Characteristics of a macrozoobenthic community in the sea adjacent to the Yangtze River estuary during the wet season

doi:10.17520/biods.2016039

Abstract

Abstract:

To explore the characteristics of a macrozoobenthic community in the sea adjacent to the Yangtze River estuary during the wet season, macrozoobenthic samples were collected during June, August, and October, 2012, and data were analyzed using statistical methods including Two-Way ANOVA, Cluster analysis, Non-metric Multidimensional Scaling (NMDS), and Abundance-Biomass Comparison Curves (ABC Curves). A total of 181 macrozoobenthic species were recorded, with 82 species of Polychaeta, 46 Crustacea, 31 Mollusca, 11 Echinodermata and 11 species belonging to other groups. The abundance, biomass, Margalef’s richness index (d), Shannon-Wiener index (H'), and Pielou index (J') did not show any significant temporal or spatial differences except that J' in the offshore area was significantly higher than that found in the inshore area. Three to four macrozoobenthic assemblages were identified using the 20% similarity level and a low similarity level among stations was also observed. ABC curves revealed that the macrozoobenthic community in the offshore area was less disturbed than that in the inshore area. As a result of the continuous impact of anthropogenic activities, the macrozoobenthic community was severely disturbed and unevenly distributed in the sea adjacent to the Yangtze River estuary.

Key words: macrobenthos, diversity, assemblage, dominant species, Yangtze River estuary

Yong Xu, Xinzheng Li, Hongfa Wang, Baolin Zhang, Lianmei Shuai. Characteristics of a macrozoobenthic community in the sea adjacent to the Yangtze River estuary during the wet season[J]. Biodiv Sci, 2016, 24(7): 811-819.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2016039

https://www.biodiversity-science.net/EN/Y2016/V24/I7/811

Figures/Tables 10

References 19

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物种 Species	6月 June	8月 August	10月 October
寡鳃齿吻沙蚕 Nephtys oligobranchia	0.067	0.009	0.007
奇异稚齿虫 Paraprionospio pinnata	0.042	0.019	0.056
四齿欧努菲虫 Onuphis tetradentata	0.035	0.030	0.022
索沙蚕一种 Lumbrineris sp.	0.017	-	-
拟节虫一种 Praxillella sp.	0.013	-	0.007
多丝独毛虫 Tharyx multifilis	0.011	-	0.007
背蚓虫 Notomastus latericeus	0.009	0.012	0.022
锥唇吻沙蚕 Glycera onomichiensis	0.008	0.010	-
独指虫一种 Aricidea sp.	0.007	-	-
稚齿虫 Prionospio pygmaeus	0.007	-	-
日本倍棘蛇尾 Amphioplus japonicus	-	0.011	-
厚鳃虫 Dasybranchus caducus	-	0.010	-
豆形短眼蟹 Xenophthalmus pinnotheroides	-	0.009	-
长叶索沙蚕 Lumbrineris longifolia	-	0.008	0.036
拟特须虫 Paralacydonia paradoxa	-	0.007	-
梨体星虫一种 Apionsoma sp.	-	-	0.114
长吻沙蚕 Glycera chirori	-	-	0.015
岩虫 Marphysa sanguinea	-	-	0.007

物种 Species	6月 June	8月 August	10月 October
寡鳃齿吻沙蚕 Nephtys oligobranchia	0.067	0.009	0.007
奇异稚齿虫 Paraprionospio pinnata	0.042	0.019	0.056
四齿欧努菲虫 Onuphis tetradentata	0.035	0.030	0.022
索沙蚕一种 Lumbrineris sp.	0.017	-	-
拟节虫一种 Praxillella sp.	0.013	-	0.007
多丝独毛虫 Tharyx multifilis	0.011	-	0.007
背蚓虫 Notomastus latericeus	0.009	0.012	0.022
锥唇吻沙蚕 Glycera onomichiensis	0.008	0.010	-
独指虫一种 Aricidea sp.	0.007	-	-
稚齿虫 Prionospio pygmaeus	0.007	-	-
日本倍棘蛇尾 Amphioplus japonicus	-	0.011	-
厚鳃虫 Dasybranchus caducus	-	0.010	-
豆形短眼蟹 Xenophthalmus pinnotheroides	-	0.009	-
长叶索沙蚕 Lumbrineris longifolia	-	0.008	0.036
拟特须虫 Paralacydonia paradoxa	-	0.007	-
梨体星虫一种 Apionsoma sp.	-	-	0.114
长吻沙蚕 Glycera chirori	-	-	0.015
岩虫 Marphysa sanguinea	-	-	0.007

类群 Group	6月 June		8月 August		10月 October		平均 Average
	丰度 Abundance	生物量 Biomass	丰度 Abundance	生物量 Biomass	丰度 Abundance	生物量 Biomass	丰度 Abundance	生物量 Biomass
多毛类动物 Polychaeta	100.0	3.9	88.8	4.7	115.7	2.8	101.6	3.8
甲壳动物 Crustacea	13.8	0.9	22.5	5.6	24.6	0.9	20.3	2.5
软体动物 Mollusca	18.1	0.5	7.9	1.1	11.1	0.3	12.4	0.6
棘皮动物 Echinodermata	3.8	0.2	5.8	0.4	9.3	1.6	6.3	0.7
其他类群 Others	4.6	1.1	5.4	0.5	45.7	1.3	18.6	1.0
总计 Total	140.3	6.6	130.4	12.3	206.4	6.9	159.2	8.6

类群 Group	6月 June		8月 August		10月 October		平均 Average
	丰度 Abundance	生物量 Biomass	丰度 Abundance	生物量 Biomass	丰度 Abundance	生物量 Biomass	丰度 Abundance	生物量 Biomass
多毛类动物 Polychaeta	100.0	3.9	88.8	4.7	115.7	2.8	101.6	3.8
甲壳动物 Crustacea	13.8	0.9	22.5	5.6	24.6	0.9	20.3	2.5
软体动物 Mollusca	18.1	0.5	7.9	1.1	11.1	0.3	12.4	0.6
棘皮动物 Echinodermata	3.8	0.2	5.8	0.4	9.3	1.6	6.3	0.7
其他类群 Others	4.6	1.1	5.4	0.5	45.7	1.3	18.6	1.0
总计 Total	140.3	6.6	130.4	12.3	206.4	6.9	159.2	8.6

		最大值 Max.	最小值 Min.	平均值±标准误 Mean ± SE
d	6月 June	6.57	1.67	3.44 ± 0.42
	8月 August	5.52	1.24	3.60 ± 0.37
	10月 October	5.63	1.82	4.16 ± 0.31
H'	6月 June	4.33	1.79	2.94 ± 0.23
	8月 August	4.01	1.37	3.03 ± 0.22
	10月 October	4.15	1.59	3.29 ± 0.21
J'	6月 June	0.98	0.55	0.86 ± 0.03
	8月 August	1.00	0.72	0.90 ± 0.02
	10月 October	1.00	0.51	0.86 ± 0.03