Siwert Nilsson

4.6k total citations · 1 hit paper
75 papers, 3.6k citations indexed

About

Siwert Nilsson is a scholar working on Ecology, Evolution, Behavior and Systematics, Molecular Biology and Plant Science. According to data from OpenAlex, Siwert Nilsson has authored 75 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 51 papers in Ecology, Evolution, Behavior and Systematics, 31 papers in Molecular Biology and 29 papers in Plant Science. Recurrent topics in Siwert Nilsson's work include Plant Diversity and Evolution (31 papers), Plant and Fungal Species Descriptions (23 papers) and Lichen and fungal ecology (19 papers). Siwert Nilsson is often cited by papers focused on Plant Diversity and Evolution (31 papers), Plant and Fungal Species Descriptions (23 papers) and Lichen and fungal ecology (19 papers). Siwert Nilsson collaborates with scholars based in Sweden, France and United States. Siwert Nilsson's co-authors include Stephen Blackmore, W. Punt, A. Le Thomas, P.P. Hoen, Staffan Persson, Alfred Traverse, Joseph Praglowski, John R. Rowley, Mary E. Endress and Gamal El‐Ghazaly and has published in prestigious journals such as Taxon, Annals of the Missouri Botanical Garden and International Archives of Allergy and Immunology.

In The Last Decade

Siwert Nilsson

73 papers receiving 3.3k citations

Hit Papers

Glossary of pollen and spore terminology 2006 2026 2012 2019 2006 500 1000 1.5k
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. Glossary of pollen and spore terminology
    2006 2.0k citations Siwert Nilsson et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Siwert Nilsson Sweden 23 2.9k 1.4k 1.4k 579 256 75 3.6k
Michael Hesse Austria 32 2.5k 0.9× 2.0k 1.4× 1.4k 1.0× 95 0.2× 201 0.8× 103 3.3k
G. Erdtman Sweden 20 4.5k 1.6× 2.2k 1.6× 2.6k 1.9× 125 0.2× 625 2.4× 47 6.1k
W. Punt Netherlands 27 3.1k 1.1× 1.6k 1.1× 1.5k 1.1× 49 0.1× 936 3.7× 69 4.3k
P.P. Hoen Netherlands 12 1.9k 0.7× 966 0.7× 898 0.7× 31 0.1× 329 1.3× 17 2.4k
I. K. Ferguson United Kingdom 24 1.5k 0.5× 874 0.6× 825 0.6× 18 0.0× 250 1.0× 81 2.0k
A. Le Thomas France 6 1.8k 0.6× 997 0.7× 807 0.6× 22 0.0× 173 0.7× 11 2.2k
James L. Reveal United States 19 1.8k 0.6× 955 0.7× 1.6k 1.2× 11 0.0× 461 1.8× 232 3.5k
I. J. Bassett Canada 17 551 0.2× 159 0.1× 775 0.6× 127 0.2× 103 0.4× 43 1.2k
Finn Borchsenius Denmark 27 1.2k 0.4× 361 0.3× 446 0.3× 29 0.1× 67 0.3× 68 1.9k
Yrjö Mäkinen Finland 10 294 0.1× 227 0.2× 331 0.2× 146 0.3× 70 0.3× 27 1.2k

Countries citing papers authored by Siwert Nilsson

Since Specialization
Citations

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

Fields of papers citing papers by Siwert Nilsson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Siwert Nilsson

