#southern-ocean

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#southern-right-whale #breeding-decline #climate-change #west-antarctic-ice-sheet #iron-fertilization
Environment
fromwww.theguardian.com
5 hours ago

Climate crisis linked to fall in southern right whale birth rates as researchers raise warning signal'

Southern right whales have shifted from three-year to four- or five-year calving cycles since 2017, linked to climate-driven changes in Antarctic foraging grounds.
fromState of the Planet
1 week ago

Unexpected Climate Feedback Links Antarctic Ice Sheet With Reduced Carbon Uptake

Ice-sheet retreat lined up with low algae growth over the past ~500,000 years, implying less CO₂ uptake in parts of the Southern Ocean during warm periods. The study points to iceberg-delivered, iron-rich sediments from West Antarctica during warm intervals, not windblown dust. The iron-bearing minerals in these sediments were highly weathered and not readily bioavailable to marine algae. If WAIS keeps shrinking, similar sediment delivery could weaken Southern Ocean carbon uptake, creating feedback that could amplify climate change.
Environment
Science
fromwww.theguardian.com
3 months ago

Carnivorous death ball' sponge among new species found in depths of Southern Ocean

Scientists discovered 30 previously unknown deep-sea species in the Southern Ocean, including a carnivorous ball sponge, new worms, sea stars, crustaceans and molluscs.
Environment
fromWIRED
4 months ago

Former Google CEO Will Fund Boat Drones to Explore Rough Antarctic Waters

A $45 million Schmidt Sciences initiative will deploy drone boats around Antarctica to gather data aimed at improving understanding of the Southern Ocean's carbon uptake.
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