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| Auteurs principaux: | , , , , , , , , |
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| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Environmental microbiology
2026
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| Sujets: | |
| Accès en ligne: | https://pubmed.ncbi.nlm.nih.gov/41712959/ |
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| _version_ | 1868266082237677569 |
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| author | Seidel, Laura Li, Songjun Hanna-Elias, Shahinez Rula, Iryna Ahlberg, Louise Forsman, Anders Hylander, Samuel Ketzer, Marcelo Dopson, Mark |
| author_facet | Seidel, Laura Li, Songjun Hanna-Elias, Shahinez Rula, Iryna Ahlberg, Louise Forsman, Anders Hylander, Samuel Ketzer, Marcelo Dopson, Mark Seidel, Laura Li, Songjun Hanna-Elias, Shahinez Rula, Iryna Ahlberg, Louise Forsman, Anders Hylander, Samuel Ketzer, Marcelo Dopson, Mark |
| collection | PubMed - marine biology |
| contents | Warming Causes a Decline in Baltic Sea Coastal Sediment Microbial Abundance. Seidel, Laura Li, Songjun Hanna-Elias, Shahinez Rula, Iryna Ahlberg, Louise Forsman, Anders Hylander, Samuel Ketzer, Marcelo Dopson, Mark Geologic Sediments RNA, Ribosomal, 16S Bacteria Climate Change Seawater Bays Oceans and Seas Long-term ocean warming impacts the marine environment, and these effects will be exacerbated by future climate change affecting, e.g., biogeochemical processes and microbial communities. However, how the sediment microbial cell abundance and live/dead ratio respond to warming is poorly understood. In this study, sediment core samples were collected from a Baltic Sea bay artificially heated on average 5°C for > 50 years above a nearby (control) bay unaffected by the heating. Contrary to the expected increased productivity in the heated bay, qPCR-based sediment cell abundances showed decreased cell numbers along the sediment depth gradient in the heated bay compared to the control bay. This could reflect that a portion of the cells' metabolic energy was diverted to a heat related stress response rather than being used for replication. In addition, live/dead cell ratios showed no clear differences in either bay suggesting the majority of the cells were alive. Finally, sediment depth gradient 16S rRNA gene sequencing confirmed previous studies, showing that prolonged warming shallows sediment biogeochemical zones and related microbial communities. In conclusion, future climate change related warming will likely decrease microbial cell abundances that form part of the food web base, potentially impacting the entire ecosystem. |
| format | Artículo científico |
| id | pubmed_41712959 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Environmental microbiology |
| record_format | pubmed |
| spellingShingle | Warming Causes a Decline in Baltic Sea Coastal Sediment Microbial Abundance. Seidel, Laura Li, Songjun Hanna-Elias, Shahinez Rula, Iryna Ahlberg, Louise Forsman, Anders Hylander, Samuel Ketzer, Marcelo Dopson, Mark Geologic Sediments RNA, Ribosomal, 16S Bacteria Climate Change Seawater Bays Oceans and Seas Warming Causes a Decline in Baltic Sea Coastal Sediment Microbial Abundance. Seidel, Laura Li, Songjun Hanna-Elias, Shahinez Rula, Iryna Ahlberg, Louise Forsman, Anders Hylander, Samuel Ketzer, Marcelo Dopson, Mark Geologic Sediments RNA, Ribosomal, 16S Bacteria Climate Change Seawater Bays Oceans and Seas Long-term ocean warming impacts the marine environment, and these effects will be exacerbated by future climate change affecting, e.g., biogeochemical processes and microbial communities. However, how the sediment microbial cell abundance and live/dead ratio respond to warming is poorly understood. In this study, sediment core samples were collected from a Baltic Sea bay artificially heated on average 5°C for > 50 years above a nearby (control) bay unaffected by the heating. Contrary to the expected increased productivity in the heated bay, qPCR-based sediment cell abundances showed decreased cell numbers along the sediment depth gradient in the heated bay compared to the control bay. This could reflect that a portion of the cells' metabolic energy was diverted to a heat related stress response rather than being used for replication. In addition, live/dead cell ratios showed no clear differences in either bay suggesting the majority of the cells were alive. Finally, sediment depth gradient 16S rRNA gene sequencing confirmed previous studies, showing that prolonged warming shallows sediment biogeochemical zones and related microbial communities. In conclusion, future climate change related warming will likely decrease microbial cell abundances that form part of the food web base, potentially impacting the entire ecosystem. |
| title | Warming Causes a Decline in Baltic Sea Coastal Sediment Microbial Abundance. |
| topic | Geologic Sediments RNA, Ribosomal, 16S Bacteria Climate Change Seawater Bays Oceans and Seas |
| url | https://pubmed.ncbi.nlm.nih.gov/41712959/ |