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Ingenting er viktigere enn havet, og 2020 blir et avgjørende år både for havet og for menneskeheten


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Som vanlig er nesten all oppmerksomhet rettet mot klima (les: CO2) men allerede eksisterende problemer som kjemikalier, plast, fremmede arter fra ballastvann osv ignoreres. Overfiske er heldigvis på agendaen men her er det mye feil fokus. Men det er vel behagelig å snakke om noe som kanskje skjer om 50 - 100 år fremfor det som allerede biter oss i leggen?

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L11I9SZV skrev (16 timer siden):

behagelig å snakke om noe som kanskje skjer om 50 - 100 år fremfor det som allerede biter oss i leggen?

Naivt å tro at disse folka faktisk bryr seg. At det er ikke finnes plastkvoter eller plastresirkuleringssubsidier forklarer alt. Follow the money.

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Blir hard jobb

"Three-quarters of the land-based environment and about 66% of the marine environment have been significantly altered by human actions. On average these trends have been less severe or avoided in areas held or managed by Indigenous Peoples and Local Communities.

More than a third of the world’s land surface and nearly 75% of freshwater resources are now devoted to crop or livestock production.

The value of agricultural crop production has increased by about 300% since 1970, raw timber harvest has risen by 45% and approximately 60 billion tons of renewable and nonrenewable resources are now extracted globally every year – having nearly doubled since 1980.

Land degradation has reduced the productivity of 23% of the global land surface, up to US$577 billion in annual global crops are at risk from pollinator loss and 100-300 million people are at increased risk of floods and hurricanes because of loss of coastal habitats and protection.

In 2015, 33% of marine fish stocks were being harvested at unsustainable levels; 60% were maximally sustainably fished, with just 7% harvested at levels lower than what can be sustainably fished.

Urban areas have more than doubled since 1992.

Plastic pollution has increased tenfold since 1980, 300-400 million tons of heavy metals, solvents, toxic sludge and other wastes from industrial facilities are dumped annually into the world’s waters, and fertilizers entering coastal ecosystems have produced more than 400 ocean ‘dead zones’, totalling more than 245,000 km2 (591-595) - a combined area greater than that of the United Kingdom.

Negative trends in nature will continue to 2050 and beyond in all of the policy scenarios explored in the Report, except those that include transformative change – due to the projected impacts of increasing land-use change, exploitation of organisms and climate change, although with significant differences between regions."

https://ipbes.net/news/Media-Release-Global-Assessment

Og så spår FN at verdens befolkning øker med 44 % til 11.2 milliarder, 3.1 av de kommer i Afrika, totalen der blir 4.3 milliarder, tre ganger så mange som Kinas befolkning nå.

Men FN mener det er ikke noe problem.

"Ocean deoxygenation : everyone’s problem" https://portals.iucn.org/library/node/48892

I tillegg bruker økende befolkning større og større del av ferskvann fra elvene, noe som til slutt må begynne å påvirke saliniteten i havet.

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