Research

Field workThe causes and consequences of biodiversity in freshwater rock pools:
We work with rock pool communities, in which we estimate and manipulate the diversity of crustaceans (daphnids, copepods, ostracods). Small crustaceans are the dominant free-swimming animal players in this system (apart from the big bad predatory beetles of course). We are interested in exploring how changes in the rock pool environment affect which species are present and able to coexist, and how this affects the relationship between diversity and ecosystem processes. Both taxonomic and functional aspects of diversity are studied. For our purposes, we use a mix of observational studies and outdoor mesocosm experiments.
People involved: Lars Gamfeldt (PI) and Fabian Roger

Biodiversity and ecosystem functioning in natural bacterial communities:
The aim of this project is to study whether the positive relationships found between biodiversity and ecosystem functioning found in classical study systems are also present in mega-diverse systems such as natural bacterial communities. To manipulate diversity we use a dilution approach.
People involved: Fabian Roger (PI) and Lars Gamfeldt
External collaborators: Stefan Bertilsson and Silke Langenheder (Uppsala Uni.) and Thomas Backhaus (Uni. Gothenburg)

Synthesising the diversity-functioning relationship:
Through a collaboration that started with a NCEAS group (lead by Brad Cardinale, Emmett Duffy and Dave Hooper) we synthesise, with meta-analyses, the relationship between species richness and ecosystem functions (both single functions and multifunctionality).
People involved: Lars Gamfeldt
External collaborators: Jarrett Byrnes (UMass, USA), John Griffin (Swansea, UK), Jon Lefcheck (VIMS, USA), Emmett Duffy (Smithsonian, USA), Brad Cardinale (U. Michigan, USA), Forest Isbell (U. Georgia), and Dave Hooper (Western Washington U., USA)

Photo: Nic Kruys

Photo: Nic Kruys

Tree biodiversity and ecosystem services:
We are interested in studying how variation in tree species composition and diversity is related to variation in forest ecosystem services. To this end, we use data from the Swedish national forest inventory which covers the whole of Sweden, and which estimate the levels of a range of forest attributes related to services of highly value to human society.
People involved: Lars Gamfeldt (PI)
Main external collaborators: Tord Snäll, Lena Gustafsson and Janne Bengtsson (SLU, Sweden), Micael Jonsson and Jon Moen (Umeå Uni., Sweden), and Robi Bagchi and Chris Philipson (Zürich, Switzerland)

 

Multiple stressors and ecosystem multifunctionality:
Ecosystems are subject to cumulative stressors, and these stressors can have deleterious effects on ecosystem functioning. This project uses data from published experiments on shallow-water marine communities dominated by microalgae, to examine how these systems are affected by single and joint stressors.
People involved: Lars Gamfeldt
External collaborators: Christian Alsterberg (PI) and Kristina Sundbäck (Uni. Gothenburg)

Habitat diversity and ecosystem multifunctionality:
In this project we collect natural shallow-water marine communities (habitats), place them in mesocosms in various combinations, and study how the diversity of habitats is related to multiple ecosystem functions.
People involved: Lars Gamfeldt
External collaborators: Christian Alsterberg (PI) and Kristina Sundbäck (Uni. Gothenburg)

Climate change and biodiversity loss in eelgrass beds:
Through a set of mesocosm experiments, we study how changes in ocean pH, temperature and biodiversity affect a range of ecosystem processes in eelgrass (Zostera marina) systems.
People involved: Lars Gamfeldt
External collaborators: Johan Eklöf (Stockholm Uni., Sweden) (PI), and Jon Havenhand and Christian Alsterberg (Uni. Gothenburg, Sweden)

The structure and functioning of eelgrass:
The Zostera Experimental Network (ZEN) is a global collaborative network of scientists studying the structure and functioning eelgrass (Zostera marina) ecosystems. ZEN is conducting experiments that aim to quantify how resources and grazing interactively affect biomass, production, and trophic transfer in eelgrass beds along natural gradients in biodiversity and abiotic forcing.
People involved: Lars Gamfeldt
Main external collaborators: Emmett Duffy (Smithsonian, USA) (PI), Johan Eklöf (Stockholm Uni., Sweden), and many others