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Davis, Jerrold I
Cornell Faculty Member
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Research
research overview
- My principal area of interest is systematic biology, and within this area, my research is focused on systematics of the grass family (Poaceae) and other monocots. I am engaged in studies of phylogenetic relationships within the grass family (Poaceae) and across monocots as a whole, using molecular, genomic, and morphological character sets. I also work on species-level problems, including the development of appropriate methods for inferring species boundaries on the basis of population variation patterns. I have employed these methods in my studies of species boundaries in the grass genus Puccinellia, and these analyses have contributed to my floristic studies of this genus.
research activities
principal investigator on
keywords
- Poaceae
- biodiversity
- evolution
- grasses
- monocots
- phylogenetics
- systematics
- taxonomy
submitted impact statement
Publications
individual publications
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academic article
- ABC1K atypical kinases in photosynthetic organisms; filling the organellar kinase void.. Trends in Plant Science. 17:546-555. 2012
- Comparative floral development in Lithospermum L. (Boraginaceae) and implications for the evolution and development of heterostyly. . American Journal of Botany. 99:797-805. 2012
- Molecular phylogenetics, molecular evolution, and patterns of clade support in Lithospermum (Boraginaceae) and related taxa.. Systematic Botany. 37:490-506. 2012
- Phylogeny of the Asparagales, based on three plastid and two mitochondrial genes. . American Journal of Botany. 99:875-889. 2012
- The plastid genome of the mycoheterotrophic Corallorhiza striata (Orchidaceae) is in the relatively early stages of degradation.. American Journal of Botany. 99:1513-1523. 2012
- Subunit stoichiometry, evolution, and functional implications of an asymmetric plant plastid ClpP/R protease complex in Arabidopsis. . The Plant Cell. 23:2348-2361. 2011
- Are Substitution Rates and RNA Editing Correlated?. BMC Evolutionary Biology. 10:349. 2010
- Branch support via Resampling: an Empirical Study. Cladistics. 26:643-656. 2010
- Migration of Endpoints of Two Genes Relative to Boundaries Between Regions of the Plastid Genome in the Grass Family (Poaceae). Americal Journal of Botany. 97:874-892. 2010
- Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships. Brittonia. 61:101-111. 2009
- A phylogenetic analysis of Poaceae tribe Poeae sensu lato based on morphological characters and sequence data from three plastid-encoded genes: evidence for reticulation, and a new classification for the tribe. Kew Bulletin. 62:425-454. 2007
- A phylogenetic analysis of the grasses (Poaceae), with attention to subfamily Pooideae and structural features of the plastid and nuclear genomes, including an intron loss in GBSSI. Aliso. 23:325-338. 2007
- Morphology of Hydatellaceae, an anomalous aquatic family recently recognized as an early-divergent angiosperm lineage. American Journal of Botany. 94:1073-1092. 2007
- Phylogeny of the grasses (Poaceae) revisited. Aliso. 23:237-247. 2007
- Are mitochondrial genes useful for the analysis of monocot relationships?. Taxon. 55:857-870. 2006
- Mitochondrial data in monocot phylogenetics. Aliso. 22:52-62. 2006
- Multigene analyses of monocot relationships: a summary. Aliso. 22:63-75. 2006
- Phylogenetics of Liliales: summarized evidence from combined analyses of five plastid and one mitochondrial loci. Aliso. 22:559-565. 2006
- Phylogeny, genome size, and chromosome evolution of Asparagales. Aliso. 22:287-304. 2006
- RNA editing and phylogenetic reconstruction in two monocot mitochondrial genes. Taxon. 55:871-886. 2006
- A phylogeny of the monocots, as inferred from rbcL and atpA sequence variation, and a comparison of methods for calculating jackknife and bootstrap values. Systematic Botany. 29:467-510. 2004
- Character-state space versus rate of evolution in phylogenetic inference. Cladistics. 20:191-204. 2004
- Floral organogenesis in Plowmanianthus (Commelinaceae). International Journal of Plant Science. 165:511-519. 2004
- A cladistic analysis of Atripliceae (Chenopodiaceae) based on morphological data. J. Torrey Bot. Soc. 128:297-319. 2001
- Phylogeny and subfamilial classification of the grasses (Poaceae). Annals Missouri Botanical Garden. 88:373-457. 2001
- Phylogeny of the Celastraceae inferred from 26S nuclear ribosomal DNA, phytochrome B, rbcL, atpB, and morphology. Molecular Phylogenetics and Evolution. 19:353-366. 2001
