Harvey E. Ballard

1.2k total citations
55 papers, 991 citations indexed

About

Harvey E. Ballard is a scholar working on Ecology, Evolution, Behavior and Systematics, Molecular Biology and Plant Science. According to data from OpenAlex, Harvey E. Ballard has authored 55 papers receiving a total of 991 indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Ecology, Evolution, Behavior and Systematics, 37 papers in Molecular Biology and 25 papers in Plant Science. Recurrent topics in Harvey E. Ballard's work include Plant Diversity and Evolution (27 papers), Plant and Fungal Species Descriptions (23 papers) and Biochemical and Structural Characterization (23 papers). Harvey E. Ballard is often cited by papers focused on Plant Diversity and Evolution (27 papers), Plant and Fungal Species Descriptions (23 papers) and Biochemical and Structural Characterization (23 papers). Harvey E. Ballard collaborates with scholars based in United States, Norway and Brazil. Harvey E. Ballard's co-authors include Kenneth J. Sytsma, Robert R. Kowal, J. Forrest Meekins, Brian C. McCarthy, Thomas Marcussen, Isabelle Dajoz, Sophie Nadot, Jiří Danihelka, Anne K. Brysting and Bengt Oxelman and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Evolution.

In The Last Decade

Harvey E. Ballard

49 papers receiving 935 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Harvey E. Ballard United States 15 603 589 398 113 80 55 991
M. Dolores Lledó United Kingdom 17 642 1.1× 919 1.6× 570 1.4× 144 1.3× 73 0.9× 24 1.2k
Lyn A. Craven Australia 15 307 0.5× 408 0.7× 358 0.9× 70 0.6× 77 1.0× 43 735
Chodon Sass United States 11 495 0.8× 461 0.8× 240 0.6× 198 1.8× 52 0.7× 17 842
Dennis W. Stevenson United States 15 641 1.1× 930 1.6× 344 0.9× 80 0.7× 45 0.6× 31 1.2k
Tatiana T. Souza‐Chies Brazil 17 415 0.7× 927 1.6× 606 1.5× 152 1.3× 101 1.3× 63 1.2k
Elliot M. Gardner United States 13 562 0.9× 621 1.1× 372 0.9× 302 2.7× 93 1.2× 32 1.0k
Jens G. Rohwer Germany 20 1.1k 1.8× 1.4k 2.4× 500 1.3× 113 1.0× 94 1.2× 47 1.8k
Volker Wissemann Germany 16 389 0.6× 485 0.8× 619 1.6× 239 2.1× 46 0.6× 46 930
Niroshini Epitawalage United Kingdom 10 419 0.7× 474 0.8× 285 0.7× 166 1.5× 60 0.8× 15 715
Dianella G. Howarth United States 20 764 1.3× 639 1.1× 622 1.6× 175 1.5× 83 1.0× 31 1.2k

Countries citing papers authored by Harvey E. Ballard

Since Specialization
Citations

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

Fields of papers citing papers by Harvey E. Ballard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Harvey E. Ballard. 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 Harvey E. Ballard. The network helps show where Harvey E. Ballard may publish in the future.

Co-authorship network of co-authors of Harvey E. Ballard

This figure shows the co-authorship network connecting the top 25 collaborators of Harvey E. Ballard. A scholar is included among the top collaborators of Harvey E. Ballard 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 Harvey E. Ballard. Harvey E. Ballard 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.
2.
Marcussen, Thomas, et al.. (2022). A Revised Phylogenetic Classification for Viola (Violaceae). Plants. 11(17). 2224–2224. 29 indexed citations
3.
Gonzáles, Paúl, et al.. (2022). Viola ornata and Viola longibracteolata (Violaceae, subgen. Neoandinium), two rare, new rosulate species from southern Peru. Phytotaxa. 571(1). 52–64. 2 indexed citations
4.
Bowman, Megan J., et al.. (2019). Transcriptomics Identifies Modules of Differentially Expressed Genes and Novel Cyclotides in Viola pubescens. Frontiers in Plant Science. 10. 156–156. 14 indexed citations
5.
Ballard, Harvey E.. (2017). <i>Trimerotropis Huroniana</i> (Orthoptera: Acrididae), a New Record for Wisconsin. The Great Lakes Entomologist. 22(1). 1 indexed citations
6.
Wang, Yunjing, et al.. (2017). The potential role of two LEAFY orthologs in the chasmogamous/cleistogamous mixed breeding system ofViola pubescens(Violaceae)1. The Journal of the Torrey Botanical Society. 144(2). 206–217. 3 indexed citations
7.
Ballard, Harvey E., et al.. (2015). Ixchelia, a new genus of Violaceae from Mexico and Mesoamerica. Brittonia. 67(4). 273–283. 6 indexed citations
8.
Ballard, Harvey E., et al.. (2015). Afrohybanthus (Violaceae), a new genus for a distinctive and widely distributed Old World hybanthoid lineage. Phytotaxa. 230(1). 7 indexed citations
9.
Marcussen, Thomas, Kjetill S. Jakobsen, Jiří Danihelka, et al.. (2011). Inferring Species Networks from Gene Trees in High-Polyploid North American and Hawaiian Violets (Viola, Violaceae). Systematic Biology. 61(1). 107–126. 91 indexed citations
10.
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
11.
Spooner, David M., Flor Rodríguez, Zsolt Polgár, Harvey E. Ballard, & Shelley Jansky. (2008). Genomic Origins of Potato Polyploids: GBSSI Gene Sequencing Data. Crop Science. 48(S1). 59 indexed citations
12.
Wyatt, Sarah E. & Harvey E. Ballard. (2007). Arabidopsis Ecotypes: A Model for Course Projects in Organismal Plant Biology & Evolution. The American Biology Teacher. 69(8). 477–481. 1 indexed citations
13.
Wyatt, Sarah E. & Harvey E. Ballard. (2007). Arabidopsis Ecotypes:A Model for Course Projects in Organismal Plant Biology & Evolution. The American Biology Teacher. 69(8). 477–481. 3 indexed citations
14.
Ballard, Harvey E., et al.. (2006). EVIDENCE FOR HYBRIDIZATION BETWEEN TWO SYMPATRIC VIOLET SPECIES, VIOLA GRAHAMII AND V. HOOKERIANA (VIOLACEAE), IN CENTRAL MEXICO. Biodiversity Heritage Library (Smithsonian Institution). 5 indexed citations
15.
Ballard, Harvey E., et al.. (2006). Influence of annual fluctuations in environmental conditions on chasmogamous flower production in Viola striata1. The Journal of the Torrey Botanical Society. 133(2). 312–320. 19 indexed citations
16.
Ballard, Harvey E., et al.. (2004). CLIFF CUDWEED AT SPECIFIC RANK IN PSEUDOGNAPHALIUM (ASTERACEAE: GNAPHALIEAE). Biodiversity Heritage Library (Smithsonian Institution). 4 indexed citations
17.
Ballard, Harvey E., et al.. (2003). Hekkingia (Violaceae), a New Arborescent Violet Genus from French Guiana, with a Key to Genera in the Family. BioOne Complete (BioOne). 13 indexed citations
18.
Rothwell, Gar W., et al.. (2003). Molecular phylogenetic relationships among Lemnaceae and Araceae using the chloroplast trnL–trnF intergenic spacer. Molecular Phylogenetics and Evolution. 30(2). 378–385. 47 indexed citations
19.
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). 1521–1532. 95 indexed citations
20.
Ballard, Harvey E.. (1994). FAMILIA VIOLACEAE. 2 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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