Christopher J. Grassa

3.4k total citations
25 papers, 1.1k citations indexed

About

Christopher J. Grassa is a scholar working on Genetics, Plant Science and Molecular Biology. According to data from OpenAlex, Christopher J. Grassa has authored 25 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Genetics, 11 papers in Plant Science and 10 papers in Molecular Biology. Recurrent topics in Christopher J. Grassa's work include Genetic diversity and population structure (10 papers), Sunflower and Safflower Cultivation (8 papers) and Genomics and Phylogenetic Studies (6 papers). Christopher J. Grassa is often cited by papers focused on Genetic diversity and population structure (10 papers), Sunflower and Safflower Cultivation (8 papers) and Genomics and Phylogenetic Studies (6 papers). Christopher J. Grassa collaborates with scholars based in United States, Canada and Australia. Christopher J. Grassa's co-authors include Loren H. Rieseberg, Nolan C. Kane, Zhao Lai, Charles C. Davis, Sébastien Renaut, Brook T. Moyers, Rose L. Andrew, John M. Burke, John Bowers and Sam Yeaman and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Nature Communications and Scientific Reports.

In The Last Decade

Christopher J. Grassa

25 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Christopher J. Grassa United States 17 413 405 391 278 172 25 1.1k
Mats Töpel Sweden 21 158 0.4× 750 1.9× 457 1.2× 322 1.2× 208 1.2× 57 1.3k
Mika Bendiksby Norway 17 227 0.5× 487 1.2× 780 2.0× 873 3.1× 163 0.9× 50 1.4k
Mónica Moura Portugal 17 299 0.7× 284 0.7× 455 1.2× 508 1.8× 153 0.9× 62 1.0k
Tomáš Fér Czechia 22 354 0.9× 449 1.1× 566 1.4× 517 1.9× 145 0.8× 46 1.2k
Diego Bogarín Costa Rica 16 349 0.8× 934 2.3× 566 1.4× 1.0k 3.8× 159 0.9× 85 1.8k
Thannya Nascimento Soares Brazil 17 577 1.4× 250 0.6× 305 0.8× 399 1.4× 276 1.6× 62 1.2k
David E. Boufford United States 22 295 0.7× 785 1.9× 657 1.7× 943 3.4× 195 1.1× 85 1.6k
Alex D. Twyford United Kingdom 22 673 1.6× 952 2.4× 612 1.6× 900 3.2× 231 1.3× 60 1.9k
Rebecca B. Dikow United States 18 370 0.9× 518 1.3× 367 0.9× 546 2.0× 176 1.0× 41 1.3k
Ed Biffin Australia 19 171 0.4× 461 1.1× 274 0.7× 571 2.1× 177 1.0× 57 1.1k

Countries citing papers authored by Christopher J. Grassa

Since Specialization
Citations

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

Fields of papers citing papers by Christopher J. Grassa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Christopher J. Grassa

