Kenneth J. Sytsma

17.8k total citations · 3 hit papers
150 papers, 10.7k citations indexed

About

Kenneth J. Sytsma is a scholar working on Ecology, Evolution, Behavior and Systematics, Molecular Biology and Plant Science. According to data from OpenAlex, Kenneth J. Sytsma has authored 150 papers receiving a total of 10.7k indexed citations (citations by other indexed papers that have themselves been cited), including 124 papers in Ecology, Evolution, Behavior and Systematics, 87 papers in Molecular Biology and 49 papers in Plant Science. Recurrent topics in Kenneth J. Sytsma's work include Plant Diversity and Evolution (108 papers), Plant and Fungal Species Descriptions (77 papers) and Plant and animal studies (64 papers). Kenneth J. Sytsma is often cited by papers focused on Plant Diversity and Evolution (108 papers), Plant and Fungal Species Descriptions (77 papers) and Plant and animal studies (64 papers). Kenneth J. Sytsma collaborates with scholars based in United States, Canada and China. Kenneth J. Sytsma's co-authors include Thomas J. Givnish, L. D. Gottlieb, Jay B. Walker, Bryan T. Drew, Jocelyn C. Hall, J. Chris Pires, Paul E. Berry, Molly Nepokroeff, Elena Conti and David Baum and has published in prestigious journals such as Proceedings of the National Academy of Sciences, PLoS ONE and Trends in Ecology & Evolution.

In The Last Decade

Kenneth J. Sytsma

148 papers receiving 10.0k 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.

Molecular Evolution and Adaptive Radiation.

1998 789 citations Thomas J. Givnish, Kenneth J. Sytsma et al. Systematic Botany profile →
Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: Insights from an eight‐locus plastid phylogeny

2011 389 citations Thomas J. Givnish, Timothy M. Evans et al. American Journal of Botany profile →
Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae

2013 299 citations Thomas J. Givnish, Timothy M. Evans et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kenneth J. Sytsma United States	61	7.6k	5.2k	4.0k	1.6k	1.1k	150	10.7k
Jun Wen United States	55	7.3k 1.0×	6.3k 1.2×	5.1k 1.3×	1.9k 1.2×	1.0k 0.9×	356	11.7k
Bruce G. Baldwin United States	44	5.9k 0.8×	3.9k 0.8×	3.7k 0.9×	1.7k 1.1×	1.2k 1.1×	105	8.7k
Joachim W. Kadereit Germany	44	5.3k 0.7×	3.5k 0.7×	4.1k 1.0×	2.1k 1.3×	940 0.8×	178	8.5k
Tod F. Stuessy Austria	51	6.6k 0.9×	4.0k 0.8×	6.3k 1.6×	2.8k 1.7×	910 0.8×	332	12.4k
Michael F. Fay United Kingdom	67	9.4k 1.2×	7.0k 1.4×	6.5k 1.6×	2.9k 1.8×	1.7k 1.5×	327	14.7k
Elizabeth A. Zimmer United States	49	5.3k 0.7×	5.2k 1.0×	3.1k 0.8×	1.4k 0.9×	404 0.4×	105	8.5k
Félix Forest United Kingdom	47	5.0k 0.7×	3.1k 0.6×	2.6k 0.7×	1.4k 0.8×	1.6k 1.4×	205	8.0k
Steven R. Manchester United States	47	7.3k 1.0×	4.7k 0.9×	3.3k 0.8×	759 0.5×	903 0.8×	278	9.0k
Susana Magallón Mexico	36	4.5k 0.6×	2.7k 0.5×	1.9k 0.5×	880 0.5×	1.1k 1.0×	69	6.3k
Victor A. Albert United States	52	4.5k 0.6×	6.4k 1.2×	5.9k 1.5×	1.4k 0.9×	370 0.3×	127	10.2k

Countries citing papers authored by Kenneth J. Sytsma

Since Specialization

Citations

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

Fields of papers citing papers by Kenneth J. Sytsma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kenneth J. Sytsma. 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 Kenneth J. Sytsma. The network helps show where Kenneth J. Sytsma may publish in the future.

Co-authorship network of co-authors of Kenneth J. Sytsma

This figure shows the co-authorship network connecting the top 25 collaborators of Kenneth J. Sytsma. A scholar is included among the top collaborators of Kenneth J. Sytsma 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 Kenneth J. Sytsma. Kenneth J. Sytsma 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

Rose, Jeffrey P., Ricardo Kriebel, Jesús Guadalupe González‐Gallegos, et al.. (2021). Sage Insights Into the Phylogeny of Salvia: Dealing With Sources of Discordance Within and Across Genomes. Frontiers in Plant Science. 12. 767478–767478. 20 indexed citations

Givnish, Thomas J., Ricardo Kriebel, Jeffrey P. Rose, et al.. (2020). Adaptive associations among life history, reproductive traits, environment, and origin in the Wisconsin angiosperm flora. American Journal of Botany. 107(12). 1677–1692. 5 indexed citations

Spalink, Daniel, et al.. (2019). Phylogeography, population genetics and distribution modelling reveal vulnerability of Scirpus longii (Cyperaceae) and the Atlantic Coastal Plain Flora to climate change. Molecular Ecology. 28(8). 2046–2061. 7 indexed citations

