Freddy Johnsen

416 total citations
7 papers, 360 citations indexed

About

Freddy Johnsen is a scholar working on Aquatic Science, Animal Science and Zoology and Agronomy and Crop Science. According to data from OpenAlex, Freddy Johnsen has authored 7 papers receiving a total of 360 indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Aquatic Science, 3 papers in Animal Science and Zoology and 3 papers in Agronomy and Crop Science. Recurrent topics in Freddy Johnsen's work include Aquaculture Nutrition and Growth (4 papers), Ruminant Nutrition and Digestive Physiology (3 papers) and Aquaculture disease management and microbiota (3 papers). Freddy Johnsen is often cited by papers focused on Aquaculture Nutrition and Growth (4 papers), Ruminant Nutrition and Digestive Physiology (3 papers) and Aquaculture disease management and microbiota (3 papers). Freddy Johnsen collaborates with scholars based in Norway, Denmark and South Korea. Freddy Johnsen's co-authors include Marie Hillestad, Torbjørn Åsgård, Anders Skrede, Arkadios Dimitroglou and Patrick Reynolds and has published in prestigious journals such as Aquaculture, Aquaculture Research and Journal of Aquaculture Research & Development.

In The Last Decade

Freddy Johnsen

7 papers receiving 315 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Freddy Johnsen Norway	6	305	215	149	73	28	7	360
S. Viola Israel	13	576 1.9×	301 1.4×	243 1.6×	147 2.0×	38 1.4×	16	624
Tarcila Souza de Castro Silva Brazil	11	328 1.1×	183 0.9×	80 0.5×	46 0.6×	15 0.5×	34	369
Alexandre Firmino Diógenes Portugal	13	405 1.3×	256 1.2×	157 1.1×	69 0.9×	66 2.4×	19	451
Gary Reinitz United States	13	416 1.4×	211 1.0×	178 1.2×	93 1.3×	28 1.0×	21	479
John L. Gill United States	2	388 1.3×	238 1.1×	133 0.9×	98 1.3×	31 1.1×	3	445
M.Dianne Plotnikoff Canada	9	357 1.2×	189 0.9×	215 1.4×	44 0.6×	49 1.8×	9	381
Ioannis Karacostas Greece	6	353 1.2×	244 1.1×	179 1.2×	53 0.7×	36 1.3×	7	385
Se‐Min Choi South Korea	10	422 1.4×	226 1.1×	205 1.4×	59 0.8×	57 2.0×	24	439
Ruguang Chen United States	9	389 1.3×	286 1.3×	126 0.8×	53 0.7×	11 0.4×	12	424
Mahmoud Rowshandeli Canada	8	465 1.5×	271 1.3×	216 1.4×	88 1.2×	86 3.1×	9	509

Countries citing papers authored by Freddy Johnsen

Since Specialization

Citations

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

Fields of papers citing papers by Freddy Johnsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Freddy Johnsen

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

All Works

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7 of 7 papers shown

1.

Dimitroglou, Arkadios, et al.. (2011). The Effect of Mannan Oligosaccharide Supplementation on Atlantic Salmon Smolts (Salmo salar L.) Fed Diets with High Levels of Plant Proteins. Journal of Aquaculture Research & Development. s1. 44 indexed citations

2.

Hillestad, Marie, Freddy Johnsen, & Torbjørn Åsgård. (2001). Protein to carbohydrate ratio in high-energy diets for Atlantic salmon (Salmo salar L.). Aquaculture Research. 32(7). 517–529. 49 indexed citations

3.

Hillestad, Marie & Freddy Johnsen. (1994). High-energy/low-protein diets for Atlantic salmon: effects on growth, nutrient retention and slaughter quality. Aquaculture. 124(1-4). 109–116. 218 indexed citations

4.

Johnsen, Freddy, et al.. (1984). Availability of Nitrogen in Different Protein Sources, Particularly as regards Fish viscera Silage for in Vitro Digestibility of Starch and Cellulose. Acta Agriculturae Scandinavica. 34(1). 17–25. 5 indexed citations

5.

Johnsen, Freddy, et al.. (1982). Effect of Fish Viscera Silage on the Rumen Metabolism of Sheep. Acta Agriculturae Scandinavica. 32(3). 253–261. 3 indexed citations

6.

Johnsen, Freddy & Anders Skrede. (1981). Evaluation of Fish Viscera Silage as a Feed Resource. Acta Agriculturae Scandinavica. 31(1). 21–28. 26 indexed citations

7.

Johnsen, Freddy, et al.. (1981). Digestion and Duodenal Flow of Ammonia-Treated Straw, and Sodium Hydroxide-Treated Straw Supplemented with Urea, Soybean Meal or Fish Viscera Silage. Acta Agriculturae Scandinavica. 31(3). 245–250. 15 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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