Restoration Objective:

This project aimed to restore kelp forests to rocky reefs to improve the biomass and productivity associated with rocky reefs. It also aimed to engage the local community in management of the kelp forest ecosystem.

Site Selection Criteria:

Sites were selected that historically had populations of kelp.

Cause Of Decline:

California kelp forests have been severely depleted by human activity, mainly overfishing, which has caused several ecological shifts within the habitat, primarily attributed to the loss of key predator species, including otters and predatory fish. This has resulted in an increased abundance of sea urchins, contributing to kelp overgrazing.

Key Reasons For Decline:

Overgrazing

Scientific Paper

Palo Verdes kelp forest restoration project, year 5: July 2017–June 2018. The Bay Foundation

P. House, A. Barilotti, H. Burdick, T. Ford, J. Williams, C. Williams, D. PondellaLos Angeles CA.https://cms.santamonicabay.or...r-5-Annual-Report-2018-2.pdf

Organisation:

Bay Foundation

Site Observations:

Observation Date

1st Jul 2013 – 30th Jun 2017

Action Summary:

Citizen scientists culled urchins, reducing sea urchin density from as high as 100 sea urchins per square meter to < 2 sea urchins per square meter.

Lessons Learned:

This project shows the success of using community engagement and in particular collaboration with commercial urchin fishers to curb urchin density for kelp restoration. Urchins were removed periodically when densities were seen to increase above 2 urchins per square metre.

Project Outcomes:

In year 4, 5.1 acres were restored at Marguerite for a total of 13.9 acres in Marguerite since August 2014. Restoration actions have been completed at this site as of March 2017.

Key Reasons For Decline:

Overgrazing

Area of Restoration (Ha)

5

Indicator Data:

Indicator:	Ending Value:	Starting Value:
Presence / Absence of Kelp

Bay Foundation - Marguerite

Bay Foundation - Marguerite

Restoration Project

Bay Foundation - Marguerite

Restoration Objective:

Site Selection Criteria:

Cause Of Decline:

Overgrazing

Palo Verdes kelp forest restoration project, year 5: July 2017–June 2018. The Bay Foundation

Organisation:

Bay Foundation

Site Observations:

1st Jul 2013 – 30th Jun 2017

Action Summary:

Lessons Learned:

Project Outcomes:

Overgrazing

5

Indicator Data:

Indicator:

Ending Value:

Starting Value:

Presence / Absence of Kelp

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