- Data decisiveness, data quality, and incongruence in phylogenetic analysis: an example from the monocotyledons using mitochondrial atpA sequences. Systematic Biology. 47:282-310. 1998
- Phylogenetics and character evolution in the grass family (Poaceae): Simultaneous analysis of morphological and chloroplast DNA restriction site character sets. Botanical Review. 64:1-85. 1998
- Evolution, evidence, and the role of species concepts in phylogenetics. Systematic Botany. 22:373-403. 1997
- Species concepts, molecular variation, and phylogenetic analysis. BioScience. 46:502-511. 1996
- A phylogenetic structure for the monocotyledons, as inferred from chloroplast DNA restriction site variation, and a comparison of measures of clade support. Systematic Botany. 20:503-527. 1995
- Empoasca fabae (Homoptera: Cicadellidae): identification and population studies with allozyme electrophoresis. Environmental Entomology. 24:1109-1114. 1995
- Species concepts and phylogenetic analysis - Introduction. Systematic Botany. 20:555-559. 1995
- Phylogenetic relationships among Puccinellia and allied genera of Poaceae as inferred from chloroplast DNA restriction site variation. Americal Journal of Botany. 81:119-126. 1994
- Character removal as a means for assessing stability of clades. Cladistics. 9:201-210. 1993
- Cladistic characters and cladogram stability. Systematic Botany. 18:188-196. 1993
- Isozyme variation and species delimitation among diploid populations of the Puccinellia nuttalliana complex (Poaceae): Character fixation and the discovery of phylogenetic species. Taxon. 42:585-599. 1993
- Phylogenetic structure in the grass family, as determined from chloroplast DNA restriction site variation. Americal Journal of Botany. 80:1444-1454. 1993
- Puccinellia howellii (Poaceae) is genetically distinct. Madroño. 40:202-208. 1993
- Systematic inferences from isozyme variation in arctic and alpine caespitose Festuca (Poaceae). Americal Journal of Botany. 80:76-82. 1993
- Chloroplast DNA inversions and the origin of the grass family (Poaceae). Proceedings at the National Academy of Science USA. 89:7722-7726. 1992
- Populations, genetic variation, and the delimitation of phylogenetic species. Systematic Biology. 41:421-435. 1992
- A note on North American Torreyochloa (Poaceae), including a new combination. Phytologia. 70:361-365. 1991
- Isozyme variation and species delimitation in the Puccinellia nuttalliana complex (Poaceae): an application of the phylogenetic species concept. Systematic Botany. 16:431-445. 1991
- Polymorphic taxa, missing values, and cladistic analysis. Cladistics. 7:233-241. 1991
- A phylogenetic analysis of chloroplast DNA restriction site variation in Poaceae subfamily Pooideae. Plant Systematics and Evolution. 172:65-75. 1990
- Puccinellia howellii (Poaceae), a new species from California. Madroño. 37:55-58. 1990
- Origins of heterospory and the seed habit: the role of heterochrony. Taxon. 38:1-11. 1989
- Genetic and environmental contributions to multivariate morphological pattern in Puccinellia (Poaceae). Canad. J. Bot. 66:2436-2444. 1988
- Genetic and environmental determination of leaf epidermal anatomy in Puccinellia (Poaceae). Americal Journal of Botany. 74:1744-1749. 1987
- Introgression in Central American Phytolacca (Phytolaccaceae). Americal Journal of Botany. 72:1944-1953. 1985
- Morphological variation and speciation. Systematic Botany. 10:417-425. 1985
- Phenotypic plasticity and the selection of taxonomic characters in Puccinellia (Poaceae). Systematic Botany. 8:341-353. 1983
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article
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book
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booksection
- Puccinellia. Vol. 24. 2007
- Torreyochloa. Vol. 24. 2007
- Monocots . Vol. 3. 2000
- Speciation. Vol. 4. 2000
- Species. Vol. 4. 2000
- Puccinellia 1994
- Torreyochloa 1994
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chapter
- Puccinellia. The Jepson Manual. 1483-1484. 2012
- Torreyochloa. The Jepson Manual. 1496. 2012
- The limits of conventional cladistic analysis. Parsimony, Phylogeny, and Genomics. 119-147. 2005
- Poaceae. Flowering Plants of the Neotropics. 470-473. 2004
- Monophyly, populations, and species. Molecular systematics and plant evolution. 139-170. 1999
- Homology in molecular phylogenetics: a parsimony perspective. Molecular Systematics of Plants. 101-131. 1998
- Molecular variation and the delimitation of species. The impact of plant molecular genetics. 173-184. 1996
