Provision of refugia and seeding with native bivalves can enhance biodiversity on vertical seawalls
Thea E Bradford, Juan C Astudillo, Edward TC Lau, Matthew J Perkins, Chi C Lo, Tom CH Li, Chung S Lam, Terence PT Ng, Elisabeth MA Strain, Peter D Steinberg, Kenneth MY Leung
MARINE POLLUTION BULLETIN | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2020
Recent studies have suggested that increasing habitat complexity of artificial seawalls by modifying surface heterogeneity could enhance exploitable habitat and therefore species richness and abundance. We tested the effects of adding complex tiles (with crevices/ledges) of different heterogeneity (i.e., flat tiles resembling the seawall vs. tiles with crevices of 2.5 cm or 5.0 cm depth) and seeding with native rock oysters, Saccostrea cuccullata (unseeded vs. seeded) on species richness and abundances of intertidal marine organisms on two vertical seawalls in Hong Kong. Tiles were affixed to the mid-intertidal zone of the seawalls for 12 months. The results showed that the tiles with crevic..View full abstract
Awarded by Civil Engineering and Development Department
Awarded by National Research Foundation, Prime Minister's Office, Singapore, under its Marine Science Research and Development Programme
The authors would like to thank the Civil Engineering and Development Department (CEDD) of the Government of the Hong Kong Special Administrative Region of China for supporting this project in terms of provision the two trial sites, professional advices on engineering aspects, and funding support to other trials of eco-engineered shorelines in Hong Kong. TE Bradford, JC Astudillo, ETC Lau, CC Lo and CH Li were partially supported by The Civil Engineering and Development Department (Project numbers: FM 03/2018 and PW 2/2017-014). We also sincerely thank the School of Biological Sciences of the University of Hong Kong, the World Harbour Project and Sydney Institute of Marine Science for providing financial, logistic and manpower supports to make this work possible. This research is partially supported by the National Research Foundation, Prime Minister's Office, Singapore, under its Marine Science Research and Development Programme (Award No. MSRDP-05). We are also grateful to Prof. Gray A. Williams for providing equipment for the implementation of the study and comments on an early draft of the manuscript.