Nils Kjellén

1.8k total citations
27 papers, 1.3k citations indexed

About

Nils Kjellén is a scholar working on Ecology, Nature and Landscape Conservation and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Nils Kjellén has authored 27 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Ecology, 8 papers in Nature and Landscape Conservation and 8 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Nils Kjellén's work include Avian ecology and behavior (21 papers), Ecology and Vegetation Dynamics Studies (8 papers) and Animal Behavior and Reproduction (8 papers). Nils Kjellén is often cited by papers focused on Avian ecology and behavior (21 papers), Ecology and Vegetation Dynamics Studies (8 papers) and Animal Behavior and Reproduction (8 papers). Nils Kjellén collaborates with scholars based in Sweden, Denmark and Germany. Nils Kjellén's co-authors include Thomas Alerstam, Mikael Hake, Kasper Thorup, Christer Wiklund, Roine Strandberg, Susanne Åkesson, Oskar Brattström, Magnus Tannerfeldt, Anders Angerbjörn and Dominique Berteaux and has published in prestigious journals such as PLoS ONE, Proceedings of the Royal Society B Biological Sciences and Journal of Animal Ecology.

In The Last Decade

Nils Kjellén

27 papers receiving 1.1k citations

Peers

Nils Kjellén

ECOLO

EEBS

NLC

GPC

Paul Kerlinger United States

Reto Spaar Switzerland

Lennart Karlsson Sweden

Greg W. Mitchell Canada

Christopher M. Tonra United States

M. P. Harris United Kingdom

Ben J. Koks Netherlands

David N. Ewert United States

Iain J. Stenhouse United States

J. Alejandro Scolaro Argentina

Paul Kerlinger United States

Nils Kjellén

1.2k ×1.0

ECOLO

430 ×0.9

EEBS

211 ×0.7

219 ×0.8

NLC

253 ×1.8

GPC

Citations per year, relative to Nils Kjellén Nils Kjellén (= 1×) peers Paul Kerlinger

Countries citing papers authored by Nils Kjellén

Since Specialization

Citations

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

Fields of papers citing papers by Nils Kjellén

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nils Kjellén

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

Beaugrand, Grégory, Éric Goberville, Frédéric Jiguet, et al.. (2013). Long-Term Phenological Shifts in Raptor Migration and Climate. PLoS ONE. 8(11). e79112–e79112. 28 indexed citations

Brattström, Oskar, Nils Kjellén, Thomas Alerstam, & Susanne Åkesson. (2008). Effects of wind and weather on red admiral, Vanessa atalanta, migration at a coastal site in southern Sweden. Animal Behaviour. 76(2). 335–344. 31 indexed citations

Thorup, Kasper, Thomas Alerstam, Mikael Hake, & Nils Kjellén. (2006). Traveling or stopping of migrating birds in relation to wind: an illustration for the osprey. Behavioral Ecology. 17(3). 497–502. 58 indexed citations

Thorup, Kasper, Mark R. Fuller, Thomas Alerstam, et al.. (2006). Do migratory flight paths of raptors follow constant geographical or geomagnetic courses?. Animal Behaviour. 72(4). 875–880. 10 indexed citations

Thorup, Kasper, Thomas Alerstam, Mikael Hake, & Nils Kjellén. (2003). Can vector summation describe the orientation system of juvenile ospreys and honey buzzards? – An analysis of ring recoveries and satellite tracking. Oikos. 103(2). 350–359. 26 indexed citations

Kjellén, Nils. (2002). Sträckfågelräkningar vid Falsterbo hösten 2002. KTH Publication Database DiVA (KTH Royal Institute of Technology). 2 indexed citations

Kjellén, Nils, Mikael Hake, & Thomas Alerstam. (2001). Timing and speed of migration in male, female and juvenile Ospreys Pandion haliaetus between Sweden and Africa as revealed by field observations, radar and satellite tracking. Journal of Avian Biology. 32(1). 57–67. 76 indexed citations

Hake, Mikael, Nils Kjellén, & Thomas Alerstam. (2001). Satellite tracking of Swedish Ospreys Pandion haliaetus : autumn migration routes and orientation. Journal of Avian Biology. 32(1). 47–56. 93 indexed citations

Kjellén, Nils. (2000). Skuas on the Canadian tundra in 1999: relative occurrence of species, ages and colour phases. Ornis Svecica. 10(2). 71–78. 1 indexed citations

10.

Kjellén, Nils. (1999). Different migration strategies among Swedish Common Buzzards Buteo buteo revealed by the proportion of white birds. Ornis Svecica. 9(1–2). 11–18. 3 indexed citations

11.

Wiklund, Christer, et al.. (1999). Lemming predators on the Siberian tundra. AMBIO. 28(3). 281–286. 19 indexed citations

12.

Kjellén, Nils. (1998). Annual variation in numbers, age and sex ratios among migrating raptors at Falsterbo, Sweden from 1986–1995. Journal für Ornithologie. 139(2). 157–171. 12 indexed citations

13.

Wiklund, Christer, et al.. (1998). Mechanisms determining the spatial distribution of microtine predators on the Arctic tundra. Journal of Animal Ecology. 67(1). 91–98. 30 indexed citations

14.

Kjellén, Nils. (1997). Importance of a bird migration hot spot: proportion of the Swedish population of various raptors observed on autumn migration at Falsterbo 1986–1995 and population changes reflected by the migration figures. Ornis Svecica. 7(1). 21–34. 11 indexed citations

15.

Kjellén, Nils. (1997). Skuas on the Eurasian tundra; relative occurrence of species, ages and colour phases. Ibis. 139(2). 282–288. 7 indexed citations

16.

Kjellén, Nils, Mikael Hake, & Thomas Alerstam. (1997). Strategies of Two Ospreys Pandion haliaetus Migrating between Sweden and Tropical Africa as Revealed by Satellite Tracking. Journal of Avian Biology. 28(1). 15–15. 49 indexed citations

17.

Kjellén, Nils, et al.. (1995). Fauna and zoogeography of Eurasian Arctic birds. 1 indexed citations

18.

Kjellén, Nils. (1994). Moult in relation to migration in birds—a review. Ornis Svecica. 4(1). 1–24. 66 indexed citations

19.

Kjellén, Nils. (1994). Differences in Age and Sex Ratio among Migrating and Wintering Raptors in Southern Sweden. The Auk. 111(2). 274–284. 24 indexed citations

20.

Kjellén, Nils. (1992). Differential Timing of Autumn Migration between Sex and Age Groups in Raptors at Falsterbo, Sweden. Ornis Scandinavica. 23(4). 420–420. 81 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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