Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula
Abstract Background The west Antarctic Peninsula (WAP) is a region of rapid environmental changes, with regional differences in climate warming along the north–south axis of the peninsula. Along the WAP, Palmer corresponds to a warmer region with lesser sea ice extent in the north compared to Rother...
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2025-02-01
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| Series: | Environmental Microbiome |
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| Online Access: | https://doi.org/10.1186/s40793-025-00663-z |
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| author | Swan L. S. Sow Willem H. van de Poll Rachel Eveleth Jeremy J. Rich Hugh W. Ducklow Patrick D. Rozema Catherine M. Luria Henk Bolhuis Michael P. Meredith Linda A. Amaral-Zettler Julia C. Engelmann |
| author_facet | Swan L. S. Sow Willem H. van de Poll Rachel Eveleth Jeremy J. Rich Hugh W. Ducklow Patrick D. Rozema Catherine M. Luria Henk Bolhuis Michael P. Meredith Linda A. Amaral-Zettler Julia C. Engelmann |
| author_sort | Swan L. S. Sow |
| collection | DOAJ |
| description | Abstract Background The west Antarctic Peninsula (WAP) is a region of rapid environmental changes, with regional differences in climate warming along the north–south axis of the peninsula. Along the WAP, Palmer corresponds to a warmer region with lesser sea ice extent in the north compared to Rothera ~ 400 km to the south. Comprehensive and comparative, year-round assessments of the WAP microbial community dynamics in coastal surface waters at these two locations are imperative to understand the effects of regional climate warming variations on microbial community dynamics, but this is still lacking. Results We report on the seasonal diversity, taxonomic overview, as well as predicted inter-and intra-domain causal effects (interactions) of the bacterial and microbial eukaryotic communities close to the Palmer station and at the Rothera time-series site between July 2013 and April 2014. Our 16S- and 18S-rRNA gene amplicon sequencing data showed that across all seasons, both bacteria and microbial eukaryotic communities were considerably different between the two sites which could be attributed to seawater temperature, and sea ice coverage in combination with sea ice type differences. Overall, in terms of biotic drivers, causal-effect modelling suggests that bacteria were stronger drivers of ecosystem dynamics at Palmer, while microbial eukaryotes played a stronger role at Rothera. The parasitic taxa Syndiniales persevered at both sites across the seasons, with Palmer and Rothera harbouring different key groups. Up to 62.3% of the negative causal effects were driven by Syndiniales at Rothera compared to only 13.5% at Palmer, suggesting that parasitism drives community dynamics at Rothera more strongly than at Palmer. Conversely, SAR11 Clade II, which was less abundant but persistent year-round at both sites, was the dominant driver at Palmer, evidenced by many (28.2% and 37.4% of positive and negative effects respectively) strong causal effects. Article note: Kindly check first page article notes are correct. Conclusions Our research has shed light on the dynamics of microbial community composition and correlative interactions at two sampling locations that represent different climate regimes along the WAP. |
| format | Article |
| id | doaj-art-7259d5e47c494b01b4ede16233c31a81 |
| institution | Kabale University |
| issn | 2524-6372 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | BMC |
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| series | Environmental Microbiome |
| spelling | doaj-art-7259d5e47c494b01b4ede16233c31a812025-02-09T12:55:05ZengBMCEnvironmental Microbiome2524-63722025-02-0120111910.1186/s40793-025-00663-zSpatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic PeninsulaSwan L. S. Sow0Willem H. van de Poll1Rachel Eveleth2Jeremy J. Rich3Hugh W. Ducklow4Patrick D. Rozema5Catherine M. Luria6Henk Bolhuis7Michael P. Meredith8Linda A. Amaral-Zettler9Julia C. Engelmann10Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea ResearchCIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of GroningenDepartment of Geosciences, Oberlin CollegeSchool of Marine Sciences, Darling Marine Centre, University of MaineDepartment of Earth and Environmental Sciences, Columbia UniversityCIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of GroningenLaboratory of Systems Pharmacology, Harvard Medical SchoolDepartment of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea ResearchBritish Antarctic SurveyDepartment of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea ResearchDepartment of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea ResearchAbstract Background The west Antarctic Peninsula (WAP) is a region of rapid environmental changes, with regional differences in climate warming along the north–south axis of the peninsula. Along the WAP, Palmer corresponds to a warmer region with lesser sea ice extent in the north compared to Rothera ~ 400 km to the south. Comprehensive and comparative, year-round assessments of the WAP microbial community dynamics in coastal surface waters at these two locations are imperative to understand the effects of regional climate warming variations on microbial community dynamics, but this is still lacking. Results We report on the seasonal diversity, taxonomic overview, as well as predicted inter-and intra-domain causal effects (interactions) of the bacterial and microbial eukaryotic communities close to the Palmer station and at the Rothera time-series site between July 2013 and April 2014. Our 16S- and 18S-rRNA gene amplicon sequencing data showed that across all seasons, both bacteria and microbial eukaryotic communities were considerably different between the two sites which could be attributed to seawater temperature, and sea ice coverage in combination with sea ice type differences. Overall, in terms of biotic drivers, causal-effect modelling suggests that bacteria were stronger drivers of ecosystem dynamics at Palmer, while microbial eukaryotes played a stronger role at Rothera. The parasitic taxa Syndiniales persevered at both sites across the seasons, with Palmer and Rothera harbouring different key groups. Up to 62.3% of the negative causal effects were driven by Syndiniales at Rothera compared to only 13.5% at Palmer, suggesting that parasitism drives community dynamics at Rothera more strongly than at Palmer. Conversely, SAR11 Clade II, which was less abundant but persistent year-round at both sites, was the dominant driver at Palmer, evidenced by many (28.2% and 37.4% of positive and negative effects respectively) strong causal effects. Article note: Kindly check first page article notes are correct. Conclusions Our research has shed light on the dynamics of microbial community composition and correlative interactions at two sampling locations that represent different climate regimes along the WAP.https://doi.org/10.1186/s40793-025-00663-zWest Antarctic PeninsulaAntarcticaPalmer StationRothera Time SeriesAmplicon sequencingV6 |
| spellingShingle | Swan L. S. Sow Willem H. van de Poll Rachel Eveleth Jeremy J. Rich Hugh W. Ducklow Patrick D. Rozema Catherine M. Luria Henk Bolhuis Michael P. Meredith Linda A. Amaral-Zettler Julia C. Engelmann Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula Environmental Microbiome West Antarctic Peninsula Antarctica Palmer Station Rothera Time Series Amplicon sequencing V6 |
| title | Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula |
| title_full | Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula |
| title_fullStr | Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula |
| title_full_unstemmed | Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula |
| title_short | Spatial and temporal variation of Antarctic microbial interactions: a study around the west Antarctic Peninsula |
| title_sort | spatial and temporal variation of antarctic microbial interactions a study around the west antarctic peninsula |
| topic | West Antarctic Peninsula Antarctica Palmer Station Rothera Time Series Amplicon sequencing V6 |
| url | https://doi.org/10.1186/s40793-025-00663-z |
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