{"entity": "researcher", "timestamp": "2026-08-14T13:18:13.488Z", "family": "Ketzer", "given": "Marcelo", "initials": "M", "orcid": "0000-0003-4796-8177", "affiliations": [], "links": {"self": {"href": "https://publications.scilifelab.se/researcher/5224e1bded3a4866802b863ed32cb10e.json"}, "display": {"href": "https://publications.scilifelab.se/researcher/5224e1bded3a4866802b863ed32cb10e"}}, "publications": [{"entity": "publication", "iuid": "3857360785ca4b5d9ed1b660982a2c92", "links": {"self": {"href": "https://publications.scilifelab.se/publication/3857360785ca4b5d9ed1b660982a2c92.json"}, "display": {"href": "https://publications.scilifelab.se/publication/3857360785ca4b5d9ed1b660982a2c92"}}, "title": "Warming Causes a Decline in Baltic Sea Coastal Sediment Microbial Abundance.", "authors": [{"family": "Seidel", "given": "Laura", "initials": "L", "orcid": "0000-0002-2620-914X", "researcher": {"href": "https://publications.scilifelab.se/researcher/d0923436cd0a42cea933771b57ae8c94.json"}}, {"family": "Li", "given": "Songjun", "initials": "S", "orcid": "0009-0008-4816-2451", "researcher": {"href": "https://publications.scilifelab.se/researcher/fa0c5a7e34da45c2aca6f8de83af14b5.json"}}, {"family": "Hanna-Elias", "given": "Shahinez", "initials": "S", "orcid": "0009-0007-7894-7287", "researcher": {"href": "https://publications.scilifelab.se/researcher/4a1167e7920f47e188b705992727a776.json"}}, {"family": "Rula", "given": "Iryna", "initials": "I"}, {"family": "Ahlberg", "given": "Louise", "initials": "L", "orcid": "0009-0006-8777-8588", "researcher": {"href": "https://publications.scilifelab.se/researcher/da605765d18c4f5b8bc62bc894b3c3ea.json"}}, {"family": "Forsman", "given": "Anders", "initials": "A", "orcid": "0000-0001-9598-7618", "researcher": {"href": "https://publications.scilifelab.se/researcher/0a605b671cd3414d9c75c2408b74d3de.json"}}, {"family": "Hylander", "given": "Samuel", "initials": "S", "orcid": "0000-0002-3740-5998", "researcher": {"href": "https://publications.scilifelab.se/researcher/47f71565ec50426e9d4893a5335e5fa3.json"}}, {"family": "Ketzer", "given": "Marcelo", "initials": "M", "orcid": "0000-0003-4796-8177", "researcher": {"href": "https://publications.scilifelab.se/researcher/5224e1bded3a4866802b863ed32cb10e.json"}}, {"family": "Dopson", "given": "Mark", "initials": "M", "orcid": "0000-0002-9622-3318", "researcher": {"href": "https://publications.scilifelab.se/researcher/1dc9cc6dadf6483e88d855dc78709a59.json"}}], "type": "journal article", "published": "2026-02-00", "journal": {"title": "Environ. Microbiol.", "issn": "1462-2920", "volume": "28", "issue": "2", "pages": "e70256", "issn-l": "1462-2912"}, "abstract": "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\u00b0C 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.", "doi": "10.1111/1462-2920.70256", "pmid": "41712959", "labels": {"National Genomics Infrastructure": "Service", "NGI Stockholm (Genomics Production)": "Service", "NGI Short read": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC12920023"}], "notes": [], "created": "2026-02-27T07:59:56.449Z", "modified": "2026-02-27T07:59:57.339Z"}, {"entity": "publication", "iuid": "89802b086c134753af299e2d595aeba0", "links": {"self": {"href": "https://publications.scilifelab.se/publication/89802b086c134753af299e2d595aeba0.json"}, "display": {"href": "https://publications.scilifelab.se/publication/89802b086c134753af299e2d595aeba0"}}, "title": "Climate change-related warming reduces thermal sensitivity and modifies metabolic activity of coastal benthic bacterial