Johannes Iversen

5.9k total citations · 3 hit papers
8 papers, 5.0k citations indexed

About

Johannes Iversen is a scholar working on History, Endocrinology and Paleontology. According to data from OpenAlex, Johannes Iversen has authored 8 papers receiving a total of 5.0k indexed citations (citations by other indexed papers that have themselves been cited), including 3 papers in History, 2 papers in Endocrinology and 1 paper in Paleontology. Recurrent topics in Johannes Iversen's work include Historical and Archaeological Studies (3 papers), Plant and Fungal Interactions Research (2 papers) and Botany and Plant Ecology Studies (1 paper). Johannes Iversen is often cited by papers focused on Historical and Archaeological Studies (3 papers), Plant and Fungal Interactions Research (2 papers) and Botany and Plant Ecology Studies (1 paper). Johannes Iversen collaborates with scholars based in . Johannes Iversen's co-authors include Knut Fægri, I. K. Ferguson and Anders Klostergaard Petersen and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Biogeography and Scientific American.

In The Last Decade

Johannes Iversen

6 papers receiving 4.5k citations

Hit Papers

Textbook of Pollen Analysis 1973 2026 1990 2008 1989 1975 1973 1000 2.0k 3.0k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Textbook of Pollen Analysis
    1989 3.8k citations Knut Fægri, Johannes Iversen Medical Entomology and Zoology profile →
  2. Textbook of Pollen Analysis.
    1975 857 citations Knut Fægri, Johannes Iversen et al. Journal of Biogeography profile →
  3. The Development of Denmark's Nature since the Last Glacial
    1973 240 citations Johannes Iversen profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Johannes Iversen 6 3.6k 1.2k 1.1k 1.1k 1.0k 8 5.0k
Calvin J. Heusser United States 38 3.1k 0.9× 1.3k 1.0× 771 0.7× 968 0.9× 1.0k 1.0× 100 4.4k
Henriette Méon France 13 2.6k 0.7× 802 0.7× 1.1k 1.0× 768 0.7× 821 0.8× 38 3.7k
T. van der Hammen Netherlands 34 2.4k 0.7× 1.1k 0.9× 1.2k 1.1× 1.2k 1.1× 694 0.7× 104 4.9k
H. Godwin United Kingdom 37 1.8k 0.5× 874 0.7× 835 0.7× 1.5k 1.4× 619 0.6× 105 4.9k
Rolf W. Mathewes Canada 43 3.7k 1.0× 1.5k 1.2× 1.1k 1.0× 823 0.7× 919 0.9× 143 5.3k
Maurice Reille France 43 5.0k 1.4× 1.3k 1.0× 1.5k 1.3× 729 0.6× 2.3k 2.3× 87 6.6k
Brigitta Ammann Switzerland 42 4.1k 1.1× 1.0k 0.9× 1.2k 1.0× 488 0.4× 1.3k 1.3× 92 4.9k
Willem O. van der Knaap Switzerland 46 3.8k 1.0× 1.7k 1.4× 900 0.8× 1.2k 1.1× 676 0.7× 108 6.0k
Sander van der Kaars Australia 41 3.2k 0.9× 1.3k 1.0× 1.1k 0.9× 474 0.4× 1.2k 1.2× 78 4.9k
Thompson Webb United States 45 4.9k 1.3× 2.4k 2.0× 846 0.7× 1.2k 1.1× 900 0.9× 70 7.4k

Countries citing papers authored by Johannes Iversen

Since Specialization
Citations

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

Fields of papers citing papers by Johannes Iversen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Johannes Iversen

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

All Works

8 of 8 papers shown
1.
Iversen, Johannes. (2002). The Influence of Prehistoric Man of Vegetation. 105–116.
2.
Iversen, Johannes, et al.. (2002). Anmeldelser. SHILAP Revista de lepidopterología.
3.
Fægri, Knut & Johannes Iversen. (1989). Textbook of Pollen Analysis. Medical Entomology and Zoology. 3750 indexed citations breakdown →
4.
Ferguson, I. K., Knut Fægri, Johannes Iversen, & Knut Fægri. (1976). Textbook of Pollen Analysis. Kew Bulletin. 31(1). 192–192. 90 indexed citations
5.
Fægri, Knut, et al.. (1975). Textbook of Pollen Analysis.. Journal of Biogeography. 2(4). 310–310. 857 indexed citations breakdown →
6.
Iversen, Johannes. (1973). The Development of Denmark's Nature since the Last Glacial. 240 indexed citations breakdown →
7.
Iversen, Johannes. (1960). Problems of the early postglacial forest development in Denmark. Medical Entomology and Zoology. 3. 5–31. 8 indexed citations
8.
Iversen, Johannes. (1956). Forest Clearance in the Stone Age. Scientific American. 194(3). 36–41. 55 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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