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I’m an ecologist with a background in computer engineering that have found my perfect scientific niche within the field of theoretical ecology. I have a broad interest in the ecological and evolutionary processes that governs the ‘tangled bank’ and underpins the ‘balance of nature’ of natural ecosystems. In my research I focus on the effects of environmental variation and within- and between species interactions on the dynamics, stability and functioning of ecological networks.

Currently, I’m a NERC-funded postdoc at Swansea University working together with Mike Fowler (Swansea) and Steve Sait (Leeds University). We study a host-parasitoid system and combine theoretical and experimental approaches to investigate the effects of environmental variation on the ecology and evolution of insect-natural enemy interactions.

Areas of Expertise

  • The dynamics and stability of ecological networks
  • Environmental stochasticity
  • Host-parasitoid systems
  • Computer programming


  1. Gilljam, D., Knape, J., Lindén, A., Mugabo, M., Sait, S., Fowler, M. The colour of environmental fluctuations associated with terrestrial animal population dynamics Global Ecology and Biogeography 28 2
  2. Gilljam, D., Curtsdotter, A., Ebenman, B. Adaptive rewiring aggravates the effects of species loss in ecosystems Nature Communications 6 8412
  3. Gilljam, D., Thierry, A., Edwards, F., Figueroa, D., Ibbotson, A., Jones, J., Lauridsen, R., Petchey, O., Woodward, G., Ebenman, B. Seeing Double: Size-Based and Taxonomic Views of Food Web Structure (Ed.), Volume 45 of Advances in ecological research - The Role of Body Size in Multispecies Systems 67 133 Academic Press
  4. Gilljam, D. Structure and Stability of Ecological Networks : The role of dynamic dimensionality and species variability in resource use