Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, People's Republic of China.
Botany & Microbiology Department, (Girls Branch), Faculty of Science, Al-Azhar University, Cairo, Egypt.
Sci Rep. 2023 Mar 1;13(1):3456. doi: 10.1038/s41598-023-29359-5.
Many Artificial Reefs (ARs) have been used worldwide for marine habitat and coral reef restoration. However, the microbial community structure that colonize the ARs and their progressive development have been seldom investigated. In this study, the successive development of the microbial communities on environmentally friendly Artificial Biological Reef structures (ABRs) made of special concrete supported with bioactive materials collected from marine algal sources were studied. Three seasons (spring, summer and autumn), three coral reef localities and control models (SCE) without bioactive material and (NCE) made of normal cement were compared. The structure of the microbial pattern exhibited successive shifts from the natural environment to the ABRs supported with bioactive materials (ABAM). Cyanobacteria, Proteobacteria, and Planctomycetota were shown to be the most three dominant phyla. Their relative abundances pointedly increased on ABAM and SCE models compared to the environment. Amplicon Sequence Variant (ASV) Richness and Shannon index were obviously higher on ABAM models and showed significant positive relationship with that of macrobenthos than those on the controls and the natural reef (XR). Our results offer successful establishment of healthy microbial films on the ABR surfaces enhanced the restoration of macrobenthic community in the damaged coral reefs which better understands the ecological role of the ABRs.
许多人工鱼礁(ARs)已在全球范围内用于海洋生境和珊瑚礁修复。然而,很少有研究调查了定植在人工鱼礁上的微生物群落结构及其渐进式发展。在这项研究中,研究了由特殊混凝土制成的环保型人工生物礁结构(ABR)上微生物群落的连续发展,这些结构中含有从海洋藻类来源收集的生物活性材料。比较了三个季节(春季、夏季和秋季)、三个珊瑚礁地点和对照模型(没有生物活性材料的 SCE)和由普通水泥制成的(NCE)。微生物模式的结构表现出从自然环境到支持生物活性材料的 ABR 的连续变化(ABAM)。蓝细菌、变形菌和浮霉菌被证明是最三个主要的门。与环境相比,它们在 ABAM 和 SCE 模型上的相对丰度明显增加。ABAM 模型上的扩增子序列变异(ASV)丰富度和 Shannon 指数明显更高,并与大型底栖动物的丰度呈显著正相关,而对照和自然礁(XR)则不然。我们的结果提供了在 ABR 表面成功建立健康微生物膜的实例,增强了受损珊瑚礁中大型底栖动物群落的恢复,从而更好地理解了 ABR 的生态作用。