John R. Speakman

2.5k total citations
36 papers, 2.0k citations indexed

About

John R. Speakman is a scholar working on Ecology, Ecology, Evolution, Behavior and Systematics and Nature and Landscape Conservation. According to data from OpenAlex, John R. Speakman has authored 36 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Ecology, 21 papers in Ecology, Evolution, Behavior and Systematics and 6 papers in Nature and Landscape Conservation. Recurrent topics in John R. Speakman's work include Bat Biology and Ecology Studies (13 papers), Animal Behavior and Reproduction (9 papers) and Physiological and biochemical adaptations (8 papers). John R. Speakman is often cited by papers focused on Bat Biology and Ecology Studies (13 papers), Animal Behavior and Reproduction (9 papers) and Physiological and biochemical adaptations (8 papers). John R. Speakman collaborates with scholars based in United Kingdom, United States and Canada. John R. Speakman's co-authors include Maria S. Johnson, Elżbieta Król, Susan C. Thomson, Simon Verhulst, Colin Selman, Popko Wiersma, J. A. McLean, Paul A. Racey, Murray M. Humphries and Stan Boutin and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Ecology and Scientific Reports.

In The Last Decade

John R. Speakman

35 papers receiving 1.9k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John R. Speakman United Kingdom 27 1.2k 1.1k 428 172 172 36 2.0k
Henry J. Harlow United States 30 1.1k 0.9× 861 0.8× 607 1.4× 101 0.6× 161 0.9× 86 2.3k
Britt J. Heidinger United States 24 1.1k 0.9× 1.2k 1.1× 726 1.7× 132 0.8× 135 0.8× 61 2.3k
Bruce A. Wunder United States 24 1.3k 1.0× 705 0.7× 285 0.7× 140 0.8× 265 1.5× 44 1.9k
Mario Rosenmann Chile 25 1.4k 1.2× 1.1k 1.0× 408 1.0× 82 0.5× 216 1.3× 63 1.9k
Paweł Koteja Poland 28 1.4k 1.2× 1.2k 1.1× 714 1.7× 256 1.5× 781 4.5× 83 2.8k
Roberto F. Nespolo Chile 31 1.8k 1.5× 1.5k 1.4× 356 0.8× 82 0.5× 406 2.4× 121 2.8k
Nicole E. Cyr United States 20 816 0.7× 1.0k 1.0× 222 0.5× 288 1.7× 119 0.7× 26 2.2k
Antoine Stier France 24 841 0.7× 803 0.8× 766 1.8× 85 0.5× 153 0.9× 63 2.0k
François Criscuolo France 37 1.4k 1.1× 1.6k 1.5× 1.5k 3.5× 198 1.2× 254 1.5× 115 3.8k
Christopher Turbill Australia 23 1.0k 0.9× 1.4k 1.3× 296 0.7× 72 0.4× 110 0.6× 52 1.8k

Countries citing papers authored by John R. Speakman

Since Specialization
Citations

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

Fields of papers citing papers by John R. Speakman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John R. Speakman. 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 John R. Speakman. The network helps show where John R. Speakman may publish in the future.

