Preservation of Rare Coral Species by Transplantation and Examination of Their Recruitment and Growth
Abstract:Three rare coral species found in Guam's only commercial harbor, which is undergoing a slow degradation caused by harbor pollutants, were transplanted into a bay and a lagoon unaffected by pollution. Each new habitat had three sites located at three depths (1.5 m, 4 m, and 10 m). Three transplant methods were used, fully grown coral heads of different sizes, broken shards, or branches scattered in large numbers, and coral nubbins attached to terra cotta bricks. Growth and survival were recorded over a 12 month period. Results showed that transplanting heads (regardless of size) was the best method for percent survival, mortality, growth rate and cost effectiveness. Controls showed the highest survival and growth rate for all species. The deepest sites had the least mortality for both habitats. Survival at the shallowest sites, which had the greatest mortality, was affected by wave action and light intensity.
Document Type: Research Article
Publication date: September 1, 1987
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