Ryan A. Thum

943 total citations
44 papers, 694 citations indexed

About

Ryan A. Thum is a scholar working on Ecology, Nature and Landscape Conservation and Genetics. According to data from OpenAlex, Ryan A. Thum has authored 44 papers receiving a total of 694 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Ecology, 18 papers in Nature and Landscape Conservation and 12 papers in Genetics. Recurrent topics in Ryan A. Thum's work include Genetic diversity and population structure (12 papers), Fish Ecology and Management Studies (11 papers) and Aquatic Ecosystems and Phytoplankton Dynamics (9 papers). Ryan A. Thum is often cited by papers focused on Genetic diversity and population structure (12 papers), Fish Ecology and Management Studies (11 papers) and Aquatic Ecosystems and Phytoplankton Dynamics (9 papers). Ryan A. Thum collaborates with scholars based in United States, South Africa and Australia. Ryan A. Thum's co-authors include R. G. Harrison, Elizabeth A. LaRue, J. Mark Brown, Robby Stoks, Julie Turgeon, Mark A. McPeek, Frances C. James, Jay T. Lennon, Carl R. Ruetz and Matthew P. Zuellig and has published in prestigious journals such as The American Naturalist, Molecular Ecology and Ecological Applications.

In The Last Decade

Ryan A. Thum

41 papers receiving 652 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryan A. Thum United States 15 375 221 174 154 135 44 694
Andrea Piotti Italy 19 278 0.7× 395 1.8× 409 2.4× 187 1.2× 45 0.3× 60 973
Bruce Riddoch Belgium 18 604 1.6× 342 1.5× 185 1.1× 118 0.8× 339 2.5× 25 882
Hendrik Segers Belgium 10 344 0.9× 178 0.8× 58 0.3× 98 0.6× 152 1.1× 22 601
Anne Charpentier France 15 289 0.8× 278 1.3× 94 0.5× 295 1.9× 33 0.2× 29 744
Nathan G. Swenson United States 6 260 0.7× 407 1.8× 70 0.4× 327 2.1× 109 0.8× 6 721
Gunnar Öhlund Sweden 8 457 1.2× 324 1.5× 119 0.7× 144 0.9× 35 0.3× 11 654
Elvira De Matthaeis Italy 21 542 1.4× 154 0.7× 476 2.7× 181 1.2× 55 0.4× 74 1.2k
Marie A. Simovich United States 15 503 1.3× 273 1.2× 133 0.8× 169 1.1× 224 1.7× 27 756
Cynthia C. Bennington United States 15 321 0.9× 397 1.8× 272 1.6× 501 3.3× 59 0.4× 20 942
Nicholas A. C. Marino Brazil 14 353 0.9× 213 1.0× 39 0.2× 210 1.4× 55 0.4× 17 646

Countries citing papers authored by Ryan A. Thum

Since Specialization
Citations

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

Fields of papers citing papers by Ryan A. Thum

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan A. Thum. 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 Ryan A. Thum. The network helps show where Ryan A. Thum may publish in the future.

Co-authorship network of co-authors of Ryan A. Thum

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan A. Thum. A scholar is included among the top collaborators of Ryan A. Thum 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 Ryan A. Thum. Ryan A. Thum 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.
Newman, Raymond M., et al.. (2025). MilfoilMapper: a web-based tool to inform Eurasian watermilfoil ( Myriophyllum spicatum ) management. Invasive Plant Science and Management. 18.
2.
Beets, James P., et al.. (2024). Response of four Vallisneria taxa to aquatic herbicides. Invasive Plant Science and Management. 17(4). 297–304.
3.
Thum, Ryan A., et al.. (2023). Confusion and ambiguity concerning the terms “resistance” and “tolerance” in aquatic plant management. Weed Science. 71(4). 279–283. 1 indexed citations
4.
Tippery, Nicholas P., et al.. (2023). Assessing the genetic diversity of Nymphoides peltata in the native and adventive range using microsatellite markers. Biological Invasions. 25(12). 3949–3963. 4 indexed citations
5.
Thum, Ryan A., et al.. (2022). Hybridization and invasiveness in Eurasian watermilfoil (Myriophyllum spicatum): is prioritizing hybrids in management justified?. Invasive Plant Science and Management. 15(1). 3–8. 5 indexed citations
6.
Ruetz, Carl R., et al.. (2020). Identification of Black Bullhead (Ameiurus melas) and Brown Bullhead (A. nebulosus) from the Western Great Lakes: Recommendations for Small Individuals. The American Midland Naturalist. 183(1). 90–104. 1 indexed citations
7.
Ruetz, Carl R., Ryan A. Thum, Charlyn Partridge, et al.. (2019). Yellow perch genetic structure and habitat use among connected habitats in eastern Lake Michigan. Ecology and Evolution. 9(16). 8922–8932. 12 indexed citations
8.
Thum, Ryan A., et al.. (2017). Survival and vegetative regrowth of Eurasian and hybrid watermilfoil following operational treatment with auxinic herbicides in Gun Lake, Michigan. Journal of Aquatic Plant Management. 55. 103–107. 5 indexed citations
9.
Sepulveda, Adam J., et al.. (2016). Potential utility of environmental DNA for early detection of Eurasian watermilfoil (Myriophyllum spicatum). Journal of Aquatic Plant Management. 54(1). 46–49. 9 indexed citations
10.
Moody, Michael L., Philip Weyl, Julie A. Coetzee, et al.. (2016). Unraveling the biogeographic origins of the Eurasian watermilfoil (Myriophyllum spicatum) invasion in North America. American Journal of Botany. 103(4). 709–718. 19 indexed citations
11.
12.
McNair, James N., et al.. (2016). Divergent responses of cryptic invasive watermilfoil to treatment with auxinic herbicides in a large Michigan lake. Lake and Reservoir Management. 32(4). 366–372. 14 indexed citations
13.
Sager, Eric P. S., et al.. (2014). Distribution of biotypes and hybrids ofMyriophyllum spicatumand associatedEuhrychiopsis leconteiin lakes of Central Ontario, Canada. Lake and Reservoir Management. 30(1). 94–104. 6 indexed citations
14.
Thum, Ryan A., et al.. (2012). Trait sorting in Daphnia colonising man‐made lakes. Freshwater Biology. 57(9). 1813–1822. 9 indexed citations
15.
Tavalire, Hannah F., et al.. (2012). Hybridization, cryptic diversity, and invasiveness in introduced variable‐leaf watermilfoil. Evolutionary Applications. 5(8). 892–900. 9 indexed citations
16.
Thum, Ryan A., et al.. (2010). Does local adaptation to resources explain genetic differentiation among Daphnia populations?. Molecular Ecology. 19(15). 3076–3087. 22 indexed citations
17.
Thum, Ryan A., et al.. (2008). Population structure of the invasive round goby (Neogobius melanostomus) along the eastern shore of Lake Michigan. Endocrine Research. 42(2). 117–124. 1 indexed citations
18.
Thum, Ryan A. & Alison M. Derry. (2008). Taxonomic implications for diaptomid copepods based on contrasting patterns of mitochondrial DNA sequence divergences in four morphospecies. Hydrobiologia. 614(1). 197–207. 21 indexed citations
19.
Turgeon, Julie, Robby Stoks, Ryan A. Thum, J. Mark Brown, & Mark A. McPeek. (2005). Simultaneous Quaternary Radiations of Three Damselfly Clades across the Holarctic. The American Naturalist. 165(4). E78–E107. 93 indexed citations
20.

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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