Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria
Fish farming in sea cages is a growing component of the global food industry. A prominent ecosystem impact of this industry is the increase in the downward flux of organic matter, which stimulates anaerobic mineralization and sulfide production in underlying sediments. When free sulfide is released...
Published in: | Frontiers in Microbiology |
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2022
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Online Access: | http://resolver.tudelft.nl/uuid:07cbc516-20c4-47a8-ad95-b1cda904b158 https://doi.org/10.3389/fmicb.2022.1034401 |
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fttudelft:oai:tudelft.nl:uuid:07cbc516-20c4-47a8-ad95-b1cda904b158 2024-04-28T08:26:11+00:00 Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria Vasquez Cardenas, D. (author) Hidalgo-Martinez, Silvia (author) Hulst, Lucas (author) Thorleifsdottir, Thorgerdur (author) Helgason, Gudmundur Vidir (author) Eiriksson, Thorleifur (author) Geelhoed, Jeanine S. (author) Agustsson, Thorleifur (author) Meysman, F.J.R. (author) 2022 http://resolver.tudelft.nl/uuid:07cbc516-20c4-47a8-ad95-b1cda904b158 https://doi.org/10.3389/fmicb.2022.1034401 en eng http://www.scopus.com/inward/record.url?scp=85145694815&partnerID=8YFLogxK Frontiers in Microbiology--1664-302X--47fe0014-88c2-44ed-82dd-f1b5511903f1 http://resolver.tudelft.nl/uuid:07cbc516-20c4-47a8-ad95-b1cda904b158 https://doi.org/10.3389/fmicb.2022.1034401 © 2022 D. Vasquez Cardenas, Silvia Hidalgo-Martinez, Lucas Hulst, Thorgerdur Thorleifsdottir, Gudmundur Vidir Helgason, Thorleifur Eiriksson, Jeanine S. Geelhoed, Thorleifur Agustsson, F.J.R. Meysman aquaculture cable bacteria electrogenic sulfide oxidation (e-SOx) long-distance electron transport (LDET) sulfur cycling journal article 2022 fttudelft https://doi.org/10.3389/fmicb.2022.1034401 2024-04-10T00:12:34Z Fish farming in sea cages is a growing component of the global food industry. A prominent ecosystem impact of this industry is the increase in the downward flux of organic matter, which stimulates anaerobic mineralization and sulfide production in underlying sediments. When free sulfide is released to the overlying water, this can have a toxic effect on local marine ecosystems. The microbially-mediated process of sulfide oxidation has the potential to be an important natural mitigation and prevention strategy that has not been studied in fish farm sediments. We examined the microbial community composition (DNA-based 16S rRNA gene) underneath two active fish farms on the Southwestern coast of Iceland and performed laboratory incubations of resident sediment. Field observations confirmed the strong geochemical impact of fish farming on the sediment (up to 150 m away from cages). Sulfide accumulation was evidenced under the cages congruent with a higher supply of degradable organic matter from the cages. Phylogenetically diverse microbes capable of sulfide detoxification were present in the field sediment as well as in lab incubations, including cable bacteria (Candidatus Electrothrix), which display a unique metabolism based on long-distance electron transport. Microsensor profiling revealed that the activity of cable bacteria did not exert a dominant impact on the geochemistry of fish farm sediment at the time of sampling. However, laboratory incubations that mimic the recovery process during fallowing, revealed successful enrichment of cable bacteria within weeks, with concomitant high sulfur-oxidizing activity. Overall our results give insight into the role of microbially-mediated sulfide detoxification in aquaculture impacted sediments. BT/Environmental Biotechnology Article in Journal/Newspaper Iceland Delft University of Technology: Institutional Repository Frontiers in Microbiology 13 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
aquaculture cable bacteria electrogenic sulfide oxidation (e-SOx) long-distance electron transport (LDET) sulfur cycling |
spellingShingle |
aquaculture cable bacteria electrogenic sulfide oxidation (e-SOx) long-distance electron transport (LDET) sulfur cycling Vasquez Cardenas, D. (author) Hidalgo-Martinez, Silvia (author) Hulst, Lucas (author) Thorleifsdottir, Thorgerdur (author) Helgason, Gudmundur Vidir (author) Eiriksson, Thorleifur (author) Geelhoed, Jeanine S. (author) Agustsson, Thorleifur (author) Meysman, F.J.R. (author) Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria |
topic_facet |
aquaculture cable bacteria electrogenic sulfide oxidation (e-SOx) long-distance electron transport (LDET) sulfur cycling |
description |
Fish farming in sea cages is a growing component of the global food industry. A prominent ecosystem impact of this industry is the increase in the downward flux of organic matter, which stimulates anaerobic mineralization and sulfide production in underlying sediments. When free sulfide is released to the overlying water, this can have a toxic effect on local marine ecosystems. The microbially-mediated process of sulfide oxidation has the potential to be an important natural mitigation and prevention strategy that has not been studied in fish farm sediments. We examined the microbial community composition (DNA-based 16S rRNA gene) underneath two active fish farms on the Southwestern coast of Iceland and performed laboratory incubations of resident sediment. Field observations confirmed the strong geochemical impact of fish farming on the sediment (up to 150 m away from cages). Sulfide accumulation was evidenced under the cages congruent with a higher supply of degradable organic matter from the cages. Phylogenetically diverse microbes capable of sulfide detoxification were present in the field sediment as well as in lab incubations, including cable bacteria (Candidatus Electrothrix), which display a unique metabolism based on long-distance electron transport. Microsensor profiling revealed that the activity of cable bacteria did not exert a dominant impact on the geochemistry of fish farm sediment at the time of sampling. However, laboratory incubations that mimic the recovery process during fallowing, revealed successful enrichment of cable bacteria within weeks, with concomitant high sulfur-oxidizing activity. Overall our results give insight into the role of microbially-mediated sulfide detoxification in aquaculture impacted sediments. BT/Environmental Biotechnology |
format |
Article in Journal/Newspaper |
author |
Vasquez Cardenas, D. (author) Hidalgo-Martinez, Silvia (author) Hulst, Lucas (author) Thorleifsdottir, Thorgerdur (author) Helgason, Gudmundur Vidir (author) Eiriksson, Thorleifur (author) Geelhoed, Jeanine S. (author) Agustsson, Thorleifur (author) Meysman, F.J.R. (author) |
author_facet |
Vasquez Cardenas, D. (author) Hidalgo-Martinez, Silvia (author) Hulst, Lucas (author) Thorleifsdottir, Thorgerdur (author) Helgason, Gudmundur Vidir (author) Eiriksson, Thorleifur (author) Geelhoed, Jeanine S. (author) Agustsson, Thorleifur (author) Meysman, F.J.R. (author) |
author_sort |
Vasquez Cardenas, D. (author) |
title |
Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria |
title_short |
Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria |
title_full |
Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria |
title_fullStr |
Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria |
title_full_unstemmed |
Biogeochemical impacts of fish farming on coastal sediments: Insights into the functional role of cable bacteria |
title_sort |
biogeochemical impacts of fish farming on coastal sediments: insights into the functional role of cable bacteria |
publishDate |
2022 |
url |
http://resolver.tudelft.nl/uuid:07cbc516-20c4-47a8-ad95-b1cda904b158 https://doi.org/10.3389/fmicb.2022.1034401 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://www.scopus.com/inward/record.url?scp=85145694815&partnerID=8YFLogxK Frontiers in Microbiology--1664-302X--47fe0014-88c2-44ed-82dd-f1b5511903f1 http://resolver.tudelft.nl/uuid:07cbc516-20c4-47a8-ad95-b1cda904b158 https://doi.org/10.3389/fmicb.2022.1034401 |
op_rights |
© 2022 D. Vasquez Cardenas, Silvia Hidalgo-Martinez, Lucas Hulst, Thorgerdur Thorleifsdottir, Gudmundur Vidir Helgason, Thorleifur Eiriksson, Jeanine S. Geelhoed, Thorleifur Agustsson, F.J.R. Meysman |
op_doi |
https://doi.org/10.3389/fmicb.2022.1034401 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
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1797585673082896384 |