Co-authorship network of co-authors of John R. Speakman

This figure shows the co-authorship network connecting the top 25 collaborators of John R. Speakman. A scholar is included among the top collaborators of John R. Speakman 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 John R. Speakman. John R. Speakman 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.
Catenacci, Victoria A., et al.. (2024). Improving quality control procedures for the measurement of total daily energy expenditure using the two‐point doubly labeled water method. Rapid Communications in Mass Spectrometry. 38(19). e9886–e9886.
2.
3.
Welcker, Jorg, Børge Moe, Claus Bech, et al.. (2009). Evidence for an intrinsic energetic ceiling in free‐ranging kittiwakes Rissa tridactyla. Journal of Animal Ecology. 79(1). 205–213. 41 indexed citations
4.
Lane, Jeffrey E., Stan Boutin, John R. Speakman, & Murray M. Humphries. (2009). Energetic costs of male reproduction in a scramble competition mating system. Journal of Animal Ecology. 79(1). 27–34. 81 indexed citations
5.
Vaanholt, Lobke M., John R. Speakman, Theodore Garland, G. E. Lobley, & G. Henk Visser. (2008). Protein Synthesis and Antioxidant Capacity in Aging Mice: Effects of Long‐Term Voluntary Exercise. Physiological and Biochemical Zoology. 81(2). 148–157. 35 indexed citations
6.
Speakman, John R., et al.. (2007). Sex- and concentration-dependent effects of predator feces on seasonal regulation of body mass in the bank vole Clethrionomys glareolus. Hormones and Behavior. 52(4). 436–444. 34 indexed citations
7.
Yearsley, Jon M., Juan J. Villalba, Iain J. Gordon, et al.. (2006). A Theory of Associating Food Types with Their Postingestive Consequences. The American Naturalist. 167(5). 705–716. 47 indexed citations
8.
Sparling, Carol, John R. Speakman, & M. A. Fedak. (2006). Seasonal variation in the metabolic rate and body composition of female grey seals: fat conservation prior to high-cost reproduction in a capital breeder?. Journal of Comparative Physiology B. 176(6). 505–512. 52 indexed citations
9.
Vézina, François, John R. Speakman, & Tony D. Williams. (2006). INDIVIDUALLY VARIABLE ENERGY MANAGEMENT STRATEGIES IN RELATION TO ENERGETIC COSTS OF EGG PRODUCTION. Ecology. 87(10). 2447–2458. 48 indexed citations
10.
Król, Elżbieta & John R. Speakman. (2003). Limits to sustained energy intake VI. Energetics of lactation in laboratory mice at thermoneutrality. Journal of Experimental Biology. 206(23). 4255–4266. 128 indexed citations
11.
Hatch, Kent A., Berry Pinshow, & John R. Speakman. (2002). Carbon isotope ratios in exhaled CO 2 can be used to determine not just present, but also past diets in birds. Journal of Comparative Physiology B. 172(3). 263–268. 41 indexed citations
12.
Hill, Richard C., Daniel D. Lewis, Karen C. Scott, et al.. (2001). Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds. American Journal of Veterinary Research. 62(3). 440–447. 20 indexed citations
13.
Johnson, Maria S., Susan C. Thomson, & John R. Speakman. (2001). Limits to sustained energy intake. Journal of Experimental Biology. 204(11). 1947–1956. 185 indexed citations
14.
Jackson, Diana, Paul Trayhurn, & John R. Speakman. (2001). Associations between energetics and over‐winter survival in the short‐tailed field vole Microtus agrestis. Journal of Animal Ecology. 70(4). 633–640. 111 indexed citations
15.
McLean, J. A. & John R. Speakman. (2000). Effects of Body Mass and Reproduction on the Basal Metabolic Rate of Brown Long‐Eared Bats (Plecotus auritus). Physiological and Biochemical Zoology. 73(1). 112–121. 53 indexed citations
16.
Ward, Sally, et al.. (2000). Preparation of hydrogen from water by reduction with lithium aluminium hydride for the analysis of ?2H by isotope ratio mass spectrometry. Rapid Communications in Mass Spectrometry. 14(6). 450–453. 22 indexed citations
17.
McLean, J. A. & John R. Speakman. (1997). Non-nutritional maternal support in the brown long-eared bat. Animal Behaviour. 54(5). 1193–1204. 53 indexed citations
18.
Entwistle, Abigail, Paul A. Racey, & John R. Speakman. (1997). Roost Selection by the Brown Long-Eared Bat Plecotus auritus. Journal of Applied Ecology. 34(2). 399–399. 92 indexed citations
19.
Speakman, John R. & David M. Bryant. (1993). The Searching Speeds of Foraging Shorebirds: Redshank (Tringa totanus) and Oystercatcher (Haematopus ostralegus). The American Naturalist. 142(2). 296–319. 17 indexed citations
20.
Speakman, John R.. (1986). The optimum search speed of terrestrial predators when feeding on sedentary prey: a predictive model. Journal of Theoretical Biology. 122(4). 401–407. 24 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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