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Articles by Ellen Oldenburg
Arctic Ocean virus communities and their seasonality, bipolarity, and prokaryotic associations - Nature Communications
Abstract Viruses of microbes play important roles in ocean environments as agents of mortality and genetic transfer, influencing ecology, evolution and biogeochemistry. However, we know little about the diversity, seasonality, and host interactions of viruses in polar waters. Here, we study dsDNA viruses in the Arctic Fram Strait across four years via 47 long-read metagenomes of the cellular size-fraction. Among 5662 vOTUs, 98% and 2% are Caudoviricetes and Megaviricetes, respectively.
Author Correction: Seasonal recurrence and modular assembly of an Arctic pelagic marine microbiome - Nature Communications
Correction to: Nature Communications https://doi.org/10.1038/s41467-025-56203-3, published online 3 February 2025 In the version of the article initially published, in Fig. 4c, the “M5 (autumn)” graph was originally a duplicate of the “M4 (summer)” graph and has now been corrected in the HTML and PDF versions of the article.
Seasonal recurrence and modular assembly of an Arctic pelagic marine microbiome - Nature Communications
Abstract Deciphering how microbial communities are shaped by environmental variability is fundamental for understanding the structure and function of ocean ecosystems. While seasonal environmental gradients have been shown to structure the taxonomic dynamics of microbiomes over time, little is known about their impact on functional dynamics and the coupling between taxonomy and function.
Beyond blooms: the winter ecosystem reset determines microeukaryotic community dynamics in the Fram Strait - Communications Earth & Environment
Abstract The Arctic Ocean is undergoing a major transition as a result of global warming, with uncertain consequences for its ecosystems. Our study introduces an integrated analytical approach using co-occurrence networks, convergent cross-mapping, and energy landscape analysis.
Arctic Ocean virus communities: seasonality, bipolarity, and prokaryotic interactions
Abstract Viruses play important roles in ocean environments as agents of mortality and genetic transfer, influencing ecology, evolution and biogeochemical processes. However, we know little about the diversity, seasonality, and host interactions of viruses in polar waters. To address this, we studied dsDNA viruses in the Arctic Fram Strait across four years via 47 long-read metagenomes of the cellular size-fraction.
Seasonal recurrence and modular assembly of an Arctic pelagic marine microbiome
Abstract Deciphering how microbial communities are shaped by environmental variability is fundamental for understanding the structure and function of ocean ecosystems. Thus far, we know little about the structuring of community functionality and the coupling between taxonomy and function over seasonal environmental gradients.
Beyond blooms: A novel time series analysis framework predicts seasonal keystone species and sheds light on Arctic pelagic ecosystem stability
Abstract A thorough understanding of ecosystem functioning in the Arctic Ocean, a region under severe threat by climate change, requires detailed studies on linkages between biodiversity and ecosystem stability. The identification of keystone species with special relevance for ecosystem stability is of great importance, yet difficult to achieve with established community assessments.
Beyond blooms: A novel time series analysis framework predicts seasonal keystone species and sheds light on Arctic pelagic ecosystem stability
Abstract A thorough understanding of ecosystem functioning in the Arctic Ocean, a region under severe threat by climate change, requires detailed studies on linkages between biodiversity and ecosystem stability. The identification of keystone species with special relevance for ecosystem stability is of great importance, yet difficult to achieve with established community assessments.
Beyond blooms: A novel time series analysis framework predicts seasonal keystone species and sheds light on ecosystem stability in the Fram strait
Abstract A thorough understanding of ecosystem functioning in the Arctic Ocean, a region under severe threat by climate change, requires detailed studies on inhabiting biological communities. The identification of keystone species with special ecological relevance is of great importance, yet difficult to achieve with established community assessments.
Atlantic water influx and sea-ice cover drive taxonomic and functional shifts in Arctic marine bacterial communities - The ISME Journal
Abstract The Arctic Ocean is experiencing unprecedented changes because of climate warming, necessitating detailed analyses on the ecology and dynamics of biological communities to understand current and future ecosystem shifts.
Sea-ice melt determines seasonal phytoplankton dynamics and delimits the habitat of temperate Atlantic taxa as the Arctic Ocean atlantifies
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