Len Thomas

22.1k total citations · 7 hit papers
178 papers, 15.3k citations indexed

About

Len Thomas is a scholar working on Ecology, Oceanography and Global and Planetary Change. According to data from OpenAlex, Len Thomas has authored 178 papers receiving a total of 15.3k indexed citations (citations by other indexed papers that have themselves been cited), including 155 papers in Ecology, 77 papers in Oceanography and 38 papers in Global and Planetary Change. Recurrent topics in Len Thomas's work include Marine animal studies overview (118 papers), Underwater Acoustics Research (69 papers) and Marine and fisheries research (36 papers). Len Thomas is often cited by papers focused on Marine animal studies overview (118 papers), Underwater Acoustics Research (69 papers) and Marine and fisheries research (36 papers). Len Thomas collaborates with scholars based in United Kingdom, United States and Portugal. Len Thomas's co-authors include S. T. Buckland, David L. Borchers, Jeffrey L. Laake, Tiago A. Marques, David R. Anderson, K P Burnham, Jeff Laake, Eric A. Rexstad, Debra Anderson and K. P. Burnham and has published in prestigious journals such as Nature Communications, SHILAP Revista de lepidopterología and Journal of the American Statistical Association.

In The Last Decade

Len Thomas

170 papers receiving 14.4k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Introduction to Distance Sampling

2001 2.4k citations Jeffrey L. Laake, Len Thomas et al. profile →
Introduction to Distance Sampling: Estimating Abundance of Biological Populations

2001 1.9k citations Len Thomas et al. profile →
Distance software: design and analysis of distance sampling surveys for estimating population size

2009 1.6k citations Len Thomas, Eric A. Rexstad et al. profile →
State–space models of individual animal movement

2008 659 citations Len Thomas et al. profile →
Advanced Distance Sampling

2004 604 citations Jeffrey L. Laake, Len Thomas et al. profile →
Estimating animal population density using passive acoustics

2012 463 citations Tiago A. Marques, Len Thomas et al. profile →
Understanding the combined effects of multiple stressors: A new perspective on a longstanding challenge

2022 109 citations Enrico Pirotta, Len Thomas et al. The Science of The Total Environment profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Len Thomas United Kingdom	51	12.8k	3.4k	3.3k	2.8k	2.2k	178	15.3k
Daniel P. Costa United States	82	17.9k 1.4×	3.9k 1.1×	5.9k 1.8×	3.9k 1.4×	782 0.3×	498	22.2k
David L. Borchers United Kingdom	38	8.2k 0.6×	2.4k 0.7×	2.1k 0.6×	798 0.3×	1.6k 0.7×	103	9.8k
Stuart Bearhop United Kingdom	62	18.9k 1.5×	4.4k 1.3×	6.8k 2.1×	2.1k 0.7×	1.3k 0.6×	210	21.9k
Henri Weimerskirch France	87	20.6k 1.6×	4.0k 1.2×	6.6k 2.0×	1.9k 0.7×	2.1k 0.9×	394	25.2k
Anatoly A. Saveliev Russia	16	7.7k 0.6×	5.4k 1.6×	4.5k 1.4×	1.3k 0.5×	1.5k 0.7×	64	15.6k
Robert Harcourt Australia	50	6.6k 0.5×	2.8k 0.8×	2.4k 0.7×	1.1k 0.4×	387 0.2×	284	10.0k
Graham M. Smith United Kingdom	2	7.2k 0.6×	5.3k 1.6×	4.3k 1.3×	1.3k 0.4×	1.3k 0.6×	2	14.7k
Rory P. Wilson United Kingdom	63	9.5k 0.7×	3.9k 1.1×	2.7k 0.8×	885 0.3×	712 0.3×	255	13.1k
Jeffrey L. Laake United States	30	7.6k 0.6×	2.4k 0.7×	1.9k 0.6×	738 0.3×	1.4k 0.6×	66	9.0k
James A. Estes United States	59	17.9k 1.4×	4.8k 1.4×	8.8k 2.7×	6.6k 2.3×	1.6k 0.7×	145	24.3k

Countries citing papers authored by Len Thomas

Since Specialization

Citations

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

Fields of papers citing papers by Len Thomas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Len Thomas

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Moyes, Faye, et al.. (2025). Factors associated with bycatch of marine mammals in United Kingdom static net fisheries. ICES Journal of Marine Science. 82(8).

