Short-term decisions in lake restoration have long-term consequences for water quality
Ecological regime shifts from clear to turbid water states in shallow temperate lakes are quite well-investigated phenomena but critical time lags from human interaction with the lake and restoration activities are much less understood. This is a complex challenge for institutions who manage lakes but are usually less familiar with non-linear dynamics, slow and fast influences on water quality and how to manage those from a social-ecological perspective.
We extend a well-known minimal model of shallow lake regime shifts to enable simulations over time with short- and long-term management measures (nutrient reduction, trawling, planting of aquatic vegetation). While we explore the mathematical conditions for ecological bistability, we also identify the necessary and sufficient extent of measures to restore the clear water state. Restoration scenarios evaluated by trajectories in the state space demonstrate the increased effectiveness from combined measures even when considering countereffective activities such as pike fishing. But, single measures alone may delay or even miss the overall restoration target.
Our analysis demonstrates the importance of understanding transient dynamics where stable state analyses alone remain elusive about alternative ways to interact with bistability. We conclude that successful management of bistable systems, and particularly shallow temperate lakes, needs careful balancing between short-term improvements and long-term influence on the systems state.
Research news | 2023-06-02
More freshwater experts needed in the IPBES biodiversity panel
Centre researcher Jan Kuiper lists why and how more freshwater experts could contribute to the Intergovernmental Science–Policy Platform on Biodiversity and Ecosystem Services
General news | 2023-06-01
Centre researcher Juan Rocha elected into Young Academy of Sweden
Centre researcher Juan Rocha joins the Young Academy of Sweden, a junior version of the prestigious Royal Swedish Academy of Sciences, for a five-year term
Research news | 2023-05-31
Groundbreaking study quantifies safe and just Earth system boundaries
International commission proposes new safe and just boundaries for maintaining a healthy planet and protecting people from significant harm
Research news | 2023-05-25
AI could create a perfect storm of climate misinformation
The speed and the way misinformation about climate change and sustainability issues moves around the world is rapidly changing. Now, the Centre presents a new synthesis on AI and climate misinformation in connection to the Nobel Prize Summit 2023, "Truth, Trust and Hope"
Research news | 2023-05-22
Financial actors and academia join forces to build back biodiversity
Today is International Biodiversity Day! This year with the theme “From agreement to action: build back biodiversity”, and for us, that is a good reason to highlight the potential of the finance sector in reviving biodiversity
General news | 2023-05-17
Maria Tengö appointed special professor at Wageningen University
Maria Tengö is the most recently appointed professor at the Stockholm Resilience Centre