摘要
为探究三亚蜈支洲岛海洋牧场大型海藻种类和群落结构特征,于2023年4月至2023年6月对三亚蜈支洲岛海洋牧场区12个不同站位进行采样调查。结果表明,在三亚蜈支洲岛海洋牧场的生物调查中,采集到29种大型海藻,其中红藻门17种,绿藻门9种,褐藻门3种,优势种为脆叉节藻(Amphiroa fragilissima)和喇叭藻(Turbinaria ornata)。大型海藻的平均生物量为(2.40±1.89)g·m^(-2)。不同种类海藻的平均碳(C)、氮(N)含量分别为18.80%、0.98%,不同种类海藻的平均C/N比值为24.04±13.61。大型海藻群落的物种多样性指数(H′)、物种丰富度指数(D)、物种均匀度指数(J)平均值分别为1.28±0.59、5.60±4.61、0.87±0.70。聚类与排序结果表明,12个站位被分为3个聚类组,组间SIMPER与ANOSIM分析结果表明3个聚类组之间的大型海藻群落结构有显著差异,群落结构基本分离。上述研究结果表明,三亚蜈支洲岛海洋牧场大型海藻种类丰富,但部分特定的优势种藻类和生境之间的差异导致不同聚类组间的群落结构有显著差异。
To explore the characteristics of macroalgae species and community structure in the Marine Ranch of Wuzhizhou Island,Sanya,sampling surveys were conducted from April 2023 to June 2023 at 12 different sites within the marine ranch area.A total of 29 species of macroalgae were collected,including 17 species from the Rhodophyta phylum,9 species from the Chlorophyta phylum,and 3 species from the Phaeophyta phylum.The dominant species were Amphiroa fragilissima and Turbinaria ornata.The average biomass of macroalgae was(2.40±1.89)g·m^(−2).The average carbon content and nitrogen content of different species of macroalgae were 18.80%and 0.98%,respectively,with an average C/N ratio of 24.04±13.61.The mean values of species diversity index(H′),species richness index(D),and species evenness index(J)of the macroalgae community were 1.28±0.59,5.60±4.61,and 0.87±0.70,respectively.Cluster and ordination analysis revealed that the 12 sites were grouped into 3 clusters.SIMPER and ANOSIM analyses indicated significant differences in the community structure of macroalgae among these three clusters,with basic separation of community structures.These results suggest that the Marine Ranch of Wuzhizhou Island,Sanya harbors a rich diversity of macroalgae,but significant differences in community structure exist among different clusters due to specific dominant species and habitat variations.
作者
田辉
覃乐政
何林文
Tian Hui;Qin Lezheng;He Linwen(School of Marine Biology and Fisheries,Hainan University,Haikou,Hainan 570228,China)
出处
《热带生物学报(中英文)》
2026年第1期144-154,共11页
Journal of Tropical Biology
基金
海南省自然科学基金青年基金项目(321QN0864)
海南大学科研启动基金项目(KYQD(ZR)20059)
海南大学协同创新中心科研项目(XTCX2022HYB07)。
关键词
蜈支洲岛海洋牧场
大型海藻
碳氮含量
物种多样性
群落结构
Marine Ranch of Wuzhizhou Island,Sanya
macroalgae
carbon and nitrogen content
species diversity
community structure
