Ferry Siemensma

401 total citations
27 papers, 299 citations indexed

About

Ferry Siemensma is a scholar working on Molecular Biology, Ecology and Paleontology. According to data from OpenAlex, Ferry Siemensma has authored 27 papers receiving a total of 299 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Molecular Biology, 16 papers in Ecology and 7 papers in Paleontology. Recurrent topics in Ferry Siemensma's work include Protist diversity and phylogeny (18 papers), Microbial Community Ecology and Physiology (9 papers) and Geology and Paleoclimatology Research (7 papers). Ferry Siemensma is often cited by papers focused on Protist diversity and phylogeny (18 papers), Microbial Community Ecology and Physiology (9 papers) and Geology and Paleoclimatology Research (7 papers). Ferry Siemensma collaborates with scholars based in Netherlands, Germany and Switzerland. Ferry Siemensma's co-authors include R.M.M. Roijackers, Kenneth Dumack, Maria Holzmann, Jan Pawłowski, Michael Bonkowski, Andrew J. Gooday, Laure Apothéloz‐Perret‐Gentil, Enrique Lara, Renata Matoničkin Kepčija and Daniel J. G. Lahr and has published in prestigious journals such as Molecular Ecology Resources, The Journal of Foraminiferal Research and Protist.

In The Last Decade

Ferry Siemensma

24 papers receiving 279 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ferry Siemensma Netherlands 11 213 169 94 60 51 27 299
Miguel Méndez Sandín France 11 150 0.7× 200 1.2× 105 1.1× 28 0.5× 28 0.5× 14 282
A.C. Boere Netherlands 7 121 0.6× 215 1.3× 55 0.6× 78 1.3× 63 1.2× 10 302
Aurore André Germany 6 96 0.5× 227 1.3× 127 1.4× 141 2.4× 26 0.5× 7 299
D. Chardez Belgium 12 257 1.2× 251 1.5× 65 0.7× 236 3.9× 61 1.2× 41 449
Igor Dovgal Ukraine 10 181 0.8× 193 1.1× 179 1.9× 5 0.1× 18 0.4× 74 319
Kelley J. Bright United States 7 224 1.1× 226 1.3× 137 1.5× 27 0.5× 19 0.4× 9 364
Ralf Aurahs Germany 7 92 0.4× 285 1.7× 202 2.1× 281 4.7× 59 1.2× 7 414
Daniel Abed‐Navandi Austria 11 51 0.2× 194 1.1× 104 1.1× 23 0.4× 43 0.8× 21 328
Tilic Ekin Germany 12 76 0.4× 241 1.4× 264 2.8× 18 0.3× 39 0.8× 36 367
Gert Helms Germany 8 83 0.4× 89 0.5× 30 0.3× 42 0.7× 56 1.1× 9 467

Countries citing papers authored by Ferry Siemensma

Since Specialization
Citations

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

Fields of papers citing papers by Ferry Siemensma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ferry Siemensma

