College of Marine Life Sciences and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China; Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao 266033, China.
Mar Pollut Bull. 2021 Jun;167:112348. doi: 10.1016/j.marpolbul.2021.112348. Epub 2021 Apr 14.
Characteristics of macrofaunal assemblages and their relationships with environmental factors in a semi-enclosed bay were studied seasonally in China. A total of 251 species were identified, including polychaetes (104 species), crustaceans (73 species), mollusks (51 species), and other phyla (23 species). Mean values of macrofaunal abundance were 1210, 2483, 3209, 3600 ind./m while those of biomass were 56.88, 176.15, 136.28, 265.55 g/m, respectively. Ranges of species richness index, evenness index, Shannon-Wiener index were 1.54-8.16, 0.17-0.90, 0.69-4.78, respectively. The diversity indices were affected by bottom water salinity and pH. BIOENV analysis showed that water depth, phaeophorbide, and silt-clay proportion had important impacts on macrofaunal assemblages while abundance and biomass were affected by bottom water temperature, salinity, and water depth. Compared with historical data, macrofaunal species number, abundance and biomass showed a slight increasing trend, which may be due to the water quality improvement of this bay.
在中国，对一个半封闭海湾的大型底栖动物群落特征及其与环境因素的关系进行了季节性研究。共鉴定出 251 种，包括多毛类（104 种）、甲壳类（73 种）、软体动物（51 种）和其他门（23 种）。大型底栖动物丰度的平均值分别为 1210、2483、3209、3600 ind./m，生物量的平均值分别为 56.88、176.15、136.28、265.55 g/m。物种丰富度指数、均匀度指数和香农-威纳指数的范围分别为 1.54-8.16、0.17-0.90、0.69-4.78。多样性指数受底层水盐度和 pH 值的影响。BIOENV 分析表明，水深、藻胆素和粉砂-粘土比例对大型底栖动物群落有重要影响，而丰度和生物量则受底层水温度、盐度和水深的影响。与历史数据相比，大型底栖动物的物种数量、丰度和生物量呈轻微增加趋势，这可能是由于该海湾水质的改善。
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