifestyle. The transformation of the Netherlands to a cycling -friendly country for example. Car free city centers. People were very opposed to them before. But once the changes were made, people were happy with them and adapted to the new options. There’s also negative examples where people adapted to new negative lifestyles such as car centric cities. Or smog, pollution, garbage landfills, or rivers that one is not allowed to swim in due to pollution. People are surprisingly adaptable to new conditions. We just have to do it.








  • The argument of saving the economy is often brought forward as an argument against climate protection. In a rather recent example, the German finance minister Christian Lindner told climate activists: “the market is stronger than you.” This seems to be the stupidest argument in the history of arguments, maybe ever.

    Posting and liking memes is great, but real change comes from actions. If you are as concerned as we are about climate change, please consider joining or supporting climate activists near you.





  • That’s very true. But I think that stems in part from the fact that some of the most prominent climate science (such as the IPCC report) features the consensus of many scientists. All climate scientists will agree on low estimates that we are very sure of. But there have been some models predicting faster increases of global temperatures than we have seen. If we would look at the average of scientific claims instead of the consensus, we might be more close to the truth.

    Nevertheless, science has been pretty right overall. Of course, not exactly right, but that wouldn’t fit in a meme.



  • Climate science denialism is nothing new. It has been going on for decades. The Greenhouse effect has been known for more than 100 years. There have been urgent public warnings from scientists for more than 40 years. Right now, science warns that the Atlantic meridional overturning circulation (AMOC) will break down (link). If we carry on like this, it will be a question of when, not if. This is just one example. Each example should cause immediate global political action. Instead, we’re living the meme.

    Once again: Posting and liking memes is great, but real change comes from actions. If you are as concerned as we are about climate change, please consider joining or supporting climate activists near you.



  • Events of the past months have left us quite angry about the state of the climate crisis. So me and friends will be posting more memes about climate now (on lemmy and instagram). This is the start. Let’s see how it goes.

    However: Posting and liking memes is great, but real change comes from actions. If you are as concerned as we are about climate change, please consider joining or supporting climate activists near you.