Ingegjerd Opstad

501 total citations
21 papers, 437 citations indexed

About

Ingegjerd Opstad is a scholar working on Aquatic Science, Global and Planetary Change and Nature and Landscape Conservation. According to data from OpenAlex, Ingegjerd Opstad has authored 21 papers receiving a total of 437 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Aquatic Science, 7 papers in Global and Planetary Change and 6 papers in Nature and Landscape Conservation. Recurrent topics in Ingegjerd Opstad's work include Aquaculture Nutrition and Growth (10 papers), Fish Ecology and Management Studies (5 papers) and Marine and fisheries research (4 papers). Ingegjerd Opstad is often cited by papers focused on Aquaculture Nutrition and Growth (10 papers), Fish Ecology and Management Studies (5 papers) and Marine and fisheries research (4 papers). Ingegjerd Opstad collaborates with scholars based in Norway, United States and Canada. Ingegjerd Opstad's co-authors include Neil W. Ross, Michael H. Horn, Anna K. Gawlicka, Ole Torrissen, Arnt J. Raae, Øivind Bergh, Per Gunnar Kvenseth, Karin Pittman, Kristin Hamre and Jostein Solbakken and has published in prestigious journals such as Aquaculture, Marine Biology and Aquaculture Research.

In The Last Decade

Ingegjerd Opstad

19 papers receiving 399 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ingegjerd Opstad Norway 7 364 163 144 130 86 21 437
J. Walford Singapore 7 379 1.0× 143 0.9× 258 1.8× 99 0.8× 64 0.7× 9 474
K. Hoehne‐Reitan Norway 10 374 1.0× 159 1.0× 219 1.5× 91 0.7× 48 0.6× 12 416
Haruo Honda Japan 13 338 0.9× 159 1.0× 184 1.3× 84 0.6× 63 0.7× 20 439
Per Gunnar Kvenseth Norway 7 330 0.9× 108 0.7× 144 1.0× 160 1.2× 143 1.7× 14 407
Alastair Mitchell United Kingdom 10 328 0.9× 136 0.8× 172 1.2× 137 1.1× 43 0.5× 17 428
Yoav Barr Israel 11 479 1.3× 202 1.2× 199 1.4× 118 0.9× 123 1.4× 11 585
Volker Hilge Germany 13 219 0.6× 85 0.5× 136 0.9× 160 1.2× 73 0.8× 35 402
Ines Ben Khemis Tunisia 12 333 0.9× 128 0.8× 161 1.1× 108 0.8× 57 0.7× 20 418
Dominique Schuchardt Spain 9 436 1.2× 158 1.0× 230 1.6× 88 0.7× 43 0.5× 16 504
Jostein Solbakken Norway 7 302 0.8× 107 0.7× 165 1.1× 88 0.7× 53 0.6× 9 377

