Ecosystem connectivity: tracking biochemical fluxes to inform ecosystem based management
We are tracing the fate of water and sediments from land through coastal food webs, evaluating connections between coastal and deep sea habitats, and identifying the effects of key coastal developments (for example, aquaculture) on food web connectivity.
Project leader: Steve Wing, University of Otago
Duration: April 2016 – June 2019
Effective restoration and recovery of Aotearoa New Zealand’s coastal ecosystems relies on accurate information about their function and the influence of human activities. Our research will help guide effective decision-making by providing information on the connections that are vital for productive, healthy ecosystems.
Our team uses advanced forensic chemistry to understand ecosystem connectivity. We are tracing movement of organic matter, nutrients, metals and contaminants through marine food webs and investigating how they are processed and channelled. Changes in these biochemical fluxes can shape ecological function and the provision of ecosystem services.
We are focussing on three systems where human activities have changed, and are continuing to change ecological function:
- Coastal and offshore fisheries – we are studying the effects of environmental change and removal of marine resources on the food web structure of coastal and offshore fisheries from pre-industrial to present times.
- Shellfish survival – we are studying how changes in land-use have influenced uptake of organic matter and contaminants by bivalve populations (including cockles, mussels, scallops and horse mussels).
- Commercial fish farms – we are studying how waste materials from salmon farming operations are taken up and processed by natural food webs.
In the media:
- 'Seaworthy' scientists outrun ex-Cyclone Gita as they flee Sounds, Stuff Professor Steve Wing from Otago University and the team working on ecosystem connectivity were in the news during Cyclone Gita
Latest news and updates
Sustainable Seas National Science Challenge researchers are hoping that marine health data gathered on a recent field trip to Queen Charlotte Sounds will support more integrated management of the ecosystem.
The Sustainable Seas National Science Challenge leadership team have proposed seven major principles for ecosystem-based management (EBM) in Aotearoa New Zealand.
The Sustainable Seas research team led by Dr John Reid and Dr Jason Mika have identified five key factors that will drive growth of the Māori marine economy: