Population dynamics and growth rates of free-living mushroom corals (Scleractinia: Fungiidae) in the sediment-stressed reefs of Singapore

摘要: Abstract The reefs of Singapore provide an excellent opportunity to study the population dynamics and growth rates free-living mushroom corals (Fungiidae) under sediment-stressed conditions. Transect surveys at four sites revealed a total 11 coral species—the same species as those found by local studies since 1980s. abundance most common ranged from 1.0 68.3 Ind. per 100 m2, while their size-structure showed pattern higher proportion small-sized than large-sized ones (i.e. positively skewed size-structure), although very few individuals smallest-size classes were recorded for any species. A more each was observed reef slope (5–6 m depth) crest (2–3 m depth), possibly due slower rate caused light reduction with depth. All studied exhibited decline in increasing size weight, indicating determinate growth. Growth similar among sites, despite variation environmental Our results demonstrate richness stability over past three decades, suggesting that these assemblages comprise are well-adapted chronic high sedimentation characteristic Singapore's reefs. However, if paucity reflects poor recruitment and/or early mortality, there may be some cause concern. robust baseline data can contribute long-term monitoring strategy determination changes dynamics.