This figure shows the co-authorship network connecting the top 25 collaborators of Christopher J. Grassa. A scholar is included among the top collaborators of Christopher J. Grassa 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 Christopher J. Grassa. Christopher J. Grassa 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.
Lyra, Goia de Mattos, Christopher J. Grassa, Liming Cai, et al.. (2021). Phylogenomics, divergence time estimation and trait evolution provide a new look into the Gracilariales (Rhodophyta). Molecular Phylogenetics and Evolution. 165. 107294–107294. 30 indexed citations
2.
Davis, Charles C., Jonathan Kennedy, & Christopher J. Grassa. (2021). Back to the future: A refined single‐user photostation for massively scaling herbarium digitization. Taxon. 70(3). 635–643. 5 indexed citations
3.
Turner, Kathryn G., Kate L. Ostevik, Christopher J. Grassa, & Loren H. Rieseberg. (2021). Genomic Analyses of Phenotypic Differences Between Native and Invasive Populations of Diffuse Knapweed (Centaurea diffusa). Frontiers in Ecology and Evolution. 8. 5 indexed citations
4.
DaCosta, Jeffrey M., Christopher J. Grassa, P. R. V. Satyaki, et al.. (2020). Water lily ( Nymphaea thermarum ) genome reveals variable genomic signatures of ancient vascular cambium losses. Proceedings of the National Academy of Sciences. 117(15). 8649–8656. 40 indexed citations
5.
Hedrick, Brandon P., J. Mason Heberling, Emily K. Meineke, et al.. (2020). Digitization and the Future of Natural History Collections. BioScience. 70(3). 243–251. 183 indexed citations
6.
Marks, Rose A., Jeramiah J. Smith, Quentin Cronk, Christopher J. Grassa, & D. Nicholas McLetchie. (2019). Genome of the tropical plant Marchantia inflexa: implications for sex chromosome evolution and dehydration tolerance. Scientific Reports. 9(1). 8722–8722. 30 indexed citations
7.
Sweeney, Patrick W., Binil Starly, Paul J. Morris, et al.. (2018). Large–scale digitization of herbarium specimens: Development and usage of an automated, high–throughput conveyor system. Taxon. 67(1). 165–178. 45 indexed citations
8.
Grassa, Christopher J., et al.. (2018). Archaeobotanical studies of the Yanghai cemetery in Turpan, Xinjiang, China. Archaeological and Anthropological Sciences. 11(4). 1143–1153. 25 indexed citations
9.
Grassa, Christopher J., et al.. (2018). Organellar genomics: a useful tool to study evolutionary relationships and molecular evolution in Gracilariaceae (Rhodophyta). Journal of Phycology. 54(6). 775–787. 19 indexed citations
10.
Lee‐Yaw, Julie A., Christopher J. Grassa, Simon Joly, Rose L. Andrew, & Loren H. Rieseberg. (2018). An evaluation of alternative explanations for widespread cytonuclear discordance in annual sunflowers (Helianthus). New Phytologist. 221(1). 515–526. 108 indexed citations
11.
Grassa, Christopher J., Daniel Ebert, Nolan C. Kane, & Loren H. Rieseberg. (2016). Complete Mitochondrial Genome Sequence of Sunflower ( Helianthus annuus L.). Genome Announcements. 4(5). 14 indexed citations
12.
Hulke, Brent S., Christopher J. Grassa, John E. Bowers, et al.. (2015). A Unified Single Nucleotide Polymorphism Map of Sunflower ( L.) Derived from Current Genomic Resources. 1 indexed citations
13.
Hulke, Brent S., Christopher J. Grassa, John Bowers, et al.. (2015). A Unified Single Nucleotide Polymorphism Map of Sunflower (Helianthus annuus L.) Derived from Current Genomic Resources. Crop Science. 55(4). 1696–1702. 16 indexed citations
14.
Baute, Gregory J., Nolan C. Kane, Christopher J. Grassa, Zhao Lai, & Loren H. Rieseberg. (2015). Genome scans reveal candidate domestication and improvement genes in cultivated sunflower, as well as post‐domestication introgression with wild relatives. New Phytologist. 206(2). 830–838. 65 indexed citations
15.
Geraldes, Armando, Nima Farzaneh, Christopher J. Grassa, et al.. (2014). LANDSCAPE GENOMICS OFPOPULUS TRICHOCARPA: THE ROLE OF HYBRIDIZATION, LIMITED GENE FLOW, AND NATURAL SELECTION IN SHAPING PATTERNS OF POPULATION STRUCTURE. Evolution. 68(11). 3260–3280. 71 indexed citations
16.
Renaut, Sébastien, Christopher J. Grassa, Sam Yeaman, et al.. (2013). Genomic islands of divergence are not affected by geography of speciation in sunflowers. Nature Communications. 4(1). 1827–1827. 226 indexed citations
17.
White, Richard, Christopher J. Grassa, & Curtis A. Suttle. (2013). Draft Genome Sequence of Exiguobacterium pavilionensis Strain RW-2, with Wide Thermal, Salinity, and pH Tolerance, Isolated from Modern Freshwater Microbialites. Genome Announcements. 1(4). 16 indexed citations
18.
Andrew, Rose L., et al.. (2012). Recent nonhybrid origin of sunflower ecotypes in a novel habitat. Molecular Ecology. 22(3). 799–813. 41 indexed citations
19.
Renaut, Sébastien, Christopher J. Grassa, Brook T. Moyers, Nolan C. Kane, & Loren H. Rieseberg. (2012). The Population Genomics of Sunflowers and Genomic Determinants of Protein Evolution Revealed by RNAseq. Biology. 1(3). 575–596. 25 indexed citations
20.
Grassa, Christopher J. & Rob J. Kulathinal. (2011). Elevated Evolutionary Rates among Functionally Diverged Reproductive Genes across Deep Vertebrate Lineages. PubMed. 2011. 1–9. 11 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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