Kelp forest monitoring. Channel Islands National Park (1991 annual report). Final technical report
This document describes the 1991 progress of the Channel Islands National Park Kelp Forest Monitoring Project. Population dynamics of 68 indicator species of algae, fish, and invertebrates were measured at 16 permanent transect sites in 1991 by divers using SCUBA and surface-supply-air. Survey dives were conducted at seven other locations for comparisons and general information. In 1991, nine sites had healthy kelp forests. Five others had some kelp growing on or near the transect, but were dominated somewhat by sea urchins. White sea urchins were present in moderate to high numbers at four sites with declines at two sites and an increase at one. Juvenile fish recruitment was down in 1991; however, young-of-year rockfish were numerous at San Miguel Island and juvenile sheepland and garibaldi were common at Santa Barbra and Anacapa Islands. Abalone recruitment modules proved effective at concentrating juveniles of several species. This year was a poor recruitment year for abalone.
- Research Organization:
- Channel Islands National Park, Ventura, CA (United States)
- OSTI ID:
- 220494
- Report Number(s):
- PB-96-152434/XAB; TRN: 60921813
- Resource Relation:
- Other Information: DN: Also pub. as California Univ., Davis. Cooperative National Park Resources Studies Unit rept. no. CPSU-UCD-TR-53. See also report for 1990, PB--96-152426 and report for 1992, PB--96-152442; PBD: Jun 1993
- Country of Publication:
- United States
- Language:
- English
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