I am interested in how organisms adapt to variable environments. I use American and European species of damselflies to study how the expression of ecologically important traits (behaviour, physiology, growth and survival) depends not only on environmental factors such as light and temperature, but also on ecological factors such as competition and predation. I combine lab-based experiments, information from the natural history literature, and computer simulations to investigate how the phenotypic plasticity of these traits translates into fitness differences in the animals’ natural ecosystem.
Publications <Google Citations>
Nilsson-Örtman, V., R. Stoks, M. De Block, H. Johansson and F. Johansson. 2013. Latitudinally structured variation in the temperature dependence of damselfly growth rates. Ecology Letters 16:1 64-71
Nilsson-Örtman, V., R. Stoks and F. Johansson. In press. Latitudinal patterns of phenology and age-specific thermal performance across six Coenagrion damselfly species (Odonata). Ecological Monographs.
Nilsson-Örtman, V., R. Stoks, and F. Johansson. In press. Competitive interactions modify the temperature dependence of damselfly growth rates. Ecology.
Johansson, F. and V. Nilsson-Örtman. 2013. Predation and the relative importance of larval colour polymorphisms and colour polyphenism in a damselfly.Evolutionary Ecology 27:3 579-591.
Khuong D. V., L. Janssens, S. Debecker, M. De Jong, P. Lambret, V. Nilsson-Örtman, L. Bervoets and R. Stoks. 2013. Susceptibility to a metal under global warming is shaped by thermal adaptation along a latitudinal gradient. Global Change Biology 19: 2625-2633.
Johansson, H., R. Stoks; V. Nilsson-Örtman, P. Ingvarsson and F. Johansson. 2013. Large-scale patterns in genetic variation, gene flow and differentiation in five species of European Coenagrionid damselfly provide mixed support for the central-marginal hypothesis. Ecography 36: 744-755.
Nilsson-Örtman, V., R. Stoks, M. De Block and F. Johansson. 2012. Generalists and specialists along a latitudinal transect: patterns of thermal adaptation in six species of damselflies. Ecology 93: 1340-1352.
Śniegula, S., V. Nilsson-Örtman and F. Johansson. 2012. Growth Pattern Responses to Photoperiod across Latitudes in a Northern Damselfly. PLoS ONE7(9): e46024.
Śniegula, S., F. Johansson and V. Nilsson-Örtman. 2012. Differentiation in developmental rate across geographic regions: a photoperiod driven latitude compensating mechanism? Oikos 121: 1073-1082.
Nilsson-Örtman, V., Nilsson, A. 2010. Using taxonomic revision data to estimate the global species richness and characteristics of undescribed species of diving beetles (Coleoptera: Dytiscidae). Biodiversity Informatics 7: 1-16.