Substrate Enhancement - Electric — Quezon Island

OPP-K57FMJpermanent identifier · cite as oceanportfolio.org/p/OPP-K57FMJ

Published as: Long-term effects of induced mineral accretion on growth, survival and corallite properties of Porites cylindrica Dana. | Technique: Substrate Enhancement - Electric | Genera: Porites | Method: Branches of Porites cylindrica were reared under the presence of mineral accretion (treated nubbins), without mineral accretion (untreated), and under undisturbed (control) conditions for 6 months (mineral accretion phase). The electricity for the treated nubbins was cut off after the sixth month, and all remaining nubbins were allowed to grow for another 6 months (post mineral accretion phase). Each treatment had three replicates resulting in a total of nine experimental grids. The replicate g… | Survival of transplants reported by the source: 91.6667% | Post-restoration monitoring: 12 months | Authors' conclusion: Growth enhancement occurred only during the early stages of the mineral accretion phase. There were also significant differences in girth growth between phases and between treatments as well as a significant phase by treatment interaction again indicating that significant differences between treatments occurred only during a certain phase. The treated nubbins survived better than the untreated nubbins. The corals in all treatments showed the same trend in corallite size and density after 1 year. Enhancement of growth took place only during active mineral accretion, though there were positive,… | This record was compiled from a published source and has not been confirmed by the organisation that carried out the work. No contribution to the condition index is recorded: the source reports survival of transplanted material, which is not a measure of ecosystem condition.

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