Ulrich Köppen

1.2k total citations
17 papers, 629 citations indexed

About

Ulrich Köppen is a scholar working on Ecology, Nature and Landscape Conservation and Ecological Modeling. According to data from OpenAlex, Ulrich Köppen has authored 17 papers receiving a total of 629 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Ecology, 5 papers in Nature and Landscape Conservation and 5 papers in Ecological Modeling. Recurrent topics in Ulrich Köppen's work include Avian ecology and behavior (11 papers), Wildlife Ecology and Conservation (7 papers) and Species Distribution and Climate Change (5 papers). Ulrich Köppen is often cited by papers focused on Avian ecology and behavior (11 papers), Wildlife Ecology and Conservation (7 papers) and Species Distribution and Climate Change (5 papers). Ulrich Köppen collaborates with scholars based in Germany, United Kingdom and Russia. Ulrich Köppen's co-authors include Wojciech Kania, Michael Schaub, Michel Foucault, Franz Bairlein, Wolfgang Fiedler, Franz J. Conraths, Peter Berthold, Dieter Wallschläger, Martin Plath and Kerstin Müller and has published in prestigious journals such as Journal of Animal Ecology, American Journal of Tropical Medicine and Hygiene and Radiotherapy and Oncology.

In The Last Decade

Ulrich Köppen

17 papers receiving 571 citations

Peers

Ulrich Köppen

ECOLO

EEBS

EPIDE

Anna B. Estes Tanzania

Krysten L. Schuler United States

Sandrine Ruette France

Nikolay Markov Russia

Roy McBride United States

Billie Lazenby Australia

Marie Pagès France

Nick Mooney Australia

Joe Walston United States

Graham Hemson United Kingdom

Anna B. Estes Tanzania

Ulrich Köppen

479 ×1.5

ECOLO

108 ×0.8

107 ×0.9

87 ×0.9

EEBS

170 ×1.8

EPIDE

Citations per year, relative to Ulrich Köppen Ulrich Köppen (= 1×) peers Anna B. Estes

Countries citing papers authored by Ulrich Köppen

Since Specialization

Citations

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

Fields of papers citing papers by Ulrich Köppen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ulrich Köppen

This figure shows the co-authorship network connecting the top 25 collaborators of Ulrich Köppen. A scholar is included among the top collaborators of Ulrich Köppen 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 Ulrich Köppen. Ulrich Köppen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

Köppen, Ulrich, Florian Stieler, Grit Welzel, et al.. (2020). Prospective assessment of mask versus frame fixation during Gamma Knife treatment for brain metastases. Radiotherapy and Oncology. 147. 195–199. 24 indexed citations

Grüebler, Martin U., et al.. (2020). Integrating stable isotopes, parasite, and ring‐reencounter data to quantify migratory connectivity—A case study with Barn Swallows breeding in Switzerland, Germany, Sweden, and Finland. Ecology and Evolution. 10(4). 2225–2237. 6 indexed citations

Köppen, Ulrich, et al.. (2016). Partial Migration in a Central European Raptor Species: An Analysis of Ring Re-Encounter Data of Common KestrelsFalco tinnunculus. Acta Ornithologica. 51(1). 39–54. 15 indexed citations

Köppen, Ulrich, et al.. (2016). A comparison of migratory strategies of partial migratory raptors from Germany. Journal für Ornithologie. 158(2). 579–592. 7 indexed citations

Münter, Marc, et al.. (2015). Intraoperative radiotherapy (IORT) in the treatment of head and neck cancer. Translational Cancer Research. 4(2). 178–181. 1 indexed citations

Grimm‐Seyfarth, Annegret, B. Weiß, Lars Kulik, et al.. (2015). Earlier breeding, lower success: does the spatial scale of climatic conditions matter in a migratory passerine bird?. Ecology and Evolution. 5(23). 5722–5734. 12 indexed citations

Bairlein, Franz, Jochen Dierschke, Volker Dierschke, et al.. (2014). Atlas des Vogelzugs. Ringfunde deutscher Brut- und Gastvögel. Max Planck Digital Library. 33 indexed citations

Köppen, Ulrich, et al.. (2011). Declines in breeding site fidelity in an increasing population of White Storks Ciconia ciconia. Ibis. 153(3). 636–639. 14 indexed citations

Korner‐Nievergelt, Fränzi, Philip W. Atkinson, Jérôme Guélat, et al.. (2010). Improving the analysis of movement data from marked individuals through explicit estimation of observer heterogeneity. Journal of Avian Biology. 41(1). 8–17. 57 indexed citations

10.

Köppen, Ulrich, et al.. (2010). Breeding dispersal directions in the white stork (Ciconia ciconia) are affected by spring migration routes. Journal of Ethology. 28(2). 393–397. 13 indexed citations

11.

Köppen, Ulrich, et al.. (2010). Seasonal migrations of four individual bar-headed geese Anser indicus from Kyrgyzstan followed by satellite telemetry. Journal für Ornithologie. 151(3). 703–712. 17 indexed citations

12.

Smallegange, Isabel M., et al.. (2009). Tits on the move: exploring the impact of environmental change on blue tit and great tit migration distance. Journal of Animal Ecology. 79(2). 350–357. 23 indexed citations

13.

Globig, Anja, Christoph Staubach, Martin Beer, et al.. (2009). Epidemiological and Ornithological Aspects of Outbreaks of Highly Pathogenic Avian Influenza Virus H5N1 of Asian Lineage in Wild Birds in Germany, 2006 and 2007. Transboundary and Emerging Diseases. 56(3). 57–72. 79 indexed citations

14.

Robert, Alexandre, et al.. (2009). Recovery dynamics and viability of the white-tailed eagle (Haliaeetus albicilla) in Germany. Biodiversity and Conservation. 19(1). 97–112. 29 indexed citations

15.

Linke, Sonja, Matthias Niedrig, Andreas Kaiser, et al.. (2007). Serologic Evidence of West Nile Virus Infections in Wild Birds Captured in Germany. American Journal of Tropical Medicine and Hygiene. 77(2). 358–364. 75 indexed citations

16.

Schaub, Michael, Wojciech Kania, & Ulrich Köppen. (2005). Variation of primary production during winter induces synchrony in survival rates in migratory white storksCiconia ciconia. Journal of Animal Ecology. 74(4). 656–666. 137 indexed citations

17.

Foucault, Michel & Ulrich Köppen. (1981). Archäologie des Wissens. Suhrkamp eBooks. 87 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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