Alexander Riek

908 total citations
40 papers, 634 citations indexed

About

Alexander Riek is a scholar working on Animal Science and Zoology, Ecology, Evolution, Behavior and Systematics and Ecology. According to data from OpenAlex, Alexander Riek has authored 40 papers receiving a total of 634 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Animal Science and Zoology, 16 papers in Ecology, Evolution, Behavior and Systematics and 14 papers in Ecology. Recurrent topics in Alexander Riek's work include Effects of Environmental Stressors on Livestock (20 papers), Bat Biology and Ecology Studies (15 papers) and Ruminant Nutrition and Digestive Physiology (9 papers). Alexander Riek is often cited by papers focused on Effects of Environmental Stressors on Livestock (20 papers), Bat Biology and Ecology Studies (15 papers) and Ruminant Nutrition and Digestive Physiology (9 papers). Alexander Riek collaborates with scholars based in Germany, Australia and United Kingdom. Alexander Riek's co-authors include Martína Gerken, Fritz Geiser, John R. Speakman, Catherine Hambly, Gerhard Körtner, Thomas Ruf, Walter Arnold, E. Moors, Jürgen Hummel and Jorn Bruggeman and has published in prestigious journals such as Scientific Reports, Journal of Dairy Science and Biological reviews/Biological reviews of the Cambridge Philosophical Society.

In The Last Decade

Alexander Riek

40 papers receiving 618 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Alexander Riek Germany 17 264 238 213 138 128 40 634
Martína Gerken Germany 17 369 1.4× 188 0.8× 133 0.6× 191 1.4× 138 1.1× 61 758
I. Choshniak Israel 20 341 1.3× 312 1.3× 188 0.9× 56 0.4× 251 2.0× 43 968
Patrick Steuer Germany 10 96 0.4× 259 1.1× 75 0.4× 54 0.4× 193 1.5× 14 519
Tarcízio Antônio Rêgo de Paula Brazil 17 104 0.4× 317 1.3× 240 1.1× 85 0.6× 104 0.8× 79 872
Johanna Painer Austria 14 48 0.2× 196 0.8× 83 0.4× 181 1.3× 132 1.0× 39 598
Anne Berger Germany 18 112 0.4× 478 2.0× 146 0.7× 248 1.8× 48 0.4× 35 773
K. J. Stafford New Zealand 15 204 0.8× 128 0.5× 76 0.4× 272 2.0× 390 3.0× 67 819
M. Lechner‐Doll Germany 18 209 0.8× 459 1.9× 94 0.4× 169 1.2× 521 4.1× 37 1.1k
Klaus M. Scheibe Germany 12 104 0.4× 151 0.6× 58 0.3× 167 1.2× 57 0.4× 17 347
Ragna Franz Germany 8 89 0.3× 149 0.6× 82 0.4× 46 0.3× 95 0.7× 8 359

