Van Allen, Benjamin G.Rudolf, Volker H.W.2013-04-302014-05-012013-05Van Allen, Benjamin G. and Rudolf, Volker H.W.. "Ghosts of Habitats Past: Environmental Carry-Over Effects Drive Population Dynamics in Novel Habitat." <i>The American Naturalist,</i> 181, no. 5 (2013) The University of Chicago Press: 596-608. http://dx.doi.org/10.1086/670127.https://hdl.handle.net/1911/71080The phenotype of adults can be strongly influenced by the environmental conditions experienced during development. Consequently, variation in habitat quality across space and through time also leads to differences in the phenotypes of adults. This could create carry-over effects where differences in the natal habitat quality of colonizers influence population dynamics in new habitats. We tested this hypothesis experimentally by simulating dispersal of Tribolium castaneum from low- or high-quality natal habitat into new patches of low- or high-quality habitat. Differences in the natal habitat quality of colonizers altered population growth trajectories and led to carrying capacities that differed by up to 63% within a habitat type, indicating that patch dynamics are determined by the interaction of past and current habitat quality. Interestingly, even after multiple generations, the natal habitat of colonizers determined differences in adult traits that were related to density-dependent population regulation. These changes in adult phenotype could at least partially explain why carry-over effects continued to alter population dynamics for multiple generations until the end of the experiment. These results highlight the importance of variable habitat quality and carryover effects for population dynamics.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehabitat qualitymetapopulationcarry-over effectspopulation dynamicscannibalismphenotypic plasticityhttp://dx.doi.org/10.1086/670127