communities.", "authors": [{"family": "Seidel", "given": "Laura", "initials": "L", "orcid": "0000-0002-2620-914X", "researcher": {"href": "https://publications.scilifelab.se/researcher/d0923436cd0a42cea933771b57ae8c94.json"}}, {"family": "Broman", "given": "Elias", "initials": "E", "orcid": "0000-0001-9005-5168", "researcher": {"href": "https://publications.scilifelab.se/researcher/63826da04a1f4f80bc3229df12bac9b7.json"}}, {"family": "Nilsson", "given": "Emelie", "initials": "E", "orcid": "0000-0001-5103-214X", "researcher": {"href": "https://publications.scilifelab.se/researcher/996d4cbfd1f84e5b9f5847e47223c22d.json"}}, {"family": "St\u00e5hle", "given": "Magnus", "initials": "M"}, {"family": "Ketzer", "given": "Marcelo", "initials": "M", "orcid": "0000-0003-4796-8177", "researcher": {"href": "https://publications.scilifelab.se/researcher/5224e1bded3a4866802b863ed32cb10e.json"}}, {"family": "P\u00e9rez-Mart\u00ednez", "given": "Clara", "initials": "C", "orcid": "0000-0001-8302-5710", "researcher": {"href": "https://publications.scilifelab.se/researcher/28271fe98d59405b92dc026d1740dd9a.json"}}, {"family": "Turner", "given": "Stephanie", "initials": "S"}, {"family": "Hylander", "given": "Samuel", "initials": "S", "orcid": "0000-0002-3740-5998", "researcher": {"href": "https://publications.scilifelab.se/researcher/47f71565ec50426e9d4893a5335e5fa3.json"}}, {"family": "Pinhassi", "given": "Jarone", "initials": "J", "orcid": "0000-0002-6405-1347", "researcher": {"href": "https://publications.scilifelab.se/researcher/b352d814c2534b06a79992fda3bbb075.json"}}, {"family": "Forsman", "given": "Anders", "initials": "A", "orcid": "0000-0001-9598-7618", "researcher": {"href": "https://publications.scilifelab.se/researcher/0a605b671cd3414d9c75c2408b74d3de.json"}}, {"family": "Dopson", "given": "Mark", "initials": "M", "orcid": "0000-0002-9622-3318", "researcher": {"href": "https://publications.scilifelab.se/researcher/1dc9cc6dadf6483e88d855dc78709a59.json"}}], "type": "journal article", "published": "2023-06-00", "journal": {"title": "ISME J", "issn": "1751-7370", "volume": "17", "issue": "6", "pages": "855-869", "issn-l": "1751-7362"}, "abstract": "Besides long-term average temperature increases, climate change is projected to result in a higher frequency of marine heatwaves. Coastal zones are some of the most productive and vulnerable ecosystems, with many stretches already under anthropogenic pressure. Microorganisms in coastal areas are central to marine energy and nutrient cycling and therefore, it is important to understand how climate change will alter these ecosystems. Using a long-term heated bay (warmed for 50 years) in comparison with an unaffected adjacent control bay and an experimental short-term thermal (9 days at 6-35 \u00b0C) incubation experiment, this study provides new insights into how coastal benthic water and surface sediment bacterial communities respond to temperature change. Benthic bacterial communities in the two bays reacted differently to temperature increases with productivity in the heated bay having a broader thermal tolerance compared with that in the control bay. Furthermore, the transcriptional analysis showed that the heated bay benthic bacteria had higher transcript numbers related to energy metabolism and stress compared to the control bay, while short-term elevated temperatures in the control bay incubation experiment induced a transcript response resembling that observed in the heated bay field conditions. In contrast, a reciprocal response was not observed for the heated bay community RNA transcripts exposed to lower temperatures indicating a potential tipping point in community response may have been reached. In summary, long-term