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Research
Interests
My areas of interest are in the systematics
and evolution of tropical and sub-tropical plants. I am especially
interested in those groups whose biogeographical distributions include
islands and continental areas. I have concentrated on members of
the Asteraceae (sunflower family) and the tribe Vernonieae. Studies
have included species groups and their relationships across major
biogeographical regions in the West Indies, Central and South America
and more recently in the Old World tropics. I utilize molecularly
based variation, in particular that of chloroplast DNA (cpDNA) to
establish patterns of relationship and follow adaptive radiation.
In a study of New and Old World Vernonieae, data on cpDNA restriction
site variation have allowed broadscale verification of monophyly,
the placement of anomalous genera and recognition of a new tribe,
and clarification of long distance relationships among geographically
and historically separate lineages within the tribe. I am pursuing
my interests in evolution and biogeography with species of the Hawaiian
endemic genus Lipochaeta (Asteraceae). I am interested in variation
in rare and widespread species within the islands, and their relationship
to possible mainland progenitors. This research involves the use
of a variety of molecular techniques using nuclear and cytoplasmic
variation in order to provide a measure of population and species
level divergence and to elucidate broader phylogenetic relationships.
I am particularly interested in documenting shared genetic information
among rare and widespread species to aid in conservation of the
Hawaiian flora. |
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Selected
Publications
| Keeley,
S.C. (in press.) The Vernonieae.
In: Stevens, W. D. (ed.) Flora
of Nicaragua. Missouri Botanical
Garden. |
| Kim,
H.G., S.C. Keeley, P.S. Vroom
and R.K. Jansen. 1998. Molecular
evidence for an African origin
of the Hawaiian endemic Hesperomannia
(Asteraceae). Proceedings of the
National Academy USA 95:15440-15445. |
| Bolick,
M and S.C. Keeley. 1994. Pollen
morphology and classification
of the Vernonieae (Compositae).
Acta botanica Gallica (Societe
botanique de France) 141:279-284. |
| Keeley,
S. C. and R.K. Jansen. 1994. Chloroplast
dNA restriction site variation
in the Vernonieae (Asteraceae),
an initial appraisal of the relationship
of New and Old World taxa and
the monophyly of Vernonia. Plant
Systematics and Evolution 193:
249-265. |
| Keeley,
S.C and H.A. Mooney. 1993. Vegetation
in western North America, past
and future pp.209-234. In: H.A.
Mooney, E. R. Fuentes, and B.I.
Kronberg (eds.). Earth System
Responds to Global Change. Academic
Press., New York. Science Press. |
| Jansen,
R. K. , H.J. Michaels, R. S. Wallace,
K. Kim, S. C. Keeley, L. E. Watson,
and J. D. Palmer. 1992. Chloroplast
DNA variation in the Asteraceae:phylogenetic
and evolutionary implications.
Pp. 252-279. In: Soltis, D., P.
Soltis, and J. Doyle, (eds.).
Plant Moleculary Systematics.
Chapman and Hall, New York. |
| Bremer,
K. R.K. Jansen, PO.O. Karis, M.
Kallersjo, S.C. Keeley, K.J. Kim,
H. J. Michaels, J.D. Palmer and
R.S Wallace. 1992. Phylogeny and
classification of the Asteraceae.
Nordic Journal of Botany 12:141-148. |
| Keeley,
S.C. and R. K. Jansen. 1991. Evidence
from chloroplast DNA for the recognition
of a new tribe, the Tarchonantheae,
and the tribal placement of Pluchea
(Asteraceae). Systematic Botany
16:173-181. |
| Keeley,
S.C. and R.K. Jansen. Phylogenetic
patterns within the Vernonieae
(Asteraceae) based on chloroplast
DNA restriction site variation.
American Journal of Botany (in
review). |
| Bremer,
K., R.K. Jansen, P.O. Karis, M.
Kallersjo, S.C. Keeley, K. Kim,
H.J. Michaels, J.D. Palmer, and
R.S. Wallace. Phylogeny and classification
of the Asteraceae. Annals of the
Missouri Botanic Garden (in press). |
| Keeley,
S.C. and R.K. Jansen. 1991. Evidence
from chloroplast DNA for the recognition
of a new tribe, the Tarchonantheae,
and the tribal placement of Pluchea
(Asteraceae). Systematic Botany
16:173-181. |
| Jansen,
R.K., H.J. Michaels, R.S. Wallace,
K. Kim, S.C. Keeley, L.E. Watson,
and J.D. Palmer. 1991. Chloroplast
DNA variation in the Asteraceae:
phylogenetic and evolutionary
implications. pp. 252-279. In:
Soltis, D., P. Soltis, and J.
Doyle (eds). Plant Molecular Systematics.
Chapman and Hall, New York. |
| Keeley,
S.C. and B.L. Turner. 1990. A
preliminary cladistic analysis
of the genus Veronia (Vernonieae:
Asteraceae). Plant Systematics
and Evolution Supp. 4:45-66. |
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