Jan T. Lifjeld

9.5k total citations
201 papers, 7.7k citations indexed

About

Jan T. Lifjeld is a scholar working on Ecology, Evolution, Behavior and Systematics, Ecology and Genetics. According to data from OpenAlex, Jan T. Lifjeld has authored 201 papers receiving a total of 7.7k indexed citations (citations by other indexed papers that have themselves been cited), including 162 papers in Ecology, Evolution, Behavior and Systematics, 143 papers in Ecology and 61 papers in Genetics. Recurrent topics in Jan T. Lifjeld's work include Animal Behavior and Reproduction (153 papers), Avian ecology and behavior (117 papers) and Plant and animal studies (88 papers). Jan T. Lifjeld is often cited by papers focused on Animal Behavior and Reproduction (153 papers), Avian ecology and behavior (117 papers) and Plant and animal studies (88 papers). Jan T. Lifjeld collaborates with scholars based in Norway, United States and Canada. Jan T. Lifjeld's co-authors include Tore Slagsvold, Arild Johnsen, Raleigh J. Robertson, Oddmund Kleven, Peter O. Dunn, Terje Laskemoen, Linda A. Whittingham, Frode Fossøy, Bart Kempenaers and Kaspar Delhey and has published in prestigious journals such as Nature, PLoS ONE and Ecology.

In The Last Decade

Jan T. Lifjeld

198 papers receiving 7.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jan T. Lifjeld Norway 49 6.3k 5.0k 1.8k 588 578 201 7.7k
Alexander V. Badyaev United States 49 5.1k 0.8× 3.5k 0.7× 1.7k 0.9× 503 0.9× 583 1.0× 130 7.6k
Linda A. Whittingham United States 45 4.2k 0.7× 3.1k 0.6× 1.1k 0.6× 492 0.8× 434 0.8× 121 5.5k
Jan Komdeur Netherlands 55 8.2k 1.3× 6.5k 1.3× 2.1k 1.2× 891 1.5× 856 1.5× 311 11.3k
Simon C. Griffith Australia 49 7.4k 1.2× 5.4k 1.1× 2.1k 1.2× 486 0.8× 1.4k 2.5× 249 9.5k
Peter O. Dunn United States 54 4.9k 0.8× 4.3k 0.9× 1.5k 0.8× 522 0.9× 495 0.9× 139 7.3k
Richard Griffiths United Kingdom 35 3.7k 0.6× 4.4k 0.9× 1.3k 0.7× 785 1.3× 421 0.7× 82 6.3k
Alexandre Roulin Switzerland 55 6.6k 1.1× 4.3k 0.9× 1.4k 0.8× 918 1.6× 524 0.9× 268 9.6k
Ben J. Hatchwell United Kingdom 49 5.4k 0.9× 4.9k 1.0× 1.2k 0.7× 488 0.8× 852 1.5× 150 7.6k
Sievert Rohwer United States 50 4.6k 0.7× 4.6k 0.9× 2.1k 1.2× 545 0.9× 626 1.1× 168 7.5k
Kees van Oers Netherlands 41 4.6k 0.7× 2.5k 0.5× 1.3k 0.7× 363 0.6× 1.0k 1.7× 134 6.5k

Countries citing papers authored by Jan T. Lifjeld

Since Specialization
Citations

This map shows the geographic impact of Jan T. Lifjeld'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 Jan T. Lifjeld with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jan T. Lifjeld more than expected).

Fields of papers citing papers by Jan T. Lifjeld

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jan T. Lifjeld. 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 Jan T. Lifjeld. The network helps show where Jan T. Lifjeld may publish in the future.

