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Global phytoplankton decline over the past century

Daniel G. Boyce, Marlon R. Lewis, Boris Worm

2010 · Nature

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7 selected excerpts · 7 total mentions

esarbe
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I think it's antithetical to individual liberty to destroy our shared life support system. It's about as antithetical to liberty as you can get. What we're currently doing is externalization of costs on a gargantuan scale. We're dumping humongous amounts of carbon dioxide into the atmosphere and are ignoring the problems that causes for the whole ecosystem. I fail to see how you can try to defend our current climate regime from a libertarian perspective. A libertarian should be outraged by this appropriation of the common good, an infraction on the freedom of us all. And the damage done to our biological life support system is devastating! We've wiped out 60% percents of…
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mammals, birds, fish and reptiles since the 1970 (https://s3.amazonaws.com/wwfassets/downloads/lpr2018_summary...). We've killed about 30% of the insect population: https://en.wikipedia.org/wiki/Decline_in_insect_populations Phytoplankton has been reduced by 50% since the 1950s https://www.nature.com/articles/nature09268 . You know, that's the stuff that produces our oxygen (https://earthsky.org/earth/how-much-do-oceans-add-to-worlds-...). An increase in temperature of about 5°C and more will probably kill off most phytoplankton. Damages like these are infractions on our freedom to live healthily, they even encroach on our most basic right; the right to reproduce, endowed to us by our nature as biological organisms. I don't think inaction on the climate crisis is supported by a libertarian worldview.
pygy_
Neutral mention · rule
[2010], here's the paper referenced in the article: https://www.nature.com/articles/nature09268 I knew we had fucked up the oceans with plastics and overfishing, but I didn't know that phytoplankton was down as well, at such a scale. Per TFA, it provided 50% of the Earth's photosynthesis (in 2010). If it kept on dwindling that fast, that share is even lower now (down ~45%, with a half-life of 81 years, assuming the decline was constant between 1950 and 2010). This is also freaky knowing that it is the base of the food chain in the oceans... I don't have any idea of the amount of oxygen that's cycled each year vs the total amount in the atmosphere... I suppose there's no immediate danger on that end, even if it were to drop to an even lower point before recovering, otherwise we'd have heard of this more often...
makerofspoons
Neutral mention · rule
I was looking for a citation that was not paywalled- here is a Nature study that corroborates my claim that we have lost around half of the phytoplankton since 1950: https://www.nature.com/articles/nature09268 If this is true I would expect the populations of sea birds and sea life to plunge, which they have. The WWF published a report in 2015 that showed that marine vertebrates have declined by 49% from 1970 to 2012: https://www.worldwildlife.org/publications/living-blue-plane... I'm not sure how I misread the vitamin B1 article, phytoplankton is cited as a potential cause of the problem several times in the section 'A Sea of Possibilities'. There is also plenty of cause for concern about human extinction- between the insect die off and the marine die off it is unclear how we will be able to produce food going forward.
adrianN
Neutral mention · rule
If you want to scare people you can tell them that Phytoplankton is sensitive to ocean warming and has been declining over the last century [1] (and the situation has not improved since 2010 [2]). On land, plants don't really like global heating either [3]. Together these effects directly threaten not only the food chain, but oxygen supply itself. [1] https://www.nature.com/articles/nature09268 [2] https://www.cbc.ca/news/canada/newfoundland-labrador/ocean-p... [3] https://journals.plos.org/plosbiology/article?id=10.1371/jou...
esarbe
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I don't know where you got the 10 years from. Yes, we've got more people than ever. There is less poverty and hunger than ever. The world is more peaceful than ever. That's because we've been on a glut of predatory ecosystem exploitation for the last 150 years. The signs that we are running headlong into a global ecosystem collapse are everywhere. So my view is pretty much based in reality, so here are my facts. If you care to check them. We've wiped out 60% percents of mammals, birds, fish and reptiles since the 1970 (https://s3.amazonaws.com/wwfassets/downloads/lpr2018_summary...). We've killed about 30% of the insect population:…
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https://en.wikipedia.org/wiki/Decline_in_insect_populations Phytoplankton has been reduced by 50% since the 1950s https://www.nature.com/articles/nature09268 . You know, that's the stuff that produces our oxygen (https://earthsky.org/earth/how-much-do-oceans-add-to-worlds-...). An increase in temperature of about 5°C and more will probably kill off most phytoplankton. These are just some documented and recorded facts. Now we get to the fun part, where we think about their impact. Let's take for a given that the antrophogenic climate change won't stop at the blue-sky +2°C that everyone is hoping so hard for (hoping, not acting). According to IPCC 2018, we're CURRENTLY between +0.75 and +1.25°C, with the very real possibility of reaching +2°C by the 2040. We thought that we had about 30 years to mitigate some of the worst damage. But now - holy shit! - the arctic permafrost is melting, about 70 years earlier than expected. And it's starting to release methane, a way more potent greenhouse gas than CO2. Sure, it rapidly decays in the atmosphere, but not before kicking us to about +4°C. This is the temperature range where some Scientists fear that frozen methane from the ocean floor will start to be released. (Do you remember that at about +5°Celsius the phytoplankton will start dying off? ) So, we have a massive temperature increase at an unprecedented speed that makes huge areas of earths most populous regions inhospitable or even inhabitable. Do you think the Syrian refugee crisis was bad? Think about ~1 BILLION PEOPLE on the search for greener (literally) pastures. Do you think they will be welcome with open arms? Yeah, you bet.. Agriculture will be severely impacted. Not only by the heat, but also by the massive die-off that ensues. Most of the animals on earth have a lifecycle that's very closely tuned to the hum of the seasons. At +4°C you can kiss all that goodbye. The only things that will survive are generalist species that have a lifecycle not tied to the seasons. (Cockroaches maybe. Certainly not butterflies. Enjoy them while they last!) There will also be terrible conflicts and wars about the most precious resource of them all. No, not oil. We'll have oil in barrels, nobody will be lacking oil (at least at first). No, I mean water. We'll have water wars. This will also be the time that the global economy will start to collapse. War is good for only one business, and that's weapons. Everything else will suffer. Don't expect any deliveries from your Chinese online shop of choice. Consumer markets will crash, everything will come to a standstill. No, I don't stockpile. Because this is going to happen over the course the next 30 years and I'll be long dead when the really bad shit is starting to happen. I've trained my kids to be able to work with wood and scrap metals to improvise all kinds of tools and machines. All of them are also receiving training as horticulturalists, for what's that worth. That's the least I can do for them.
adrianN
Neutral mention · rule
Phytoplankton is already declining: > We observe declines in eight out of ten ocean regions, and estimate a global rate of decline of ∼1% of the global median per year. Our analyses further reveal interannual to decadal phytoplankton fluctuations superimposed on long-term trends. These fluctuations are strongly correlated with basin-scale climate indices, whereas long-term declining trends are related to increasing sea surface temperatures. https://www.nature.com/articles/nature09268

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