Helge Johnsen

1.5k total citations
48 papers, 1.2k citations indexed

About

Helge Johnsen is a scholar working on Aquatic Science, Nature and Landscape Conservation and Physiology. According to data from OpenAlex, Helge Johnsen has authored 48 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Aquatic Science, 21 papers in Nature and Landscape Conservation and 19 papers in Physiology. Recurrent topics in Helge Johnsen's work include Aquaculture Nutrition and Growth (23 papers), Fish Ecology and Management Studies (20 papers) and Reproductive biology and impacts on aquatic species (19 papers). Helge Johnsen is often cited by papers focused on Aquaculture Nutrition and Growth (23 papers), Fish Ecology and Management Studies (20 papers) and Reproductive biology and impacts on aquatic species (19 papers). Helge Johnsen collaborates with scholars based in Norway, Sweden and United Kingdom. Helge Johnsen's co-authors include Helge Tveiten, Malcolm Jobling, Even H. Jørgensen, Bjørn‐Steinar Sæther, James B. Mercer, Arnoldus Schytte Blix, Arne M. Arnesen, Ian Mayer, Frode Fonnum and Øyvind Aas-Hansen and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Scientific Reports.

In The Last Decade

Helge Johnsen

48 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Helge Johnsen Norway 22 573 509 397 352 161 48 1.2k
Munehico Iwata Japan 22 529 0.9× 456 0.9× 444 1.1× 342 1.0× 127 0.8× 58 1.2k
B.A. McKeown Canada 25 761 1.3× 280 0.6× 468 1.2× 528 1.5× 210 1.3× 87 1.5k
Peter S. Davie New Zealand 26 723 1.3× 860 1.7× 239 0.6× 1.1k 3.2× 256 1.6× 75 1.8k
David G. Butler Canada 21 620 1.1× 275 0.5× 381 1.0× 696 2.0× 157 1.0× 86 1.4k
Pierre‐Yves Le Bail France 17 992 1.7× 445 0.9× 579 1.5× 382 1.1× 238 1.5× 29 1.7k
Monika Schmitz Sweden 27 692 1.2× 599 1.2× 812 2.0× 297 0.8× 106 0.7× 70 1.7k
Alberta Mandich Italy 22 648 1.1× 402 0.8× 509 1.3× 381 1.1× 335 2.1× 59 1.7k
Guy Nonnotte France 20 561 1.0× 367 0.7× 143 0.4× 641 1.8× 290 1.8× 37 1.1k
Takashi Yada Japan 25 829 1.4× 267 0.5× 447 1.1× 580 1.6× 547 3.4× 65 1.6k
Vincent van Ginneken Netherlands 17 419 0.7× 417 0.8× 430 1.1× 297 0.8× 94 0.6× 43 967

Countries citing papers authored by Helge Johnsen

Since Specialization
Citations

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

Fields of papers citing papers by Helge Johnsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Helge Johnsen

