11th ICRS Abstract book - Nova Southeastern University

24.1112
Coral Recruitment On Reef Ball Structures At The Benete Bay, Sumbawa Island,
Indonesia
Imam BACHTIAR* 1 , Windy PRAYOGO 2
1 Biology Education, Universitas Mataram, Mataram, Indonesia, 2 Environment, PT
Newmont Nusa Tenggara, Mataram, Indonesia
Reef ball structure is a popular artificial reef that has been invested in many countries.
Publication on its efficacy in promoting coral recruitment however remains lack of study
or publication. This present study is aimed to examine the pattern of coral recruitment on
reef ball structure at the Benete Bay of Sumbawa Island, Indonesia. Thirty big size reefballs
were censuses after three years of deployment. All of these structures were deployed
on a sandy bottom location in a sheltered bay. The results show that nearly all coral
colonies grow on the vertical surface and upper side of the reef balls. Recruit number
varies among depths, between 1-69 colonies per unit reef balls. Most recruits are
belonging to the Family Acroporidae, which contribute about 76% to the whole
recruitment. Branching acroporid is the most abundant colonies (55%). Pocilloporidae
and Faviidae both contribute about 9% to the total recruitment, while Poritidae
contributes about 3%. Other coral families only has