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S.A. Chamberlain and J.N. Holland 2008. Density-mediated, context-dependent consumer–resource interactions between ants and extrafloral nectar plants. Ecology, 89: 1364–1374. doi:10.1890/07-1139.1.
S.A. Chamberlain and J.N. Holland 2009. Quantitative synthesis of context dependency in ant-plant protection mutualisms. Ecology, 90: 2384–2392.
J. De Woody , T.H. Rickman , B.E. Jones , and V.D. Hipkins 2009. Allozyme and microsatellite data reveal small clone size and high genetic diversity in aspen in the southern Cascade Mountains. Forest Ecology and Management, 258: 687–696.
P. Doak , D. Wagner , and A. Watson 2007. Variable extrafloral nectary expression and its consequences in quaking aspen. Canadian Journal of Botany, 85: 1–9. doi:10.1139/B06-137.
A. Dussutour and S.J. Simpson 2008. Carbohydrate regulation in relation to colony growth in ants. Journal of Experimental Biology, 211: 2224–2232. doi:10.1242/jeb.017509.
A. Dussutour and S.J. Simpson 2009. Communal nutrition in ants. Current Biology, 19: 740–744. doi:10.1016/j.cub.2009.03.015.
A.S.D. Eller , J. de Gouw , M. Graus , and R.K. Monson 2012. Variation among different genotypes of hybrid poplar with regard to leaf volatile organic compound emissions. Ecological Applications, 22: 1865–1875.
M. Gonzalez-Teuber and M. Heil 2009. Nectar chemistry is tailored for both attraction of mutualists and protection from exploiters. Plant Signaling & Behavior, 4: 809–813.
M. Heil 2004. Induction of two indirect defences benefits lima bean (Phaseolus lunatus, Fabaceae) in nature. Journal of Ecology, 92: 527–536.
M. Heil 2008. Indirect defence via tritrophic interactions. New Phytologist, 178: 41–61.
M. Heil 2011. Nectar: generation, regulation and ecological functions. Trends in Plant Science, 16: 191–200.
D.E. Jelinski and W.M. Cheliak 1992. Genetic diversity and spatial subdivision of Populus tremuloides Salicaceae) in a heterogeneous landscape. American Journal of Botany, 79: 728–736.
J.F. Johnstone , T.N. Hollingsworth , F.S. Chapin , and M.C. Mack 2010. Changes in fire regime break the legacy lock on successional trajectories in Alaskan boreal forest. Global Change Biology, 16: 1281–1295. doi:10.1111/j.1365-2486.2009.02051.x.
N. Katayama and N. Suzuki 2003. Changes in the use of extrafloral nectaries of Vicia faba (Leguminosae) and honeydew of aphids by ants with increasing aphid density. Annals of the Entomological Society of America, 96: 579–584.
C. Kost and M. Heil 2005. Increased availability of extrafloral nectar reduces herbivory in lima bean plants (Phaseolus lunatus, Fabaceae). Basic and Applied Ecology, 6: 237–248.
S.M. Landhäusser , D. Deshaies , and V.J. Lieffers 2010. Disturbance facilitates rapid range expansion of aspen into higher elevations of the Rocky Mountains under a warming climate. Journal of Biogeography, 37: 68–76. doi:10.1111/j.1365-2699.2009.02182.x.
J.N. Long and K. Mock 2012. Changing perspectives on regeneration ecology and genetic diversity in western quaking aspen: implications for silviculture. Canadian Journal of Forest Research, 42: 2011–2021. doi:10.1139/x2012-143.
B. Mortensen , D. Wagner , and P. Doak 2011. Defensive effects of extrafloral nectaries in quaking aspen differ with scale. Oecologia, 165: 983–993. doi:10.1007/s00442-010-1799-6.
B. Mortensen , D. Wagner , and P. Doak 2013. Parental resource and offspring liability: the influence of extrafloral nectar on oviposition by a leaf-mining moth. Oecologia, 172: 767–777. doi:10.1007/s00442-012-2525-3.
J. Newman and D. Wagner 2013. The influence of defoliation and water availability on extrafloral nectar secretion in quaking aspen (Populus tremuloides Michx). Botany, 91: 761–767.
F.B. Rosumek , F.A.O. Silveira , F.d.S. Neves , N.P.d.U. Barbosa , L. Diniz , Y. Oki , et al. 2009. Ants on plants: a meta-analysis of the roles of ants as plant biotic defenses. Oecologia, 160: 537–549.
J.A. Rudgers 2004. Enemies of herbivores can shape plant traits: selection in a facultative ant-plant mutualism. Ecology, 85: 192–205.
J.A. Rudgers and S.Y. Strauss 2004. A selection mosaic in the facultative mutualism betweeen ants and wild cotton. Proceedings of the Royal Society of London B, 271: 2481–2488.
D. Wagner and P. Doak 2013. Long term impact of a leaf miner outbreak on the performance of quaking aspen. Canadian Journal of Forest Research, 43: 563–568. doi:10.1139/cjfr-2012-0486.
S.C. Wooley , J.R. Donaldson , A.C. Gusse , R.L. Lindroth , and M.T. Stevens 2007. Extrafloral nectaries in aspen (Populus tremuloides): heritable genetic variation and herbivore-induced expression. Annals of Botany, 100: 1337–1346.
A. Yamawo , Y. Hada , and N. Suzuki 2012. Variations in direct and indirect defenses against herbivores on young plants of Mallotus japonicus in relation to soil moisture conditions. Journal of Plant Research, 125: 71–76. doi:10.1007/s10265-011-0407-0.