Gunnar Bratbak

12.8k total citations · 4 hit papers
102 papers, 9.6k citations indexed

About

Gunnar Bratbak is a scholar working on Ecology, Oceanography and Plant Science. According to data from OpenAlex, Gunnar Bratbak has authored 102 papers receiving a total of 9.6k indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Ecology, 36 papers in Oceanography and 18 papers in Plant Science. Recurrent topics in Gunnar Bratbak's work include Microbial Community Ecology and Physiology (69 papers), Bacteriophages and microbial interactions (50 papers) and Marine and coastal ecosystems (31 papers). Gunnar Bratbak is often cited by papers focused on Microbial Community Ecology and Physiology (69 papers), Bacteriophages and microbial interactions (50 papers) and Marine and coastal ecosystems (31 papers). Gunnar Bratbak collaborates with scholars based in Norway, France and United Kingdom. Gunnar Bratbak's co-authors include Mikal Heldal, T. Frede Thingstad, Knut Yngve Børsheim, Øivind Bergh, I. Dundas, Runar Thyrhaug, Corina P. D. Brussaard, Aud Larsen, Ruth‐Anne Sandaa and JK Egge and has published in prestigious journals such as Nature, Nature Communications and Environmental Science & Technology.

In The Last Decade

Gunnar Bratbak

101 papers receiving 9.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

High abundance of viruses found in aquatic environments

1989 1.2k citations Knut Yngve Børsheim, Gunnar Bratbak et al. Nature profile →
Bacterial dry matter content and biomass estimations

1984 537 citations Gunnar Bratbak, I. Dundas profile →
Enumeration of Marine Viruses in Culture and Natural Samples by Flow Cytometry

1999 508 citations Corina P. D. Brussaard, Runar Thyrhaug et al. profile →
Cell volume to cell carbon conversion factors for a bacterivorous Monas sp. enriched from seawater

1987 497 citations Gunnar Bratbak et al. profile →

Peers

Gunnar Bratbak

ECOLO

OCEAN

Markus G. Weinbauer France

Corina P. D. Brussaard Netherlands

Mikal Heldal Norway

Grieg F. Steward United States

Steven W. Wilhelm United States

Alban Ramette Germany

Mathias Middelboe Denmark

Nianzhi Jiao China

Ian Hewson United States

Stéphan Jacquet France

Markus G. Weinbauer France

Gunnar Bratbak

8.6k ×1.1

ECOLO

3.1k ×1.0

OCEAN

2.0k ×1.1

1.3k ×0.9

1.4k ×1.0

Citations per year, relative to Gunnar Bratbak Gunnar Bratbak (= 1×) peers Markus G. Weinbauer

Countries citing papers authored by Gunnar Bratbak

Since Specialization

Citations

This map shows the geographic impact of Gunnar Bratbak's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Gunnar Bratbak with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Gunnar Bratbak more than expected).

Fields of papers citing papers by Gunnar Bratbak

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Gunnar Bratbak. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Gunnar Bratbak. The network helps show where Gunnar Bratbak may publish in the future.

Co-authorship network of co-authors of Gunnar Bratbak

This figure shows the co-authorship network connecting the top 25 collaborators of Gunnar Bratbak. A scholar is included among the top collaborators of Gunnar Bratbak based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Gunnar Bratbak. Gunnar Bratbak is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hoppe, Clara J. M., Niels Fuchs, Dirk Notz, et al.. (2024). Photosynthetic light requirement near the theoretical minimum detected in Arctic microalgae. Nature Communications. 15(1). 7385–7385. 17 indexed citations

Müller, Oliver, Tobias R. Vonnahme, Philipp Assmy, et al.. (2023). Interannual differences in sea ice regime in the north-western Barents Sea cause major changes in summer pelagic production and export mechanisms. Progress In Oceanography. 220. 103178–103178. 6 indexed citations

Kauko, Hanna M., Philipp Assmy, Ilka Peeken, et al.. (2022). First phytoplankton community assessment of the Kong Håkon VII Hav, Southern Ocean, during austral autumn. Biogeosciences. 19(23). 5449–5482. 4 indexed citations

Müller, Oliver, et al.. (2021). How Microbial Food Web Interactions Shape the Arctic Ocean Bacterial Community Revealed by Size Fractionation Experiments. Microorganisms. 9(11). 2378–2378. 3 indexed citations

