Hong Kong's subtropical scleractinian coral communities: Baseline, environmental drivers and management implications
2021
Yeung, Yip Hung | Xie, James Y. | Kwok, Chun Kit | Kei, Keith | Ang, Put | Chan, Leo Lai | Dellisanti, Walter | Cheang, Chi Chiu | Chow, Wing Kuen | Qiu, Jian-Wen
We surveyed 41 sites to provide an updated baseline of Hong Kong coral communities. Five community types were identified, among them the most common one inhabited oceanic waters and dominated by both massive and upward-plating corals. The 41 sites had 2.1–79% coral cover; among them 21 in the eastern waters had >40% coral cover. Corals in several sites showed signs of external bioerosion or bleaching-induced damage. Sites in the southern waters had low coral cover. Both coral cover and generic richness correlated negatively with several water quality parameters including total inorganic nitrogen concentration and turbidity, indicating the development of Hong Kong's coral communities is constrained by water quality parameters. Management actions are proposed to reduce bioerosion, and to monitor sites affected by bleaching.
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