This figure shows the co-authorship network connecting the top 25 collaborators of Helge Johnsen. A scholar is included among the top collaborators of Helge 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 Helge Johnsen. Helge 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.
2.
García‐Carpintero, Victor, L. Pérez, Víctor Gallego, et al.. (2019). Cold seawater induces early sexual developmental stages in the BPG axis of European eel males. BMC Genomics. 20(1). 597–597. 11 indexed citations
3.
Moghadam, Hooman K., Hanne Johnsen, Nicholas A. Robinson, et al.. (2017). Impacts of Early Life Stress on the Methylome and Transcriptome of Atlantic Salmon. Scientific Reports. 7(1). 5023–5023. 47 indexed citations
4.
Olsen, Stein Harris, et al.. (2017). Effects of exhaustive swimming and subsequent recuperation on flesh quality in unstressed Atlantic cod ( Gadus morhua ). Fisheries Research. 193. 158–163. 8 indexed citations
5.
Frantzen, Marianne, Inger‐Britt Falk‐Petersen, Helge Johnsen, et al.. (2016). Effects of chronic dietary petroleum exposure on reproductive development in polar cod (Boreogadus saida). Aquatic Toxicology. 180. 196–208. 32 indexed citations
6.
Johnsen, Helge, et al.. (2013). Evoked potentials in the Atlantic cod following putatively innocuous and putatively noxious electrical stimulation: a minimally invasive approach. Fish Physiology and Biochemistry. 40(1). 173–181. 4 indexed citations
7.
Jørgensen, Even H. & Helge Johnsen. (2013). Rhythmic life of the Arctic charr: Adaptations to life at the edge. Marine Genomics. 14. 71–81. 44 indexed citations
8.
Tveiten, Helge, P. A. Bjørn, Helge Johnsen, Bengt Finstad, & R. S. McKinley. (2010). Effects of the sea louse Lepeophtheirus salmonis on temporal changes in cortisol, sex steroids, growth and reproductive investment in Arctic charr Salvelinus alpinus. Journal of Fish Biology. 76(10). 2318–2341. 42 indexed citations
9.
Johnsen, Helge, et al.. (2009). Growth hormone and cortisol treatment stimulate seawater tolerance in both anadromous and landlocked Arctic charr. Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology. 153(4). 378–385. 9 indexed citations
10.
Frantzen, Marianne, Børge Damsgård, Helge Tveiten, et al.. (2004). Effects of fasting on temporal changes in plasma concentrations of sex steroids, growth hormone and insulin‐like growth factor I, and reproductive investment in Arctic charr. Journal of Fish Biology. 65(6). 1526–1542. 21 indexed citations
11.
Tveiten, Helge, Alexander P. Scott, & Helge Johnsen. (2000). Plasma-Sulfated C21-Steroids Increase during the Periovulatory Period in Female Common Wolffish and Are Influenced by Temperature during Vitellogenesis. General and Comparative Endocrinology. 117(3). 464–473. 19 indexed citations
12.
Johnsen, Helge, Helge Tveiten, Nils Peder Willassen, & Arne M. Arnesen. (1999). Arctic charr (Salvelinus alpinus) vitellogenin: development and validation of an enzyme-linked immunosorbent assay. Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology. 124(3). 355–362. 31 indexed citations
13.
Arnesen, Arne M., Helge Johnsen, Atle Mortensen, & Malcolm Jobling. (1998). Acclimation of Atlantic salmon (Salmo salar L.) smolts to `cold' sea water following direct transfer from fresh water. Aquaculture. 168(1-4). 351–367. 40 indexed citations
14.
Paulsen, Ragnhild E., et al.. (1995). Three related brain nuclear receptors, NGFI-B, Nurr1, and NOR-1, as transcriptional activators. Journal of Molecular Neuroscience. 6(4). 249–255. 74 indexed citations
15.
Johnsen, Helge, et al.. (1991). Carboxylesterases in guinea pig. Biochemical Pharmacology. 42(7). 1335–1343. 15 indexed citations
16.
Johnsen, Helge, et al.. (1988). Cytotoxicity and effects of T2-toxin on plasma proteines involved in coagulation, fibrinolysis and kallikrein-kinin system. Archives of Toxicology. 61(3). 237–240. 6 indexed citations
17.
Johnsen, Helge, et al.. (1988). Metabolism of T-2 toxin by blood cell carboxylesterases. Biochemical Pharmacology. 37(16). 3193–3197. 25 indexed citations
18.
Johnsen, Helge, A. S. Blix, & James B. Mercer. (1986). Selective cooling of the brain in reindeer. SHILAP Revista de lepidopterología. 6(1). 111–111. 14 indexed citations
19.
Fonnum, Frode, Sigrun H. Sterri, Pål Aas, & Helge Johnsen. (1985). Carboxylesterases, Importance for Detoxification of Organophosphorus Anticholinesterases and Trichothecenes. Toxicological Sciences. 5(6part2). 29–38. 3 indexed citations
20.
Mercer, James B., Helge Johnsen, Arnoldus Schytte Blix, & Ragnar Hotvedt. (1985). Central control of expired air temperature and other thermoregulatory effectors in reindeer. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 248(6). R679–R685. 14 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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