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Imam Bahtiar, Imam
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Earth & Planetary Sciences Other

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Assessing Ecological Resilience of Eastern Indonesian Coral Reefs Bahtiar, Imam; Damar, Ario; _, Suharsono; Zamani, Neviaty P
Journal of Indonesian Coral Reefs Vol 1, No 2 (2011)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Eastern Indonesian reefs are located on the CTI region, that understanding their ecological resiliencies are therefore very important for management of the region. Coral reef resilience was assessed using a resilience index on the 2009 Coremap data. Resilience index used in the assessment was developed by the author but published elsewhere. The study included 7 districts in eastern Indonesia: Pangkep (Pangkajene Kepulauan), Selayar, Buton, Wakatobi, Sikka, Raja Ampat and Biak. The results showed that coral reefs at Wakatobi had the highest average resilience indices, while Sikka had the lowest one. High resilience index at Wakatobi coincided with high number of coral functional groups (life forms) and coral cover. Low average resilience index at Sikka coincided with high algae and other fauna covers. Raja Ampat had coral reefs with a fair resilience index which is similar to coral reefs at Pangkep and Selayar.
A Model for Estimating Coral Species Richness of Indonesian Coral Reefs Bahtiar, Imam; Budiyanto, Agus
Journal of Indonesian Coral Reefs Vol 1, No 1 (2011)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Marine biodiversity at species level is crucially important ini ecological  assessment and aceosystem management. Data on coral richness, however, are very race for many reefs in Indonesia, due to low number of available coral taxonomist in many provinces and districts. The objective of present sudy was to find a regression model for estimating species richness of Scleractinian corals, based on line-intercept-transect data. Wakatobi and Pangkep (Pangkajenne Kepulauan). The result showed that coral species richness can be estimated from three predictor variables: coral acroporiid covers (CAC), coral masive and submassive cover (CMS), and number of coral genera(CGR). Develop multiple regression model showed considerably high cooficient of determination (73.55%) in estimating coral species richness. Model validation using data from coral reefs on Lembaga waters showed that the model worked well, i.e. estimated and in situ recordered species richness are strongly correlated.
Co-Authors Agus Budiyanto Damar, Ario Neviaty P Zamani Suharsono _, Suharsono