Site Observations:

Observation Date

1st Jan 1963 – 1st Jan 1967

Action Summary:

Treatment with quicklime was used to remove urchins at Imperial Beach and an adult Macrocystis transplant was introduced. During the winter of 1964-1965, four acres of bottom were treated with quicklime, and 40 adult kelp plants were transplanted to the region.

Lessons Learned:

This site was abandoned due to high recruitment and grazing by sea urchins.

Project Outcomes:

By fall 1967, only three plants remained and these were destructively grazed. Three juvenile plants were found, representing the second generation of kelp in the area. In spring and summer 1967, dense concentrations of urchins appeared at the borders of the region covered by seaweed.

Nature of Disturbance:

The young kelp plants attracted fish, and intense grazing occurred, gradually reducing transplant numbers.

Key Reasons For Decline:

Multiple

Area of Restoration (Ha)

1.6

Indicator Data:

Indicator:	Ending Value:	Starting Value:
Adult Kelp Count	3.0000	40.0000

California Department of Fish and Wildlife - Imperial Beach

Restoration Project

California Department of Fish and Wildlife - Imperial Beach

Restoration Objective:

Site Selection Criteria:

Cause Of Decline:

Multiple

Kelp Habitat Improvement Project. Annual Report 1

Organisation:

California Department of Fish and Wildlife

Site Observations:

1st Jan 1963 – 1st Jan 1967

Action Summary:

Lessons Learned:

Project Outcomes:

Nature of Disturbance:

Multiple

1.6

Indicator Data:

Indicator:

Ending Value:

Starting Value:

Adult Kelp Count

5. Is Assessed Against Clear Goals And Objectives, Using Measurable Indicators

4. Supports Ecosystem Recovery Processes

6. Seeks The Highest Level Of Ecosystem Recovery Possible

2. Draws On Many Types Of Knowledge

1. Engages Stakeholders