University of Tasmania - Lindisfarne

Restoration Project

University of Tasmania - Lindisfarne

Restoration Objective:

The objective of restoration was to improve Macrocystis pyrifera beds in Tasmania, as they are thought to be declining, and provide food and shelter for a wide range of animals and plants.

Site Selection Criteria:

Transplant sites were chosen that had a reef substrate and were exposed to a moderate amount of wave action. Sites were chosen at progressive distances up the river in case there was some factor that moderated downstream such as pollution.

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.

Key Reasons For Decline:

Ocean warming

Scientific Paper

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.

C. Sanderson
Tasmania, Australia.

Site Observations:

Observation Date

17th Sep 2000 – 16th Mar 2002

Action Summary:

Each site (deep and shallow) was marked with a concrete tyre with a subsurface buoy. These buoys were relocated using GPS. Around each site, plants of other species were cleared. These were principally the kelps Ecklonia radiata and Phyllospora comosa. To test for differences with depth of recipient sites, planting of Macrocystis was trialled at 6m and 11m. At each site, when transplanting, mature sporophylls from the donor sites were also attached to the base of the tyres and sporelings were dispersed around the concrete tyre markers.

Lessons Learned:

Multiple transplant efforts were employed.

Project Outcomes:

No description.

Key Reasons For Decline:

Ocean warming

Indicator Data:


Ending Value:

Starting Value:

Adult Kelp Count