Replication data for: Cold Seeps and Coral Reefs in Northern Norway: carbon cycling in marine ecosystems with coexisting features

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Sert, Muhammed Fatih; Bernstein, Hans C.; Kekäläinen, Timo; Ferré, Bénédicte, 2025, "Replication data for: Cold Seeps and Coral Reefs in Northern Norway: carbon cycling in marine ecosystems with coexisting features", https://doi.org/10.18710/KFYVIA, DataverseNO, V1

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Description	This dataset contains water column measurements, dissolved organic matter compositions, hydrographical profiles and 16S rRNA data collected from the Lofoten-Vesteralen seep site at Northern Norway. Data are presented along with the R codes for the replication of analyses, and figures that were added in our submitted paper. We recommend using R (v4.3.1) and R Studio (2023.06.1) which can access all codes and data. Running codes in the given order will create corresponding data tables and all the figures that were used in the article. (2024-09-15) Cold seeps and cold-water corals (CWCs) coexist on Northern Norway’s continental shelf at the Hola trough between Lofoten and Vesterålen. Here, cold seeps release methane from the seabed, yet none reaches the sea-surafce. Instead, the methane dissolves and disperses in the ocean where it is ultimately consumed by methane-oxidizing microorganisms. These microorganisms metabolize methane and release carbon dioxide and dissolved organic matter (DOM), which impact the biogeochemical habitat of CWCs in close vicinity of cold seeps. We investigated the biogeochemistry of carbon, carbon isotopes, nutrients, dissolved organic matter compositions, and microbial diversity in the water column. Our results indicated that dissolved inorganic carbon concentrations were 29% higher near cold seeps with modified carbon's isotopic compositions. The hydrophysical parameters and surface-to-bottom control of sinking particles mainly govern water column productivity and nutrient cycle. DOM compositions implied that the seep-associated microbiomes modify DOM's chemical diversity and isotopic composition at CWCs and the entire water column near cold seeps. We suggest cold seeps and CWCs coexist in Northern Norway's continental shelves; however, enhanced water temperatures and consequent increase in methane release at cold seeps may mitigate the ecological role and functioning of CWC reefs in the future. (2024-09-15)
Subject	Earth and Environmental Sciences
Keyword	Dissolved organic matter, methane, cold seeps, cold water corals
Related Publication	Muhammed Fatih Sert, Hans C. Bernstein, Knut Ola Dølven, Sebastian Petters, Timo Kekäläinen, Janne Jänis, Jorge Corrales-Guerrero and Bénédicte Ferré. Cold Seeps and Coral Reefs in Northern Norway: Carbon Cycling between Coexisting Features in Marine Ecosystems "Submitted for review".
License/Data Use Agreement	CC0 1.0