warming modulates the performance, productivity, and resilience of bacterial communities in response to warming.", "doi": "10.1038/s41396-023-01395-z", "pmid": "36977742", "labels": {"NGI Short read": "Service", "National Genomics Infrastructure": "Service", "NGI Stockholm (Genomics Production)": "Service", "Bioinformatics Support for Computational Resources": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC10202955"}, {"db": "pii", "key": "10.1038/s41396-023-01395-z"}], "notes": [], "created": "2023-10-04T12:16:42.203Z", "modified": "2024-01-16T13:48:33.316Z"}, {"entity": "publication", "iuid": "595bc0af097f4c82b88f2b3184d72f42", "links": {"self": {"href": "https://publications.scilifelab.se/publication/595bc0af097f4c82b88f2b3184d72f42.json"}, "display": {"href": "https://publications.scilifelab.se/publication/595bc0af097f4c82b88f2b3184d72f42"}}, "title": "Weakened resilience of benthic microbial communities in the face of climate change", "authors": [{"family": "Seidel", "given": "Laura", "initials": "L", "orcid": "0000-0002-2620-914X", "researcher": {"href": "https://publications.scilifelab.se/researcher/d0923436cd0a42cea933771b57ae8c94.json"}}, {"family": "Ketzer", "given": "Marcelo", "initials": "M", "orcid": "0000-0003-4796-8177", "researcher": {"href": "https://publications.scilifelab.se/researcher/5224e1bded3a4866802b863ed32cb10e.json"}}, {"family": "Broman", "given": "Elias", "initials": "E", "orcid": "0000-0001-9005-5168", "researcher": {"href": "https://publications.scilifelab.se/researcher/63826da04a1f4f80bc3229df12bac9b7.json"}}, {"family": "Shahabi-Ghahfarokhi", "given": "Sina", "initials": "S"}, {"family": "Rahmati-Abkenar", "given": "Mahboubeh", "initials": "M", "orcid": "0000-0002-3193-9331", "researcher": {"href": "https://publications.scilifelab.se/researcher/f64c520b937a4871ba129141b01042b9.json"}}, {"family": "Turner", "given": "Stephanie", "initials": "S"}, {"family": "St\u00e5hle", "given": "Magnus", "initials": "M"}, {"family": "Bergstr\u00f6m", "given": "Kristofer", "initials": "K"}, {"family": "Manoharan", "given": "Lokeshwaran", "initials": "L", "orcid": "0000-0001-9751-5745", "researcher": {"href": "https://publications.scilifelab.se/researcher/000321fd81b9457db66140246bbd9066.json"}}, {"family": "Ali", "given": "Ashfaq", "initials": "A"}, {"family": "Forsman", "given": "Anders", "initials": "A", "orcid": "0000-0001-9598-7618", "researcher": {"href": "https://publications.scilifelab.se/researcher/0a605b671cd3414d9c75c2408b74d3de.json"}}, {"family": "Hylander", "given": "Samuel", "initials": "S", "orcid": "0000-0002-3740-5998", "researcher": {"href": "https://publications.scilifelab.se/researcher/47f71565ec50426e9d4893a5335e5fa3.json"}}, {"family": "Dopson", "given": "Mark", "initials": "M", "orcid": "0000-0002-9622-3318", "researcher": {"href": "https://publications.scilifelab.se/researcher/1dc9cc6dadf6483e88d855dc78709a59.json"}}], "type": "journal-article", "published": "2022-03-08", "journal": {"title": "ISME COMMUN.", "issn": "2730-6151", "issn-l": null, "volume": "2", "issue": "1", "pages": null}, "abstract": null, "doi": "10.1038/s43705-022-00104-9", "pmid": null, "labels": {"Bioinformatics Support, Infrastructure and Training": "Collaborative", "Bioinformatics Support and Infrastructure": "Collaborative", "NGI Short read": "Service", "National Genomics Infrastructure": "Service", "Bioinformatics Support for Computational Resources": "Service", "Bioinformatics (NBIS)": "Collaborative"}, "xrefs": [], "notes": [], "created": "2022-03-28T08:58:38.250Z", "modified": "2024-01-16T13:48:37.272Z"}, {"entity": "publication", "iuid": "d1c02b37ff1e42cf98540d9d4d2e9035", "links": {"self": {"href": "https://publications.scilifelab.se/publication/d1c02b37ff1e42cf98540d9d4d2e9035.json"}, "display": {"href": "https://publications.scilifelab.se/publication/d1c02b37ff1e42cf98540d9d4d2e9035"}}, "title": "Connectivity of Fennoscandian Shield terrestrial deep biosphere microbiomes with surface communities.", "authors": [{"family": "Westmeijer", "given": "George", "initials": "G", "orcid": "0000-0002-5529-2237", "researcher": {"href": "https://publications.scilifelab.se/researcher/e2146c3e286d4f858efb5787cb3c74a2.json"}}, {"family": "Mehrshad", "given": "Maliheh", "initials": "M"}, {"family": "Turner", "given": "Stephanie", "initials": "S"}, {"family": "Alakangas", "given": "Linda", "initials": "L"}, {"family": "Sachpazidou", "given": "Varvara", "initials": "V"}, {"family": "Bunse", "given": "Carina", "initials": "C"}, {"family": "Pinhassi", "given": "Jarone", "initials": "J", "orcid": "0000-0002-6405-1347", "researcher": {"href": "https://publications.scilifelab.se/researcher/b352d814c2534b06a79992fda3bbb075.json"}}, {"family": "Ketzer", "given": "Marcelo", "initials": "M", "orcid": "0000-0003-4796-8177", "researcher": {"href": "https://publications.scilifelab.se/researcher/5224e1bded3a4866802b863ed32cb10e.json"}}, {"family": "\u00c5str\u00f6m", "given": "Mats", "initials": "M"}, {"family": "Bertilsson", "given": "Stefan", "initials": "S", "orcid": "0000-0002-4265-1835", "researcher": {"href": "https://publications.scilifelab.se/researcher/2c17765c2a9f4383b5383138d11ae93f.json"}}, {"family": "Dopson", "given": "Mark", "initials": "M", "orcid": "0000-0002-9622-3318", "researcher": {"href": "https://publications.scilifelab.se/researcher/1dc9cc6dadf6483e88d855dc78709a59.json"}}], "type": "journal article", "published": "2022-01-11", "journal": {"title": "Commun Biol", "issn": "2399-3642", "issn-l": "2399-3642", "volume": "5", "issue": "1", "pages": "37"}, "abstract": "The deep biosphere is an energy constrained ecosystem yet fosters diverse microbial communities that are key in biogeochemical cycling. Whether microbial communities in deep biosphere groundwaters are shaped by infiltration of allochthonous surface microorganisms or the evolution of autochthonous species remains unresolved. In this study, 16S rRNA gene amplicon analyses showed that few groups of surface microbes infiltrated deep biosphere groundwaters at the \u00c4sp\u00f6 Hard Rock Laboratory, Sweden, but that such populations constituted up to 49% of the microbial abundance. The dominant persisting phyla included Patescibacteria, Proteobacteria, and Epsilonbacteraeota. Despite the hydrological connection of the Baltic Sea with the studied groundwaters, infiltrating microbes predominantly originated from deep soil groundwater. Most deep biosphere groundwater populations lacked surface representatives, suggesting that they have evolved from ancient autochthonous populations. We propose that deep biosphere groundwater communities in the Fennoscandian Shield consist of selected infiltrated and indigenous populations adapted to the prevailing conditions.", "doi": "10.1038/s42003-021-02980-8", "pmid": "35017653", "labels": {"National Genomics Infrastructure": "Service", "NGI Stockholm (Genomics Applications)": "Service", "NGI Stockholm (Genomics Production)": "Service", "NGI Short read": "Service", "Bioinformatics Support for Computational Resources": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC8752596"}, {"db": "pii", "key": "10.1038/s42003-021-02980-8"}], "notes": [], "created": "2022-03-29T13:47:23.684Z", "modified": "2024-01-16T13:48:37.771Z"}]}