Countries citing papers authored by Ingegjerd Opstad

Since Specialization
Citations

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

Fields of papers citing papers by Ingegjerd Opstad

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ingegjerd Opstad

This figure shows the co-authorship network connecting the top 25 collaborators of Ingegjerd Opstad. A scholar is included among the top collaborators of Ingegjerd Opstad 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 Ingegjerd Opstad. Ingegjerd Opstad 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.
Opstad, Ingegjerd, Per Gunnar Fjelldal, Ørjan Karlsen, et al.. (2013). The effect of triploidization of Atlantic cod (Gadus morhua L.) on survival, growth and deformities during early life stages. Aquaculture. 388-391. 54–59. 23 indexed citations
2.
Agnalt, Ann‐Lisbeth, et al.. (2009). Kyst og havbruk 2009. 1 indexed citations
3.
Hamre, Kristin, Mari Moren, Jostein Solbakken, Ingegjerd Opstad, & Karin Pittman. (2005). The impact of nutrition on metamorphosis in Atlantic halibut (Hippoglossus hippoglossus L.). Aquaculture. 250(3-4). 555–565. 59 indexed citations
4.
Opstad, Ingegjerd & Michael Rust. (2004). Effect of recovery salinity on survival of acutely stressed halibut (Hippoglossus hippoglossus L) larvae. Aquaculture Research. 35(13). 1286–1291. 4 indexed citations
5.
Skiftesvik, Anne Berit, Ørjan Karlsen, Ingegjerd Opstad, & Ole Torrissen. (2003). Vitenskapelig grunnlag for nye arter i oppdrett. Duo Research Archive (University of Oslo). 1 indexed citations
6.
Gawlicka, Anna K., et al.. (2000). Activity of digestive enzymes in yolk-sac larvae of Atlantic halibut (Hippoglossus hippoglossus): indication of readiness for first feeding. Aquaculture. 184(3-4). 303–314. 210 indexed citations
7.
Solemdal, Per, Øivind Bergh, Geir Dahle, et al.. (1993). Size of spawning Arcto-Norwegian cod (Gadus morhua L.) and the effects on their eggs and early larvae. Duo Research Archive (University of Oslo). 12 indexed citations
8.
Opstad, Ingegjerd & Øivind Bergh. (1993). Culture parameters, growth and mortality of halibut (Hippoglossus hippoglossus L.) yolk sac larvae in upwelling incubators. Aquaculture. 109(1). 1–11. 25 indexed citations
9.
Solemdal, Per, Øivind Bergh, Roderick Nigel Finn, et al.. (1992). The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. 2. Preliminary results of the experiment in 1992. Duo Research Archive (University of Oslo). 1 indexed citations
10.
Solemdal, Per, Olav Sigurd Kjesbu, Ingegjerd Opstad, et al.. (1991). A comparison of egg quality and larval viability between cultured coastal cod and wild arcto-norwegian cod. Duo Research Archive (University of Oslo). 3 indexed citations
11.
Opstad, Ingegjerd & Øivind Bergh. (1990). Effects of continuous flow rate on development and mortality of halibut yolk sac larvae. Duo Research Archive (University of Oslo). 3 indexed citations
12.
Skiftesvik, Anne Berit, et al.. (1990). Effects of light on the development, activity and mortality of halibut (Hippoglossus hippoglossus L.) yolk sac larvae. Duo Research Archive (University of Oslo). 5 indexed citations
13.
Bergh, Øivind, et al.. (1989). Preliminary report on the effects of temperature on the development of eggs and larvae of halibut (Hippoglossus hippoglossus) and on the bacterial population in the incubators. Duo Research Archive (University of Oslo). 3 indexed citations
14.
Raae, Arnt J., et al.. (1988). RNA, DNA and protein during early development in feeding and starved cod (Gadus morhua L.) larvae. Aquaculture. 73(1-4). 247–259. 59 indexed citations
15.
Klungsöyr, Leiv, et al.. (1987). Artificial start-feed for cod larvae (Gadus MorhuaL.) based upon cod roe. Sarsia. 72(3-4). 373–374. 6 indexed citations
16.
Opstad, Ingegjerd & Arnt J. Raae. (1986). Physical stress on halibut larvae. Duo Research Archive (University of Oslo). 9 indexed citations
17.
Huse, Ingvar, et al.. (1984). Intensive production of cod fry at Austevoll. Final report.. Duo Research Archive (University of Oslo). 4 indexed citations
18.
Huse, Ingvar, et al.. (1983). Intensive production of cod fry systems and results so far. Duo Research Archive (University of Oslo). 1 indexed citations
19.
Huse, Ingvar, et al.. (1982). Present status of an intensive cod-rearing experiment at Austevoll, Norway. BIBSYS Brage (BIBSYS (Norway)). 1 indexed citations
20.
Huse, Ingvar, Bernt T. Walther, Ingegjerd Opstad, & Leiv Klungsöyr. (1982). Endocrine and nutritional factors affecting the first food uptake by cod larvae. BIBSYS Brage (BIBSYS (Norway)). 1 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by J. Walford Breakdown of academic impact, for papers by K. Hoehne‐Reitan Breakdown of academic impact, for papers by Haruo Honda Breakdown of academic impact, for papers by Per Gunnar Kvenseth Breakdown of academic impact, for papers by Alastair Mitchell Breakdown of academic impact, for papers by Yoav Barr Breakdown of academic impact, for papers by Volker Hilge Breakdown of academic impact, for papers by Ines Ben Khemis Breakdown of academic impact, for papers by Dominique Schuchardt Breakdown of academic impact, for papers by Jostein Solbakken
Rankless by CCL
2026