Analysis of the community structure characteristics of seaweed beds in the Miaodao Archipelago

LI Baoqi; CHEN Weizhou; WANG Ning; JIANG Huichao; ZHUANG Mingkun; LV Zhengzheng; ZHANG Qi; GUO Xiaoqian; XU Zhiguang

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LI Baoqi，CHEN Weizhou，WANG Ning, et al. Analysis of the community structure characteristics of seaweed beds in the Miaodao Archipelago[J]. Haiyang Xuebao，2026, 48(x)：1–12

Citation:

LI Baoqi，CHEN Weizhou，WANG Ning, et al. Analysis of the community structure characteristics of seaweed beds in the Miaodao Archipelago[J]. Haiyang Xuebao，2026, 48(x)：1–12

Citation:

LI Baoqi，CHEN Weizhou，WANG Ning, et al. Analysis of the community structure characteristics of seaweed beds in the Miaodao Archipelago[J]. Haiyang Xuebao，2026, 48(x)：1–12

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Analysis of the community structure characteristics of seaweed beds in the Miaodao Archipelago

1.
School of Life Sciences, Ludong University, Yantai 264025, Shandong
2.
Institute of Marine Biology, Shantou University, Shantou 515063, Guangdong
3.
Shandong Marine Resources and Environment Research Institute, Yantai 264006, Shandong

Received Date: 2025-12-31
Rev Recd Date: 2026-02-05

Available Online: 2026-03-02

Abstract

Abstract

The Miaodao Archipelago in Shandong Province are rich in seaweed resources and hold great potential for nearshore marine carbon sinks. However, fundamental data and research related to the seaweed beds in this region remain scarce, which astricts the calculation and evaluation to carbon sink of seaweed beds. Therefore, this study aimed to complement the gap in baseline information regarding seaweed beds in the Miaodao Archipelago. In this study, 10 residential islands of Miaodao archipelago in Shandong Province were selected and the distribution of seaweed fields in the subtidal zone was investigated and sampled by scuba diving. Seaweed resource information in the seaweed beds, including the distribution and area of seaweed beds, species composition, biomass, dominant species, and community diversity, was identified and counted, and then combined with the environmental context, the community structure characteristics of the seaweed beds in the 10 islands were clustered. A total of 34 species of macroalgae were collected, belonging to 21 families and 25 genera. Among them were 18 species of red algae (11 families, 15 genera), 4 species of green algae (2 families, 2 genera), and 12 species of brown algae (8 families, 8 genera). The dominant macroalgal species in the region included Saccharina japonica, Undaria pinnatifida, Sargassum muticum, Gelidium amansii, Chondrus nipponicus, Ulva lactuca, Dictyopteris divaricata, Sargassum pallidum, and Desmarestia viridis. The results of statistical analysis revealed that Tuoji Island and Xiaoqin Island had relatively high biomass density. Nouth Changshan Island exhibited the highest species richness, followed by Miao Island and South Huangcheng Island. South Huangcheng Island had the highest diversity index, with Nouth Changshan Island and Tuoji Island ranking next, and also showed the highest evenness index among the surveyed sites. Cluster analysis results indicated significant differences in community structure between the five southern islands (South Changshan Island, North Changshan Island, Miao Island, Daheishan Island, Xiaoheishan Island) and the five northern islands (Tuoji Island, Daqin Island, Xiaoqin Island, South Huangcheng Island, North Huangcheng Island), mainly due to geographic variation. This study helps complement the gap in baseline information regarding seaweed beds in Shandong Province, thus providing essential data for the carbon sink evaluation and theoretical support for development of nearshore blue carbon sink of seaweed beds in Shandong Province.
- Miaodao Archipelago,
- macroalgae,
- species diversity,
- dominant species

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References(55)

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