Diatom algae populations tell a story about climate change in Greenland
Researchers from the University of Maine are studying diatoms in the lake waters of southwestern Greenland to determine how climate change is affecting the Arctic ecosystem. Diatoms leave a fossil in lake sediments so by taking sediment core samples, researchers can tell how diatom populations have changed over time. Samples reveal that over the last 150 years, diatom communities have changed drastically and species associated with warmer waters are increasing at unprecedented rates. Watch the following video to learn more:
Nova Southeastern University Researchers Uncover Genetic Surprises in Florida’s Bottlenose Dolphins
Bottlenose dolphins might all look alike, but a new study found that they have some surprising genetic differences. The study focused on bottlenose dolphins that live within the Indian River Lagoon (IRL) on Florida’s east coast and compared that group to other bottlenose dolphins that live offshore, in the northwest Atlantic Ocean, Gulf of Mexico and the Caribbean. Researchers established a genetic baseline for the IRL population that can be used in future genetic studies. They found that there are two distinct populations of bottlenose dolphins living the IRL area, one north and one south, which is important information for effective management of the IRL dolphins.
Scientists Study Some Fishy Behavior to Solve an Animal Locomotion Mystery
To an engineer, the side-to-side movement of a fish seems like a huge waste of energy. Why move in a direction that doesn’t point towards your destination? New research reveals that these extra movements aren’t wasteful at all. A team of engineers came to this conclusion by studying the movements of knifefish and how they use their fins to hover inside little holes. They used a robot to mimic the fish’s fin movements and found that it improved both stability and maneuverability. These findings could be used to improve the agility of other machines.
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