Sandra Knapp

17.6k citations

259 papers · 7.7k indexed · 2 hit papers · h-index 45

Impact in

Ecology, Evolution, Behavior and Systematics top 0.2%
- Plant Diversity and Evolution
- Plant and animal studies
Plant Science top 0.2%
- Chromosomal and Genetic Variations
- Plant Pathogens and Resistance

Papers in ⓘ

Ecology, Evolution, Behavior and Systematics 139
- Plant Diversity and Evolution 109
- Plant and animal studies 59
Ecological Modeling 26
- Species Distribution and Climate Change 26

Co-authors: Lynn Bohs (14 shared papers)Tiina Särkinen (32 shared papers)Mark W. Chase (18 shared papers)David M. Spooner (11 shared papers)James J. Clarkson (9 shared papers)Andrew R. Leitch (15 shared papers)Richard G. Olmstead (3 shared papers)Iris E. Peralta (6 shared papers)
Journals: Taxon (34 papers)Nature (12 papers)Botanical Journal of the Linnean Society (10 papers)Biological Conservation (7 papers)Plants People Planet (5 papers)
Partner nations: United Kingdom United States Germany

In The Last Decade

Sandra Knapp

241 papers receiving 7.3k citations

Hit Papers

align trajectories log scale

A phylogenetic framework for evolutionary study of the nightshades (Solanaceae): a dated 1000-tip tree 2013 · 417 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2013 BMC Evolutionary Biology
2013 Annual Review of Plant Biology