Co-authorship network of co-authors of Jan T. Lifjeld

This figure shows the co-authorship network connecting the top 25 collaborators of Jan T. Lifjeld. A scholar is included among the top collaborators of Jan T. Lifjeld 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 Jan T. Lifjeld. Jan T. Lifjeld 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.
Rowe, Melissah, et al.. (2025). Independent evolution of atypical sperm morphology in a passerine bird. Journal of Evolutionary Biology. 38(10). 1373–1386.
2.
Lifjeld, Jan T., et al.. (2023). Rapid sperm length divergence in a polygynandrous passerine: a mechanism of cryptic speciation?. Evolution. 77(11). 2352–2364. 3 indexed citations
3.
Cramer, Emily R. A., et al.. (2022). Selection on sperm size in response to promiscuity and variation in female sperm storage organs. Journal of Evolutionary Biology. 36(1). 131–143. 8 indexed citations
4.
Cramer, Emily R. A., Eduardo García‐del‐Rey, Lars Erik Johannessen, et al.. (2021). Longer Sperm Swim More Slowly in the Canary Islands Chiffchaff. Cells. 10(6). 1358–1358. 7 indexed citations
5.
Cramer, Emily R. A., Melissah Rowe, Fabrice Eroukhmanoff, et al.. (2019). Measuring sperm swimming performance in birds: effects of dilution, suspension medium, mechanical agitation, and sperm number. Journal für Ornithologie. 160(4). 1053–1063. 7 indexed citations
6.
Rowe, Melissah, et al.. (2015). Subspecific variation in sperm morphology and performance in the Long-tailed Finch (Poephila acuticauda). Avian Research. 6(1). 23 indexed citations
7.
Cramer, Emily R. A., Terje Laskemoen, Oddmund Kleven, & Jan T. Lifjeld. (2012). Sperm length variation in House Wrens Troglodytes aedon. Journal für Ornithologie. 154(1). 129–138. 27 indexed citations
8.
Anmarkrud, Jarl Andreas, Oddmund Kleven, Donald Blomqvist, et al.. (2011). Factors affecting germline mutations in a hypervariable microsatellite: A comparative analysis of six species of swallows (Aves: Hirundinidae). Mutation research. Fundamental and molecular mechanisms of mutagenesis. 708(1-2). 37–43. 10 indexed citations
9.
Lifjeld, Jan T., Terje Laskemoen, Oddmund Kleven, Tomáš Albrecht, & Raleigh J. Robertson. (2010). Sperm Length Variation as a Predictor of Extrapair Paternity in Passerine Birds. PLoS ONE. 5(10). e13456–e13456. 76 indexed citations
10.
Johnsen, Arild, Eirik Rindal, Per G. P. Ericson, et al.. (2010). DNA barcoding of Scandinavian birds reveals divergent lineages in trans-Atlantic species. Journal für Ornithologie. 151(3). 565–578. 126 indexed citations
11.
Fossøy, Frode, Arild Johnsen, & Jan T. Lifjeld. (2009). Cell‐mediated immunity and multi‐locus heterozygosity in bluethroat nestlings. Journal of Evolutionary Biology. 22(9). 1954–1960. 15 indexed citations
12.
Whittingham, Linda A., Peter O. Dunn, & Jan T. Lifjeld. (2007). EGG MASS INFLUENCES NESTLING QUALITY IN TREE SWALLOWS, BUT THERE IS NO DIFFERENTIAL ALLOCATION IN RELATION TO LAYING ORDER OR SEX. Ornithological Applications. 109(3). 585–585. 32 indexed citations
13.
Johnsen, Arild & Jan T. Lifjeld. (2003). Ecological constraints on extra-pair paternity in the bluethroat. Oecologia. 136(3). 476–483. 61 indexed citations
14.
Slagsvold, Tore, Bo T. Hansen, Lars Erik Johannessen, & Jan T. Lifjeld. (2002). Mate choice and imprinting in birds studied by cross-fostering in the wild. Proceedings of the Royal Society B Biological Sciences. 269(1499). 1449–1455. 109 indexed citations
15.
Birkhead, T. R., Ben J. Hatchwell, Robert Lindner, et al.. (2001). EXTRA-PAIR PATERNITY IN THE COMMON MURRE1. Ornithological Applications. 103(1). 158–158. 32 indexed citations
16.
Johnsen, Arild, Peder Fiske, Trond Amundsen, Jan T. Lifjeld, & Percy A. Rohde. (2000). Colour bands, mate choice and paternity in the bluethroat. Animal Behaviour. 59(1). 111–119. 16 indexed citations
17.
Whittingham, Linda A. & Jan T. Lifjeld. (1995). High paternal investment in unrelated young: extra-pair paternity and male parental care in house martins. Behavioral Ecology and Sociobiology. 37(2). 103–108. 2 indexed citations
18.
Slagsvold, Tore & Jan T. Lifjeld. (1992). Plumage Color is a Condition-Dependent Sexual Trait in Male Pied Flycatchers. Evolution. 46(3). 825–825. 20 indexed citations
19.
Slagsvold, Tore & Jan T. Lifjeld. (1992). PLUMAGE COLOR IS A CONDITION-DEPENDENT SEXUAL TRAIT IN MALE PIED FLYCATCHERS. Evolution. 46(3). 825–828. 54 indexed citations
20.
Lifjeld, Jan T. & Tore Slagsvold. (1989). Female nutritional state influences the allocation of incubation feeding by polygynous pied flycatcher males. Animal Behaviour. 38(5). 903–904. 14 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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