Restoration Objective:
Evaluate sea urchin removal as a tool for restoration.
Site Selection Criteria:
2.0 ha area. Large, discrete area (e.g. bays, bounded by sand or narrow margins) to restrict sea urchin ingress. One of four sites chosen across the Hauraki Gulf with varying environmental conditions. Sea urchins removed in Feb 2021.
Cause Of Decline:
Overharvest of sea urchin predators
Key Reasons For Decline:
Overgrazing
Scientific Paper
Large-scale one-off sea urchin removal promotes rapid kelp recovery in urchin barrens
Restoration ecology.
https://doi.org/10.1111/rec.14060 
