N. H. G. Jacobsen

475 total citations
23 papers, 373 citations indexed

About

N. H. G. Jacobsen is a scholar working on Ecology, Evolution, Behavior and Systematics, Ecology and Global and Planetary Change. According to data from OpenAlex, N. H. G. Jacobsen has authored 23 papers receiving a total of 373 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Ecology, Evolution, Behavior and Systematics, 6 papers in Ecology and 6 papers in Global and Planetary Change. Recurrent topics in N. H. G. Jacobsen's work include Amphibian and Reptile Biology (6 papers), Lepidoptera: Biology and Taxonomy (4 papers) and Wildlife Ecology and Conservation (3 papers). N. H. G. Jacobsen is often cited by papers focused on Amphibian and Reptile Biology (6 papers), Lepidoptera: Biology and Taxonomy (4 papers) and Wildlife Ecology and Conservation (3 papers). N. H. G. Jacobsen collaborates with scholars based in Latvia, South Africa and Denmark. N. H. G. Jacobsen's co-authors include Rikke Bagger Jørgensen, Roland von Bothmer, Claus Baden, Ib Linde‐Laursen, Mary E. Barkworth, Pinarosa Avato, Ulla Wagner Smitt, C. J. Kleynhans, Aaron M. Bauer and Todd R. Jackman and has published in prestigious journals such as Taxon, Zootaxa and Water SA.

In The Last Decade

N. H. G. Jacobsen

21 papers receiving 335 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
N. H. G. Jacobsen Latvia 8 250 92 85 78 64 23 373
Anna M. Roschanski Germany 8 142 0.6× 54 0.6× 145 1.7× 56 0.7× 34 0.5× 9 285
Nicholas D. Levsen United States 8 149 0.6× 159 1.7× 215 2.5× 138 1.8× 43 0.7× 10 432
Valérie Léger France 5 210 0.8× 36 0.4× 159 1.9× 119 1.5× 39 0.6× 6 375
Steve Schoenig United States 12 220 0.9× 204 2.2× 54 0.6× 60 0.8× 18 0.3× 16 419
Ditte C. Olrik Denmark 7 105 0.4× 53 0.6× 56 0.7× 47 0.6× 37 0.6× 11 221
Philip H. Smith United Kingdom 11 287 1.1× 25 0.3× 65 0.8× 64 0.8× 28 0.4× 25 347
Karolina Sobierajska Poland 13 208 0.8× 143 1.6× 91 1.1× 60 0.8× 24 0.4× 20 371
Sven Snogerup Sweden 11 401 1.6× 235 2.6× 86 1.0× 186 2.4× 20 0.3× 24 551
T. M. Hardig United States 8 190 0.8× 246 2.7× 95 1.1× 138 1.8× 20 0.3× 11 396
Smadar Ezrati Israel 8 344 1.4× 73 0.8× 94 1.1× 84 1.1× 33 0.5× 11 434

Countries citing papers authored by N. H. G. Jacobsen

Since Specialization
Citations

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

Fields of papers citing papers by N. H. G. Jacobsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N. H. G. Jacobsen. 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 N. H. G. Jacobsen. The network helps show where N. H. G. Jacobsen may publish in the future.

