Ivar Gjerde

1.9k total citations
63 papers, 1.4k citations indexed

About

Ivar Gjerde is a scholar working on Insect Science, Ecology, Evolution, Behavior and Systematics and Nature and Landscape Conservation. According to data from OpenAlex, Ivar Gjerde has authored 63 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Insect Science, 25 papers in Ecology, Evolution, Behavior and Systematics and 22 papers in Nature and Landscape Conservation. Recurrent topics in Ivar Gjerde's work include Forest Ecology and Biodiversity Studies (26 papers), Lichen and fungal ecology (22 papers) and Ecology and Vegetation Dynamics Studies (20 papers). Ivar Gjerde is often cited by papers focused on Forest Ecology and Biodiversity Studies (26 papers), Lichen and fungal ecology (22 papers) and Ecology and Vegetation Dynamics Studies (20 papers). Ivar Gjerde collaborates with scholars based in Norway, India and Sweden. Ivar Gjerde's co-authors include Magne Sætersdal, Hans H. Blom, Jørund Rolstad, Ken Olaf Storaunet, Per Wegge, Vegard Gundersen, Einar Heegaard, Per G. Ihlen, Harald Aurlien and Nils Erik Gilhus and has published in prestigious journals such as Ecology, Conservation Biology and Journal of Applied Ecology.

In The Last Decade

Ivar Gjerde

59 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ivar Gjerde Norway 25 569 476 468 403 367 63 1.4k
Thomas D. Lee United States 19 249 0.4× 212 0.4× 703 1.5× 334 0.8× 293 0.8× 42 1.1k
David G. Herbert South Africa 16 337 0.6× 756 1.6× 500 1.1× 50 0.1× 1.3k 3.5× 84 1.9k
Megan E. O’Rourke United States 18 747 1.3× 848 1.8× 343 0.7× 602 1.5× 226 0.6× 40 1.5k
Yiyuan Li China 23 308 0.5× 387 0.8× 193 0.4× 236 0.6× 1.3k 3.6× 67 2.4k
James Skelton United States 22 166 0.3× 456 1.0× 173 0.4× 228 0.6× 799 2.2× 53 1.2k
Matthew E. Arnegard United States 24 516 0.9× 52 0.1× 954 2.0× 91 0.2× 553 1.5× 40 2.3k
Joseph S. Wilson United States 23 1.1k 2.0× 459 1.0× 304 0.6× 293 0.7× 214 0.6× 91 1.8k
Gösta Eriksson Sweden 21 227 0.4× 74 0.2× 582 1.2× 590 1.5× 177 0.5× 81 1.5k
L. Hansson Sweden 28 223 0.4× 34 0.1× 415 0.9× 94 0.2× 824 2.2× 69 1.9k
Elizabeth A. Newell United States 19 224 0.4× 43 0.1× 349 0.7× 207 0.5× 127 0.3× 30 1.0k