Spalink, Daniel, Marcial Escudero, Andrew L. Hipp, et al.. (2018). The spatial structure of phylogenetic and functional diversity in the United States and Canada: An example using the sedge family (Cyperaceae). Journal of Systematics and Evolution. 56(5). 449–465. 23 indexed citations

Spalink, Daniel, Ricardo Kriebel, Pan Li, et al.. (2018). Spatial phylogenetics reveals evolutionary constraints on the assembly of a large regional flora. American Journal of Botany. 105(11). 1938–1950. 19 indexed citations

Drew, Bryan T., Jesús Guadalupe González‐Gallegos, Chun‐Lei Xiang, et al.. (2017). Salvia united: The greatest good for the greatest number. Taxon. 66(1). 133–145. 162 indexed citations

Drew, Bryan T., et al.. (2013). Systematics, biogeography, and character evolution of Sparganium (Typhaceae): Diversification of a widespread, aquatic lineage. American Journal of Botany. 100(10). 2023–2039. 34 indexed citations

Givnish, Thomas J., et al.. (2013). Phylogeny, Floral Evolution, and Inter-Island Dispersal in Hawaiian Clermontia (Campanulaceae) Based on ISSR Variation and Plastid Spacer Sequences. PLoS ONE. 8(5). e62566–e62566. 18 indexed citations

Drew, Bryan T. & Kenneth J. Sytsma. (2012). Phylogenetics, biogeography, and staminal evolution in the tribe Mentheae (Lamiaceae). American Journal of Botany. 99(5). 933–953. 145 indexed citations

10.

Drew, Bryan T. & Kenneth J. Sytsma. (2011). Testing the Monophyly and Placement of Lepechinia in the Tribe Mentheae (Lamiaceae). Systematic Botany. 36(4). 1038–1049. 57 indexed citations

11.

Evans, Timothy M., Kenneth J. Sytsma, Robert B. Faden, & Thomas J. Givnish. (2009). Phylogenetic Relationships in the Commelinaceae: II. A Cladistic Analysis of rbcL Sequences and Morphology. Systematic Botany. 28(2). 270–292. 34 indexed citations

12.

Havran, J. C., Kenneth J. Sytsma, & Harvey E. Ballard. (2009). Evolutionary relationships, interisland biogeography, and molecular evolution in the Hawaiian violets (Viola: Violaceae). American Journal of Botany. 96(11). 2087–2099. 24 indexed citations

13.

Walker, Jay B., Kenneth J. Sytsma, Jens Treutlein, & Michaël Wink. (2004). Salvia (Lamiaceae) is not monophyletic: implications for the systematics, radiation, and ecological specializations of Salvia and tribe Mentheae. American Journal of Botany. 91(7). 1115–1125. 319 indexed citations

14.

Givnish, Thomas J., Kendra C. Millam, Timothy M. Evans, et al.. (2004). Ancient Vicariance or Recent Long‐Distance Dispersal? Inferences about Phylogeny and South American–African Disjunctions in Rapateaceae and Bromeliaceae Based onndhF Sequence Data. International Journal of Plant Sciences. 165(S4). S35–S54. 186 indexed citations

15.

Conti, Elena, Frank Rutschmann, Torsten Eriksson, Kenneth J. Sytsma, & David Baum. (2004). CALIBRATION OF MOLECULAR CLOCKS AND THE BIOGEOGRAPHIC HISTORY OF CRYPTERONIACEAE: A REPLY TO MOYLE. Evolution. 58(8). 1874–1874. 1 indexed citations

16.

Nepokroeff, Molly, Kenneth J. Sytsma, Warren L. Wagner, & Elizabeth A. Zimmer. (2003). Reconstructing Ancestral Patterns of Colonization and Dispersal in the Hawaiian Understory Tree Genus Psychotria (Rubiaceae): A Comparison of Parsimony and Likelihood Approaches. Systematic Biology. 52(6). 820–838. 43 indexed citations

17.

Ballard, Harvey E. & Kenneth J. Sytsma. (2000). EVOLUTION AND BIOGEOGRAPHY OF THE WOODY HAWAIIAN VIOLETS (VIOLA, VIOLACEAE): ARCTIC ORIGINS, HERBACEOUS ANCESTRY AND BIRD DISPERSAL. Evolution. 54(5). 1521–1521. 9 indexed citations

18.

Smith, James F. & Kenneth J. Sytsma. (1994). Evolution in the Andean Epiphytic Genus Columnea (Gesneriaceae). Part I. Morphological Variation. Systematic Botany. 3 indexed citations

19.

Nakasone, Karen K. & Kenneth J. Sytsma. (1993). Biosystematic Studies on Phlebia Acerina, P. Rufa , and P. Radiata in North America. Mycologia. 85(6). 996–1016. 19 indexed citations

20.

Sytsma, Kenneth J., et al.. (1990). Evolution of Populus nigra (Sect. Aigeiros): Introgressive Hybridization and the Chloroplast Contribution of Populus alba (Sect. Populus). American Journal of Botany. 77(9). 1176–1176. 43 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