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As ocean oxygen levels dip, fish face an uncertain future

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11–20 of 159 posts

Re: As ocean oxygen levels dip, fish face an uncertain future

#11
post #8

Looks like we are the paper clip optimising narrow AI we’ve all been afraid of after all… We don’t make paper clips though, we’ve optimised to make money and turn everything into it. So ashamed to be part of of it,

We've optimized so hard we can make money out of negative money.

Re: As ocean oxygen levels dip, fish face an uncertain future

#12
> The oxygen drop is driven by a few factors. First, the laws of physics dictate that warmer water can hold less dissolved gas than cooler water (this is why a warm soda is less fizzy than a cold one).

> Melting ice adds fresh, less-dense water that resists downward mixing in key regions, and the high rate of atmospheric warming at the poles, as compared to the equator, also dampens winds that drive ocean currents.

> Finally, bacteria living in the water, which feed off phytoplankton and other organic gunk as it falls to the seafloor, consume oxygen. This effect can be massive along coastlines, where fertilizer runoff feeds algae blooms, which in turn feed oxygen-gobbling bacteria

Re: As ocean oxygen levels dip, fish face an uncertain future

#13
post #10

I think a (dis)info campaign touting the toxins and pollutants in fish could be a major environmental win. Humans have destroyed huge amounts of ocean life, and with fish populations already devastated, climate change is going to push many species over the brink to extinct. I feel like - even if requires pseudoscientific explanations or bald-faced lies - it would be a net good for the world if people thought there is…

No disinformation campaigns are necessary.

Fish do indeed often contain heavy metals (mercury, lead, cadmium, arsenic, copper), PCBs, dioxins, and furans, as well as microplastics.

Young dolphins are dying because the mother's milk may be poisonous for the same reason.

https://phys.org/news/2018-12-toxins-mother-young-european-d...

Banned toxins passed from mother to young in European dolphins

https://www.poisoningchildren.com/blog/2014/02/05/bioaccumul...

Bioaccumulation and Dead Baby Dolphins

"Because female dolphins off-load most of their toxic exposure to their first-born calf, their levels after sexual maturity are lower than males; but a very high percentage of first-borns die"

"It is not astonishing that native women in the Arctic Circle, who eat high levels of marine mammals, pass these chemicals on to their babies with dire effects"

"Childbirth and breastfeeding are some of the few ways the body can rid itself of persistent chemicals. It is usually still best to breastfeed, but children who are breastfed continue to inherit the mother’s exposures, as shown in a study of testicular cancer in Denmark and Finland"

Btw, human and cow milk has similar problems.

Re: As ocean oxygen levels dip, fish face an uncertain future

#15

Good. They should tough it out and grow a pair—of lungs, that is. Living in an aquatic environment has made all the fish grow soft. Time to evolve like the rest of us did. (More seriously, warm ocean dead spots affect more than just fish: I suspect we’ll see a further decline in marine mammals too, for example.)

Free market solves it /s

Re: As ocean oxygen levels dip, fish face an uncertain future

#16
post #10

I think a (dis)info campaign touting the toxins and pollutants in fish could be a major environmental win. Humans have destroyed huge amounts of ocean life, and with fish populations already devastated, climate change is going to push many species over the brink to extinct. I feel like - even if requires pseudoscientific explanations or bald-faced lies - it would be a net good for the world if people thought there is…

At that point it would be better to supply the demand for fish with fish farms where they are bred to be eaten rather than pulling fish from the ocean. You could (truthfully) advertise as environmentally friendly, you would probably turn a profit, you actually would have fewer toxins than ocean fish, and ocean fish would be proportionally fished less. Much more straightforward of a process than conspiring/bribing countless people to spread disinformation and giving credit to conspiracy theorists.

Re: As ocean oxygen levels dip, fish face an uncertain future

#17

Good. They should tough it out and grow a pair—of lungs, that is. Living in an aquatic environment has made all the fish grow soft. Time to evolve like the rest of us did. (More seriously, warm ocean dead spots affect more than just fish: I suspect we’ll see a further decline in marine mammals too, for example.)

[flagged]

Re: As ocean oxygen levels dip, fish face an uncertain future

#18
post #16
post #10

I think a (dis)info campaign touting the toxins and pollutants in fish could be a major environmental win. Humans have destroyed huge amounts of ocean life, and with fish populations already devastated, climate change is going to push many species over the brink to extinct. I feel like - even if requires pseudoscientific explanations or bald-faced lies - it would be a net good for the world if people thought there is…

At that point it would be better to supply the demand for fish with fish farms where they are bred to be eaten rather than pulling fish from the ocean. You could (truthfully) advertise as environmentally friendly, you would probably turn a profit, you actually would have fewer toxins than ocean fish, and ocean fish would be proportionally fished less. Much more straightforward of a process than conspiring/bribing cou…

Still few problems with this.

- intensive fish farming can lead to environmental issues, such as water pollution from fish waste, excessive use of antibiotics and chemicals, and the depletion of wild fish stocks used for fish feed

- some farmed fish species require a substantial amount of wild-caught fish to produce a relatively small amount of farmed fish

- the conversion of natural habitats like mangroves and wetlands into fish farms can lead to habitat destruction and loss of critical ecosystems that support various species

- in densely packed fish farms, diseases spread rapidly among fish populations, leading to mass mortality events. The use of antibiotics to control diseases can also contribute to antibiotic resistance, posing risks to human health

- introducing non-native or genetically modified fish into local ecosystems can disrupt the balance of the ecosystem and lead to unintended consequences

We have to switch to plant based diets.

It seems to me that nothing else will stop the environmental destruction, in this case overfishing, which alone threatens us with empty oceans in 2040's.

And it would solve the problem with warming oceans too.

Rapid phase-out of fossil fuels, together with a switch to a plant-based diet, would free up a land area the size of Africa. When reforested, this area would store so much carbon that we'd be able to store our entire 1.5C carbon budget in those forests and initiate a new "little ice age."

Re: As ocean oxygen levels dip, fish face an uncertain future

#19
post #13
post #10

I think a (dis)info campaign touting the toxins and pollutants in fish could be a major environmental win. Humans have destroyed huge amounts of ocean life, and with fish populations already devastated, climate change is going to push many species over the brink to extinct. I feel like - even if requires pseudoscientific explanations or bald-faced lies - it would be a net good for the world if people thought there is…

No disinformation campaigns are necessary. Fish do indeed often contain heavy metals (mercury, lead, cadmium, arsenic, copper), PCBs, dioxins, and furans, as well as microplastics. Young dolphins are dying because the mother's milk may be poisonous for the same reason. https://phys.org/news/2018-12-toxins-mother-young-european-d... Banned toxins passed from mother to young in European dolphins https://www.poisoningch…

Ah, so just needs an awareness campaign! Even more of a clear moral win then if it doesn't require deception.

(also, yikes and tragic)

Re: As ocean oxygen levels dip, fish face an uncertain future

#20
post #3

Aside from Ocean Acidification, uncontrollable Algae Blooms, and Melting Sea Ice, we now have Ocean Deoxygenation on our plates. We also have unprecedented droughts on land as well. Humans really will be the next mass extinction event on this planet. So incredibly selfish.

Acidification is the unavailability to carry hydrogen molecules.

The primary hydrogen carrier in water is oxygen.

Are deoxygenation & acidification different problem, or different slants on the same problem?

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