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The heat is on

An international team of scientists analyzed 3 million species records from 200 ecological communities worldwide to reveal the impact of ocean warming on fish communities. The study found that subtle changes in species movement in response to rising temperatures made a significant impact on the global picture.

SourceUniversity of California - Santa Barbara·JournalNature Climate Change·DateNov 25, 2019

Tropical sea snake uses its head to 'breathe'

Scientists have found that the blue-banded sea snake uses a vascular network in its head to absorb oxygen from the surrounding water, allowing it to stay submerged for longer periods. This unique adaptation enables the snake to thrive in tropical waters with minimal surface exposure.

SourceFlinders University·JournalRoyal Society Open Science·DateSep 3, 2019

Southern Ocean circulation patterns that keep the lid on stored carbon are more complex than previously thought

Research reveals that horizontal and vertical circulation of carbon-rich ocean water in the subpolar Southern Ocean work together to control carbon storage and release. The study found that large gyres, such as the Weddell Gyre, play a key role in transporting carbon-containing phytoplankton out of the region.

Switching on the Atlantic heat pump

Researchers found that a dramatic increase in North Atlantic salinity caused the Arctic-Atlantic gateway to close, preventing ocean-sinking and kickstarting the modern circulation. The study suggests that changes in the Atlantic conveyor belt could dramatically alter Europe's climate in a future warm world.

SourceStockholm University·JournalNature Communications·DateAug 22, 2019

Blue sharks use eddies for fast track to food

Researchers tracked blue sharks using satellite tags and found they spent most of their days diving into warm-water eddies to forage for small fish and squid. The study suggests blue sharks prefer warm-water eddies due to their inability to regulate body temperature, shedding light on their unique feeding behavior

SourceWoods Hole Oceanographic Institution·JournalProceedings of the National Academy of Sciences·DateAug 7, 2019

Electricity-driven undersea reactions may have been important for the emergence of life

Researchers at Tokyo Institute of Technology have found that electricity-driven reactions in deep-sea hydrothermal environments can reduce metal sulfides to native metals, promoting the reduction of organic compounds and potentially facilitating prebiotic chemistry. This discovery has implications for understanding the universality and...

SourceTokyo Institute of Technology·JournalScience Advances·DateJul 25, 2019

Water solutions without a grain of salt

A solar steam generation system has been developed to produce clean water from salty ocean water with almost 100 per cent salt removal, providing a solution to water shortages in regional areas. The technology uses photothermal materials and the power of the sun, achieving efficient and continuous clean water production.

SourceMonash University·JournalEnergy & Environmental Science·DateJul 23, 2019

Artificial snowfall could save the West Antarctic ice sheet, but with high costs and risks

A new study suggests that artificially pumping ocean water onto coastal regions surrounding the West Antarctic ice sheet could stabilize it, but at great cost. The approach would require a minimum of 7,400 gigatons of artificial snowfall over 10 years to achieve a two-to-five-centimeter sea level drop.

Instability in Antarctic ice projected to make sea level rise rapidly

A study by Georgia Institute of Technology researchers suggests that instability within Antarctic ice will accelerate its flow into the ocean and push sea levels up at a more rapid pace than previously expected. This 'instability' makes forecasting more uncertain, particularly relevant to engineering against flood dangers.

SourceGeorgia Institute of Technology·JournalProceedings of the National Academy of Sciences·DateJul 8, 2019

The complex fate of Antarctic species in the face of a changing climate

Scientists warn that Antarctic species are at risk due to declining oxygen levels in the ocean, which could lead to extinction for larger marine invertebrates and fish. The study found that some species have evolved mechanisms to compensate for reduced oxygen, but many large species will likely be impacted by climate change.

SourceUniversity of Plymouth·JournalPhilosophical Transactions of the Royal Society of London (B )·DateJun 16, 2019

Microorganisms on microplastics

Researchers found that eukaryotic microorganisms, such as dinoflagellates like Pfiesteria piscicida, thrive on microplastic particles, reaching densities 50 times higher than in surrounding water. This discovery highlights the potential for microplastics to transport microorganisms over long distances.

SourceForschungsverbund Berlin·JournalFrontiers in Microbiology·DateJun 5, 2019

Mapping groundwater's influence on the world's oceans

Researchers at Ohio State University have created a near-global map of fresh submarine groundwater discharge, showing that nearly half of groundwater flows into tropical regions. The study also found that areas with active fault lines send more groundwater to the ocean than stable regions, and dry arid regions have limited discharge.

SourceOhio State University·JournalGeophysical Research Letters·DateJun 3, 2019