Pirotta, Enrico, Peter L. Tyack, John W. Durban, et al.. (2024). Decreasing body size is associated with reduced calving probability in critically endangered North Atlantic right whales. Royal Society Open Science. 11(2). 240050–240050. 10 indexed citations

Thomas, Len, et al.. (2024). Age is not just a number: How incorrect ageing impacts close‐kin mark‐recapture estimates of population size. Ecology and Evolution. 14(6). e11352–e11352. 2 indexed citations

Pirotta, Enrico, Len Thomas, Daniel P. Costa, et al.. (2022). Understanding the combined effects of multiple stressors: A new perspective on a longstanding challenge. The Science of The Total Environment. 821. 153322–153322. 109 indexed citations breakdown →

Thomas, Len, et al.. (2021). Calibrating models of cancer invasion: parameter estimation using approximate Bayesian computation and gradient matching. Royal Society Open Science. 8(6). 202237–202237. 3 indexed citations

Booth, Cormac & Len Thomas. (2021). An Expert Elicitation of the Effects of Low Salinity Water Exposure on Bottlenose Dolphins. SHILAP Revista de lepidopterología. 2(1). 179–192. 13 indexed citations

Joy, Ruth, Robert S. Schick, Michael Dowd, et al.. (2021). A fine-scale marine mammal movement model for assessing long-term aggregate noise exposure. Ecological Modelling. 464. 109798–109798. 3 indexed citations

Barlow, Jay, et al.. (2021). Acoustic detection range and population density of Cuvier's beaked whales estimated from near-surface hydrophones. The Journal of the Acoustical Society of America. 149(1). 111–125. 21 indexed citations

Smith, Cynthia R., Forrest M. Gomez, Theoni Photopoulou, et al.. (2021). Accurate Epigenetic Aging in Bottlenose Dolphins (Tursiops truncatus), an Essential Step in the Conservation of at-Risk Dolphins. SHILAP Revista de lepidopterología. 2(3). 416–420. 17 indexed citations

10.

Bouchet, Phil J., David L. Miller, Jason J. Roberts, et al.. (2020). dsmextra: Extrapolation assessment tools for density surface models. Methods in Ecology and Evolution. 11(11). 1464–1469. 50 indexed citations

11.

Tyack, Peter L. & Len Thomas. (2019). Using dose–response functions to improve calculations of the impact of anthropogenic noise. Aquatic Conservation Marine and Freshwater Ecosystems. 29(S1). 242–253. 13 indexed citations

12.

Miller, David L., Eric A. Rexstad, Len Thomas, Laura J. Marshall, & Jeffrey L. Laake. (2019). Distance Sampling in R. Journal of Statistical Software. 89(1). 189 indexed citations

13.

Jaramillo‐Legorreta, Armando M., Gustavo Cárdenas‐Hinojosa, Edwyna Nieto‐Garcia, et al.. (2019). Decline towards extinction of Mexico's vaquita porpoise ( Phocoena sinus ). Royal Society Open Science. 6(7). 190598–190598. 59 indexed citations

14.

Thomas, Len, Debbie J. F. Russell, Callan Duck, et al.. (2019). Modelling the population size and dynamics of the British grey seal. Aquatic Conservation Marine and Freshwater Ecosystems. 29(S1). 6–23. 36 indexed citations

15.

Miller, D. Gary, Megan C. Ferguson, Tina M. Yack, et al.. (2018). Questions Frequently Asked by Marine Mammal Density Surface Modelers. OSF Preprints (OSF Preprints). 1 indexed citations

16.

Thomas, Len, et al.. (2017). Estimation bias under model selection for distance sampling detection functions. Environmental and Ecological Statistics. 24(3). 399–414. 17 indexed citations

17.

Danilewicz, Daniel, et al.. (2017). Whale distribution in a breeding area: spatial models of habitat use and abundance of western South Atlantic humpback whales. Marine Ecology Progress Series. 585. 213–227. 26 indexed citations

18.

Williams, Rob, Andrew Wright, Erin Ashe, et al.. (2015). Impacts of anthropogenic noise on marine life: Publication patterns, new discoveries, and future directions in research and management. Ocean & Coastal Management. 115. 17–24. 246 indexed citations

19.

Costa, Daniel P., Erica Fleishman, Mark A. Hindell, et al.. (2013). Using short-term measures of behaviour to estimate long-term fitness of southern elephant seals. Marine Ecology Progress Series. 496. 99–108. 139 indexed citations

20.

Lonergan, Mike, David Thompson, Len Thomas, & Callan Duck. (2011). An Approximate Bayesian Method Applied to Estimating the Trajectories of Four British Grey Seal (Halichoerus grypus) Populations from Pup Counts. Journal of Marine Biology. 2011. 1–7. 16 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