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Suharsono _, Suharsono
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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.
Distribution and Abundance of Black Band Disease on Corals Montipora sp in Seribu Islands, Jakarta Johan, Ofri; Bengen, Dietriech G; Zamani, Neviaty P; _, Suharsono
Journal of Indonesian Coral Reefs Vol 1, No 3 (2012)
Publisher : Journal of Indonesian Coral Reefs

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Research on the abundance and distribution of coral disease has been implemented since June andJuly 2011 to determine the preliminary abundance of coral disease on several islands in the Thousand Islands, Jakarta. Observation method used was a 20m-belt transect with 1 m width to the left and right, and 3 replicates. Transects placed on the reef flat with a depth of 0–3 m, and a record number of infected colonies of BBD. The results show that type coral diseases of BBD found in many high coral covers and where Montipora sp dominant at that location. Generally, highest abundances found were at northern of Pramuka Island (0.15 col/m), eastern of Pari Island (0.092 col/m), Penjaliran Island (0.092 col/m), and Tikus Island (0.085 col/m). Statistical test by ANOVA obtained that abundance of BBD was significantly different between groups of study sites, i.e. the distance between the nearest and middle sites, and between the nearest and farthest distance from the mainland of Java Island (significantly difference with value respectively 0.030 and 0.025; confidence level 5%). Meanwhile, the sites between middle and farthest show no real difference. Based on climatological data, the increase in temperature in March and July could lead to coral diseases that occured in the Thousand Islands region.
Co-Authors Damar, Ario Dietriech Geoffrey Bengen Imam Bahtiar, Imam Neviaty P Zamani Ofri Johan