Marja Niemi

1.8k total citations
63 papers, 1.5k citations indexed

About

Marja Niemi is a scholar working on Materials Chemistry, Ecology and Organic Chemistry. According to data from OpenAlex, Marja Niemi has authored 63 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Materials Chemistry, 21 papers in Ecology and 14 papers in Organic Chemistry. Recurrent topics in Marja Niemi's work include Marine animal studies overview (21 papers), Porphyrin and Phthalocyanine Chemistry (19 papers) and Photochemistry and Electron Transfer Studies (13 papers). Marja Niemi is often cited by papers focused on Marine animal studies overview (21 papers), Porphyrin and Phthalocyanine Chemistry (19 papers) and Photochemistry and Electron Transfer Studies (13 papers). Marja Niemi collaborates with scholars based in Finland, United States and Japan. Marja Niemi's co-authors include Helge Lemmetyinen, Nikolai V. Tkachenko, Mervi Kunnasranta, Alexander Efimov, Miina Auttila, Jihane Hankache, Oliver S. Wenger, Tomokazu Umeyama, Hiroaki Iijima and Yoshihiro Matano and has published in prestigious journals such as Journal of the American Chemical Society, PLoS ONE and Diabetes Care.

In The Last Decade

Marja Niemi

59 papers receiving 1.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Marja Niemi Finland 22 708 308 249 240 230 63 1.5k
Volker H. Schmitt Germany 19 156 0.2× 105 0.3× 58 0.2× 16 0.1× 59 0.3× 105 1.4k
Yuejian Wang China 26 828 1.2× 49 0.2× 310 1.2× 66 0.3× 35 0.2× 130 2.4k
Ji‐Tao Wang China 23 466 0.7× 612 2.0× 121 0.5× 28 0.1× 58 0.3× 113 2.0k
W. Kühn Germany 21 684 1.0× 100 0.3× 274 1.1× 88 0.4× 14 0.1× 73 1.6k
Stephen J. Lee United States 29 147 0.2× 1.2k 3.7× 151 0.6× 40 0.2× 37 0.2× 88 2.4k
Wolfgang Paulus Germany 22 317 0.4× 333 1.1× 329 1.3× 6 0.0× 14 0.1× 75 1.9k
Werner Schmidt Germany 26 342 0.5× 52 0.2× 84 0.3× 33 0.1× 25 0.1× 162 2.1k
Stephen B. Hall United States 33 116 0.2× 374 1.2× 171 0.7× 96 0.4× 68 0.3× 83 3.4k
Hiroshi NISHIDA Japan 16 109 0.2× 294 1.0× 93 0.4× 13 0.1× 183 0.8× 117 1.3k
Brendan O’Malley United Kingdom 15 389 0.5× 96 0.3× 39 0.2× 10 0.0× 12 0.1× 21 1.1k

Countries citing papers authored by Marja Niemi

Since Specialization
Citations

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

Fields of papers citing papers by Marja Niemi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Marja Niemi

