Department Aquatic Ecology

Algal Biodiversity and Ecosystem Functioning

Welcome to the Algal Biodiversity and Ecosystem Functioning Group. We are a part of the Aquatic Ecology Department at Eawag. Our work aims to understand how differences among species allows them to coexist and, in turn, how their coexistence controls the ecological functioning of communities and the services they provide to humanity. Research in our group focuses largely on freshwater phytoplankton for a number of reasons: planktonic organisms are great model organisms for testing and advancing both evolutionary and ecological theory, they are important drivers of global primary production, they are the base of freshwater food webs, and they may be an important source of energy for humans in the future. Our approach is largely experimental and it aims to test theory using microcosm, mesocosm and field experiments. We also use meta-analysis and model-fitting approaches to draw inferences from large data-sets and field survey data.

Research Focus

Causes of biodiversity: the environment, evolutionary history, and trait

Causes of biodiversity: the environment, evolutionary history, and traits:

  1. Is biodiversity really declining locally in natural ecosystems?
  2. How do species respond to and avoid competition, in order to coexist?
  3. Does local adaptation to competition lead to trait divergence, enabling coexistence?
  4. How does the environment control the traits responsible for competitive coexistence?

Consequences of biodiversity at the ecosystem level:

  1. What are the impacts of intra- and interspecific diversity on algal primary production and other ecosystem functions?
  2. Are diverse systems more stable?
  3. What traits drive stability?
Causes of biodiversity: the environment, evolutionary history, and trait

Group Leader

Dr. Anita Julianne Tricia Narwani Deputy Head of Department Tel. +41 58 765 5667 Send Mail

Gallery

Photos are by Rogelio Moreno G.

Current Projects

Team

Dr. Anita Julianne Tricia Narwani Deputy Head of Department Tel. +41 58 765 5667 Send Mail
Finn Arn Tel. +41 58 765 5312 Send Mail
Sophie Naef Tel. +41 58 765 5312 Send Mail
Taylor Norris Tel. +41 58 765 6440 Send Mail
Divina Ryf Tel. +41 58 765 5191 Send Mail
Li Zhao Tel. +41 58 765 5312 Send Mail
Marta Reyes Research Technician Tel. +41 58 765 6725 Send Mail