Restoration Project

California Department of Fish and Wildlife - Portugeuse Point

Restoration Objective:

The objective of restoration was to increase ecosystem services.

Cause Of Decline:

Macrocystis pyrifera beds along the southern California coast were relatively stable prior to 1940. Declines were first reported in 1945 in areas nearest major sewage outfalls. This deterioration progressively affected beds at increasing distances from the outfalls, leaving small patches. Deterioration of kelp accelerated when an influx of warm oceanic water persisted off California from 1957-1959.

Key Reasons For Decline:

Multiple

Scientific Paper

The Marine plant biomass of the Pacific Northwest coast (Chapter: Kelp Restoration in Southern California)

K.C. Wilson, P.L. Haaker, D.A. Hanan, .https://scholar.google.com/ci...ew=cKp7ZgoAAAAJ:d1gkVwhDpl0C

Organisation:

California Department of Fish and Wildlife

Site Observations:

Observation Date

1st Aug 1976 – 1st Jan 1977

Action Summary:

At Portuguese Point, several thousand adult and juvenile Macrocystis plants were transplanted, mass cultures were dispersed, and gill netting was used to reduce large numbers of herbivorous fishes.

Lessons Learned:

This study transplanted juvenile and adult kelp plants from healthy kelp beds to new areas and focused on sea urchin control to ensure successful transplantation.

Project Outcomes:

At Portuguese point, kelp was first observed in 1976 (0.03ha), increasing to 0.08ha in 1977.

Key Reasons For Decline:

Multiple

Area of Restoration (In Square Metres)

800

Indicator Data:

Indicator:

Ending Value:

Starting Value:

Area

800
m2
0
m2
Costings:
Cost Currency:USD