Biodiversity Science ›› 2019, Vol. 27 ›› Issue (10): 1112-1121.doi: 10.17520/biods.2018321

• Original Papers • Previous Article     Next Article

The structure of macrobenthic community in Pearl River Estuary

Zhou Xiping1, 2, *(), Li Zhen1, Wu Peifang1, Wu Xi1, Chen Yixin1, Liu Kangge1, Liu Dongyan3, Wang Yujue4, Wang Yueqi4   

  1. 1 School of Environmental Science and Engineering, Tan Kah Kee College, Xiamen University, Zhangzhou, Fujian 363105
    2 Key Laboratory of Estuarine Ecological Security and Environmental Health, Tan Kah Kee College, Xiamen University, Zhangzhou, Fujian 363105
    3 State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062
    4 Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences, Yantai, Shandong 264003
  • Received:2019-09-20 Accepted:2019-10-13 Online:2019-10-20
  • Zhou Xiping E-mail:zoeyzhou@xujc.com

The macrobenthic communities of estuaries are often indicative of important community traits, such as the environmental pollution a community may experience. To better understand the structure of Pearl River Estuary’s macrobenthic community, macrobenthic species were identified based on investigations carried out from November 2014 to August 2015, and biodiversity analyses were performed. More specifically, biodiversity index calculations, cluster analysis, and nMDS (non-metric MDS) analysis were performed used PRIMER 6.0 software. While 52 macrobenthic species were identified in the Pearl River estuary, the dominant species in this study area were Potamocorbula laevis, Glaucomya chinensis, Potamocorbula ustulata and Dendroneris pinnaticirrus. The annual mean density of macrobenthos in the Pearl River Estuary was 269.3 ind./m 2 and the annual mean biomass was 129.61 g/m 2. The mean values of richness index (D), evenness index (J') and Shannon-Wiener diversity index (H') of 12 samplings were 1.81 ± 1.38、0.50 ± 0.27 and 1.60 ± 1.13, respectively. The results showed a range of environmental quality from clean to severe pollution, in which only P01 section indicated clean environmental quality in autumn and winter. Cluster and nMDS results revealed that low community similarity were observed among P01 section and P02 together with P03 sections, potentially due to the geographical distribution factors. Additionally, the P02 section and P03 section gathered crosswise with higher community similarity. Our results suggested the combination of environmental factors with physical and chemical sediment factors were significantly correlated with the distribution characteristics of communities. Also to note, water salinity and pH can help explain the biodiversity distribution pattern of the microbenthic community in the Pearl River Estuary.

Key words: Pearl River Estuary, macrobenthos, community structure

Fig. 1

The sampling station of macrobenthos in the Pearl River Estuary. The left figure is an imitation from Huang et al, 2002."

Table 1

The environmental factors in different transections of Pearl River Estuary"

P01 P02 P03
高潮区
High tide
中潮区
Middle tide
低潮区
Low tide
高潮区
High tide
中潮区
Middle tide
低潮区
Low tide
高潮区
High tide
中潮区
Middle tide
低潮区
Low tide
粘土 Clay (%) 2.15 2.79 4.01 1.27 4.85 8.61 1.26 4.25 0.28
粉砂 Silt (%) 18.06 21.65 28.47 15.51 50.95 76.36 18.73 48.59 3.13
极细砂 Sand (%) 79.79 75.56 67.52 83.22 44.20 15.03 80.01 47.16 96.59
总氮 TN (%) 0.23 0.04 0.02 0.03 0.05 0.05
总有机碳 TOC (%) 1.83 0.37 0.22 0.21 0.60 0.70
温度 Temperature (℃) 24.23 24.50 23.87
盐度 Salinity (‰) 10.13 10.43 9.47
pH值 8.07 7.71 7.78

Table 2

The dominant species and their dominant values (Y) of four seasons in Pearl River Estuary"

种类 Species 春季 Spring 夏季 Summer 秋季 Autumn 冬季 Winter
环节动物 Annelida
羽须鳃沙蚕 Dendroneris pinnaticirrus - - - 0.022
软体动物 Mollusca
光滑河篮蛤 Potamocorbula laevis 0.512 0.143 0.326 0.603
中国绿螂 Glaucomya chinensis 0.067 0.128 0.020 0.031
焦河篮蛤 Potamocorbula ustulata - - - 0.020

