D-Index & Metrics Best Publications

D-Index & Metrics D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines.

Discipline name D-index D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines. Citations Publications World Ranking National Ranking
Ecology and Evolution D-index 62 Citations 10,147 186 World Ranking 1262 National Ranking 20

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Gene
  • Genetics

His primary scientific interests are in Ecology, Zoology, Demography, Ficedula and Mating. His research is interdisciplinary, bridging the disciplines of Paternal care and Ecology. Zoology is closely attributed to Genetics in his study.

His studies in Demography integrate themes in fields like Fledge, Sexual conflict and Mate guarding. His Mating study combines topics in areas such as Evolutionary biology, Inbreeding and Reproductive success. His Extra-pair copulation study combines topics from a wide range of disciplines, such as Animal ecology, Luscinia and Brood parasite.

His most cited work include:

  • Females increase offspring heterozygosity and fitness through extra-pair matings (440 citations)
  • Female bluethroats enhance offspring immunocompetence through extra-pair copulations (209 citations)
  • Extra-pair paternity in monogamous tree swallows (208 citations)

What are the main themes of his work throughout his whole career to date?

The scientist’s investigation covers issues in Ecology, Zoology, Passerine, Sperm competition and Sperm. His study connects Demography and Ecology. The study incorporates disciplines such as Polygyny, Paternal care, Nest and Reproductive success in addition to Demography.

His research related to Extra-pair copulation, Luscinia, Plumage, Mating system and Brood might be considered part of Zoology. His Passerine course of study focuses on Evolutionary biology and Subspecies and Genetics. Jan T. Lifjeld combines subjects such as Range, Intraspecific competition and Human fertilization with his study of Sperm.

He most often published in these fields:

  • Ecology (59.04%)
  • Zoology (47.87%)
  • Passerine (21.81%)

What were the highlights of his more recent work (between 2012-2021)?

  • Ecology (59.04%)
  • Sperm (17.02%)
  • Zoology (47.87%)

In recent papers he was focusing on the following fields of study:

Jan T. Lifjeld mostly deals with Ecology, Sperm, Zoology, Passerine and Sperm competition. His Ecology research is multidisciplinary, relying on both Genetic diversity and Extinction. His Sperm research incorporates elements of Intraspecific competition, Songbird and Human fertilization.

Jan T. Lifjeld works in the field of Zoology, focusing on Subspecies in particular. His studies deal with areas such as Sexual selection, Innate immune system, Temperate climate and Reproductive success as well as Passerine. He has researched Sperm competition in several fields, including Allopatric speciation, Energetics, Heritability, Pyrrhula pyrrhula and Acrosome.

Between 2012 and 2021, his most popular works were:

  • Postcopulatory sexual selection is associated with accelerated evolution of sperm morphology. (50 citations)
  • Variation in sperm morphometry and sperm competition among barn swallow ( Hirundo rustica ) populations (43 citations)
  • Evolution of sperm structure and energetics in passerine birds (35 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Gene
  • Genetics

Jan T. Lifjeld mainly investigates Sperm, Zoology, Ecology, Sperm competition and Passerine. His work on Sperm morphology as part of general Sperm study is frequently linked to Swimming speed, therefore connecting diverse disciplines of science. His work often combines Zoology and Genomics studies.

Jan T. Lifjeld studies Ecology, focusing on Seabird in particular. The concepts of his Sperm competition study are interwoven with issues in Interspecific competition, Azores bullfinch, Heritability and Pyrrhula pyrrhula, Bullfinch. The various areas that he examines in his Passerine study include Avian clutch size, Genetics, Temperate climate, Sexual selection and Ecosystem.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Best Publications

Females increase offspring heterozygosity and fitness through extra-pair matings

Katharina Foerster;Kaspar Delhey;Arild Johnsen;Jan T. Lifjeld.
Nature (2003)

582 Citations

Extra-pair paternity in monogamous tree swallows

.
Animal Behaviour (1993)

264 Citations

POLYGYNY IN BIRDS: THE ROLE OF COMPETITION BETWEEN FEMALES FOR MALE PARENTAL CARE

.
The American Naturalist (1994)

263 Citations

Female bluethroats enhance offspring immunocompetence through extra-pair copulations

Arild Johnsen;Vegard Andersen;Christine Sunding;Jan T. Lifjeld.
Nature (2000)

252 Citations

Variation in plumage colour of the Great tit Parus major in relation to habitat, season and food

.
Journal of Zoology (1985)

220 Citations

Ultraviolet plumage ornamentation affects social mate choice and sperm competition in bluethroats (Aves: Luscinia s. svecica): a field experiment

Arild Johnsen;Staffan Andersson;Jonas rnborg;Jan T. Lifjeld.
Proceedings of The Royal Society B: Biological Sciences (1998)

203 Citations

Female control of extra-pair fertilization in tree swallows

.
Behavioral Ecology and Sociobiology (1992)

196 Citations

DNA barcoding of Scandinavian birds reveals divergent lineages in trans-Atlantic species

Arild Johnsen;Eirik Rindal;Per G. P. Ericson;Dario Zuccon.
Journal of Ornithology (2010)

180 Citations

On the cost of searching for a mate in female pied flycatchers Ficedula hypoleuca

.
Animal Behaviour (1988)

175 Citations

Carotenoids in food chain studies—II. The food chain of Parus SPP. Monitored by carotenoid analysis☆

V Partali;S Liaaen-Jensen;T Slagsvold;J.T Lifjeld.
Comparative Biochemistry and Physiology B (1987)

174 Citations

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