Ib Johnsen

962 total citations
28 papers, 682 citations indexed

About

Ib Johnsen is a scholar working on Plant Science, Ecology, Evolution, Behavior and Systematics and Ecology. According to data from OpenAlex, Ib Johnsen has authored 28 papers receiving a total of 682 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Plant Science, 17 papers in Ecology, Evolution, Behavior and Systematics and 7 papers in Ecology. Recurrent topics in Ib Johnsen's work include Botany and Plant Ecology Studies (17 papers), Lichen and fungal ecology (15 papers) and Ecology and Vegetation Dynamics Studies (5 papers). Ib Johnsen is often cited by papers focused on Botany and Plant Ecology Studies (17 papers), Lichen and fungal ecology (15 papers) and Ecology and Vegetation Dynamics Studies (5 papers). Ib Johnsen collaborates with scholars based in Denmark, Norway and United States. Ib Johnsen's co-authors include M. F. Hovmand, Torben Riis‐Nielsen, L. Rasmussen, Ulrik Søchting, Анна Шевцова, Morten Tune Strandberg, Hanne Lakkenborg Kristensen, Anders Michelsen, Beate Strandberg and Marie‐Charlotte Nilsson and has published in prestigious journals such as Environmental Pollution, Cellular and Molecular Life Sciences and Oikos.

In The Last Decade

Ib Johnsen

26 papers receiving 610 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ib Johnsen Denmark 13 263 233 175 162 147 28 682
Harvey L. Ragsdale United States 13 99 0.4× 137 0.6× 94 0.5× 85 0.5× 111 0.8× 24 562
Fabius LeBlanc France 20 670 2.5× 586 2.5× 109 0.6× 76 0.5× 169 1.1× 29 995
C. Barghigiani Spain 23 305 1.2× 121 0.5× 513 2.9× 117 0.7× 51 0.3× 46 1.1k
U. Schiewer Germany 15 66 0.3× 126 0.5× 65 0.4× 282 1.7× 34 0.2× 49 808
I. Kuleff Bulgaria 18 80 0.3× 121 0.5× 198 1.1× 41 0.3× 17 0.1× 63 808
D. H. Brown United Kingdom 21 1.3k 4.9× 823 3.5× 401 2.3× 319 2.0× 134 0.9× 43 1.6k
Maria Olech Poland 17 544 2.1× 239 1.0× 36 0.2× 378 2.3× 203 1.4× 74 902
R. W. L. Kimber Australia 16 27 0.1× 142 0.6× 35 0.2× 168 1.0× 214 1.5× 32 686
K. J. Puckett Canada 15 720 2.7× 575 2.5× 382 2.2× 86 0.5× 190 1.3× 26 1.1k
Anne S. Palmer Australia 22 89 0.3× 126 0.5× 208 1.2× 631 3.9× 656 4.5× 32 1.6k

Countries citing papers authored by Ib Johnsen

Since Specialization
Citations

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

Fields of papers citing papers by Ib Johnsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ib Johnsen