Countries citing papers authored by Ivar Gjerde

Since Specialization
Citations

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

Fields of papers citing papers by Ivar Gjerde

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ivar Gjerde

This figure shows the co-authorship network connecting the top 25 collaborators of Ivar Gjerde. A scholar is included among the top collaborators of Ivar Gjerde 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 Ivar Gjerde. Ivar Gjerde 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.
Gjerde, Ivar, et al.. (2025). Assembling a late‐successional lichen community by long‐distance dispersal: Lessons for restoration. Journal of Applied Ecology. 62(3). 593–603. 1 indexed citations
2.
Gjerde, Ivar, et al.. (2021). Identifying old Norway spruce and Scots pine trees by morphological traits and site characteristics. Scandinavian Journal of Forest Research. 36(7-8). 550–562. 5 indexed citations
3.
Grytnes, John‐Arvid, et al.. (2020). Using Red List species in designating protection status to forest areas: a case study on the problem of spatio-temporal dynamics. Biodiversity and Conservation. 29(11-12). 3429–3443. 5 indexed citations
4.
Astrup, Rasmus, Even Bergseng, Ryan M. Bright, et al.. (2019). Effekter av planting av skog på nye arealer. Betydning for klima, miljø og næring. Duo Research Archive (University of Oslo).
5.
Owe, Jone Furlund, et al.. (2016). Utredning ved mistenkt kronisk utmattelsessyndrom/myalgisk encefalopati. Tidsskrift for Den norske legeforening. 136(3). 227–232. 7 indexed citations
6.
Tzoulis, Charalampos, Paweł Sztromwasser, Stefan Johansson, et al.. (2016). PNKP Mutations Identified by Whole-Exome Sequencing in a Norwegian Patient with Sporadic Ataxia and Edema. The Cerebellum. 16(1). 272–275. 15 indexed citations
7.
Tzoulis, Charalampos, Thomas Schwarzlmüller, Ivar Gjerde, et al.. (2015). Excellent response of intramedullary Erdheim-Chester disease to vemurafenib: a case report. BMC Research Notes. 8(1). 171–171. 24 indexed citations
8.
Gjerde, Ivar, et al.. (2014). DD-009 The important role of the hospital pharmacist in the Norwegian drug tendering process. European Journal of Hospital Pharmacy. 21(Suppl 1). A66.2–A67. 1 indexed citations
9.
Tzoulis, Charalampos, Christian A. Vedeler, Mette Haugen, et al.. (2013). Progressive striatal necrosis associated with anti-NMDA receptor antibodies. BMC Neurology. 13(1). 55–55. 20 indexed citations
10.
Tzoulis, Charalampos, Gia Tuong Tran, Ivar Gjerde, et al.. (2011). Leukoencephalopathy with brainstem and spinal cord involvement caused by a novel mutation in the DARS2 gene. Journal of Neurology. 259(2). 292–296. 25 indexed citations
11.
Gjerde, Ivar, Hans H. Blom, Louise Lindblom, Magne Sætersdal, & Fride Høistad Schei. (2011). Community assembly in epiphytic lichens in early stages of colonization. Ecology. 93(4). 749–759. 41 indexed citations
12.
Aurlien, Harald, Jan Aarseth, Ivar Gjerde, et al.. (2007). Focal epileptiform activity described by a large computerised EEG database. Clinical Neurophysiology. 118(6). 1369–1376. 4 indexed citations
13.
Rolstad, Jørund & Ivar Gjerde. (2003). Skoglevende organismers spredningsevne - en litteraturgjennomgang. BIBSYS Brage (BIBSYS (Norway)). 1 indexed citations
14.
Rolstad, Jørund, Ivar Gjerde, Vegard Gundersen, & Magne Sætersdal. (2002). Use of Indicator Species to Assess Forest Continuity: a Critique. Conservation Biology. 16(1). 253–257. 80 indexed citations
15.
Rolstad, Jørund, Ivar Gjerde, Ken Olaf Storaunet, & Erlend Rolstad. (2001). EPIPHYTIC LICHENS IN NORWEGIAN COASTAL SPRUCE FOREST: HISTORIC LOGGING AND PRESENT FOREST STRUCTURE. Ecological Applications. 11(2). 421–436. 59 indexed citations
16.
Aurlien, Harald, et al.. (1999). A new way of building a database of EEG findings. Clinical Neurophysiology. 110(5). 986–995. 12 indexed citations
17.
Storaunet, Ken Olaf, Jørund Rolstad, Ivar Gjerde, & Erlend Rolstad. (1998). Nyere skogshistorie og forekomst av utvalgte lav-arter i kystgranskog i Namdalen. BIBSYS Brage (BIBSYS (Norway)). 1 indexed citations
18.
Gjerde, Ivar, et al.. (1992). Hvitryggspetten på Østlandet. Hekkehabitat og bestandsutvikling sett i forhold til driftsendringer i landbruket. BIBSYS Brage (BIBSYS (Norway)).
19.
Gjerde, Ivar, R. E. Strandjord, & M Ulstein. (1988). The course of epilepsy during pregnancy: a study of 78 cases. Acta Neurologica Scandinavica. 78(3). 198–205. 45 indexed citations
20.
Gjerde, Ivar, et al.. (1984). Cerebral Schistosomiasis Presenting as a Brain Tumor. European Neurology. 23(4). 229–236. 16 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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