Articles | Volume 14, issue 24
https://doi.org/10.5194/bg-14-5705-2017
https://doi.org/10.5194/bg-14-5705-2017
Research article
 | 
20 Dec 2017
Research article |  | 20 Dec 2017

Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments

James B. Bell, William D. K. Reid, David A. Pearce, Adrian G. Glover, Christopher J. Sweeting, Jason Newton, and Clare Woulds

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Short summary
Sedimented hydrothermal vents are among the least studied deep-sea ecosystems. We compared food webs between hydrothermally active and off-vent areas of the Bransfield Strait, Antarctica. Invertebrates showed diverse feeding strategies and occupied different positions in food webs between vent and non-vent sites. Feeding and microbial diversity was lowest at vent sites. Chemosynthetic organic matter was a minimal food source at both vents and non-vents.
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