Fig. 2

Spatial and temporal variation of macrobenthic density (mean + standard deviation) in Pearl River Estuary"

Fig. 3

Spatial and temporal variation of the biomass (mean + standard deviation) of macrobenthos"

Table 3

Biodiversity indices of macrobenthic communities in four seasons in Pearl River Estuary"

站次
Samplings
物种数
Species
number
密度
Density
(ind./m2)
生物量
Biomass
(g/m2)
丰富度指数
Richness
index (D)
均匀度指数
Evenness
index (J')
Shannon-Wiener多样性指数
Shannon-Wiener diversity index (H')
P01
秋季 Autumn 19 183.1 89.47 3.92 0.80 3.39
冬季 Winter 14 113.8 45.69 3.18 0.81 3.09
春季 Spring 17 193.8 78.05 3.41 0.64 2.60
夏季 Summer 10 188.4 79.04 1.95 0.62 2.06
P02
秋季 Autumn 19 515.6 236.83 3.17 0.31 1.30
冬季 Winter 4 190.2 53.15 0.64 0.21 0.42
春季 Spring 4 391.1 100.12 0.56 0.54 1.08
夏季 Summer 4 236.4 63.18 0.61 0.51 1.02
P03
秋季 Autumn 7 446.2 222.87 0.92 0.40 1.03
冬季 Winter 4 469.3 323.93 0.54 0.22 0.45
春季 Spring 2 279.1 254.66 0.20 0.06 0.06
夏季 Summer 8 24.9 8.27 2.65 0.90 2.69
平均值 ± 标准差 Mean ± SD 9.3 ± 6.3 269.3 ± 153.1 129.61 ± 101.49 1.81 ± 1.38 0.50 ± 0.27 1.60 ± 1.13

Table 4

Pearson correlation between species biodiversity indices and environmental factors"

物种数
Species number
密度
Density
生物量
Biomass
丰富度指数
Richness index (D)
均匀度指数
Evenness index (J')
Shannon-Wiener多样性指数
Shannon-Wiener index (H')
总有机碳 Total organic carbon (%) 0.703 0.233 0.486 0.716 0.447 0.682
总氮 Total nitrogen (%) 0.757 0.285 0.440 0.803 0.352 0.720
粘土 Clay (%) -0.247 0.215 0.496 -0.053 -0.459 -0.104
粉砂 Silt (%) -0.502 0.207 0.494 -0.317 -0.482 -0.369
极细砂 Sand (%) 0.483 -0.208 -0.496 0.296 0.482 0.347
温度 Temperature (℃) 0.080 0.504 -0.053 0.119 0.305 0.185
盐度 Salinity (‰) 0.623* 0.483 -0.051 0.577* 0.163 0.366
pH 0.958** -0.179 0.015 0.272 0.023 0.144

Fig. 4

Cluster analysis of macrobenthic community in four seasons in Pearl River Estuary"

Fig. 5

nMDS analysis of macrobenthic community in four seasons in Pearl River Estuary"

Table 5

Historical and current status of the species number, density and biomass of macrobenthos in Pearl River Estuary"

调查年份
Investigation year
物种数
Species number
春季密度
Density in spring
(ind./m2)
夏季密度
Density in summer
(ind./m2)
春季生物量
Biomass in spring
(g/m2)
夏季生物量
Biomass in summer
(g/m2)
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1999-2000 32 591.7 - 26.70 - Huang et al, 2002
2004 223 2,011.0 859.3 439.69 189.06 Mao et al, 2011
2005 240 183.0 138.5 127.17 25.36 Mao et al, 2011
2006 209 94.0 28.5 31.14 13.53 Mao et al, 2011
2008 293 251.7 215.0 27.15 38.91 Mao et al, 2011
2006 245 - 205.3 - 14.31 Zhang, 2014
2009 40 ** ** ** ** Huang et al, 2011
2015 67 215.0 212.0 11.79 3.32 Peng et al, 2019
2015 52 288.0 149.9 144.28 50.16 本研究 This study
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