ScienceShot: Could You Repeat That Click?
A new study reveals that some dolphins lose their hearing as they grow older. Researchers tested the hearing of a 40-year-old male Indo-Pacific humpback dolphin that had stranded in a river near Foshan, China. They compared the data they collected to similar data collected from a 13-year-old male humpback dolphin that had stranded in 2011. Compared to the younger dolphin, the 40-year-old had trouble hearing high-frequency sounds and made echolocation clicks in a lower frequency.
Nations Fail to Agree on Antarctic Marine Reserve
For the third time, the nations that make up the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) failed to agree on a plan to create the world’s largest marine sanctuary in Antarctica. The proposed area was already scaled back and many hoped that would be enough to get Russia and Ukraine to agree. However, time ran out on Friday when they failed to reach a required consensus. The 24 nations and the European Union that make up CCAMLR will meet again next October.
Marine Plants Provide Defense Against Climate Change
A new study reveals that seagrass, mangroves and salt-marsh ecosystems are able to develop strategies for climate change adaptation and mitigation. These marine plant ecosystems act as intense carbon sinks, collecting and storing large amounts of carbon from the atmosphere. The spread of seagrass beds, mangroves and marshes has declined by 25 to 50 percent in the last 50 years and this research highlights the importance of these marine plant ecosystems in dealing with climate change.
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