- Phylogenetic relationships among palms: cladistic analyses of morphological and chloroplast DNA restriction site variation. Monocotyledons: systematics and evolution. 623-661. 1995
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conference paper
- Alternative cooling of dairy cows by udder wetting.. ASABE Paper No. 12-133-7620. 2012
- A phylogenetic analysis of the monocotyledons based on morphological and molecular character sets, with comments on the placement of Acorus and Hydatellaceae. Monocots - Systematics and Evolution - Vol. 1 of Proceedings of the Second International Conference on the Comparative Biology of the Monocots, Sydney, September 1998. 17-24. 2000
- A phylogeny of the grass family (Poaceae), as inferred from eight character sets. Grasses - Systematics and Evolution - Vol. 2 of Proceedings of the Second International Conference on the Comparative Biology of the Monocots, Sydney, September 1998. 3-7. 2000
- Phylogenetic structure in Poaceae subfamily Pooideae as inferred from molecular and morphological characters: misclassification versus reticulation. Grasses - Systematics and Evolution - Vol. 2 of Proceedings of the Second International Conference on the Comparative Biology of the Monocots, Sydney, September 1998. 61-74. 2000
- New perspectives on the nature of species. Proceedings of the 22nd International Ornithological Congress, Durban. 1505-1518. 1999
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document part
- A cladistic analysis of Poaceae subfamily Pooideae. 52. 1998
- A phylogenetic analysis of the monocotyledons, based on morphological and molecular character sets. 18. 1998
- A phylogeny of the grass family (Poaceae), as inferred from eight character sets. 18. 1998
- Characters and character states: decisions and coding in the monocots. 53. 1998
- Proposal for a subfamilial reclassification of the Poaceae. 15. 1998
- Genetic structure of grass populations: implications for studies of population and species diversity. 37. 1995
- Phylogenetic relationships among palms. 193. 1994
- Species concepts and the progress of systematics. 116. 1993
- The generic concept in the grass family (Poaceae). 716. 1987
- Patterns of speciation in North American Puccinellia (Poaceae). 25. 1985
- Morphological variation and speciation. 151-152. 1984
- Puccinellia 1993
- Torreyochloa 1993
Teaching
teaching activities
- BIOPL-3590: Biology of Grasses - Spring 2013
- BIOPL-7490: Graduate Research in Botany - Spring 2013
- BIOPL-7490: Graduate Research in Botany - Fall 2012
- BIOPL-2480: Vascular Plant Systematics - Spring 2012
- BIOPL-7490: Graduate Research in Botany - Spring 2012
- BIOPL-7490: Graduate Research in Botany - Fall 2011
Service
service to the profession
- Willi Hennig Society Council Member 2005 -
- American Society of Plant Taxonomists Member 2008 - 2009
- Botanical Society of America Member 2008 - 2009
- Society of Systematic Biologists Member 2008 - 2009
- Willi Hennig Society Faculty Fellow 2008 - 2009
- Systematics Association Member 2007 - 2009
- Professional Accomplishment Evaluation Committee, National Museum of Natural History, Smithsonian Institution Member - 2007
- Willi Hennig Society, Marie Stopes Award Selection Committee Committee Member - 2007
- Committee on Committees, Botanical Society of America Committee Member 2000 - 2003
- Student Endowment Committee, American Society of Plant Taxonomists Committee Member 2000 - 2003
- Nominating Committee, American Society of Plant Taxonomists Committee Member 1996 - 1997
- Publicity Committee, American Society of Plant Taxonomists Chairperson 1992 - 1993
- Publicity Committee, American Society of Plant Taxonomists Committee Member 1990 - 1993
- Systematics Agenda 2000, Subcommittee on Speciation and Evolutionary Analysis Committee Member - 1991
- BSA-Systematics Section to Research Support Liaison Committee in Ecology, Evolution, and Systematics Representative - 1987
reviewer or editor for
- National Science Foundation, Biodiversity Surveys and Inventories / Planetary Biodiversity Inventories Panel
- National Science Foundation, Special Emphasis Panel for Dissertation Improvement Proposals
- National Science Foundation, Special Emphasis Panel for Dissertation Improvement Proposals
- Systematic Botany Monographs
Background
education and training
- Ph.D. in Botany, University of Washington 1983
- M.S. in Botany, University of Vermont 1978
- B.S. in Botany, University of Maryland 1975
Other
college
- CALS
research keyword
- Poaceae
- biodiversity
- evolution
- grasses
- monocots
- phylogenetics
- systematics
- taxonomy
name prefix
- Dr.