This figure shows the co-authorship network connecting the top 25 collaborators of Siwert Nilsson. A scholar is included among the top collaborators of Siwert Nilsson 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 Siwert Nilsson. Siwert Nilsson 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.
Struwe, Lena, Siwert Nilsson, & Victor A. Albert. (2008). Roraimaea (Gentianaceae: Helieae)—A New Gentian Genus from White Sand Campinas and Cerro de la Neblina of Brazil and Venezuela. Harvard Papers in Botany. 13(1). 35–45. 4 indexed citations
2.
Endress, Mary E., R.W.J.M. van der Ham, Siwert Nilsson, et al.. (2007). A PHYLOGENETIC ANALYSIS OF ALYXIEAE (APOCYNACEAE) BASED ONRBCL,MATK,TRNL INTRON,TRNL-F SPACER SEQUENCES, AND MORPHOLOGICAL CHARACTERS1. Annals of the Missouri Botanical Garden. 94(1). 1–35. 16 indexed citations
3.
Nilsson, Siwert, et al.. (1999). Pollen morphology of some selected plant species from Horton Plains, Sri Lanka. Grana. 38(5). 289–295. 16 indexed citations
4.
Backlund, Anders & Siwert Nilsson. (1997). Pollen morphology and the systematic position of Triplostegia (Dipsacales). Taxon. 46(1). 21–31. 13 indexed citations
5.
Shvidenko, А., Sergey Venevsky, & Siwert Nilsson. (1996). Impact of disturbance on gross and net increment of Siberian forests. IIASA PURE (International Institute of Applied Systems Analysis). 1 indexed citations
6.
Salgado‐Labouriau, Maria Léa, et al.. (1993). Exine Sculpture inParianaPollen (Gramineae). Grana. 32(4-5). 243–249. 17 indexed citations
7.
Morton, Cynthia M., Siwert Nilsson, & Joseph Praglowski. (1993). Erdtman's Handbook of Palynology.. Brittonia. 45(4). 345–345. 43 indexed citations
8.
Fountain, David W., et al.. (1992). Expression of Birch Pollen-Specific IgE-Binding Activity in Seeds and Other Plant Parts of Birch Trees (<i>Betula verrucosa</i> Ehrh.). International Archives of Allergy and Immunology. 98(4). 370–376. 18 indexed citations
9.
Nilsson, Siwert, et al.. (1990). Energy dispersive x-ray (edx) investigations on some apocynaceae pollen. Grana. 29(3). 213–217. 3 indexed citations
10.
Endress, Mary E., Manfred Hesse, Siwert Nilsson, Armin Guggisberg, & Jiping Zhu. (1990). The systematic position of theHolarrheninae (Apocynaceae). Plant Systematics and Evolution. 171(1-4). 157–185. 15 indexed citations
11.
Nilsson, Siwert. (1988). Preliminary inventory of aerobiological monitoring stations in europe. Aerobiologia. 4(1-2). 4–7. 13 indexed citations
12.
Nilsson, Siwert, et al.. (1988). A Note on the Pollen Morphology of the Empetraceae. Grana. 27(4). 283–290. 7 indexed citations
13.
Bringfelt, Björn, INGA ENGSTRÖM, & Siwert Nilsson. (1982). An evaluation of some models to predict airborne pollen concentration from meteorological conditions in stockholm, sweden. Grana. 21(1). 59–64. 38 indexed citations
14.
Nilsson, Siwert, et al.. (1982). Pollen calendar for huddinge (sweden), 1977–1981. Grana. 21(3). 183–185. 15 indexed citations
15.
Nilsson, Siwert & Staffan Persson. (1981). Tree pollen spectra in the stockholm region (sweden), 1973–1980. Grana. 20(3). 179–182. 315 indexed citations
16.
Traverse, Alfred, et al.. (1979). Atlas of Airborne Pollen Grains and Spores in Northern Europe. The Bryologist. 82(2). 321–321. 45 indexed citations
17.
Nilsson, Siwert, et al.. (1978). Les Cneoraceae (Rutales): Étude Taxonomique, Palynologique et Systématique. Grana. 17(3). 125–139. 15 indexed citations
18.
Nilsson, Siwert, et al.. (1975). Bombacaceae neotropicae novae V. A New Species of Eriotheca from Brazil. Bulletin du Jardin botanique national de Belgique / Bulletin van de National Plantentuin van België. 45(1/2). 155–155. 5 indexed citations
19.
Nilsson, Siwert & John J. Skvarla. (1969). Pollen Morphology of Saprophytic Taxa in the Gentianaceae. Annals of the Missouri Botanical Garden. 56(3). 420–420. 19 indexed citations
20.
Nilsson, Siwert. (1964). On the Pollen Morphology in Lomatogonium A. Br. 5(3). 298–329. 7 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 Michael Hesse Breakdown of academic impact, for papers by G. Erdtman Breakdown of academic impact, for papers by W. Punt Breakdown of academic impact, for papers by P.P. Hoen Breakdown of academic impact, for papers by I. K. Ferguson Breakdown of academic impact, for papers by A. Le Thomas Breakdown of academic impact, for papers by James L. Reveal Breakdown of academic impact, for papers by I. J. Bassett Breakdown of academic impact, for papers by Finn Borchsenius Breakdown of academic impact, for papers by Yrjö Mäkinen
Rankless by CCL
2026