Department Fish Ecology and Evolution

Eco-Evolutionary Dynamics

My group studies evolution as a contemporary ecological and ecosystem process. We are interested in the ecological dynamics of natural selection, and the reciprocal interactions among ecological, ecosystem, and evolutionary dynamics.


Feedbacks between phenotypic evolution and ecosystem dynamics - Feedbacks are central to understanding evolving biological systems. In aquatic systems, we study how contemporary trait evolution of predators (e.g. threespine stickleback) can affect community structure (of prey and non-prey) and the functioning of ecosystems (e.g. habitat structure, nutrient cycling, productivity). Such organisms-mediated ecosystem effects can feedback to affect selection gradients and evolutionary responses.

Evolution and the resilience of ecosystems  - Interactions between ecological and evolutionary processes are fundamental for understanding the balance of feedbacks that govern ecosystem stability and resilience to environmental change. Using pond and mesocosm experiments, we study how species interactions and biodiversity affect the resilience of aquatic system to perturbations (e.g. nutrient pollution).

Evolution of the organism-environment interaction
- All living organisms evolve in a reciprocal interaction with their environment. The evolution of phenotypic plasticity is an important component of this interaction. In aquatic organisms, we study both the causes and consequences of plasticity. In isopods, cryptic pigmentation is a developmentally plastic trait, whose evolution is likely mediated by predation, resources, and habitat structure. In stickleback, trait plasticity can have effects on ecosystems that are independent of the genetic background of the population.

The community context of evolution (Greenland)
- Contemporary evolution in natural populations is shaped by the interplay of abiotic environments and species interactions. It is the structure and composition of communities that defines ecological dynamics of natural selection. We have recently begun to study the community context of evolution and adaptation in freshwater ecosystems (lakes and streams) on the Southern Peninsula of Greenland. The lakes of Greenland are inhabited by only two fish species (threespine stickleback and char), and so there are a limited number of food web configurations (e.g. only one species, both species, or neither species). We are interested in how this community context (i.e. presence or absence of Char) affects the evolution of interactions between stickleback and their prey.


Team

Dr. Maria CuencaTel. +41 58 765 2203Send Mail
Dr. Blake MatthewsTel. +41 58 765 2120Send Mail
Dr. Cameron HudsonTel. +41 58 765 2166Send Mail
Leighton Rebecca KingTel. +41 58 765 2188Send Mail
Marvin MoosmannTel. +41 58 765 2126Send Mail
Rebecca OesterTel. +41 58 765 5312Send Mail
Dominique StalderTel. +41 58 765 2265Send Mail
Daniel SteinerTel. +41 58 765 2118Send Mail

Current projects

In this project we are interested in which traits govern the efficiency of stickleback foraging in different ecological contexts.
20,000 years of evolution and ecosystem dynamics in the world’s largest tropical lake reconstructed from sediment cores, fossils, and ancient DNA.
Interactive effects of diet and nutrition on phenotypic plasticity and adaptation
Myvatn threespine stickleback as a model
Underlying mechanisms and ecosystem feedbacks
New tools to monitor changes in ecosystem conditions and to quantify genetic changes of populations in (semi-)natural environments to predict how human mediated environmental change will influence stability and resilience of ecosystems.