Marja E. Koivunen

952 total citations
23 papers, 660 citations indexed

About

Marja E. Koivunen is a scholar working on Plant Science, Molecular Biology and Pollution. According to data from OpenAlex, Marja E. Koivunen has authored 23 papers receiving a total of 660 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Plant Science, 5 papers in Molecular Biology and 4 papers in Pollution. Recurrent topics in Marja E. Koivunen's work include Legume Nitrogen Fixing Symbiosis (5 papers), Advanced biosensing and bioanalysis techniques (4 papers) and Plant nutrient uptake and metabolism (3 papers). Marja E. Koivunen is often cited by papers focused on Legume Nitrogen Fixing Symbiosis (5 papers), Advanced biosensing and bioanalysis techniques (4 papers) and Plant nutrient uptake and metabolism (3 papers). Marja E. Koivunen collaborates with scholars based in United States, Canada and Czechia. Marja E. Koivunen's co-authors include Bruce D. Hammock, Richard L. Krogsrud, William R. Horwáth, Ian M. Kennedy, Bing Guo, Jun Feng, Guomin Shan, Ángel Maquieira, Shirley J. Gee and Pamela G. Marrone and has published in prestigious journals such as Analytical Chemistry, The Science of The Total Environment and Applied and Environmental Microbiology.

In The Last Decade

Marja E. Koivunen

23 papers receiving 622 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Marja E. Koivunen United States	15	254	162	109	98	64	23	660
Ramazan Ali Khavari‐Nejad Iran	19	523 2.1×	254 1.6×	146 1.3×	96 1.0×	91 1.4×	70	1.1k
Sun China	13	156 0.6×	221 1.4×	72 0.7×	58 0.6×	48 0.8×	105	720
Ulhas Sopanrao Kadam South Korea	21	481 1.9×	500 3.1×	74 0.7×	190 1.9×	109 1.7×	42	1.1k
Honghong Li China	14	114 0.4×	199 1.2×	42 0.4×	46 0.5×	173 2.7×	50	653
Camilla Fagorzi Italy	16	285 1.1×	263 1.6×	46 0.4×	60 0.6×	69 1.1×	39	711
A. S. Sidhu India	13	239 0.9×	135 0.8×	182 1.7×	74 0.8×	19 0.3×	95	615
Leila Pishkar Iran	15	388 1.5×	196 1.2×	232 2.1×	57 0.6×	96 1.5×	35	815
Shuqi Zhao China	18	422 1.7×	191 1.2×	177 1.6×	50 0.5×	28 0.4×	41	948
Hansruedi Felix Switzerland	10	344 1.4×	343 2.1×	30 0.3×	56 0.6×	274 4.3×	20	804

Countries citing papers authored by Marja E. Koivunen

Since Specialization

Citations

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

Fields of papers citing papers by Marja E. Koivunen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Marja E. Koivunen

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

All Works

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20 of 20 papers shown

Koivunen, Marja E.. (2023). Uses of thaxtomin and thaxtomin compositions as herbicides. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 1 indexed citations

Leggett, Mary, et al.. (2014). Maize yield response to a phosphorus-solubilizing microbial inoculant in field trials. The Journal of Agricultural Science. 153(8). 1464–1478. 43 indexed citations

Córdova-Kreylos, Ana Lucía, et al.. (2013). Isolation and Characterization of Burkholderia rinojensis sp. nov., a Non-Burkholderia cepacia Complex Soil Bacterium with Insecticidal and Miticidal Activities. Applied and Environmental Microbiology. 79(24). 7669–7678. 44 indexed citations

Huang, Huazhang, et al.. (2010). Phytotoxicity of Sarmentine Isolated from Long Pepper (Piper longum) Fruit. Journal of Agricultural and Food Chemistry. 58(18). 9994–10000. 43 indexed citations

Koivunen, Marja E., Leónides Fernández, Ratnakar N. Asolkar, et al.. (2009). Development of a new microbial insecticide based on Chromobacterium subtsugae.. 45. 183–186. 5 indexed citations

