Kaare Johnsen

1.8k total citations
29 papers, 1.4k citations indexed

About

Kaare Johnsen is a scholar working on Ecology, Molecular Biology and Pollution. According to data from OpenAlex, Kaare Johnsen has authored 29 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Ecology, 15 papers in Molecular Biology and 9 papers in Pollution. Recurrent topics in Kaare Johnsen's work include Microbial Community Ecology and Physiology (15 papers), Genomics and Phylogenetic Studies (9 papers) and Pesticide and Herbicide Environmental Studies (6 papers). Kaare Johnsen is often cited by papers focused on Microbial Community Ecology and Physiology (15 papers), Genomics and Phylogenetic Studies (9 papers) and Pesticide and Herbicide Environmental Studies (6 papers). Kaare Johnsen collaborates with scholars based in Denmark, Norway and United Kingdom. Kaare Johnsen's co-authors include Carsten Suhr Jacobsen, Vigdis Torsvik, Jan Sørensen, Preben Nielsen, Jens Aamand, Flemming Ekelund, Julia R. de Lipthay, Søren J. Sørensen, Sebastian Andersen and Ole Nybroe and has published in prestigious journals such as Applied and Environmental Microbiology, Soil Biology and Biochemistry and Environmental Toxicology and Chemistry.

In The Last Decade

Kaare Johnsen

29 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kaare Johnsen Denmark	22	483	464	459	382	176	29	1.4k
Saskia Gerards Netherlands	20	839 1.7×	482 1.0×	479 1.0×	376 1.0×	144 0.8×	31	1.7k
Pascal Simonet France	17	542 1.1×	508 1.1×	531 1.2×	555 1.5×	119 0.7×	30	1.6k
Jong-Ok Ka South Korea	24	445 0.9×	647 1.4×	636 1.4×	779 2.0×	361 2.1×	77	2.0k
Marcela A. Ferrero Argentina	23	436 0.9×	569 1.2×	364 0.8×	486 1.3×	235 1.3×	48	1.5k
Quanju Xiang China	22	477 1.0×	306 0.7×	312 0.7×	449 1.2×	104 0.6×	81	1.5k
Qiong Wang China	20	905 1.9×	318 0.7×	418 0.9×	470 1.2×	95 0.5×	80	1.7k
Maximino Manzanera Spain	27	759 1.6×	365 0.8×	510 1.1×	608 1.6×	91 0.5×	57	2.0k
Karine Laval France	19	595 1.2×	266 0.6×	304 0.7×	233 0.6×	81 0.5×	36	1.3k
Irene Kuiper Netherlands	15	904 1.9×	528 1.1×	343 0.7×	557 1.5×	127 0.7×	29	1.8k
Mette Haubjerg Nicolaisen Denmark	24	680 1.4×	705 1.5×	692 1.5×	460 1.2×	184 1.0×	56	2.1k

Countries citing papers authored by Kaare Johnsen

Since Specialization

Citations

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

Fields of papers citing papers by Kaare Johnsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kaare Johnsen

This figure shows the co-authorship network connecting the top 25 collaborators of Kaare Johnsen. A scholar is included among the top collaborators of Kaare Johnsen 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 Kaare Johnsen. Kaare Johnsen 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

Burmølle, Mette, Kaare Johnsen, Waleed Abu Al‐Soud, Lars Hestbjerg Hansen, & Søren J. Sørensen. (2009). The presence of embedded bacterial pure cultures in agar plates stimulate the culturability of soil bacteria. Journal of Microbiological Methods. 79(2). 166–173. 14 indexed citations

Bech, Tina B., Kaare Johnsen, Anders Dalsgaard, et al.. (2009). Transport and Distribution ofSalmonella entericaSerovar Typhimurium in Loamy and Sandy Soil Monoliths with Applied Liquid Manure. Applied and Environmental Microbiology. 76(3). 710–714. 38 indexed citations

Mølbak, Lars, Kaare Johnsen, Mette Boyé, et al.. (2007). The microbiota of pigs influenced by diet texture and severity of Lawsonia intracellularis infection. Veterinary Microbiology. 128(1-2). 96–107. 22 indexed citations

Lipthay, Julia R. de, Kaare Johnsen, Hans‐Jørgen Albrechtsen, Per Rosenberg, & Jens Aamand. (2004). Bacterial diversity and community structure of a sub-surface aquifer exposed to realistic low herbicide concentrations. FEMS Microbiology Ecology. 49(1). 59–69. 35 indexed citations

Lipthay, Julia R. de, et al.. (2004). Impact of DNA extraction method on bacterial community composition measured by denaturing gradient gel electrophoresis. Soil Biology and Biochemistry. 36(10). 1607–1614. 97 indexed citations

Binnerup, Svend Jørgen, et al.. (2003). Mercury Decreases Culturability of Pseudomonas frederiksbergensis JAJ 28 in Soil Microcosms. Current Microbiology. 47(2). 125–128. 2 indexed citations

