Get Inspired - Laguna Beach, Heisler Park

Restoration Project

Get Inspired - Laguna Beach, Heisler Park

Restoration Objective:

This project aimed to restore historical giant kelp forests (Macrocystis pyrifera), educate students and the general public about the importance of healthy kelp forests and monitor reef restoration.

Site Selection Criteria:

Restored sites historically hosted forests of giant kelp (Macrocystis pyrifera). Restoration sites were chosen that had significant low lying rocky substrata suitable for kelp growth. All contained areas of sand as well.

Cause Of Decline:

In high numbers, sea urchins can overgraze seaweed communities. On reefs with high densities of sea urchins, the structure of the algal community is damaged, and the abundance and diversity of invertebrates is reduced.

Scientific Paper

Orange County Giant Kelp Restoration Project. Annual Report 2008. 7pp.

Nancy Caruso


Site Observations:

Observation Date

Action Summary:

Volunteer divers transplanted kelp, conducted urchin removals, deployed spore bags and conducted monitoring of fish, algae and invertebrates using video surveys and quadrats.

Lessons Learned:

There was no data on kelp transplant success or methods in this project.

Project Outcomes:

In Crystal cove, red urchin density was lower in restoration sites, while purple urchin density was higher in restoration sites. In Laguna beach, both red and purple urchins were lower in density at restoration sites.

Indicator Data:


Ending Value:

Starting Value:

Percent Survival