My research deals with how environmental changes may affect the juvenile stages of a commercial important fish species. The main focus is on how cod (Gadus morhua) may react on habitat shifts, induced by anthropogenic or natural causes. Within my work I have surveyed the movement of fish between different water regimes on a yearly basis, to evaluate which habitat and prey resources they utilises. The techniques I’m working with ranges from standard field survey using different fishing methods and stomach analysis, to stable isotopes when evaluating habitat depending trophic role of the fish. Further I’m conducting experimental work on predator-prey interactions, where juvenile cod serve either as predator or prey through a range of habitats.
I’m also interested in how habitat degeneration in the coastal zone, and the role of edges will affect the relationship between mainly fish and its prey resources.
Chapman BB, Hegg A, Ljungberg P. 2013. Sex and the syndrome: Individual and population consistency in behavioural syndromes in rock pool prawns. PLoS One (in press)
Ljungberg P, Berg Hasper T, Persson A, Nilsson PA. 2013. Effects of small-scale habitat fragmentation on predator–prey interactions in a temperate sea grass system. Marine Biology. 160:667–675
Ljungberg P, Nilsson P A, Persson A. 2012. Prey consumption and selectivity by juvenile Atlantic cod (Gadus morhua) in three coastal habitat types. Marine Ecology Progress Series. 466: 215-223.
Persson A, Ljungberg P, Andersson M, Götzmann E, Nilsson P A. 2012. Foraging performance of juvenile Atlantic cod (Gadus morhua) and profitability of coastal habitats. Accepted in Marine Ecology Progress Series. 456: 245–253
Jönsson M, Ranåker L, Nicolle A, Ljungberg P, Fagerberg T, Hylander S, Jephson T, Lebret K, von Einem J, Hansson L-A, Nilsson P.A, Balseiro E, Modenutti B. 2011. Glacial clay affects foraging performance in a Patagonian fish and cladoceran. Hydrobiologia. 663: 101-108.
Hylander S, Jephson T, Lebret K, von Einem J, Fagerberg T, Balseiro E, Modenutti B, Souza MS, Laspoumaderes C, Jönsson M, Ljungberg P, Nicolle A, Nilsson P.A., Ranåker L, Hansson L-A. 2011. Climate-induced input of turbid glacial meltwater affects vertical distribution and community composition of phyto- and zooplankton. Journal of Plankton Research. 33: 1239-1248.
Main advisor: Anders Persson