This figure shows the co-authorship network connecting the top 25 collaborators of Marja Niemi. A scholar is included among the top collaborators of Marja Niemi 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 Marja Niemi. Marja Niemi 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.
2.
Niemi, Marja, et al.. (2025). Linking ringed seal foraging behaviour to environmental variability. Movement Ecology. 13(1). 31–31.
3.
Niemi, Marja, et al.. (2025). Aquatic vocalization activity indicates the timing of the mating season of Saimaa ringed seals. Marine Mammal Science. 41(3). 2 indexed citations
4.
Kunnasranta, Mervi, et al.. (2024). Mercury exposure in ringed seals (Pusa hispida saimensis) in Lake Saimaa, Finland, and the placenta as a possible non-invasive biomonitoring tool. Environmental Science and Pollution Research. 31(47). 57720–57732.
5.
Jounela, Pekka, et al.. (2024). Effects of fishing restrictions on the recovery of the endangered Saimaa ringed seal (Pusa hispida saimensis) population. PLoS ONE. 19(12). e0311255–e0311255. 2 indexed citations
6.
Niemi, Marja, et al.. (2023). Seasonal changes in diel haul‐out patterns of a lacustrine ringed seal (Pusa hispida saimensis). Ecology and Evolution. 13(7). e10264–e10264. 4 indexed citations
7.
Sundell, Tarja, Juhana Kammonen, Mervi Kunnasranta, et al.. (2023). Genomic evidence uncovers inbreeding and supports translocations in rescuing the genetic diversity of a landlocked seal population. Conservation Genetics. 24(2). 155–165. 5 indexed citations
8.
Kunnasranta, Mervi, Marja Niemi, & Miina Auttila. (2022). Developing artificial nest boxes for a large aquatic mammal. Aquatic Conservation Marine and Freshwater Ecosystems. 32(8). 1365–1371. 4 indexed citations
9.
Niemi, Marja, et al.. (2019). Winter behavior of Saimaa ringed seals: Non-overlapping core areas as indicators of avoidance in breeding females. PLoS ONE. 14(1). e0210266–e0210266. 15 indexed citations
10.
Niemi, Marja, et al.. (2015). Identifying foraging habitats of Baltic ringed seals using movement data. Movement Ecology. 3(1). 33–33. 26 indexed citations
11.
Rotas, Georgios, Marja Niemi, Nikolai V. Tkachenko, et al.. (2014). Organic–Inorganic Azafullerene‐Gold C59N‐Au Nanohybrid: Synthesis, Characterization, and Properties. Chemistry - A European Journal. 20(45). 14729–14735. 3 indexed citations
12.
Wondraczek, Holger, et al.. (2013). Studies on the structure of coumarin-modified dextran nanoparticles by fluorescence spectroscopy. Carbohydrate Polymers. 97(1). 45–51. 6 indexed citations
13.
Niemi, Marja, et al.. (2013). Supramolecular assemblies of bay-substituted perylene diimides in solution and on a solid substrate. Organic & Biomolecular Chemistry. 11(37). 6397–6397. 6 indexed citations
14.
Winell, Klas, Arto Pietilä, Marja Niemi, Antti Reunanen, & Veikko Salomaa. (2011). Trends in population attributable fraction of acute coronary syndrome and ischaemic stroke due to diabetes in Finland. Diabetologia. 54(11). 2789–2794. 7 indexed citations
15.
D’Souza, Francis, Channa A. Wijesinghe, Mohamed E. El‐Khouly, et al.. (2011). Ultrafast excitation transfer and charge stabilization in a newly assembled photosynthetic antenna-reaction center mimic composed of boron dipyrrin, zinc porphyrin and fullerene. Physical Chemistry Chemical Physics. 13(40). 18168–18168. 47 indexed citations
16.
Lemmetyinen, Helge, Nikolai V. Tkachenko, Alexander Efimov, & Marja Niemi. (2010). Photoinduced intra- and intermolecular electron transfer in solutions and in solid organized molecular assemblies. Physical Chemistry Chemical Physics. 13(2). 397–412. 34 indexed citations
17.
Lemmetyinen, Helge, Tatu Kumpulainen, Marja Niemi, et al.. (2010). Independence and inverted dependence on temperature of rates of photoinduced electron transfer in double-linked phthalocyanine-fullerene dyads. Photochemical & Photobiological Sciences. 9(7). 949–959. 12 indexed citations
18.
Auvinen, Eeva, et al.. (2005). High prevalence of HPV among female students in Finland. Scandinavian Journal of Infectious Diseases. 37(11-12). 873–876. 25 indexed citations
19.
Castrén, Johanna, Marja Niemi, & Irma Virjo. (2005). Use of email for patient communication in student health care: a cross-sectional study. BMC Medical Informatics and Decision Making. 5(1). 2–2. 18 indexed citations
20.
Keinänen-Kiukaanniemi, Sirkka & Marja Niemi. (1994). Detection of retinopathy by non-mydriatic fundus photography in diabetics treated with oral hypoglycaemic agents or diet. Scandinavian Journal of Primary Health Care. 12(1). 32–38. 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.

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