James Clark

3.7k total citations · 2 hit papers
38 papers, 2.0k citations indexed

About

James Clark is a scholar working on Ecology, Evolution, Behavior and Systematics, Molecular Biology and Plant Science. According to data from OpenAlex, James Clark has authored 38 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Ecology, Evolution, Behavior and Systematics, 15 papers in Molecular Biology and 10 papers in Plant Science. Recurrent topics in James Clark's work include Genomics and Phylogenetic Studies (8 papers), Chromosomal and Genetic Variations (6 papers) and Genetic diversity and population structure (6 papers). James Clark is often cited by papers focused on Genomics and Phylogenetic Studies (8 papers), Chromosomal and Genetic Variations (6 papers) and Genetic diversity and population structure (6 papers). James Clark collaborates with scholars based in United Kingdom, United States and Australia. James Clark's co-authors include Philip C. J. Donoghue, Mark N. Puttick, Harald Schneider, Tom A. Williams, Ziheng Yang, Jennifer L. Morris, Paul Kenrick, Silvia Pressel, Charles H. Wellman and Dianne Edwards and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and PLANT PHYSIOLOGY.

In The Last Decade

James Clark

36 papers receiving 1.9k citations

Hit 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.

The timescale of early land plant evolution

2018 606 citations Jennifer L. Morris, Mark N. Puttick et al. Proceedings of the National Academy of Sciences profile →
The nature of the last universal common ancestor and its impact on the early Earth system

2024 74 citations Edmund R. R. Moody, Sandra Álvarez-Carretero et al. Nature Ecology & Evolution profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
James Clark United Kingdom	18	870	823	615	361	225	38	2.0k
Mark N. Puttick United Kingdom	24	951 1.1×	714 0.9×	791 1.3×	927 2.6×	360 1.6×	33	2.6k
Thomas Denk Sweden	38	1.2k 1.4×	1.0k 1.3×	2.0k 3.3×	454 1.3×	241 1.1×	109	3.1k
Richard E. Miller United States	25	676 0.8×	527 0.6×	690 1.1×	142 0.4×	367 1.6×	78	2.5k
Selena Y. Smith United States	27	648 0.7×	512 0.6×	999 1.6×	397 1.1×	107 0.5×	80	1.7k
Hagen Hass Germany	31	732 0.8×	2.2k 2.6×	1.9k 3.0×	659 1.8×	221 1.0×	51	3.4k
Silvia Pressel United Kingdom	31	731 0.8×	2.1k 2.6×	1.7k 2.8×	190 0.5×	296 1.3×	76	3.1k
Samuel Blanquart France	13	1.1k 1.3×	208 0.3×	257 0.4×	304 0.8×	486 2.2×	21	1.7k
U. Kutschera Germany	37	1.9k 2.2×	3.1k 3.7×	598 1.0×	91 0.3×	437 1.9×	189	4.7k
Jaime E. Blair United States	16	1.2k 1.3×	981 1.2×	154 0.3×	141 0.4×	176 0.8×	19	1.9k
Jurriaan M. de Vos Switzerland	16	493 0.6×	306 0.4×	615 1.0×	95 0.3×	253 1.1×	39	1.3k

Countries citing papers authored by James Clark

Since Specialization

Citations

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

Fields of papers citing papers by James Clark

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of James Clark

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

Clark, James, et al.. (2025). Decoding the evolution of dumbbell stomata: Insights from the developmental genes of sedges and grasses. Plant Gene. 42. 100494–100494. 1 indexed citations

Larson, Emily R., et al.. (2025). A highly conserved ABCG transporter mediates root–soil cohesion in Arabidopsis. PLANT PHYSIOLOGY. 198(1).

