Coastal Bacterial Community Response to Glacier Melting in the Western Antarctic Peninsula

Simple item page
dc.contributor.authorAlcaman-Arias, Maria Estrella
dc.contributor.authorFuentes-Alburquenque, Sebastian
dc.contributor.authorVergara-Barros, Pablo
dc.contributor.authorCifuentes-Anticevic, Jeronimo
dc.contributor.authorVerdugo, Josefa
dc.contributor.authorPolz, Martin
dc.contributor.authorFarias, Laura
dc.contributor.authorPedros-Alio, Carlos
dc.contributor.authorDiez, Beatriz
dc.date.accessioned2025-01-20T23:54:38Z
dc.date.available2025-01-20T23:54:38Z
dc.date.issued2021
dc.description.abstractCurrent warming in the Western Antarctic Peninsula (WAP) has multiple effects on the marine ecosystem, modifying the trophic web and the nutrient regime. In this study, the effect of decreased surface salinity on the marine microbial community as a consequence of freshening from nearby glaciers was investigated in Chile Bay, Greenwich Island, WAP. In the summer of 2016, samples were collected from glacier ice and transects along the bay for 16S rRNA gene sequencing, while in situ dilution experiments were conducted and analyzed using 16S rRNA gene sequencing and metatranscriptomic analysis. The results reveal that certain common seawater genera, such as Polaribacter, Pseudoalteromonas and HTCC2207, responded positively to decreased salinity in both the bay transect and experiments. The relative abundance of these bacteria slightly decreased, but their functional activity was maintained and increased the over time in the dilution experiments. However, while ice bacteria, such as Flavobacterium and Polaromonas, tolerated the increased salinity after mixing with seawater, their gene expression decreased considerably. We suggest that these bacterial taxa could be defined as sentinels of freshening events in the Antarctic coastal system. Furthermore, these results suggest that a significant portion of the microbial community is resilient and can adapt to disturbances, such as freshening due to the warming effect of climate change in Antarctica.
dc.fuente.origenWOS
dc.identifier.doi10.3390/microorganisms9010088
dc.identifier.eissn2076-2607
dc.identifier.urihttps://doi.org/10.3390/microorganisms9010088
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95039
dc.identifier.wosidWOS:000610585700001
dc.issue.numero1
dc.language.isoen
dc.revistaMicroorganisms
dc.rightsacceso restringido
dc.subjectglacial melting
dc.subjectbacterial microbial community
dc.subjectcoastal Antarctic zone
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleCoastal Bacterial Community Response to Glacier Melting in the Western Antarctic Peninsula
dc.typeartículo
dc.volumen9
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas