SONGS Mitigation Monitoring: Experimental Reef Survey - Giant Kelp Outplant Size-Specific Survivorship

These data describe the size-specific survivorship of laboratory-reared embryonic giant kelp, Macrocystis pyrifera, outplanted at an artificial reef (Wheeler North Reef in Orange County, CA). In summer 2000 divers deployed an average of 56 outplant units containing embryonic kelp to 14 modules of Wheeler North Reef. Size specific survivorship was measured by recording the number and size of outplanted kelp on surviving outplant units three and eleven months after deployment. Measurements of size were categorical and included small single blades (recruits), multi-bladed plants less than 1m tall, and multi-frond plants equal or greater than 1 m tall.