Dalling, J. W., K. Winter, J. D. Nason, S. P. Hubbell, D. A. Murawski and J. L. Hamrick. 2001. The unusual life history of Alseis blackiana: A shade-persistent pioneer tree? Ecology 82:933-945.

J. L. Hamrick. 2001. Breeding patterns of a tropical dry forest tree species, Enterolobium cyclocarpum, in disturbed and undisturbed habitats. Pp 291-294. In Ganeshaiah, K. N., R. Uma Shaanker and K. S. Bawa (eds.). Tropical Ecosystems: Structure, Diversity and Human Welfare. Oxford and IBH Publ. Co., New Delhi.

Godt, M. J. W., J. L. Hamrick, M. A. Edwards-Burke and J. H. Williams. 2001. Comparisons of genetic diversity in white spruce (Picea glauca) and jack pine (Pinus barksiana) seed orchards with natural populations. Can. J. For. Res. 31:943-949.

Nassar, J. M., J. L. Hamrick and T. H. Fleming. 2001. Genetic variation and population structure of the mixed-mating cactus, Melocactus curvispinus (Cactaceae). Heredity 87:69-79.

Parker, K. C., J. L. Hamrick, A. J. Parker and J. D. Nason. 2001. Fine-scale genetic structure in Pinus clausa (Pinaceae) populations: effects of disturbance history. Heredity 87:99-113.

Apsit, V. J., J. L. Hamrick and J. D. Nason. 2001. Breeding population size of a fragmented population of a Costa Rican dry forest tree species. J. Hered. 92:415-420.

Fleming, T. H., C. T. Sahley, J. N. Holland, J. D. Nason and J. L. Hamrick. 2001. Sonoran desert columnar cacti and the evolution of generalized pollination systems. Ecol. Mono. 71:511-530.

Burke, J. M. and J. L. Hamrick. 2002. Genetic variation and evidence of hybridization in the genus Rhus (Anacardiaceae). Journal of Heredity 93:37-41.

Jorgensen, S., J. L. Hamrick and P. V. Wells. 2002. Regional patterns of genetic diversity in Pinus flexilis (Pinaceae) reveal complex species history. Am. J. Bot. 89:792-800.

Nassar, J. M., J. L. Hamrick and T. H. Fleming. 2002. Allozyme diversity and genetic structure of the leafy cactus (Pereskia guamacho [Cactaceae]). J. Hered. 93:193-200.

Hamrick, J. L., J. D. Nason, T. H. Fleming and J. M. Nassar. 2002. Genetic diversity in columnar cacti. pp 122-133. In. Columnar Cacti and Their Mutualists: Evolution, Ecology and Conservation. Fleming, T. H. and A. Valiete-Banuet (eds.). University of Arizona Press, Tucson Arizona.

Nason, J. D., J. L. Hamrick and T. H. Fleming. 2002. Historical vicariance and postglacial colonization effects on the evolution of genetic structure in Lophocereus, a Sonoran Desert columnar cactus. Evolution 56:2214-2226.

Dvorak, W. S., J. L. Hamrick, B. J. Furman, G. R. Hodge and A. P. Jordan. 2002. Conservation strategies for Pinus maximinoi based on provenance, RAPD and allozyme information. For. Gen. 9:263-274.

Erickson, D. L. and J. L. Hamrick. 2003. Genetic and clonal diversity for Myrica cerifera along a spatiotemporal island chronosequence. Heredity 90:25-32.

Irwin, A. J., J. L. Hamrick, M. J. W. Godt and P. E. Smouse. 2003. A multiyear estimate of the effective pollen donor pool for Albizia julibrissin. Heredity 90:187-194.

Hufford, K. M. and J. L. Hamrick. 2003. Viability selection at three early life stages of the tropical tree, Platypodium elegans (Fabaceae, Papilionoideae). Evolution 57:518-526.

Galloway, L. F., J. R. Etterson and J. L. Hamrick. 2003. Outcrossing rate and inbreeding depression in the herbaceous autotetraploid, Campanula americana. Heredity 90:308-315.

Nassar, J. M., J. L. Hamrick and T. H. Fleming. 2003. Population genetic structure of Venezuelan chiropterophilous columnar cacti (Cactaceae). Am. J. Bot. 90:1628-1637.