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Citation Metadata

Persistent Identifier	doi:10.18710/KFYVIA
Publication Date	2025-01-20
Title	Replication data for: Cold Seeps and Coral Reefs in Northern Norway: carbon cycling in marine ecosystems with coexisting features
Author	Sert, Muhammed Fatih (UiT The Arctic University of Norway) - ORCID: 0000-0002-2442-0929 Bernstein, Hans C. (UiT The Arctic University of Norway) - ORCID: 0000-0003-2913-7708 Kekäläinen, Timo (Department of Chemistry, University of Eastern Finland) Ferré, Bénédicte (UiT The Arctic University of Norway) - ORCID: 0000-0003-1646-9287
Point of Contact	Use email button above to contact. Sert, Muhammed Fatih (UiT The Arctic University of Norway)
Description	This dataset contains water column measurements, dissolved organic matter compositions, hydrographical profiles and 16S rRNA data collected from the Lofoten-Vesteralen seep site at Northern Norway. Data are presented along with the R codes for the replication of analyses, and figures that were added in our submitted paper. We recommend using R (v4.3.1) and R Studio (2023.06.1) which can access all codes and data. Running codes in the given order will create corresponding data tables and all the figures that were used in the article. (2024-09-15) Cold seeps and cold-water corals (CWCs) coexist on Northern Norway’s continental shelf at the Hola trough between Lofoten and Vesterålen. Here, cold seeps release methane from the seabed, yet none reaches the sea-surafce. Instead, the methane dissolves and disperses in the ocean where it is ultimately consumed by methane-oxidizing microorganisms. These microorganisms metabolize methane and release carbon dioxide and dissolved organic matter (DOM), which impact the biogeochemical habitat of CWCs in close vicinity of cold seeps. We investigated the biogeochemistry of carbon, carbon isotopes, nutrients, dissolved organic matter compositions, and microbial diversity in the water column. Our results indicated that dissolved inorganic carbon concentrations were 29% higher near cold seeps with modified carbon's isotopic compositions. The hydrophysical parameters and surface-to-bottom control of sinking particles mainly govern water column productivity and nutrient cycle. DOM compositions implied that the seep-associated microbiomes modify DOM's chemical diversity and isotopic composition at CWCs and the entire water column near cold seeps. We suggest cold seeps and CWCs coexist in Northern Norway's continental shelves; however, enhanced water temperatures and consequent increase in methane release at cold seeps may mitigate the ecological role and functioning of CWC reefs in the future. (2024-09-15)
Subject	Earth and Environmental Sciences
Keyword	Dissolved organic matter (DOM) methane cold seeps cold water corals
Related Publication	Muhammed Fatih Sert, Hans C. Bernstein, Knut Ola Dølven, Sebastian Petters, Timo Kekäläinen, Janne Jänis, Jorge Corrales-Guerrero and Bénédicte Ferré. Cold Seeps and Coral Reefs in Northern Norway: Carbon Cycling between Coexisting Features in Marine Ecosystems "Submitted for review".
Language	English
Producer	UiT The Arctic University of Norway (UiT) https://en.uit.no/
Contributor	Hosting Institution : Department of Geosciences, UiT The Arctic University of Norway Hosting Institution : Department of Chemistry, University of Eastern Finland Hosting Institution : Faculty of Biosciences, Fisheries, and Economics, UiT-The Arctic University of Norway Project Leader : Jänis, Janne Data Collector : Petters, Sebastian Data Collector : Dills, Michael Stefan
Funding Information	The Research Council of Norway: 320100 The Research Council of Norway: 223259 European Commission: 731077
Distributor	UiT The Arctic University of Norway (UiT) https://dataverse.no/dataverse/uit
Depositor	Sert, Muhammed Fatih
Deposit Date	2024-09-15
Time Period	Start Date: 2022-06-08 ; End Date: 2022-06-16
Date of Collection	Start Date: 2022-06-08 ; End Date: 2022-06-16
Data Type	Observational data
Software	R, Version: 4.4.1 QGIS, Version: 3.38.2
Other Reference	Ferré, B., Barreyre, T., Bünz, S., Argentino, C., Corrales-Guerrero, J., Dølven, K. O., Stetzler, M., Fallati, L., Sert, M. F., Panieri, G., Rastrick, S., Kutti, T., & Moser, M. (2024). Contrasting Methane Seepage Dynamics in the Hola Trough Offshore Norway: Insights From Two Different Summers. Journal of Geophysical Research: Oceans, 129(6), e2024JC020949. https://doi.org/10.1029/2024JC020949; Ferré, B., Panieri, G., Argentino, C., Sert, M. F., Stetzler, M., Fallati, L., Dills, M. S., Petters, S., Rohan, T., Barreyre, T., Lien, M. E., Kutti, T., Corrales, J., Kjær, M., Ting, R., Bojesen, M. D., Walta, A., & Jensen, S. (2022). CAGE22-3 Cruise Report: EMAN7 cruise. https://septentrio.uit.no/index.php/cage/article/view/6760

Geospatial Metadata

Geographic Coverage	Norway, Nordland, Lofoten-Vesterålen
Geographic Unit	Hola trough
Geographic Bounding Box	14.22364628 14.40586557 68.94306462 68.90823672

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