Peers

Countries citing papers authored by Sandra Knapp

Since Specialization

Citations

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

Fields of papers citing papers by Sandra Knapp

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside Sandra Knapp, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Sandra Knapp Line = papers co-authored together Sandra Knapp links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 259 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Fruit Development and Ripening Annual Review of Plant Biology ·Graham B. Seymour, Lars Østergaard, Natalie H. Chapman, Sandra Knapp, Cathie Martin Hit paper breakdown →	2013	491
2	A phylogenetic framework for evolutionary study of the nightshades (Solanaceae): a dated 1000-tip tree BMC Evolutionary Biology ·Tiina Särkinen, Lynn Bohs, Richard G. Olmstead, Sandra Knapp Hit paper breakdown →	2013	417
3	Solanaceae III: Taxonomy, Chemistry, Evolution Kew Bulletin ·Sandra Knapp, J. G. Hawkes, R. N. Lester, Michael Nee, N. Estrada-Ramos	1992	292
4	Tobacco to tomatoes: a phylogenetic perspective on fruit diversity in the Solanaceae Journal of Experimental Botany ·Sandra Knapp	2002	230
5	Bayesian estimation of the global biogeographical history of the Solanaceae Journal of Biogeography ·Julia Dupin, Nicholas J. Matzke, Tiina Särkinen, Sandra Knapp, Richard G. Olmstead, Lynn Bohs, Stacey D. Smith	2016	228
6	Solanaceae — a model for linking genomics with biodiversity Comparative and Functional Genomics ·Sandra Knapp, Lynn Bohs, Michael Nee, David M. Spooner	2004	172
7	Phylogenetic relationships in Nicotiana (Solanaceae) inferred from multiple plastid DNA regions Molecular Phylogenetics and Evolution ·James J. Clarkson, Sandra Knapp, Vicente F. Garcia, Richard G. Olmstead, Andrew R. Leitch, Mark W. Chase	2004	169
8	Taxonomy of wild tomatoes and their relatives (Solanum sect. Lycopersicoides, sect. Juglandifolia, sect. Lycopersicon; Solanaceae) Iris E. Peralta, David M. Spooner, Sandra Knapp	2008	164
9	Solanaceae IV. Advances in Biology and Utilization Kew Bulletin ·Sandra Knapp, Michael Nee, D. E. Symon, R. N. Lester, J P Jessop	2000	162
10	Nomenclatural changes and a new sectional classification in Nicotiana (Solanaceae) Taxon ·Sandra Knapp, Mark W. Chase, James J. Clarkson	2004	155
11	Shortcuts in systematics? A commentary on DNA-based taxonomy Trends in Ecology & Evolution ·Ole Seberg, Chris Humphries, Sandra Knapp, Dennis Wm. Stevenson, Gitte Petersen, Nikolaj Scharff, Nils M. Andersen	2003	150
12	Long‐term genome diploidization in allopolyploidNicotianasectionRepandae(Solanaceae) New Phytologist ·James J. Clarkson, K. Yoong Lim, Aleš Kovařı́k, Mark W. Chase, Sandra Knapp, Andrew R. Leitch	2005	143
13	Concerted evolution of 18-5.8-26S rDNA repeats in Nicotiana allotetraploids Biological Journal of the Linnean Society ·(unknown), Roman Matyášek, K. Yoong Lim, Kamila Skalická, B. Koukalová, Sandra Knapp, Mark W. Chase, Andrew R. Leitch	2004	142
14	Comparison of AFLPs with other markers for phylogenetic inference in wild tomatoes [Solanum L. section Lycopersicon (Mill.) Wettst.] Taxon ·David M. Spooner, Iris E. Peralta, Sandra Knapp	2005	140
15	Plant Evolution and Endemism in Andean South America: An Introduction The Botanical Review ·Kenneth R. Young, Carmen Ulloa Ulloa, James L. Luteyn, Sandra Knapp	2002	137
16	New Species of Wild Tomatoes (<I>Solanum</I> Section <I>Lycopersicon</I>: Solanaceae) from Northern Peru Systematic Botany ·Iris E. Peralta, Sandra Knapp, David M. Spooner	2005	134
17	Evolution of rDNA in Nicotiana Allopolyploids: A Potential Link between rDNA Homogenization and Epigenetics Annals of Botany ·(unknown), Martina Nešpor Dadejová, Y.K. Lim, Mark W. Chase, James J. Clarkson, Sandra Knapp, Andrew R. Leitch	2008	132
18	Indigenous diversity of Cassava: Generation, maintenance, use and loss among the Amuesha, Peruvian upper Amazon Economic Botany ·Jan Salick, Nico Cellinese, Sandra Knapp	1997	131
19	Introgressiomics: a new approach for using crop wild relatives in breeding for adaptation to climate change Euphytica ·Jaime Prohens, Pietro Gramazio, Mariola Plazas, Hannes Dempewolf, Benjamin Kilian, María José Díez, Ana Fita, F. Herraiz, Adrián Rodríguez‐Burruezo, Salvador Soler, Sandra Knapp, Santiago Vilanova	2017	131
20	Wild Relatives of the Eggplant (Solanum melongena L.: Solanaceae): New Understanding of Species Names in a Complex Group PLoS ONE ·Sandra Knapp, Maria S. Vorontsova, Jaime Prohens	2013	127

About Sandra Knapp

Sandra Knapp is a scholar working on Ecology, Evolution, Behavior and Systematics, Ecological Modeling, Plant Science, Cell Biology and Horticulture, having authored 259 papers that have together received 7.7k indexed citations. Recurring topics across this work include Plant Diversity and Evolution (109 papers), Plant and animal studies (59 papers), Plant Pathogens and Fungal Diseases (46 papers), Botany, Ecology, and Taxonomy Studies (45 papers), Plant and Fungal Species Descriptions (44 papers), Botanical Studies and Applications (31 papers), Species Distribution and Climate Change (26 papers) and Mediterranean and Iberian flora and fauna (20 papers). The work is most often cited by research in Ecology, Evolution, Behavior and Systematics (3.1k citations), Plant Science (4.6k citations), Ecological Modeling (447 citations), Horticulture (58 citations) and Molecular Biology (3.1k citations). Sandra Knapp has collaborated with scholars based in United Kingdom, United States and Germany. Frequent co-authors include Lynn Bohs, Tiina Särkinen, Mark W. Chase, David M. Spooner, James J. Clarkson, Andrew R. Leitch, Richard G. Olmstead, Iris E. Peralta, Michael Nee and Natalie H. Chapman. Their work appears in journals such as Taxon, Nature, Botanical Journal of the Linnean Society, Biological Conservation and Plants People Planet.

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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