· Heard, S.B., L.K. Jesson, and K. Tulk. 2009.  Population genetic structure of the Gulf of St. Lawrence Aster, Symphyotrichum laurentianum (Asteraceae), a threatened coastal endemic.  Botany 87:1089-1095 (pdf).

· Kolaczan, C.R., S.B. Heard, K.A. Segraves, D.M. Althoff, and J.D. Nason. 2009. Spatial and genetic structure of host-associated differentiation in the parasitoid Copidosoma gelechiae. J. Evol. Biol. 22”1275-1283 (pdf).

· Heard, S.B. and G.H. Cox. 2009. Plant module size and attack by the goldenrod spindle-gall moth. Can. Entomol.  141:406-414 (pdf).

· Vamosi, S.M., S.B. Heard, J.C. Vamosi, and C.O. Webb. 2009. Emerging patterns in the comparative analysis of phylogenetic community structure. Mol. Ecol. 18:572-592 (pdf).

· Cox, G.H., S.B. Heard and J.M. Seehawer. 2008. A transplant technique for gallmaking insects: impacts on gallmaker and parasitoid larvae. Can. Entomol. 140:611-616 (pdf).

· Heard, S.B. and L.C. Remer. 2008. Travel costs, oviposition behaviour,and the dynamics of insect-plant systems. Theor. Ecol. 1:179-188 (pdf).

· Halverson, K., S.B. Heard, J.D. Nason, and J.O. Stireman III. 2008. Origins, distribution and local co-occurrence of polyploid cytotypes in Solidago altissima (Asteraceae). Amer. J. Bot. 95:50-58 (pdf).

· Halverson, K., S.B. Heard, J.D. Nason, and J.O. Stireman III. 2008. Differential attack on diploid, tetraploid, and hexaploid Solidago altissima L. by five insect gallmakers. Oecologia 154:755-761 (pdf).

· Heard, S.B. and G.H. Cox. 2007. The shapes of phylogenetic trees of clades, faunas, and local assemblages: exploring spatial pattern in differential diversification. Amer. Nat. 169:E107-E118 (pdf).

· Mooers, A.O., L.J. Harmon, M.G.B. Blum, D.H.J. Wong, and S.B. Heard. 2007. Some models of phylogenetic tree shape. Pages 147-168 in Reconstructing Evolution: New Mathematical and Computational Advances (O. Gascuel and M. Steel, eds.), Clarendon Press (pdf).

· Kedzierska, K., E.B. Day, J. Pi, S.B. Heard, P.C. Dohorty, S.J. Turner, and S. Perlman. 2006. Quantification of repertoire diversity of influenza-specific epitopes with predominant public or private TCR usage. J. Immunol. 177:6705-6712 (pdf).

· Heard, S.B., J.O. Stireman III, J.D. Nason, G.H. Cox, C.R. Kolacz, and J.M. Brown. 2006. 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 (pdf).

· Stireman, J.O. III, J.D. Nason, S.B. Heard, and J.M. Seehawer. 2006. Cascading host-associated genetic differentiation in parasitoids of phytophagous insects. Proc. Roy. Soc. Lond. B 273:523-530 (pdf).

· Stireman, J.O. III, J.D. Nason, and S.B. Heard. 2005. Host-associated genetic differentiation in phytophagous insects: general phenomenon or isolated exceptions? Evidence from a goldenrod insect community. Evolution 59:2573-2587 (pdf).

· Soutullo, A., S. Dodsworth, S.B. Heard, and A.O. Mooers. 2005. Distribution and correlates of Carnivore phylogenetic diversity across the Americas. Anim. Conserv. 8:249-258 (pdf).

· Mooers, A.O., S.B. Heard, and E. Chrostowski. 2005. Evolutionary heritage as a metric for conservation. Pages 120-138 in Phylogeny and Conservation (Purvis, A., J.L. Gittleman, and T. Brooks, eds.), Oxford University Press (pdf).

· Heard, S.B. and C.K. Buchanan. 2004. Grazer-collector facilitation hypothesis supported by laboratory but not field experiments. Can. J. Fish. Aquat. Sci. 61:887-897 (pdf).

· Pewe, L., J. Netland, S.B. Heard, and S. Perlman. 2004. Very diverse CD4 and CD8 T cell clonotypic responses after virus infections. J. Immunol. 172: 3151 - 3156 (pdf).

· Niehaus, A.C., S.B. Heard, S.D. Hendrix and S.L. Hillis. 2003. Measuring edge effects on nest predation in forest fragments: do finch and quail eggs tell different stories? Amer. Midl. Nat. 149:335-343 (pdf).

· Savolainen, V., S.B. Heard, M. Powell, J. Davies and A.Ø. Mooers. 2002. Is cladogenesis heritable? Syst. Biol. 51: 835-843 (pdf).

· Heard, S.B. and A.Ø. Mooers. 2002. Signatures of random and selective mass extinctions in phylogenetic tree balance. Syst. Biol. 51: 889-897 (pdf).

· J.D. Nason, S.B. Heard, and F.R. Williams. 2002. Host-associated genetic differentiation in the goldenrod elliptical-gall moth, Gnorimoschema gallaesolidaginis (Lepidoptera: Gelechiidae). Evolution 56:1475-1488 (pdf).

· Semple, J.C., S.B. Heard and L. Brouillet. 2002. Cultivated and native asters of Ontario (Compositae: Astereae): Aster L. [including Diplactis Raf. and Kalimeris (Cass.) Cass.], Callistephus Cass., Doellingeria Nees, Eurybia (Cass.) S.F. Gray, Galatella Cass., Oclemena Greene and Symphyotrichum Nees [including Canadanthus Nesom and Virgulus Raf.]. University of Waterloo Biology Series 41: 1-130 (purchase).

· Heard, S.B., C.B. Gienapp, J.F. Lemire, and K.S. Heard. 2001. Transverse mixing of transported material in simple and complex stream reaches. Hydrobiologia 464:207-218 (pdf).

· Rogers, C.M. and S.B. Heard. 2000. The mesopredator release hypothesis: integrating landbird management and ecological theory. Studies Avian Biol. 21:138-143 (pdf).

· Heard, S.B. and A.O. Mooers. 2000. Phylogenetically patterned speciation rates and extinction risks change the loss of evolutionary history during extinctions. Proc. Roy. Soc. Lond. B. 267:613-620 (pdf).


And strictly for fun:


· Scott, E.C., et al. 2004. The morphology of Steve. Ann. Improbable Res. 10:24-29 (pdf).



The Heard Lab

Understanding ecological controls on the evolution of biodiversity

Plant images © Geoff Galicio, Pethan, Randy Nonenmacher, Elke Love