Browsing Bergen Open Research Archive by Author "Våge, Selina"
Now showing items 1-14 of 14
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Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence
Sandaa, Ruth-Anne; Saltvedt, Marius Rydningen; Dahle, Håkon; Wang, Haina; Våge, Selina; Blanc-Mathieu, Romain; Steen, Ida Helene; Grimsley, Nigel; Edvardsen, Bente; Ogata, Hiroyuki; Lawrence, Janice (Journal article; Peer reviewed, 2022)Collectively known as phytoplankton, photosynthetic microbes form the base of the marine food web, and account for up to half of the primary production on Earth. Haptophytes are key components of this phytoplankton community, ... -
Differential toxicity of bioorthogonal non-canonical amino acids (BONCAT) in Escherichia coli
Landor, Lotta Anni Ingeborg; Bratbak, Gunnar; Larsen, Aud; Tjendra, Jesslyn; Våge, Selina (Journal article; Peer reviewed, 2023)Single-cell methods allow studying the activity of single bacterial cells, potentially shedding light on regulatory mechanisms involved in services like biochemical cycling. Bioorthogonal non-canonical amino acid tagging ... -
Fractal hypothesis of the pelagic microbial ecosystem-can simple ecological principles lead to self-similar complexity in the pelagic microbial food web?
Våge, Selina; Thingstad, Tron Frede (Peer reviewed; Journal article, 2015-12-01)Trophic interactions are highly complex and modern sequencing techniques reveal enormous biodiversity across multiple scales in marine microbial communities. Within the chemically and physically relatively homogeneous ... -
Individual-based model highlights the importance of trade-offs for virus-host population dynamics and long-term coexistence
Pourhasanzade, Fateme; Iyer, Swami; Tjendra, Jesslyn; Landor, Lotta Anni Ingeborg; Våge, Selina (Journal article; Peer reviewed, 2022)Viruses play diverse and important roles in ecosystems. In recent years, trade-offs between host and virus traits have gained increasing attention in viral ecology and evolution. However, microbial organism traits, and ... -
Linking internal and external bacterial community control gives mechanistic framework for pelagic virus-to-bacteria ratios
Våge, Selina; Pree, Bernadette; Thingstad, Tron Frede (Peer reviewed; Journal article, 2016-11)For more than 25 years, virus-to-bacteria ratios (VBR) have been measured and interpreted as indicators of the importance of viruses in aquatic ecosystems, yet a generally accepted theory for understanding mechanisms ... -
Modelling approaches for capturing plankton diversity (MODIV), their societal applications and data needs
Acevedo-Trejos, Esteban; Cadier, Mathilde; Chakraborty, Subhendu; Chen, Bingzhang; Cheung, Shun Yan; Grigoratou, Maria; Guill, Christian; Hassenrück, Christiane; Kerimoglu, Onur; Klauschies, Toni; Lindemann, Christian; Palacz, Artur; Ryabov, Alexey; Scotti, Marco; Smith, S. Lan; Våge, Selina; Prowe, Friederike (Journal article; Peer reviewed, 2022)Ecosystem models need to capture biodiversity, because it is a fundamental determinant of food web dynamics and consequently of the cycling of energy and matter in ecosystems. In oceanic food webs, the plankton compartment ... -
Molecular evidence of parallel evolution in a cyanophage
Tjendra, Jesslyn; Storesund, Julia Endresen; Dahle, Håkon; Sandaa, Ruth-Anne; Våge, Selina (Journal article; Peer reviewed, 2023)Antagonistic interactions between bacteriophage (phage) and its bacterial host drives the continual selection for resistance and counter-defence. To date, much remains unknown about the genomic evolution that occurs as ... -
Optimal defense strategies in an idealized microbial food web under trade-off between competition and defense
Våge, Selina; Storesund, Julia Endresen; Giske, Jarl; Thingstad, Tron Frede (Peer reviewed; Journal article, 2014-07-07)Trophic mechanisms that can generate biodiversity in food webs include bottom-up (growth rate regulating) and top-down (biomass regulating) factors. The top-down control has traditionally been analyzed using the concepts ... -
Pelagic microbial food web organization. Extending the theory for structure and diversity generating mechanisms based on life strategy trade-offs
Våge, Selina (Doctoral thesis, 2014-04-04) -
Reproducing the virus-to-copepod link in Arctic mesocosms using host fitness optimization.
Thingstad, T. Frede; Larsen, Aud; Bratbak, Gunnar; Våge, Selina; Egge, Jorun Karin; Sandaa, Ruth-Anne; Nejstgaard, Jens Christian (Journal article; Peer reviewed, 2020)By shunting material out of the predatory pathway toward detritus and dissolved material, viruses are believed to have an important impact on biogeochemical functions of the pelagic microbial food web. To include viruses ... -
The Response of Heterotrophic Prokaryote and Viral Communities to Labile Organic Carbon Inputs Is Controlled by the Predator Food Chain Structure
Sandaa, Ruth-Anne; Pree, Bernadette; Larsen, Aud; Våge, Selina; Tøpper, Birte; Töpper, Joachim Paul; Thyrhaug, Runar; Thingstad, Tron Frede (Peer reviewed; Journal article, 2017-08-23)Factors controlling the community composition of marine heterotrophic prokaryotes include organic-C, mineral nutrients, predation, and viral lysis. Two mesocosm experiments, performed at an Arctic location and bottom-up ... -
The role of mixotrophic protists in the biological carbon pump
Mitra, Aditee; Flynn, Kevin J.; Burkholder, Joann M.; Berge, Terje; Calbet, Albert; Raven, John A.; Granéli, Edna; Glibert, Patricia M.; Hansen, Per Juel; Stoecker, Diane K.; Thingstad, Tron Frede; Tillmann, Urban; Våge, Selina; Wilken, Susanne; Zubkov, Mikhail V. (Peer reviewed; Journal article, 2014-02-20)The traditional view of the planktonic food web describes consumption of inorganic nutrients by photoautotrophic phytoplankton, which in turn supports zooplankton and ultimately higher trophic levels. Pathways centred on ... -
Simple models combining competition, defence and resource availability have broad implications in pelagic microbial food webs
Våge, Selina; Bratbak, Gunnar; Egge, Jorun Karin; Heldal, Mikal; Larsen, Aud; Norland, Svein; Paulsen, Maria Lund; Pree, Bernadette; Sandaa, Ruth-Anne; Skjoldal, Evy Foss; Tsagaraki, Tatiana Margo; Øvreås, Lise; Thingstad, T. Frede (Peer reviewed; Journal article, 2018-09)In food webs, interactions between competition and defence control the partitioning of limiting resources. As a result, simple models of these interactions contain links between biogeochemistry, diversity, food web structure ... -
Temperate infection in a virus–host system previously known for virulent dynamics
Knowles, Ben; Bonachela, Juan A.; Behrenfeld, Michael J.; Bondoc, Karen G.; Cael, B.B.; Carlson, Craig; Cieslik, Nick; Diaz, Ben; Fuchs, Heidi L.; Graff, Jason; Grasis, Juris; Halsey, Kimberly; Haramaty, Liti; Johns, Christopher T.; Natale, Frank; Nissimov, Jozef I.; Schieler, Brittany; Thamatrakoln, Kimberlee; Thingstad, T. Frede; Våge, Selina; Watkins, Cliff; Westberry, Toby K.; Bidle, Kay D. (Journal article; Peer reviewed, 2020)The blooming cosmopolitan coccolithophore Emiliania huxleyi and its viruses (EhVs) are a model for density-dependent virulent dynamics. EhVs commonly exhibit rapid viral reproduction and drive host death in high-density ...