Kelp forest monitoring 1992 annual report. Channel Islands National Park. Final report
The 1992 results of the Channel Islands Natioanl Park Kelp Forest Monitoring Project are described in this report. Population dynamics of 68 taxa or categories of algae, fish, and invertebrates were measured at 16 permanent sites around the five islands within the park. Survey techniques utilized SCUBA and surface-supplied-air, and included quadrats, band transects, random point contacts, fish and video transects, photogrammetric plots, size frequency measurements, artifical recruitment habitats, and species list surveys. Some batheothermograph data was collected. In 1992, nine sites and healthy kelp forests while seven were mostly barren. The seven barren sites consisted of one that was dominated by the aggregated red sea cucumber, Pachythyone rubra, one was barren with high sedimentation, one was domainated by red sea urchins, Strongylocentrotus franciscanus, and four sites were dominated by purple sea urchins, Strongylocentrotus purpuratus, three of which had signs of a developing kelp forest. Wasting disease was observed in sea stars and a wasting syndrome was observed in sea urchins. Fish recruitment appeared to be late this year. Size frequency measurements were taken from artificial recruitment modules (previously named `abalone recruitment modules`) at six of the sites.
- Research Organization:
- Channel Islands National Park, Ventura, CA (United States)
- OSTI ID:
- 220495
- Report Number(s):
- PB-96-152442/XAB; TRN: 60921814
- Resource Relation:
- Other Information: DN: See also report for 1991, PB--96-152434 and report for 1993, PB--96-152459; PBD: 1992
- Country of Publication:
- United States
- Language:
- English
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