Adaptive radiations in α and β niche dimensions
I theoretically investigate the ecological drivers of adaptive radiations - a rapid burst of speciations within a single lineage, filling up available niche space. A focal question is what type of traits diverge first - traits associated with adaptation to different habitat types (β-traits) or traits assocaited with local competition, which make local coexistence possible (α-traits). Examples of α-traits are diet preference traits or microhabitat adaptations. β-traits are typically adaptations to the physical environement, such as heat, cold or drought adaptiations. Is it possible to predict what traits are evolutionary conserved, or vice versa, if we find that one type of trait evolves more readily, what conclusions can we draw from such a pattern? These are fundamental questions for the intrepretation of current biogeographic and phylogenetic data, and our understanding of the emergence of species on earth.
Species evolution in variable environments
All organisms have to cope with a variable physical environment. However, such variation also generates fluctuating population densities, which in itself imposes a variable selection pressure. Moreover, the fluctations in population size will depend on what type or life history strategy is currently dominating the population. I am interested in this feedback loop between the short-term ecological time-scale and the long-term evolutionary time-scale. How do species and in particular species interactions evolve when all interacting species vary in abundance over time as well as space?
Population and community dynamics in variable, stochastic, environments
I also have a long term interest in the interplay between endogenous population dynamics, driven by ecological interactions, and structured (temporally or spatially) environmental fluctuations.
(fetched from Lund University's publications database)
- On the origin of phylogenetic structure in competitive metacommunities
- Primary assembly of soil communities: disentangling the effect of dispersal and local environment.
- Soil disturbance as a restoration measure in dry sandy grasslands
- Stochasticity, Environmental
- The role of harvesting in age-structured populations: Disentangling dynamic and age truncation effects
- The strength of species interactions modifies population responses to environrnental variation in competitive communities
- Adaptive branching in source-sink habitats
- Fluctuations in harvest of native and introduced crayfish are driven by temperature and population density in previous years
- The origin of polymorphic crypsis in a heterogeneous environment
- The risk of competitive exclusion during evolutionary branching: Effects of resource variability, correlation and autocorrelation.
- What is bet-hedging, really?
- Bet-hedging as an evolutionary game: the trade-off between egg size and number.
- Environmental variation in ecological communities and inferences from single-species data
- Niche co-evolution in consumer-resource communities
- Niche coevolution in consumer–resource communities
- Speciation: from diversification to reproductive isolation
- When is sympatric speciation truly adaptive? An analysis of the joint evolution of resource utilization and assortative mating
- Biological filtering of correlated environments: towards a generalised Moran theorem
- Interaction assessments in correlated and autocorrelated environments
- On the evolution of conditional dispersal under environmental and demographic stochasticity
- Time series modelling and trophic interactions: rainfall, vegetation and un gulate dynamics
Doctoral students and postdocs
PhD student, assistant supervisor