Antarctica's Blood Falls Reveals Ancient Marine Microbes in New Study
A study published in Nature Geoscience on August 3 uncovered a complex microbial community thriving in the reddish ice, mud, and sediments of Blood Falls in East Antarctica's McMurdo Dry Valleys. This unique site releases iron-rich saltwater that oxidizes, creating its rusty look, which can even be seen from space. Researchers analyzed 167 samples and found that marine eukaryotes like diatoms, dinoflagellates, haptophytes, and ciliates make up the majority, with more than 60% of diatoms coming from the ocean. Andrew Allen from Scripps Institution of Oceanography called the results 'extraordinary,' emphasizing the microbes' ability to adapt. Brent C. Christner from the University of Florida praised the study for showcasing microbial evolution in harsh environments.
Key facts
- Study published on August 3 in Nature Geoscience
- Blood Falls is located in East Antarctica's McMurdo Dry Valleys
- Researchers found marine-associated eukaryotes in Blood Falls samples
- Over 60% of diatoms in red mud had ancestral ties to ocean life
- The study supports the theory of an ancient marine water source
- Andrew Allen is a co-author and marine biologist at Scripps Institution of Oceanography
- Brent C. Christner from University of Florida commented on the study
- The research could help estimate when the brine became isolated
Entities
Institutions
- Nature Geoscience
- Scripps Institution of Oceanography
- University of California, San Diego
- University of Florida
- Smithsonian magazine
- Popular Science
- Scientific American
- Gizmodo
Locations
- Antarctica
- East Antarctica
- McMurdo Dry Valleys
- Taylor Glacier
- Lake Bonney