Øystein Johnsen

3.9k total citations · 1 hit paper
62 papers, 3.0k citations indexed

About

Øystein Johnsen is a scholar working on Plant Science, Nature and Landscape Conservation and Molecular Biology. According to data from OpenAlex, Øystein Johnsen has authored 62 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Plant Science, 32 papers in Nature and Landscape Conservation and 17 papers in Molecular Biology. Recurrent topics in Øystein Johnsen's work include Forest ecology and management (22 papers), Seedling growth and survival studies (17 papers) and Plant Molecular Biology Research (15 papers). Øystein Johnsen is often cited by papers focused on Forest ecology and management (22 papers), Seedling growth and survival studies (17 papers) and Plant Molecular Biology Research (15 papers). Øystein Johnsen collaborates with scholars based in Norway, United Kingdom and Germany. Øystein Johnsen's co-authors include Tore Skrøppa, Carl Gunnar Fossdal, Michael G. Ryan, George L. Vourlitis, Henrik Saxe, M. G. R. Cannell, Igor Yakovlev, Olavi Junttila, Ola Gram Dæhlen and Harald Kvaalen and has published in prestigious journals such as New Phytologist, Molecular Ecology and Plant Cell & Environment.

In The Last Decade

Øystein Johnsen

59 papers receiving 2.7k citations

Hit Papers

Tree and forest functioning in response to global warming 2001 2026 2009 2017 2001 200 400 600
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.

  1. Tree and forest functioning in response to global warming
    2001 648 citations Henrik Saxe, M. G. R. Cannell et al. New Phytologist profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Øystein Johnsen Norway 28 1.6k 1.0k 977 772 524 62 3.0k
David Sánchez‐Gómez Spain 28 1.4k 0.9× 1.5k 1.4× 1.4k 1.5× 323 0.4× 548 1.0× 52 2.9k
Wolfram Beyschlag Germany 34 2.0k 1.2× 1.0k 1.0× 1.4k 1.4× 357 0.5× 398 0.8× 90 3.5k
Christoph Sperisen Switzerland 29 1.8k 1.1× 669 0.6× 525 0.5× 625 0.8× 389 0.7× 54 3.5k
Bartolomeo Schirone Italy 29 611 0.4× 865 0.8× 722 0.7× 329 0.4× 613 1.2× 68 2.2k
Paul D. Rymer Australia 25 970 0.6× 802 0.8× 976 1.0× 314 0.4× 351 0.7× 78 2.4k
Ismael Aranda Spain 39 2.0k 1.2× 2.1k 2.0× 2.5k 2.6× 485 0.6× 1.2k 2.3× 113 4.2k
Anna W. Schoettle United States 30 1.1k 0.7× 1.2k 1.2× 1.9k 1.9× 297 0.4× 761 1.5× 102 2.9k
Thomas Geburek Austria 25 795 0.5× 786 0.8× 375 0.4× 414 0.5× 452 0.9× 65 2.4k
Kari Laine Finland 29 1.3k 0.8× 788 0.8× 432 0.4× 296 0.4× 380 0.7× 87 2.5k
Cynthia S. Jones United States 23 957 0.6× 767 0.7× 558 0.6× 345 0.4× 221 0.4× 53 2.0k

Countries citing papers authored by Øystein Johnsen

Since Specialization
Citations

This map shows the geographic impact of Øystein Johnsen'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 Øystein Johnsen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Øystein Johnsen more than expected).

Fields of papers citing papers by Øystein Johnsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Øystein Johnsen. 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 Øystein Johnsen. The network helps show where Øystein Johnsen may publish in the future.

