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#aquaticlife

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Public
ombra

Loss of oxygen in bodies of #water identified as new #tippingpoint

#Aquatic #deoxygenation as a planetary boundary and key regulator of Earth system stability

#Climate #aquaticlife

geomar.de/en/news/article?tx_n

www.geomar.deLoss of oxygen in bodies of water identified as new tipping point15.07.2023/Kiel/New York. Oxygen concentrations in our planet's waters is decreasing rapidly and dramatically – from ponds to the ocean. The progressive loss of oxygen threatens not only ecosystems, but also the livelihoods of large sectors of society and the entire planet, according to the authors of an international study involving GEOMAR published today in the scientific journal Nature Ecology and Evolution. They call for the loss of oxygen in water bodies to be recognised as another Planetary Boundary in order to focus global monitoring, research and political measures.
Public
Martin Modrák

I've started another experiment with closed ecosystem in a jar. Three weeks in, it appears stable, I have some greenery, lovely snails - most hatched already within the jar, a hydra, a very active black speck I am unable to identify or photograph, small worms, and some tiny crustacean friends (copepods, daphnia, ostracods)...

I am surprised how happy it makes me to just watch those little guys go about their business.

A small freshwater ecosystem in a 3 liter jar.
A freshwater hydra, about 7mm in size attached to the inner surface of a glass jar.
A small round freshwater snail (~2mm) climbing the inside of a glass jar. My finger for size comparison.
A freshwater snail with a pointed shell, most likely Lymnaea stagnalis, about 7mm in size.
#LifeInJars#AquaticLife#Hydra
Public
JL Johnson :veri_mast:

Before coming to the conference I knew basically nothing about freshwater mussels. So that session was a real eye-opener. Here are some freshwater mussel facts.

- 300 species in North America. 75+ in Missouri.
- Among the most imperiled species in the U.S.
- They are parasites! I had no idea.
- So many unique ways of “infesting” host fish including luring them, and grabbing
- Garment buttons used to be made from their shells. Many modern day buttons are still made to look like them.

Bar chart showing 70% of freshwater mussels are vulnerable, imperiled, critically imperiled, or presumed extinct. Other species appear on the chart and are at much less risk
#missouri#aquaticlife#masternaturalist
Public
Puneet Singh Singhal

As Ocean Oxygen Levels Dip, Fish Face an Uncertain Future

Global warming not only increases ocean temperatures, it triggers a cascade of effects that are stripping the seas of oxygen.

Fish are already moving to new waters in search of oxygen, and scientists are warning of the long-term threat to fish species and marine ecosystems.

e360.yale.edu/features/as-ocea

Yale E360As Ocean Oxygen Levels Dip, Fish Face an Uncertain FutureGlobal warming not only increases ocean temperatures, it triggers a cascade of effects that are stripping the seas of oxygen. Fish are already moving to new waters in search of oxygen, and scientists are warning of the long-term threat to fish species and marine ecosystems.
Public
Hari Tulsidas

PLA bioplastics, a type of plastic made from plant-based materials, are often touted as a greener alternative to conventional plastics. However, a new study shows that PLA bioplastics, such as reduced growth, reproduction, and survival, can negatively impact aquatic life. The study suggests that PLA bioplastics are not as eco-friendly as they seem and that more research is needed to assess their environmental effects.

#PLA #Bioplastics #AquaticLife cosmosmagazine.com/nature/mari

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