Chercheurs

Sciences de la Vie / BROWN, JONATHAN M.

brownj

Position

Associate Professor of Biology
Grinnell College
Department of Biology
Grinnell, IA, US.

Thèmes de recherche

Evolution of Ecological Interactions; Molecular systematics.

The study of biodiversity has historically been conducted within two disciplines, with community ecologists addressing the mechanisms that maintain diversity and evolutionary biologists addressing speciation and adaptation. The goal of his research has been to explore the intersection of these ecological and evolutionary frameworks. He expresses this goal in two fundamental questions :

* How have ecological interactions influenced mechanisms and rates of diversification?

* How have historical patterns of diversification influenced current species interactions?

A better understanding of diversity thus requires the application of both evolutionary and ecological methods. My research has focused on host- or habitat-association as a central factor in mediating the interaction between ecological and evolutionary processes in natural communities of arthropods, including North American moths, flies, and damselflies and endemic Hawaiian flies.

Prix et récompenses

Publications

2007. Mittelbach, G.G., D. Schemske, H.V. Cornell, A.P. Allen,. J. M. Brown, M.Bush, S.P. Harrison, A. Hurlbert, N. Knowlton, H. A. Lessios, C.M. McCain, A.R. McCune, L.A. McDade, M.A. McPeek, T.J. Near, T.D. Price, R.E. Ricklefs, K. Roy, D.F. Sax, D. Schluter, J.M. Sobel, M. Turelli. Evolution and the latitudinal diversity gradient: Speciation, extinction, and biogeography. Ecology Letters.

2007. McPeek, M.A. and J.M. Brown. Clade age and not diversification rate explains species richness among animal taxa. American Naturalist.

2006. Heard, S.B, J.O. Stireman, J.D. Nason, G.H. Cox, C. Kolacz, and J.M. Brown. On the elusiveness of enemy-free space: Spatial, temporal, and host-plant-related variation in parasitoid attack rates on three gallmakers of goldenrods. Oecologia 150:421-434.

2006. Brown, J.M., M. Todd-Thompson*, A. McCord*, A. O’Brien*, and B. O’Fallon* Phylogeny, host association, and wing pattern variation in the endemic Hawaiian tephritids (Tephritidae: Tephritini). Instrumenta Biodiversitatis VII:1-16.

2006. Brown, J.M., and I. Cooper*. Evolution of wing pigmentation patterns in a tephritid gallmaker: divergence and hybridization. Pp. 253-261 in Galling Arthropods and Their Associates – Ecology and Evolution, K. Ozaki, J. Yukawa, T. Ohgushi, and P.W. Price, eds. Springer-Verlag, Tokyo.

2005. Turgeon, J. R. Stoks, R.A. Thum, J.M. Brown, and M.A. McPeek. Simultaneous quaternary radiations of three damselfly clades across the Holarctic. American Naturalist. 165:E78-107.

2005. McGranahan, D.A.*, S. Kuiper, and J.M. Brown. Temporal patterns in use of an Iowa woodlot during the autumn bird migration. American Midland Naturalist 153:61-70.

2003. Cooper*, I., E. Roeder*, and J.M. Brown. Arthropod response to burning and mowing in a reconstructed prairie. Ecological Restoration 21:204-5.

2000. Brown, J.M, M.A. McPeek, and M. May. A phylogenetic perspective on habitat shifts and diversity in the North American Enallagma damselflies. Systematic Biology 49:697-712.

2000. McPeek, M.A. and J.M. Brown. Building a regional species pool: Diversification of the Enallagma damselflies in eastern North American waters. Ecology 81: 904–920.

1998. Drown*, D.M., and J.M. Brown. Molecular phylogeny of North American oak-galling Cynipini (Hymenoptera: Cynipidae) supports need for generic revision. Pp. 241-246. The Biology of Gall-Inducing Arthropods (Csoka, G., W.J. Mattson, G.N. Stone and P.W. Price eds.). Gen. Tech. Rep. NC-199. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station.

1998. Faust*, L., and J.M. Brown. Sexual selection via female choice in the gall-making fly Eurosta solidaginis Fitch (Diptera: Tephritidae). The Biology of Gall-Inducing Arthropods (Csoka, G., W.J. Mattson, G.N. Stone and P.W. Price eds.). Gen. Tech. Rep. NC-199. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station.

1997. Brown, J.M., J. Leebens-Mack, O. Pellmyr, J.N. Thompson, and R.G. Harrison. Phylogeography and host association in a pollinating seed parasite, Greya politella (Lepidoptera: Prodoxidae). Molecular Ecology 6:215-224.

1996. Pellmyr, O., J.N. Thompson, J. M. Brown and R.G. Harrison . Evolution of pollination and mutualism in the yucca moth lineage. American Naturalist 148:827-847.

1996. Hess, M.D. W.G. Abrahamson and J.M. Brown. Intraspecific larval competition in the herbivorous ball-gallmaker, Eurosta solidaginis (Diptera: Tephritidae). American Midland Naturalist 136:121-133.

1996. McPeek, M.A., A. K. Schrot, and J. M. Brown. Adaptation to predators in a new community: swimming performance and predator avoidance in damselflies. Ecology 77:617-629.

1996. Brown, J.M, W.G. Abrahamson and P.A. Way*. mtDNA phylogeography of host races of the goldenrod ball gallmaker (Diptera: Tephritidae: Eurosta solidaginis). Evolution 50:777-786.

1995. Brown, J.M., W.G. Abrahamson, R. Packer*, and P.A. Way*. The role of enemy escape in a gallmaker host-plant shift. Oecologia 104:52-60.

1994. Brown, J.M., O. Pellmyr, J.N. Thompson, and R.G. Harrison. mtDNA phylogeny of the Prodoxidae (Lepidoptera: Incurvarioidea) indicates a rapid ecological diversification of the yucca moths. Annals of the Entomological Society of America 87:795-802.

1994. Brown, J.M., O. Pellmyr, J.N. Thompson, and R.G. Harrison. Phylogeny of Greya (Lepidoptera:Prodoxidae) based on nucleotide sequence variation in cytochrome oxidase I and II: congruence with morphological data. Molecular Biology and Evolution 11:128-141.

1994. Abrahamson, W.G. J.M. Brown, S.K. Roth, D.V. Sumerford, J.D. Horner, M.D. Hess, S.T. How, T.P. Craig, R.A. Packer*, and J.K. Itami. Gallmaker speciation: an assessment of the roles of host-plant characters and phenology, gallmaker competition, and natural enemies. In P. Price, W. Mattson, and Y. Baranchikov, eds. Gall-forming Insects. USDA Forest Service, North Central Experiment Station. General Technical Report. pp. 208-222.

1994. Brown, J.M. and D.S. Wilson. Poecilochirus carabi: Behavioral and life-history adaptations to different hosts and the consequences of geographical shifts in host communities. pp. 1-22 in M. Houck, ed., Mites -- Ecological and Evolutionary Analyses of Life History Patterns. Chapman and Hall, New York.

1992. Brown, J.M. and D.S. Wilson. Local specialization on sympatric hosts: phoretic mites on carrion beetles. Ecology 73:463-478.