This figure shows the co-authorship network connecting the top 25 collaborators of Ferry Siemensma. A scholar is included among the top collaborators of Ferry Siemensma 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 Ferry Siemensma. Ferry Siemensma 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.
Taylor, Bruce, Michaela C. Strüder‐Kypke, & Ferry Siemensma. (2025). A new species of testate amoeba, <i>Arcella prismatica</i> sp. nov. (Amoebozoa: Arcellinida), from peatlands in Ontario and Quebec, Canada. The Canadian Field-Naturalist. 138(1). 1–15. 1 indexed citations
2.
Holzmann, Maria & Ferry Siemensma. (2025). A new freshwater monothalamid (Rhizaria, Foraminifera) from the Pyrenees branching within a marine clade. European Journal of Protistology. 99. 126156–126156. 1 indexed citations
3.
Siemensma, Ferry, et al.. (2025). Two new freshwater foraminiferal species (SAR, Rhizaria) from Dinaric karst caves (southeastern Europe). European Journal of Protistology. 101. 126172–126172.
4.
Wanner, Manfred, et al.. (2024). Testate amoebae from the wetlands of the Phobjikha Valley of Bhutan, the Eastern Himalayas. European Journal of Protistology. 96. 126125–126125.
5.
Cano, Emilio, et al.. (2024). The voice of the little giants: Arcellinida testate amoebae in environmental DNA‐based bioindication, from taxonomy free to haplotypic level. Molecular Ecology Resources. 24(7). e13999–e13999. 3 indexed citations
6.
Dumack, Kenneth, Enrique Lara, Clément Duckert, et al.. (2024). It's time to consider the Arcellinida shell as a weapon. European Journal of Protistology. 92. 126051–126051. 7 indexed citations
7.
8.
9.
Siemensma, Ferry & Maria Holzmann. (2023). Novel contributions to the molecular and morphological diversity of freshwater monothalamid foraminifera: Description of six new species. European Journal of Protistology. 90. 126014–126014. 6 indexed citations
10.
Dumack, Kenneth, et al.. (2021). Transfer of the thecate amoebae Lecythium spinosum and Pamphagus armatus to Rhizaspis (Thecofilosea, Cercozoa, Rhizaria). European Journal of Protistology. 83. 125843–125843. 1 indexed citations
11.
Dumack, Kenneth, et al.. (2020). Molecular investigation of Phryganella acropodia Hertwig et Lesser, 1874 (Arcellinida, Amoebozoa). European Journal of Protistology. 75. 125707–125707. 10 indexed citations
12.
Dumack, Kenneth & Ferry Siemensma. (2020). Shell Colour in Cercozoa; a Simple Trait to Distinguish Thecofilosea from Imbricatea?. Protist. 171(2). 125718–125718. 6 indexed citations
13.
Siemensma, Ferry, et al.. (2020). Broad sampling of monothalamids (Rhizaria, Foraminifera) gives further insight into diversity of non-marine Foraminifera. European Journal of Protistology. 77. 125744–125744. 12 indexed citations
14.
Siemensma, Ferry, et al.. (2019). The Dancing Star: Reinvestigation of Artodiscus saltans (Variosea, Amoebozoa) Penard 1890. Protist. 170(4). 349–357. 4 indexed citations
15.
Siemensma, Ferry & Kenneth Dumack. (2019). SSU rDNA Phylogeny Indicates the Scale-lacking Trivalvulariida ord. nov. as a Sister Group to the Euglyphida (Cercozoa, Rhizaria). Protist. 171(1). 125701–125701. 4 indexed citations
16.
Dumack, Kenneth, Ferry Siemensma, & Michael Bonkowski. (2017). Rediscovery of the Testate Amoeba Genus Penardeugenia (Thaumatomonadida, Imbricatea). Protist. 169(1). 29–42. 12 indexed citations
17.
Siemensma, Ferry, et al.. (2017). Taxonomic revision of freshwater foraminifera with the description of two new agglutinated species and genera. European Journal of Protistology. 60. 28–44. 20 indexed citations
18.
Blandenier, Quentin, Enrique Lara, Edward A. D. Mitchell, et al.. (2016). NAD9/NAD7 (mitochondrial nicotinamide adenine dinucleotide dehydrogenase gene)—A new “Holy Grail” phylogenetic and DNA-barcoding marker for Arcellinida (Amoebozoa)?. European Journal of Protistology. 58. 175–186. 11 indexed citations
19.
Siemensma, Ferry, et al.. (1991). Nackte Rhizopoda und Heliozoea. G. Fischer eBooks. 2. 1–297. 72 indexed citations
20.
Siemensma, Ferry & R.M.M. Roijackers. (1988). The Genus Raphidiophrys (Actinopoda, Heliozoea): Scale Morphology and Species Distinctions. Archiv für Protistenkunde. 136(3). 237–248. 23 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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