Egge, Elianne, Daniel Vaulot, Uwe John, et al.. (2021). An 18S V4 rRNA metabarcoding dataset of protist diversity in the Atlantic inflow to the Arctic Ocean, through the year and down to 1000 m depth. Earth system science data. 13(10). 4913–4928. 19 indexed citations

Thingstad, T. Frede, Selina Våge, Gunnar Bratbak, et al.. (2020). Reproducing the virus‐to‐copepod link in Arctic mesocosms using host fitness optimization. Limnology and Oceanography. 66(S1). 6 indexed citations

Tsagaraki, Tatiana M., Aud Larsen, Gunnar Bratbak, et al.. (2018). Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study. The ISME Journal. 12(11). 2694–2705. 18 indexed citations

Larsen, Aud, Jorun K. Egge, Paolo Simonelli, et al.. (2016). Dampened copepod‐mediated trophic cascades in a microzooplankton‐dominated microbial food web: A mesocosm study. Limnology and Oceanography. 62(3). 1031–1044. 15 indexed citations

Bratbak, Gunnar, Aud Larsen, Hiroyuki Ogata, et al.. (2014). Characterisation of three novel giant viruses reveals huge diversity among viruses infecting Prymnesiales (Haptophyta). Virology. 476. 180–188. 36 indexed citations

10.

Medina‐Sánchez, Juan Manuel, et al.. (2013). Maximum in the Middle: Nonlinear Response of Microbial Plankton to Ultraviolet Radiation and Phosphorus. PLoS ONE. 8(4). e60223–e60223. 20 indexed citations

11.

Heldal, Mikal, Svein Norland, Egil S. Erichsen, T. Frede Thingstad, & Gunnar Bratbak. (2012). An Unaccounted Fraction of Marine Biogenic CaCO3 Particles. PLoS ONE. 7(10). e47887–e47887. 10 indexed citations

12.

Ogata, Hiroyuki, Jessica Louise Ray, Kensuke Toyoda, et al.. (2011). Two new subfamilies of DNA mismatch repair proteins (MutS) specifically abundant in the marine environment. The ISME Journal. 5(7). 1143–1151. 63 indexed citations

13.

Monier, Adam, Jens Borggaard Larsen, Ruth‐Anne Sandaa, et al.. (2008). Marine mimivirus relatives are probably large algal viruses. Virology Journal. 5(1). 12–12. 91 indexed citations

14.

Thingstad, T. Frede, R. G. J. Bellerby, Gunnar Bratbak, et al.. (2008). Counterintuitive carbon-to-nutrient coupling in an Arctic pelagic ecosystem. Nature. 455(7211). 387–390. 146 indexed citations

15.

Yan, Xiaodong, Paul R. Chipman, Tonje Castberg, Gunnar Bratbak, & Timothy S. Baker. (2005). The Marine Algal Virus PpV01 Has an Icosahedral Capsid with T=219 Quasisymmetry. Journal of Virology. 79(14). 9236–9243. 52 indexed citations

16.

Brussaard, Corina P. D., Anna A.M. Noordeloos, Ruth‐Anne Sandaa, Mikal Heldal, & Gunnar Bratbak. (2004). Discovery of a dsRNA virus infecting the marine photosynthetic protist Micromonas pusilla. Virology. 319(2). 280–291. 81 indexed citations

17.

Sandaa, Ruth‐Anne, Evy Foss Skjoldal, & Gunnar Bratbak. (2003). Virioplankton community structure along a salinity gradient in a solar saltern. Extremophiles. 7(5). 347–351. 26 indexed citations

18.

Jacquet, Stéphan & Gunnar Bratbak. (2003). Effects of ultraviolet radiation on marine virusâphytoplankton interactions. FEMS Microbiology Ecology. 44(3). 279–289. 57 indexed citations

19.

Sandaa, Ruth‐Anne, Mikal Heldal, Tonje Castberg, Runar Thyrhaug, & Gunnar Bratbak. (2001). Isolation and Characterization of Two Viruses with Large Genome Size Infecting Chrysochromulina ericina (Prymnesiophyceae) and Pyramimonas orientalis (Prasinophyceae). Virology. 290(2). 272–280. 117 indexed citations

20.

Thingstad, T. Frede, Mikal Heldal, Gunnar Bratbak, & I. Dundas. (1993). Are viruses important partners in pelagic fend webs?. Trends in Ecology & Evolution. 8(6). 209–213. 86 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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