The objective of this project was to restore Macrocystis pyrifera in Tasmania, as it is thought to be declining and provides habitat and food for a wide range of species.
Site Selection Criteria:
Sites were selected where Macrocystis was present historically, but in more wave exposed waters where there are fewer urchins and there is likely to be greater nutrient availability.
Cause Of Decline:
Concern has been raised over the state of Macrocystis pyrifera forests in Tasmania due to the perceived loss of the alga around the Tasmanian coastline. The alga is thought to be highly productive and provides food and shelter for a wide range of animals and plants. Possible reasons for the decline include overharvesting, overfishing of lobsters (leading to increases in urchins), increased boat traffic, sediment disturbance, invasive species, warming waters and El Niño.
Restoration of string kelp (Macrocystis pyrifera) habitats on Tasmania's east and south coasts. Final Report to Natural Heritage Trust for Seacare. Technical Report. Tasmania, Australia.