Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls
Sinking of large organic food falls i.e. kelp, wood and whale carcasses to the oligotrophic deep-sea floor promotes the establishment of locally highly productive and diverse ecosystems, often with specifically adapted benthic communities. However, the fragmented spatial distribution and small area...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5006529 2023-05-15T17:47:07+02:00 Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls Pop Ristova, P. Bienhold, C. Wenzhöfer, F. Rossel Cartes, P. Boetius, A. Kiel, S. 2017 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006529 unknown info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0169906 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006529 Plos One info:eu-repo/semantics/article 2017 ftgfzpotsdam https://doi.org/10.1371/journal.pone.0169906 2022-09-14T05:57:46Z Sinking of large organic food falls i.e. kelp, wood and whale carcasses to the oligotrophic deep-sea floor promotes the establishment of locally highly productive and diverse ecosystems, often with specifically adapted benthic communities. However, the fragmented spatial distribution and small area poses challenges for the dispersal of their microbial and faunal communities. Our study focused on the temporal dynamics and spatial distributions of sunken wood bacterial communities, which were deployed in the vicinity of different cold seeps in the Eastern Mediterranean and the Norwegian deep-seas. By combining fingerprinting of bacterial communities by ARISA and 454 sequencing with in situ and ex situ biogeochemical measurements, we show that sunken wood logs have a locally confined long-term impact (> 3y) on the sediment geochemistry and community structure. We confirm previous hypotheses of different successional stages in wood degradation including a sulphophilic one, attracting chemosynthetic fauna from nearby seep systems. Wood experiments deployed at similar water depths (1100–1700 m), but in hydrographically different oceanic regions harbored different wood-boring bivalves, opportunistic faunal communities, and chemosynthetic species. Similarly, bacterial communities on sunken wood logs were more similar within one geographic region than between different seas. Diverse sulphate-reducing bacteria of the Deltaproteobacteria, the sulphide-oxidizing bacteria Sulfurovum as well as members of the Acidimicrobiia and Bacteroidia dominated the wood falls in the Eastern Mediterranean, while Alphaproteobacteria and Flavobacteriia colonized the Norwegian Sea wood logs. Fauna and bacterial wood-associated communities changed between 1 to 3 years of immersion, with sulphate-reducers and sulphide-oxidizers increasing in proportion, and putative cellulose degraders decreasing with time. Only 6% of all bacterial genera, comprising the core community, were found at any time on the Eastern Mediterranean sunken wooden logs. ... Article in Journal/Newspaper Norwegian Sea GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Norwegian Sea PLOS ONE 12 1 e0169906 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
description |
Sinking of large organic food falls i.e. kelp, wood and whale carcasses to the oligotrophic deep-sea floor promotes the establishment of locally highly productive and diverse ecosystems, often with specifically adapted benthic communities. However, the fragmented spatial distribution and small area poses challenges for the dispersal of their microbial and faunal communities. Our study focused on the temporal dynamics and spatial distributions of sunken wood bacterial communities, which were deployed in the vicinity of different cold seeps in the Eastern Mediterranean and the Norwegian deep-seas. By combining fingerprinting of bacterial communities by ARISA and 454 sequencing with in situ and ex situ biogeochemical measurements, we show that sunken wood logs have a locally confined long-term impact (> 3y) on the sediment geochemistry and community structure. We confirm previous hypotheses of different successional stages in wood degradation including a sulphophilic one, attracting chemosynthetic fauna from nearby seep systems. Wood experiments deployed at similar water depths (1100–1700 m), but in hydrographically different oceanic regions harbored different wood-boring bivalves, opportunistic faunal communities, and chemosynthetic species. Similarly, bacterial communities on sunken wood logs were more similar within one geographic region than between different seas. Diverse sulphate-reducing bacteria of the Deltaproteobacteria, the sulphide-oxidizing bacteria Sulfurovum as well as members of the Acidimicrobiia and Bacteroidia dominated the wood falls in the Eastern Mediterranean, while Alphaproteobacteria and Flavobacteriia colonized the Norwegian Sea wood logs. Fauna and bacterial wood-associated communities changed between 1 to 3 years of immersion, with sulphate-reducers and sulphide-oxidizers increasing in proportion, and putative cellulose degraders decreasing with time. Only 6% of all bacterial genera, comprising the core community, were found at any time on the Eastern Mediterranean sunken wooden logs. ... |
author2 |
Kiel, S. |
format |
Article in Journal/Newspaper |
author |
Pop Ristova, P. Bienhold, C. Wenzhöfer, F. Rossel Cartes, P. Boetius, A. |
spellingShingle |
Pop Ristova, P. Bienhold, C. Wenzhöfer, F. Rossel Cartes, P. Boetius, A. Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls |
author_facet |
Pop Ristova, P. Bienhold, C. Wenzhöfer, F. Rossel Cartes, P. Boetius, A. |
author_sort |
Pop Ristova, P. |
title |
Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls |
title_short |
Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls |
title_full |
Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls |
title_fullStr |
Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls |
title_full_unstemmed |
Temporal and Spatial Variations of Bacterial and Faunal Communities Associated with Deep-Sea Wood Falls |
title_sort |
temporal and spatial variations of bacterial and faunal communities associated with deep-sea wood falls |
publishDate |
2017 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006529 |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
Plos One |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0169906 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006529 |
op_doi |
https://doi.org/10.1371/journal.pone.0169906 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
1 |
container_start_page |
e0169906 |
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1766151453026549760 |