Lipthay, Julia R. de, Nina Tuxen, Kaare Johnsen, et al.. (2003). In Situ Exposure to Low Herbicide Concentrations Affects Microbial Population Composition and Catabolic Gene Frequency in an Aerobic Shallow Aquifer. Applied and Environmental Microbiology. 69(1). 461–467. 56 indexed citations

Holtze, Maria S., Flemming Ekelund, Lasse Dam Rasmussen, Carsten Suhr Jacobsen, & Kaare Johnsen. (2003). Prey-predator dynamics in communities of culturable soil bacteria and protozoa: differential effects of mercury. Soil Biology and Biochemistry. 35(9). 1175–1181. 13 indexed citations

Larsen, Lise, et al.. (2002). Quantification of the atrazine-degrading Pseudomonas sp. strain ADP in aquifer sediment by quantitative competitive polymerase chain reaction. FEMS Microbiology Ecology. 41(3). 221–229. 36 indexed citations

10.

Sverdrup, Line Emilie, Flemming Ekelund, Paul Henning Krogh, Torben Nielsen, & Kaare Johnsen. (2002). Soil microbial toxicity of eight polycyclic aromatic compounds: Effects on nitrification, the genetic diversity of bacteria, and the total number of protozoans. Environmental Toxicology and Chemistry. 21(8). 1644–1650. 61 indexed citations

11.

Sverdrup, Line Emilie, Flemming Ekelund, Paul Henning Krogh, Torben Nielsen, & Kaare Johnsen. (2002). SOIL MICROBIAL TOXICITY OF EIGHT POLYCYCLIC AROMATIC COMPOUNDS: EFFECTS ON NITRIFICATION, THE GENETIC DIVERSITY OF BACTERIA, AND THE TOTAL NUMBER OF PROTOZOANS. Environmental Toxicology and Chemistry. 21(8). 1644–1644. 1 indexed citations

12.

Eriksen, Gunnar Sundstøl, Hans Pettersson, Kaare Johnsen, & Jan Erik Lindberg. (2002). Transformation of Trichothecenes in Ileal Digesta and Faeces from Pigs. Archiv für Tierernaehrung. 56(4). 263–274. 72 indexed citations

13.

Rasmussen, Lasse Dam, Flemming Ekelund, Lars Hestbjerg Hansen, Søren J. Sørensen, & Kaare Johnsen. (2001). Group-Specific PCR Primers to Amplify 24S a-Subunit rRNA Genes from Kinetoplastida (Protozoa) Used in Denaturing Gradient Gel Electrophoresis. Microbial Ecology. 42(2). 109–115. 28 indexed citations

14.

Johnsen, Kaare, et al.. (2001). Succession of Indigenous Pseudomonas spp. and Actinomycetes on Barley Roots Affected by the Antagonistic Strain Pseudomonas fluorescens DR54 and the Fungicide Imazalil. Applied and Environmental Microbiology. 67(3). 1147–1153. 45 indexed citations

15.

Johnsen, Kaare, et al.. (2001). Effects of fenpropimorph on bacteria and fungi during decomposition of barley roots. Soil Biology and Biochemistry. 33(11). 1517–1524. 33 indexed citations

16.

Johnsen, Kaare, Carsten Suhr Jacobsen, Vigdis Torsvik, & Jan Sørensen. (2001). Pesticide effects on bacterial diversity in agricultural soils - a review. Biology and Fertility of Soils. 33(6). 443–453. 271 indexed citations

17.

Bjørnlund, Lisa, Flemming Ekelund, Søren Christensen, et al.. (2000). Interactions between saprotrophic fungi, bacteria and protozoa on decomposing wheat roots in soil influenced by the fungicide fenpropimorph (Corbel®): a field study. Soil Biology and Biochemistry. 32(7). 967–975. 30 indexed citations

18.

Andersen, Søren, Kaare Johnsen, Jens Christian Sørensen, Preben Nielsen, & Carsten Suhr Jacobsen. (2000). Pseudomonas frederiksbergensis sp. nov., isolated from soil at a coal gasification site.. INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. 50(6). 1957–1964. 80 indexed citations

19.

Johnsen, Kaare & Preben Nielsen. (1999). Diversity ofPseudomonasstrains isolated with King's B and Gould's S1 agar determined by repetitive extragenic palindromic-polymerase chain reaction, 16S rDNA sequencing and Fourier transform infrared spectroscopy characterisation. FEMS Microbiology Letters. 173(1). 155–162. 69 indexed citations

20.

Johnsen, Kaare. (1999). Diversity of Pseudomonas strains isolated with King's B and Gould's S1 agar determined by repetitive extragenic palindromic-polymerase chain reaction, 16S rDNA sequencing and Fourier transform infrared spectroscopy characterisation. FEMS Microbiology Letters. 173(1). 155–162. 6 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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