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Wood on the seafloor -- an oasis for deep-sea life
Date:1/22/2013

e habitat for other followers," Bienhold said. But they also need assistance from bacteria, namely to make use of the cellulose from the wood, which is difficult to digest."

The team of researchers observed that the wood-boring bivalves had cut large parts of the wood into smaller chips, which were further degraded by many other organisms. This activity led to the consumption of oxygen, enabling the production of hydrogen sulfide by sulfate-reducing microorganisms. And indeed, the researchers also found a mussel, which is typically only found at cold seeps or similar environments where it uses sulfur compounds as an energy source. "It is amazing to see how deep-sea bacteria can transform foreign substances such as wood to provide energy for cold-seep mussels on their journey through the deep ocean", said Antje Boetius, chief scientist of the expedition. Furthermore, the researchers discovered unknown species of deep-sea worms, which have been described by taxonomic experts in Germany and the USA. Thus, sunken woods do not only promote the dispersal of rare deep-sea animals, but also form hotspots of biodiversity at the deep seafloor.


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Contact: Dr. Christina Bienhold
cbienhol@mpi-bremen.de
49-421-202-8869
Max-Planck-Gesellschaft
Source:Eurekalert  

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