海洋科学2025，Vol.49Issue(8)：22-33,12.DOI:10.11759/hykx20250824001
蜈支洲岛珊瑚礁区大型底栖贝类生物群落结构及碳储量评估
Assessment of macrobenthic mollusk community structure and carbon content in the coral reef area of Wuzhizhou Island
摘要
Abstract
This study investigated the characteristics of macrobenthic mollusk communities and their carbon storage capacity in the coral reef ecosystem of Wuzhizhou Island by establishing 13 survey transects that were uniformly set up around the island and performing a systematic survey of the macrobenthic mollusk resources.Through com-prehensive analysis of the survey data,this study elucidated the species composition,distribution of the dominant species,biodiversity patterns,and habitat correlations of the mollusk communities.In addition,their carbon se-questration function was evaluated based on the carbon content measurements of the collected samples.The results revealed that the macrobenthic mollusk communities consisted of 34 species of mollusks,including 22 gastropods and 12 bivalves.Ten dominant species were identified using the index of relative importance(IRI),with Turbo chrysostomus and Chicoreus asianus being the primary dominants across all stations.The average mollusk abun-dance and biomass were 0.36 ind./m² and 15.69 g/m²,respectively.Correlation analyses revealed a negative rela-tionship between the total mollusk abundance and coral cover.Reishia luteostoma and Periglypta lacerata exhibited strong positive associations with rocky substrates,while T.chrysostomus and Mauritia arabica asiatica were posi-tively correlated with sandy substrates.The biodiversity indices,including diversity index(H'),evenness index(J'),and richness(d),were relatively higher at transects with lower coral coverage(transects 1,9,and 11).The carbon content rates of the mollusk shells ranged from 12.1%to 14.3%,while those of the soft tissues ranged between 22.2%and 44.4%.Moreover,the carbon storage per unit area in the shell component of the Wuzhizhou Island coral reef area was 1.47 g/m2,and that of the soft tissues was 0.18 g/m2.Furthermore,the spatial variations in carbon storage density were consistent with the mollusk abundance patterns across the different transects.These findings provide a reference for biodiversity conservation and carbon storage assessment in coral reef ecosystems.关键词
珊瑚礁/底栖贝类/群落结构/底质/碳储量Key words
coral reef/benthic mollusk/community structure/substrate/carbon storage分类
农业科技引用本文复制引用
刘敬灿,周杜源,綦晓青,洪鑫,孙云超,王爱民,刘春胜,吕淑果..蜈支洲岛珊瑚礁区大型底栖贝类生物群落结构及碳储量评估[J].海洋科学,2025,49(8):22-33,12.基金项目
国家重点研发计划资助项目(2022YFD2401305,2022YFD2401301) （2022YFD2401305,2022YFD2401301）
三亚科技"繁星"专项项目(2024KJFX019) （2024KJFX019）
国家自然科学基金资助项目(42266003) Supported by the National Key Research and Development Program of China,Nos.2022YFD2401305,2022YFD2401301 （42266003）
Sanya Science and Technology Star Project,No.2024KJFX019 （）
National Natural Science Foundation of China,No.42266003 （）