Davín, Adrián, Ben J. Woodcroft, Rochelle M. Soo, et al.. (2025). A geological timescale for bacterial evolution and oxygen adaptation. Science. 388(6742). eadp1853–eadp1853. 7 indexed citations

Bubier, Jason A., Price E. Dickson, Troy Wilcox, et al.. (2024). Discovery and validation of genes driving drug‐intake and related behavioral traits in mice. Genes Brain & Behavior. 23(1). e12875–e12875. 2 indexed citations

Moody, Edmund R. R., Sandra Álvarez-Carretero, Tara Mahendrarajah, et al.. (2024). The nature of the last universal common ancestor and its impact on the early Earth system. Nature Ecology & Evolution. 8(9). 1654–1666. 74 indexed citations breakdown →

Nevado, Bruno, Mark A. Chapman, Adrian C. Brennan, et al.. (2024). Genomic changes and stabilization following homoploid hybrid speciation of the Oxford ragwort Senecio squalidus. Current Biology. 34(19). 4412–4423.e5. 4 indexed citations

Clark, James, Alexander J. Hetherington, Jennifer L. Morris, et al.. (2023). Evolution of phenotypic disparity in the plant kingdom. Nature Plants. 9(10). 1618–1626. 21 indexed citations

Clark, James. (2023). Genome evolution in plants and the origins of innovation. New Phytologist. 240(6). 2204–2209. 24 indexed citations

Walter, Greg M., James Clark, Salvatore Cozzolino, et al.. (2023). Hidden genetic variation in plasticity provides the potential for rapid adaptation to novel environments. New Phytologist. 239(1). 374–387. 20 indexed citations

10.

Walter, Greg M., Keyne Monro, Enrico La Spina, et al.. (2023). Environmental effects on genetic variance are likely to constrain adaptation in novel environments. Evolution Letters. 8(3). 374–386. 6 indexed citations

11.

Walter, Greg M., James Clark, Antonia Cristaudo, et al.. (2022). Adaptive divergence generates distinct plastic responses in two closely related Senecio species. Evolution. 76(6). 1229–1245. 12 indexed citations

12.

Harris, Brogan J., James Clark, Dominik Schrempf, et al.. (2022). Divergent evolutionary trajectories of bryophytes and tracheophytes from a complex common ancestor of land plants. Nature Ecology & Evolution. 6(11). 1634–1643. 90 indexed citations

13.

Clark, James, Brogan J. Harris, Alexander J. Hetherington, et al.. (2022). The origin and evolution of stomata. Current Biology. 32(11). R539–R553. 64 indexed citations

14.

Walter, Greg M., Richard J. Abbott, Adrian C. Brennan, et al.. (2020). Senecio as a model system for integrating studies of genotype, phenotype and fitness. New Phytologist. 226(2). 326–344. 28 indexed citations

15.

Morris, Jennifer L., Mark N. Puttick, James Clark, et al.. (2018). The timescale of early land plant evolution. Proceedings of the National Academy of Sciences. 115(10). E2274–E2283. 606 indexed citations breakdown →

16.

Clark, James & Philip C. J. Donoghue. (2018). Whole-Genome Duplication and Plant Macroevolution. Trends in Plant Science. 23(10). 933–945. 233 indexed citations

17.

Puttick, Mark N., Joseph O’Reilly, Alastair R. Tanner, et al.. (2017). Uncertain-tree: discriminating among competing approaches to the phylogenetic analysis of phenotype data. Proceedings of the Royal Society B Biological Sciences. 284(1846). 20162290–20162290. 106 indexed citations

18.

Puttick, Mark N., James Clark, & Philip C. J. Donoghue. (2015). Size is not everything: rates of genome size evolution, notC-value, correlate with speciation in angiosperms. Proceedings of the Royal Society B Biological Sciences. 282(1820). 20152289–20152289. 68 indexed citations

19.

Clark, James, et al.. (2009). Seasonal and diel patterns of biting midges (Ceratopogonidae) and mosquitoes (Culicidae) on the Parris Island Marine Corps Recruit Depot. Journal of Vector Ecology. 34(1). 129–140. 9 indexed citations

20.

Penrose, Roger & James Clark. (1994). Discussion of Shadows of the Mind. Journal of Consciousness Studies. 1(1). 4 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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