My research interests focus on the biogeography and diversification of birds with special emphasis on the Neotropical and Oriental regions. I am specifically interested in the role of geological and climatic events in the buildup of biodiversity and promotion of the latitudinal diversity gradient. Current projects investigate: 1) how rates of morphological and behavioral evolution vary across latitudinal gradients, 2) speciation and extinction rates across latitudinal gradients, 3) the effect of Pleistocene glaciation in promoting speciation in temperate and tropical regions, 4) the roles of dispersal and vicariance in generating New World patterns of endemism, 5) the impact of the formation of the Isthmus of Panama on interchange between Central America and South America, 6) phylogeography of several Neotropical superspecies complexes and 7) utility of avian molecular clocks
PhySim 1.0 Phylogenetic Tree Simulation Package: R functions to simulate birth death phylogenetic trees while correcting for the lag-time to speciation.
GEIGER v. 0.2-3 R functions to estimate rates of character evolution along phylogenetic trees (developed by Luke Harmon).
2008
Weir, J. T. and Schluter, D. (2008) Is there an avian molecular clock? Molecular Ecology. In press.
Miller, M.J., Bermingham, E., Klicka, J,, Escalante, P. Raposo do Amaral, F.S., Weir, J.T., Winker, K. (2008) Out of Amazonia again and again: Episodic crossing of the Andes promotes diversification in a lowland forest flycatcher. Proceedings of the Royal Society of London, B. In press.
Weir, J. T., Bermingham, E., Miller, M. J., Klicka, J., Gonzalez, M. A. (2008). Phylogeography of a morphologically diverse Neotropical montane species, the
common bush-tanager (Chlorospingus ophthalmicus). Molecular Phylogenetics and Evolution. in press.
Harmon, L., Weir, J. T. Brock, C., Glor, R. E., and Challenger, W. (2008) GEIGER: Investigating evolutionary radiations. Bioinformatics 24: 129-131.
2007
Schluter, D and J. T. Weir. 2007. Response: explaining latitudinal diversity gradients. Science 317: 451-452.
Weir, J. T. and D. Schluter. 2007. The latitudinal gradient in recent speciation and extinction rates in birds and mammals. Science 315: 1928-1933. | Supporting Online Materials | (cited by Faculty of 1000)
ScienceNOW
| Nature News
| The Why Files | CBC news article | Associated Press news article
2006
Weir, J. T. 2006. Divergent timing and patterns of species accumulation in lowland and highland neotropical birds. Evolution 60: 842–855.
Online Figures
2004
Weir, J. T. and D. Schluter. 2004. Ice sheets promote speciation in boreal birds. Proceedings of the Royal Society of London Series B, Biological Sciences 271: 1881-1887.
Natural History Samplings | TREE Update
1999
Weir, J. 1999a. The breeding biology of an American avocet colony in British Columbia. British Columbia Birds 7: 3-7.
Weir, J. 1999b. A west coast record of a juvenile boreal owl. British Columbia Birds 7: 11-12.
Dolph Schluter (graduate supervisor)
Trevor Price (postdoc supervisor beginning September 2007)