Co-authorship network of co-authors of N. H. G. Jacobsen

This figure shows the co-authorship network connecting the top 25 collaborators of N. H. G. Jacobsen. A scholar is included among the top collaborators of N. H. G. Jacobsen 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 N. H. G. Jacobsen. N. H. G. Jacobsen 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
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Jacobsen, N. H. G.. (1994). ThePlatysaurus intermedinscomplex (Sauria: Cordylidae) in the Transvaal, South Africa, with descriptions of three new taxa. South African Journal of Zoology. 29(2). 132–143. 15 indexed citations
5.
Jacobsen, N. H. G. & C. J. Kleynhans. (1993). The importance of weirs as refugia for hippopotami and crocodiles in the Limpopo River, South Africa. Water SA. 19(4). 301–306. 10 indexed citations
6.
Barkworth, Mary E., Roland von Bothmer, N. H. G. Jacobsen, et al.. (1992). An Ecogeographical Study of the Genus Hordeum. Taxon. 41(2). 395–395. 105 indexed citations
7.
Jacobsen, N. H. G.. (1992). FLAT GECKOS (GENUSAFROEDURA)IN THE TRANSVAAL. The Journal of the Herpetological Association of Africa. 40(1). 22–25. 5 indexed citations
8.
Jacobsen, N. H. G.. (1992). New Lygodactylus taxa (Reptilia: Gekkonidae) from the Transvaal. Biodiversity Heritage Library (Smithsonian Institution). 43(4). 527–542. 7 indexed citations
9.
Jacobsen, N. H. G.. (1992). THE STATUS OF AGAMA ACULEATA ARMATA PETERS 1854, (REPTILIA: AGAMIDAE). The Journal of the Herpetological Association of Africa. 41(1). 30–34. 1 indexed citations
10.
Avato, Pinarosa, N. H. G. Jacobsen, & Ulla Wagner Smitt. (1992). Chemotaxonomy ofThapsia maximaMiller. Constituents of the Essential Oil of the Fruits. Journal of Essential Oil Research. 4(5). 467–473. 19 indexed citations
11.
Jacobsen, N. H. G., et al.. (1989). THE GENUSPLATYSAURUSA. SMITH 1844 IN THE TRANSVAAL. The Journal of the Herpetological Association of Africa. 36(1). 51–63. 10 indexed citations
12.
Jacobsen, N. H. G., et al.. (1989). Comparison of the Pteridophyte Floras of Southern and Eastern Africa, with Special Reference to High-Altitude Species. Bulletin du Jardin botanique national de Belgique / Bulletin van de National Plantentuin van België. 59(3/4). 261–261. 15 indexed citations
13.
Jacobsen, N. H. G., et al.. (1989). CHROMOSOMAL STUDIES OF RELATIONSHIPS IN GEKKONIDAE, CHAMAELEONIDAE AND SCINCIDAE IN SOUTH AFRICA. The Journal of the Herpetological Association of Africa. 36(1). 77–77. 3 indexed citations
14.
Broadley, Donald G., N. H. G. Jacobsen, Michael F. Bates, et al.. (1988). GEOGRAPHICAL DISTRIBUTION. The Journal of the Herpetological Association of Africa. 34(1). 50–50. 1 indexed citations
15.
Jacobsen, N. H. G.. (1987). A new subspecies ofTyphlosaurus lineatusBoulenger 1887 (Reptilia: Scincidae) from Venda, Southern Africa. South African Journal of Zoology. 22(4). 318–320. 3 indexed citations
16.
Jacobsen, N. H. G.. (1987). NOTES ON REPRODUCTION INICHNOTROPIS SQUAMULOSAAND INTERSPECIFIC COMPETITION WITHI. CAPENSIS(REPTILIA, LACERTIDAE) IN THE TRANSVAAL. The Journal of the Herpetological Association of Africa. 33(1). 13–17. 3 indexed citations
17.
Jacobsen, N. H. G.. (1979). HERPETOLOGY AND DEPARTMENTS OF NATURE CONSERVATION. The Journal of the Herpetological Association of Africa. 21(1). 1–2. 1 indexed citations
18.
Jacobsen, N. H. G.. (1978). COLLOQUIAL NAMES FOR SOUTHERN AFRICAN REPTILES AND AMPHIBIANS. The Journal of the Herpetological Association of Africa. 18(1). 7–13. 2 indexed citations
19.
Jacobsen, N. H. G.. (1978). An Investigation Into the Ecology and Productivity of Epiphytic Mosses. Journal of South African Botany. 44(3). 297–312. 5 indexed citations
20.
Jacobsen, N. H. G.. (1972). SOME NOTES ON THE BIOLOGY AND BEHAVIOUR OF THE TRANSVAAL GIRDLED LIZARD (CORDYLUS VITTIFER) IN CAPTIVITY. The Journal of the Herpetological Association of Africa. 9(1). 35–37. 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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