Countries citing papers authored by Alexander Riek

Since Specialization
Citations

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

Fields of papers citing papers by Alexander Riek

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alexander Riek

This figure shows the co-authorship network connecting the top 25 collaborators of Alexander Riek. A scholar is included among the top collaborators of Alexander Riek 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 Alexander Riek. Alexander Riek 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.
Hummel, Jürgen, et al.. (2024). Comparative study of feeding and rumination behaviour of goats and sheep fed mixed grass hay of different chop length. Journal of Animal Physiology and Animal Nutrition. 108(3). 700–710. 2 indexed citations
2.
Breithaupt, Angele, Alexander Riek, John R. Speakman, et al.. (2024). Increased Susceptibility of Rousettus aegyptiacus Bats to Respiratory SARS-CoV-2 Challenge Despite Its Distinct Tropism for Gut Epithelia in Bats. Viruses. 16(11). 1717–1717. 1 indexed citations
3.
Riek, Alexander. (2021). Comparative phylogenetic analysis of milk output at peak lactation. Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology. 257. 110976–110976. 1 indexed citations
4.
Riek, Alexander, Stefanie Petow, John R. Speakman, & Lars Schrader. (2020). Daily energy expenditure and water turnover in two breeds of laying hens kept in floor housing. animal. 15(1). 100047–100047. 4 indexed citations
5.
Gerken, Martína, et al.. (2019). Adaptation capacity of Boer goats to saline drinking water. animal. 13(10). 2268–2276. 18 indexed citations
6.
Gerken, Martína, et al.. (2019). Boer goats physiology adaptation to saline drinking water. Research in Veterinary Science. 129. 120–128. 14 indexed citations
7.
Riek, Alexander, Thomas Ruf, Walter Arnold, et al.. (2019). Energy expenditure and body temperature variations in llamas living in the High Andes of Peru. Scientific Reports. 9(1). 4037–4037. 22 indexed citations
8.
Riek, Alexander, et al.. (2018). Reactions to saline drinking water in Boer goats in a free-choice system. animal. 13(1). 98–105. 18 indexed citations
9.
Riek, Alexander, et al.. (2017). Long-term adaptation capacity of ponies: effect of season and feed restriction on blood and physiological parameters. animal. 12(1). 88–97. 12 indexed citations
10.
Gerken, Martína, et al.. (2013). Adaptation strategies of Shetland ponies (Equus ferus caballus) to seasonal changes in climatic conditions and food availability.. Züchtungskunde. 85(1). 58–73. 2 indexed citations
11.
Riek, Alexander & Jorn Bruggeman. (2013). Estimating field metabolic rates for Australian marsupials using phylogeny. Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology. 164(4). 598–604. 8 indexed citations
12.
Riek, Alexander, et al.. (2013). Short communication: Milk output in llamas (Lama glama) in relation to energy intake and water turnover measured by an isotope dilution technique. Journal of Dairy Science. 96(3). 1815–1819. 3 indexed citations
13.
Gerken, Martína, et al.. (2012). Effect of long-term feed restriction on the health status and welfare of a robust horse breed, the Shetland pony (Equus ferus caballus). Research in Veterinary Science. 94(3). 826–831. 17 indexed citations
14.
Riek, Alexander, et al.. (2011). Effect of shearing on water turnover and thermobiological variables in German Blackhead mutton sheep1. Journal of Animal Science. 89(12). 4294–4304. 25 indexed citations
15.
Riek, Alexander, et al.. (2010). Deuterium oxide dilution accurately predicts water intake in sheep and goats. animal. 4(9). 1606–1612. 16 indexed citations
16.
Riek, Alexander. (2008). Relationship between field metabolic rate and body weight in mammals: effect of the study. Journal of Zoology. 276(2). 187–194. 8 indexed citations
17.
Riek, Alexander, et al.. (2008). Deuterium for Estimating Total Body Water and Turnover Rates in Turkeys Exposed to Different Incubation Treatments. Poultry Science. 87(12). 2624–2628. 2 indexed citations
18.
Riek, Alexander, Martína Gerken, & E. Moors. (2007). Measurement of Milk Intake in Suckling Llamas (Lama glama) Using Deuterium Oxide Dilution. Journal of Dairy Science. 90(2). 867–875. 17 indexed citations
19.
Riek, Alexander, et al.. (2007). Measuring the energy expenditure and water flux in free‐ranging alpacas (Lama pacos) in the peruvian andes using the doubly labelled water technique. Journal of Experimental Zoology Part A Ecological Genetics and Physiology. 307A(12). 667–675. 12 indexed citations
20.
Riek, Alexander & Martína Gerken. (2006). Changes in Llama (Lama glama) Milk Composition During Lactation. Journal of Dairy Science. 89(9). 3484–3493. 27 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Martína Gerken Breakdown of academic impact, for papers by I. Choshniak Breakdown of academic impact, for papers by Patrick Steuer Breakdown of academic impact, for papers by Tarcízio Antônio Rêgo de Paula Breakdown of academic impact, for papers by Johanna Painer Breakdown of academic impact, for papers by Anne Berger Breakdown of academic impact, for papers by K. J. Stafford Breakdown of academic impact, for papers by M. Lechner‐Doll Breakdown of academic impact, for papers by Klaus M. Scheibe Breakdown of academic impact, for papers by Ragna Franz
Rankless by CCL
2026