Biodiversity Science ›› 2019, Vol. 27 ›› Issue (9): 984-992.doi: 10.17520/biods.2019270

• Original Papers • Previous Article     Next Article

Food web characteristics of seagrass beds in intertidal of Dongying and Yantai, Shandong Province

Bo Song1, 2, Linlin Chen2, Lang Yan2, Shaoyu Jiang2, Chunyun Liu2, Bingjun Li1, *, Baoquan Li2, *   

  1. 1 School of Ocean, Yantai University, Yantai, Shandong 264003
    2 Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003
  • Received:2019-09-01 Accepted:2019-09-25 Online:2019-09-25
  • Li Bingjun,Li Baoquan

To understand the nutritional relationship among benthic organisms and the food web characteristics in seagrass beds, we collected macrobenthic organisms in intertidal zones of the Yellow River Delta of Dongying and the west coast of Yantai in August 2018. We used δ 13C and δ 15N stable isotopes determine trophic position. The range of organisms isotopic values in the Dongying seagrass bed were -21.99‰ to -12.13‰ for δ 13C and 5.23‰ to 11.05‰ for δ 15N; and -18.11‰ to -14.06‰ (δ 13C) and 6.60‰ to 10.22‰ (δ 15N) in the Yantai seagrass bed. In the Dongying seagrass bed, the trophic level of main organisms ranged from 2.00 to 3.85, while in the Yantai seagrass bed the trophic range was from 2.00 to 3.15. According to δ 15N value calculations, we found that the primary consumers in these two area’s seagrass bed were filter feeding bivalves and polychaetes; the secondary consumers were plant-eating or omnivorous crustaceans, carnivorous fish and gastropods. Compared to offshore habitats, the average trophic position of macrobenthic organisms in seagrass beds was relatively low.

Key words: stable isotope, seagrass bed, food web, trophic level, macrobenthos

Fig. 1

Sampling sites of intertidal seagrass beds in Dongying and Yantai"

Table 1

δ13C and δ15N values of major organisms collected within Dongying and Yantai seagrass beds"

物种 Species 样本数 Samples δ13C(‰) (Mean ± SD) δ15N(‰) (Mean ± SD)
东营 Dongying
腹足类 Gastropods
托氏昌螺 Umbonium thomasi 67 -14.13 ± 0.10 8.66 ± 0.09
微黄镰玉螺 Euspira gilva 2 -15.54 ± 0.28 8.77 ± 0.02
古氏滩栖螺 Batillaria cumingi 43 -12.85 ± 0.39 7.42 ± 0.25
甲壳类 Crustacea
日本大眼蟹 Macrophthalmus japonicus 4 -14.18 ± 0.14 6.49 ± 0.33
葛氏长臂虾 Palaemon gravieri 5 -12.13 ± 0.12 7.88 ± 0.18
双壳类 Bivalve
青蛤 Cyclina sinensis 8 -20.18 ± 0.08 5.23 ± 0.23
四角蛤蜊 Mactra quadrangularis 8 -19.90 ± 0.32 6.50 ± 0.06
鱼类 Fish
日本海马 Hippocampus mohnikei 2 -21.99 ± 0.52 9.87 ± 0.30
鲻鱼 Mugil cephalus 3 -16.08 ± 0.62 9.46 ± 0.24
矛尾刺虾虎鱼 Chaeturichthys stigmatias 3 -17.59 ± 0.09 11.05 ± 0.15
烟台 Yantai
腹足类 Gastropods
宽带薄梯螺 Epitonium latifasciatum 8 -14.62 ± 0.22 7.76 ± 0.14
扁玉螺 Glossaulax didyma 2 -17.41 ± 0.09 8.19 ± 0.77
古氏滩栖螺 Batillaria cumingi 26 -14.57 ± 0.29 8.00 ± 0.09
甲壳类 Crustacea
绒毛近方蟹 Hemigrapsus penicillatus 3 -14.75 ± 0.07 10.22 ± 0.13
日本大眼蟹 Macrophthalmus japonicus 3 -14.06 ± 0.16 10.03 ± 0.25
双壳类 Bivalve
菲律宾蛤仔 Ruditapes philippinarum 19 -18.11 ± 0.09 7.11 ± 0.64
异白樱蛤 Macoma incongrua 16 -14.64 ± 0.13 6.60 ± 0.31
多毛类 Polychaeta
日本刺沙蚕 Hediste japonica 6 -17.35 ± 0.21 7.66 ± 0.22
红色叶蛰虫 Amphitrite rubra 8 -16.62 ± 0.04 8.94 ± 0.29

Fig. 2

Trophic level of organisms in seagrass beds in Dongying (a) and Yantai (b)"

Fig. 3

Cluster analysis of δ13C and δ15N values of major organisms in Dongying (a) and Yantai (b) seagrass beds"

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