Co-authorship network of co-authors of Øystein Johnsen

This figure shows the co-authorship network connecting the top 25 collaborators of Øystein Johnsen. A scholar is included among the top collaborators of Øystein Johnsen 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 Øystein Johnsen. Øystein Johnsen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Bräutigam, Katharina, Kelly Vining, Clément Lafon Placette, et al.. (2013). Epigenetic regulation of adaptive responses of forest tree species to the environment. Ecology and Evolution. 3(2). 399–415. 251 indexed citations
2.
Yakovlev, Igor, Carl Gunnar Fossdal, & Øystein Johnsen. (2010). MicroRNAs, the epigenetic memory and climatic adaptation in Norway spruce. New Phytologist. 187(4). 1154–1169. 119 indexed citations
3.
Yakovlev, Igor, et al.. (2010). Differential gene expression related to an epigenetic memory affecting climatic adaptation in Norway spruce. Plant Science. 180(1). 132–139. 73 indexed citations
4.
Yakovlev, Igor, Carl Gunnar Fossdal, Anna Holefors, et al.. (2010). Gene expression changes during short day induced terminal bud formation in Norway spruce. Plant Cell & Environment. 34(2). 332–346. 29 indexed citations
5.
Yakovlev, Igor, et al.. (2009). Effect of bud burst forcing on transcript expression of selected genes in needles of Norway spruce during autumn. Plant Physiology and Biochemistry. 47(8). 681–689. 4 indexed citations
6.
Tollefsrud, Mari Mette, Jørn Henrik Sønstebø, Christian Brochmann, et al.. (2009). Combined analysis of nuclear and mitochondrial markers provide new insight into the genetic structure of North European Picea abies. Heredity. 102(6). 549–562. 111 indexed citations
7.
Tollefsrud, Mari Mette, Félix Gugerli, Øystein Johnsen, et al.. (2008). Genetic consequences of glacial survival and postglacial colonization in Norway spruce: combined analysis of mitochondrial DNA and fossil pollen. Molecular Ecology. 17(18). 4134–4150. 208 indexed citations
8.
Yakovlev, Igor, et al.. (2008). Dehydrins expression related to timing of bud burst in Norway spruce. Planta. 228(3). 459–472. 68 indexed citations
9.
Kvaalen, Harald & Øystein Johnsen. (2007). Timing of bud set in Picea abies is regulated by a memory of temperature during zygotic and somatic embryogenesis. New Phytologist. 177(1). 49–59. 113 indexed citations
10.
Skrøppa, Tore, et al.. (2007). Field performance and early test results of offspring from two Norway spruce seed orchards containing clones transferred to warmer climates. Canadian Journal of Forest Research. 37(3). 515–522. 38 indexed citations
11.
Johnsen, Øystein, et al.. (2007). Effects of early long-night treatment on diameter and height growth, second flush and frost tolerance in two-year-old Picea abies container seedlings. Scandinavian Journal of Forest Research. 22(5). 375–383. 17 indexed citations
12.
Skrøppa, Tore, et al.. (2005). Resultater fra forsøk med avkom fra Kaupanger granfrøplantasje. Duo Research Archive (University of Oslo). 1 indexed citations
13.
Johnsen, Øystein, et al.. (2005). Freezing tolerance in two Norway spruce (Picea abies [L.] Karst.) progenies is physiologically correlated with drought tolerance. Journal of Plant Physiology. 162(5). 549–558. 51 indexed citations
14.
Mølmann, Jørgen, Olavi Junttila, Øystein Johnsen, & Jorunn E. Olsen. (2005). Effects of red, far‐red and blue light in maintaining growth in latitudinal populations of Norway spruce (Picea abies). Plant Cell & Environment. 29(2). 166–172. 59 indexed citations
15.
Skrøppa, Tore, et al.. (2003). Apoplastic Peroxidases in Needles of Norway Spruce ( Picea abies ) Progenies from Different Crossing Environments. Forstwissenschaftliches Centralblatt. 122(3). 153–159. 4 indexed citations
16.
17.
Saxe, Henrik, M. G. R. Cannell, Øystein Johnsen, Michael G. Ryan, & George L. Vourlitis. (2001). Tree and forest functioning in response to global warming. New Phytologist. 149(3). 369–399. 648 indexed citations breakdown →
18.
Johnsen, Øystein, Tore Skrøppa, Olavi Junttila, & Ola Gram Dæhlen. (1996). Influence of the female flowering environment on autumn frost-hardiness of Picea abies progenies. Theoretical and Applied Genetics. 92(7). 797–802. 43 indexed citations
19.
Johnsen, Øystein, et al.. (1994). Seed cone abortion and full seed production in an indoor seed orchard with potted grafts of Picea abies. Scandinavian Journal of Forest Research. 9(1-4). 329–332. 5 indexed citations
20.
Johnsen, Øystein & Geir Østreng. (1994). Effects of plus tree selection and seed orchard environment on progenies of Piceaabies. Canadian Journal of Forest Research. 24(1). 32–38. 19 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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