John Willy Valdemarsen

546 total citations
18 papers, 400 citations indexed

About

John Willy Valdemarsen is a scholar working on Global and Planetary Change, Nature and Landscape Conservation and Aquatic Science. According to data from OpenAlex, John Willy Valdemarsen has authored 18 papers receiving a total of 400 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Global and Planetary Change, 4 papers in Nature and Landscape Conservation and 2 papers in Aquatic Science. Recurrent topics in John Willy Valdemarsen's work include Marine and fisheries research (12 papers), Fish Ecology and Management Studies (2 papers) and Marine Bivalve and Aquaculture Studies (2 papers). John Willy Valdemarsen is often cited by papers focused on Marine and fisheries research (12 papers), Fish Ecology and Management Studies (2 papers) and Marine Bivalve and Aquaculture Studies (2 papers). John Willy Valdemarsen collaborates with scholars based in Norway, Germany and United Kingdom. John Willy Valdemarsen's co-authors include Bjørnar Isaksen, Roger B. Larsen, Ole Arve Misund, Arill Engås, Terje Jørgensen, Finbarr G. O’Neill, Steinar Olsen, Arne Johannessen, Anders Fernö and Olav Rune Godø and has published in prestigious journals such as Fisheries Research, Ocean & Coastal Management and Food and Agriculture Organization of the United Nations eBooks.

In The Last Decade

John Willy Valdemarsen

17 papers receiving 337 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John Willy Valdemarsen Norway 8 333 220 132 51 32 18 400
A. Govender South Africa 12 328 1.0× 173 0.8× 172 1.3× 158 3.1× 79 2.5× 29 437
Jean-Pierre Hallier France 9 357 1.1× 206 0.9× 271 2.1× 91 1.8× 21 0.7× 21 438
O.A. van Keeken Netherlands 9 311 0.9× 262 1.2× 225 1.7× 45 0.9× 49 1.5× 40 469
William H. Lenarz United States 9 243 0.7× 135 0.6× 157 1.2× 27 0.5× 84 2.6× 21 336
Laurence Fauconnet Portugal 11 248 0.7× 152 0.7× 169 1.3× 52 1.0× 51 1.6× 18 349
S. Ehrich Germany 11 389 1.2× 167 0.8× 227 1.7× 58 1.1× 161 5.0× 24 473
Andrea Petetta Italy 12 245 0.7× 128 0.6× 116 0.9× 69 1.4× 32 1.0× 28 312
Junita Diana Karlsen Denmark 15 454 1.4× 373 1.7× 210 1.6× 82 1.6× 65 2.0× 30 589
Gala Moreno Spain 13 379 1.1× 222 1.0× 333 2.5× 46 0.9× 31 1.0× 29 517
A. Abella Italy 12 420 1.3× 211 1.0× 249 1.9× 129 2.5× 31 1.0× 17 505

Countries citing papers authored by John Willy Valdemarsen

Since Specialization
Citations

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

Fields of papers citing papers by John Willy Valdemarsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John Willy Valdemarsen. 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 John Willy Valdemarsen. The network helps show where John Willy Valdemarsen may publish in the future.

Co-authorship network of co-authors of John Willy Valdemarsen

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

All Works

18 of 18 papers shown
1.
Utne, Kjell Rong, et al.. (2012). Cruise report from the coordinated ecosystem survey (IESSNS) with R/V ”G. O. Sars”, M/V “Brennholm”; M/V “Christian í Grótinum” and R/V “Arni Fridriksson” in the Norwegian Sea and surrounding waters, 1 July-10 August 2012. Duo Research Archive (University of Oslo). 5 indexed citations
2.
Jørgensen, Terje & John Willy Valdemarsen. (2010). Pelagisk tråling etter torskefisk : Pelagic trawling for cod. Duo Research Archive (University of Oslo). 1 indexed citations
3.
Jacobsen, Jan Arge, et al.. (2008). Fishery and utilisation of mesopelagic fishes and krill in the North Atlantic. KTH Publication Database DiVA (KTH Royal Institute of Technology). 4 indexed citations
4.
Valdemarsen, John Willy, Terje Jørgensen, & Arill Engås. (2007). Options to mitigate bottom habitat impact of dragged gears. Food and Agriculture Organization of the United Nations eBooks. 28 indexed citations
5.
Valdemarsen, John Willy, et al.. (2002). On the influence of towing speed and gear size on the selective properties of bottom trawls. Fisheries Research. 55(1-3). 103–119. 46 indexed citations
6.
Valdemarsen, John Willy. (2001). Technological trends in capture fisheries. Ocean & Coastal Management. 44(9-10). 635–651. 69 indexed citations
7.
Furevik, Dag M. & John Willy Valdemarsen. (1995). Fiskerimessig betydning av Odinfeltet. The importance of the Odin oil-field as a fishing area.. Duo Research Archive (University of Oslo). 1 indexed citations
8.
Valdemarsen, John Willy & Ole Arve Misund. (1995). Trawl designs and techniques used by Norwegian research vessels to sample fish in the pelagic zone. Duo Research Archive (University of Oslo). 32 indexed citations
9.
Valdemarsen, John Willy, et al.. (1993). Grid devices to select shrimp size in trawls. Duo Research Archive (University of Oslo). 4 indexed citations
10.
Godø, Olav Rune & John Willy Valdemarsen. (1993). A three level pelagic trawl for near surface sampling of juvenile fish. Duo Research Archive (University of Oslo). 3 indexed citations
11.
Isaksen, Bjørnar, et al.. (1992). Reduction of fish by-catch in shrimp trawl using a rigid separator grid in the aft belly. Fisheries Research. 13(3). 335–352. 150 indexed citations
12.
Isaksen, Bjørnar & John Willy Valdemarsen. (1986). Selectivity experiments with square mesh codends in bottom trawl. Duo Research Archive (University of Oslo). 18 indexed citations
13.
Valdemarsen, John Willy, Arill Engås, & Bjørnar Isaksen. (1985). Vertical entrance into a trawl of Barents Sea gadoids as studied with a two level fish trawl. Duo Research Archive (University of Oslo). 7 indexed citations
14.
Valdemarsen, John Willy, et al.. (1984). Preliminary Tests of a Shrimp-fish Separator Section for Use in Shrimp Trawls. Duo Research Archive (University of Oslo). 3 indexed citations
15.
Valdemarsen, John Willy. (1979). Behaviour aspects of fish in relation to oil platforms in the North Sea.. Duo Research Archive (University of Oslo). 11 indexed citations
16.
Valdemarsen, John Willy, Anders Fernö, & Arne Johannessen. (1977). Studies on the behaviour of some gadoid species in relation to traps. Duo Research Archive (University of Oslo). 6 indexed citations
17.
Olsen, Steinar & John Willy Valdemarsen. (1977). Fish distribution studies around offshore installations. Duo Research Archive (University of Oslo). 10 indexed citations
18.
Fernö, Anders, Arne Johannessen, Kjell Olsen, et al.. (1976). Fish behaviour in relation to long lines observed by TV. Duo Research Archive (University of Oslo). 2 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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