معرفی
Johan Ehrlén is a Professor at Stockholm University working in the Department of Ecology, Environment and Botany. His research focuses on understanding the environmental factors that drive natural selection and plant population dynamics, with particular emphasis on phenology, climate adaptation, and species interactions.
Professor Ehrlén leads the "Group Ehrlen" research group, investigating complex relationships between plants, environment, and other organisms. His primary research interests include:
- Plant ecology and population dynamics
- Phenological responses to climate change
- Natural selection processes in plant populations
- Local adaptation along environmental gradients
- Plant-microbe-insect interactions
- Invasive species ecology, particularly Lupinus polyphyllus
- Microclimate effects on plant adaptation
His research employs field experiments, long-term monitoring, and modeling approaches, with significant work conducted along natural geothermal gradients as climate change analogues. He has extensively studied flowering phenology, examining both genetic and plastic components of flowering time variation and their fitness consequences. His work often integrates experimental and observational data to understand immediate responses and evolutionary adaptation potential.
Analysis of Professor Ehrlén's recent publications reveals a strong focus on climate change impacts across multiple scales - from individual plant responses to community dynamics. Key themes include biotic-abiotic interactions shaping plant fitness, microclimate buffering against climate change, and evolutionary consequences of changing environments. His research on geothermal gradients has provided valuable insights into trade-offs in plant adaptation, such as increased heat tolerance coming at the cost of reduced performance under cooler conditions.
Professor Ehrlén leads several significant projects including long-term studies of bastard moths in southern Östergötland (ongoing since 2012), development of cost-effective methods to control invasive Lupinus polyphyllus, and investigations into natural selection on flowering time. His work combines field work in boreal forests and geothermal areas in Iceland with advanced monitoring techniques including temperature data loggers to understand plant responses to environmental change.