This figure shows the co-authorship network connecting the top 25 collaborators of Ib Johnsen. A scholar is included among the top collaborators of Ib 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 Ib Johnsen. Ib Johnsen 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.
Andresen, Louise C., et al.. (2012). The wild flora biodiversity in pesticide free bufferzones along old hedgerows.. PubMed. 33(3). 565–72. 2 indexed citations
2.
Sigsgaard, Lene, et al.. (2009). Buffer zones for biodiversity of plants and arthropods: is there a compromise on width?. Research at the University of Copenhagen (University of Copenhagen). 3 indexed citations
3.
Hovmand, M. F., Sven Poul Nielsen, & Ib Johnsen. (2008). Root uptake of lead by Norway spruce grown on 210Pb spiked soils. Environmental Pollution. 157(2). 404–409. 48 indexed citations
4.
Hovmand, M. F., et al.. (2008). Atmospheric heavy metal deposition accumulated in rural forest soils of southern Scandinavia. Environmental Pollution. 155(3). 537–541. 71 indexed citations
5.
Esbjerg, P., et al.. (2003). Flora and Fauna Changes During Conversion from Conventional to Organic Farming. Research at the University of Copenhagen (University of Copenhagen). 5 indexed citations
6.
Christensen, Steen & Ib Johnsen. (2001). The lichen-rich coastal heath vegetation on the isle of Anholt, Denmark — conservation and management. Journal of Coastal Conservation. 7(1). 13–22. 12 indexed citations
7.
Christensen, Steen & Ib Johnsen. (2001). The lichen-rich coastal heath vegetation on the isle of Anholt, Denmark — description, history and development. Journal of Coastal Conservation. 7(1). 1–12. 19 indexed citations
8.
Tybirk, Knud, Marie‐Charlotte Nilsson, Anders Michelsen, et al.. (2000). NordicEmpetrumDominated Ecosystems: Function and Susceptibility to Environmental Changes. AMBIO. 29(2). 90–97. 111 indexed citations
9.
Tybirk, Knud, Marie‐Charlotte Nilsson, Anders Michelsen, et al.. (2000). Nordic Empetrum Dominated Ecosystems: Function and Susceptibility to Environmental Changes. AMBIO. 29(2). 90–90. 94 indexed citations
10.
Johnsen, Ib, et al.. (1998). Environment news, 33: Ecosystem vulnerability to climate change in Greenland and the Faroe Islands. 2 indexed citations
11.
Heide‐Jørgensen, Henning S. & Ib Johnsen. (1993). Indications of UV-B sensitivity in the lichen Cladonia mitis. Research at the University of Copenhagen (University of Copenhagen). 285–288. 1 indexed citations
12.
Johnsen, Ib. (1986). The biological indication of SO2. Cellular and Molecular Life Sciences. 42(5). 503–507. 1 indexed citations
13.
Johnsen, Ib, et al.. (1983). Heavy metal uptake in transplanted and in situ yarrow (Achillea millefolium) and epiphytic cryptogams at rural, urban and industrial localities in Denmark. Environmental Monitoring and Assessment. 3(1). 13–22. 4 indexed citations
14.
Johnsen, Ib. (1981). Heavy metal deposition on plants in relation to immission and bulk precipitation.. Silva Fennica. 15(4). 4 indexed citations
15.
Søchting, Ulrik & Ib Johnsen. (1978). Lichen transplants as biological indicators of SO2 air pollution in Copenhagen. Bulletin of Environmental Contamination and Toxicology. 19(1). 1–7. 5 indexed citations
16.
Andersen, Allan R., M. F. Hovmand, & Ib Johnsen. (1978). Atmospheric heavy metal deposition in the Copenhagen area. Environmental Pollution (1970). 17(2). 133–151. 54 indexed citations
17.
Johnsen, Ib & L. Rasmussen. (1977). Retrospective Study (1944-1976) of Heavy Metals in the Epiphyte Pterogonium gracile Collected from One Phorophyte. The Bryologist. 80(4). 625–625. 20 indexed citations
18.
Rasmussen, L. & Ib Johnsen. (1976). Uptake of Minerals, Particularly Metals, by Epiphytic Hypnum Cupressiforme. Oikos. 27(3). 483–483. 37 indexed citations
19.
Johnsen, Ib & Ulrik Søchting. (1976). Distribution of Cryptogamic Epiphytes in a Danish City in Relation to Air Pollution and Bark Properties. The Bryologist. 79(1). 86–86. 6 indexed citations
20.
Christensen, D.H., Ib Johnsen, P. Klaboe, & Else Kloster‐Jensen. (1969). Far infrared spectra and thermodynamic functions of some halogeno cyanoacetylenes and monohalogeno diacetylenes. Spectrochimica Acta Part A Molecular Spectroscopy. 25(9). 1569–1576. 19 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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