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  Coral mucus functions as an energy carrier and particle trap in the reef ecosystem

Wild, C., Huettel, M., Klueter, A., Kremb, S. G., Rasheed, M. Y. M., & Jørgensen, B. B. (2004). Coral mucus functions as an energy carrier and particle trap in the reef ecosystem. Nature, 428(6978), 66-70.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-D169-D Version Permalink: http://hdl.handle.net/21.11116/0000-0007-9223-C
Genre: Journal Article

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 Creators:
Wild, C.1, Author              
Huettel, M.2, Author              
Klueter, A., Author
Kremb, S. G., Author
Rasheed, M. Y. M.2, Author              
Jørgensen, B. B.3, Author              
Affiliations:
1HGF MPG Joint Research Group for Deep Sea Ecology & Technology, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481702              
2Flux Group, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481701              
3Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481693              

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 Abstract: Zooxanthellae, endosymbiotic algae of reef-building corals, substantially contribute to the high gross primary production of coral reefs1, but corals exude up to half of the carbon assimilated by their zooxanthellae as mucus2,3. Here we show that released coral mucus efficiently traps organic matter from the water column and rapidly carries energy and nutrients to the reef lagoon sediment, which acts as a biocatalytic mineralizing filter. In the Great Barrier Reef, the dominant genus of hard corals, Acropora, exudes up to 4.8 litres of mucus per square metre of reef area per day. Between 56% and 80% of this mucus dissolves in the reef water, which is filtered through the lagoon sands. Here, coral mucus is degraded at a turnover rate of at least 7% per hour. Detached undissolved mucus traps suspended particles, increasing its initial organic carbon and nitrogen content by three orders of magnitude within 2 h. Tidal currents concentrate these mucus aggregates into the lagoon, where they rapidly settle. Coral mucus provides light energy harvested by the zooxanthellae and trapped particles to the heterotrophic reef community, thereby establishing a recycling loop that supports benthic life, while reducing loss of energy and nutrients from the reef ecosystem.

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Language(s): eng - English
 Dates: 2004-03-04
 Publication Status: Published in print
 Pages: 5
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 222347
ISI: 000189363800035
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Title: Nature
  Abbreviation : Nature
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 428 (6978) Sequence Number: - Start / End Page: 66 - 70 Identifier: ISSN: 0028-0836
CoNE: https://pure.mpg.de/cone/journals/resource/954925427238