Koivunen, Marja E., et al.. (2008). Optimization and validation of a California halibut environmental estrogen bioassay using a heterologous ELISA. The Science of The Total Environment. 407(2). 953–961. 10 indexed citations

Lee, Kiyoung, Eun‐Kee Park, Maria T. Stoecklin‐Marois, et al.. (2008). Occupational paraquat exposure of agricultural workers in large Costa Rican farms. International Archives of Occupational and Environmental Health. 82(4). 455–462. 31 indexed citations

Peltola, Rainer, et al.. (2006). Nitrification in polluted soil fertilized with fast- and slow-releasing nitrogen: A case study at a refinery landfarming site. Environmental Pollution. 143(2). 247–253. 16 indexed citations

Koivunen, Marja E., Katja Dettmer, Roel Vermeulen, et al.. (2006). Improved methods for urinary atrazine mercapturate analysis—Assessment of an enzyme-linked immunosorbent assay (ELISA) and a novel liquid chromatography–mass spectrometry (LC–MS) method utilizing online solid phase extraction (SPE). Analytica Chimica Acta. 572(2). 180–189. 18 indexed citations

10.

Koivunen, Marja E. & Richard L. Krogsrud. (2006). Principles of Immunochemical Techniques Used in Clinical Laboratories. Laboratory Medicine. 37(8). 490–497. 56 indexed citations

11.

Koivunen, Marja E. & Richard L. Krogsrud. (2006). Principles of Immunochemical Techniques Used in Clinical Laboratories. Laboratory Medicine. 37(8). 490–497. 10 indexed citations

12.

Koivunen, Marja E., et al.. (2005). Application of an Enzyme-Linked Immunosorbent Assay for the Analysis of Paraquat in Human-Exposure Samples. Archives of Environmental Contamination and Toxicology. 48(2). 184–190. 27 indexed citations

13.

Koivunen, Marja E. & William R. Horwáth. (2005). Methylene urea as a slow-release nitrogen source for processing tomatoes. Nutrient Cycling in Agroecosystems. 71(2). 177–190. 21 indexed citations

14.

Koivunen, Marja E., et al.. (2005). Application of europium(III) chelate-dyed nanoparticle labels in a competitive atrazine fluoroimmunoassay on an ITO waveguide. Biosensors and Bioelectronics. 21(7). 1077–1085. 36 indexed citations

15.

Koivunen, Marja E., Christophe Morisseau, William R. Horwáth, & Bruce D. Hammock. (2004). Isolation of a strain of Agrobacterium tumefaciens (Rhizobium radiobacter) utilizing methylene urea (ureaformaldehyde) as nitrogen source. Canadian Journal of Microbiology. 50(3). 167–174. 19 indexed citations

16.

Koivunen, Marja E. & William R. Horwáth. (2004). Effect of management history and temperature on the mineralization of methylene urea in soil. Nutrient Cycling in Agroecosystems. 68(1). 25–35. 17 indexed citations

17.

Koivunen, Marja E., Christophe Morisseau, John W. Newman, William R. Horwáth, & Bruce D. Hammock. (2003). Purification and characterization of a methylene urea-hydrolyzing enzyme from Rhizobium radiobacter (Agrobacterium tumefaciens). Soil Biology and Biochemistry. 35(11). 1433–1442. 4 indexed citations

18.

Feng, Jun, Guomin Shan, Ángel Maquieira, et al.. (2003). Functionalized Europium Oxide Nanoparticles Used as a Fluorescent Label in an Immunoassay for Atrazine. Analytical Chemistry. 75(19). 5282–5286. 132 indexed citations

19.

Rahn, C.R., Stefaan De Neve, B. H. Slicher van Bath, et al.. (2001). A COMPARISON OF FERTILISER RECOMMENDATION SYSTEMS FOR CAULIFLOWERS IN EUROPE. Acta Horticulturae. 39–45. 2 indexed citations

20.

Koivunen, Marja E., et al.. (1990). Mobilization of soil phosphorus as induced by urea hydrolysis.. 204–209. 4 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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