Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments
Hydrothermal sediments are those in which hydrothermal fluid is discharged through sediments and are one of the least studied deep-sea ecosystems. We present a combination of microbial and biochemical data to assess trophodynamics between and within hydrothermal and background areas of the Bransfiel...
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Online Access: | https://doi.org/10.5194/bg-14-5705-2017 https://doaj.org/article/3fe784a9b1bf4f04b49cded8582683c1 |
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ftdoajarticles:oai:doaj.org/article:3fe784a9b1bf4f04b49cded8582683c1 2023-05-15T13:46:12+02:00 Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments J. B. Bell W. D. K. Reid D. A. Pearce A. G. Glover C. J. Sweeting J. Newton C. Woulds 2017-12-01T00:00:00Z https://doi.org/10.5194/bg-14-5705-2017 https://doaj.org/article/3fe784a9b1bf4f04b49cded8582683c1 EN eng Copernicus Publications https://www.biogeosciences.net/14/5705/2017/bg-14-5705-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-5705-2017 1726-4170 1726-4189 https://doaj.org/article/3fe784a9b1bf4f04b49cded8582683c1 Biogeosciences, Vol 14, Pp 5705-5725 (2017) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/bg-14-5705-2017 2023-01-08T01:35:54Z Hydrothermal sediments are those in which hydrothermal fluid is discharged through sediments and are one of the least studied deep-sea ecosystems. We present a combination of microbial and biochemical data to assess trophodynamics between and within hydrothermal and background areas of the Bransfield Strait (1050–1647 m of depth). Microbial composition, biomass, and fatty acid signatures varied widely between and within hydrothermally active and background sites, providing evidence of diverse metabolic activity. Several species had different feeding strategies and trophic positions between hydrothermally active and inactive areas, and the stable isotope values of consumers were not consistent with feeding morphology. Niche area and the diversity of microbial fatty acids was lowest at the most hydrothermally active site, reflecting trends in species diversity. Faunal uptake of chemosynthetically produced organics was relatively limited but was detected at both hydrothermal and non-hydrothermal sites, potentially suggesting that hydrothermal activity can affect trophodynamics over a much wider area than previously thought. Article in Journal/Newspaper Antarc* Antarctic Bransfield Strait Directory of Open Access Journals: DOAJ Articles Antarctic Bransfield Strait Biogeosciences 14 24 5705 5725 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 J. B. Bell W. D. K. Reid D. A. Pearce A. G. Glover C. J. Sweeting J. Newton C. Woulds Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Hydrothermal sediments are those in which hydrothermal fluid is discharged through sediments and are one of the least studied deep-sea ecosystems. We present a combination of microbial and biochemical data to assess trophodynamics between and within hydrothermal and background areas of the Bransfield Strait (1050–1647 m of depth). Microbial composition, biomass, and fatty acid signatures varied widely between and within hydrothermally active and background sites, providing evidence of diverse metabolic activity. Several species had different feeding strategies and trophic positions between hydrothermally active and inactive areas, and the stable isotope values of consumers were not consistent with feeding morphology. Niche area and the diversity of microbial fatty acids was lowest at the most hydrothermally active site, reflecting trends in species diversity. Faunal uptake of chemosynthetically produced organics was relatively limited but was detected at both hydrothermal and non-hydrothermal sites, potentially suggesting that hydrothermal activity can affect trophodynamics over a much wider area than previously thought. |
format |
Article in Journal/Newspaper |
author |
J. B. Bell W. D. K. Reid D. A. Pearce A. G. Glover C. J. Sweeting J. Newton C. Woulds |
author_facet |
J. B. Bell W. D. K. Reid D. A. Pearce A. G. Glover C. J. Sweeting J. Newton C. Woulds |
author_sort |
J. B. Bell |
title |
Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments |
title_short |
Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments |
title_full |
Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments |
title_fullStr |
Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments |
title_full_unstemmed |
Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments |
title_sort |
hydrothermal activity lowers trophic diversity in antarctic hydrothermal sediments |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/bg-14-5705-2017 https://doaj.org/article/3fe784a9b1bf4f04b49cded8582683c1 |
geographic |
Antarctic Bransfield Strait |
geographic_facet |
Antarctic Bransfield Strait |
genre |
Antarc* Antarctic Bransfield Strait |
genre_facet |
Antarc* Antarctic Bransfield Strait |
op_source |
Biogeosciences, Vol 14, Pp 5705-5725 (2017) |
op_relation |
https://www.biogeosciences.net/14/5705/2017/bg-14-5705-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-5705-2017 1726-4170 1726-4189 https://doaj.org/article/3fe784a9b1bf4f04b49cded8582683c1 |
op_doi |
https://doi.org/10.5194/bg-14-5705-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
24 |
container_start_page |
5705 |
op_container_end_page |
5725 |
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1766238221025411072 |