基于稳定同位素方法的吕泗渔场近岸海域主要生物潜在碳源及营养级分析

高世科; 孙文; 张硕

doi:10.12284/hyxb2021066

基于稳定同位素方法的吕泗渔场近岸海域主要生物潜在碳源及营养级分析

doi: 10.12284/hyxb2021066

高世科^1,,
孙文¹,
张硕^{1, 2, ,}

1.
上海海洋大学海洋科学学院，上海 201306
2.
长江口水生生物资源监测与保护联合实验室，上海 201306

基金项目: 江苏海州湾国家海洋牧场示范项目（D-8005-18-0188）

详细信息

作者简介:
高世科（1994—），男，福建省福鼎市人，博士研究生，主要研究方向为近海生态连通性。E-mail：Gshike@163.com

通讯作者:
张硕（1976—），男，博士，教授，主要研究方向为近海生态环境修复。E-mail: s-zhang@shou.edu.cn

中图分类号: P714⁺.4
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- 被引次数: 0
出版历程
- 收稿日期: 2020-12-25
- 修回日期: 2021-01-25
- 网络出版日期: 2021-05-10
- 刊出日期: 2021-06-30

The potential carbon source and trophic level analysis of main organisms in coastal water of Lüsi fishing ground, based on carbon and nitrogen stable isotope analysis

Gao Shike^1
,,
Sun Wen¹,
Zhang Shuo^{1, 2
, ,}

1.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
2.
Joint Laboratory for Monitoring and Conservation of Aquatic Living Resources in the Yangtze River Estuary, Shanghai 201306, China

摘要

摘要: 基于稳定同位素方法，对2018年吕泗渔场近岸海域夏季主要生物种类的潜在碳源及其营养级进行分析，利用IsoSource模型计算该海域消费者的3大碳源（浮游植物、悬浮颗粒有机物、底质有机物）贡献值，并比较叠加潜在碳源影响前后主要生物种类的营养级变化。结果表明，浮游植物和底质有机物对37种主要生物种类的贡献比例分别为58.7%和28.2%，而悬浮颗粒有机物的贡献较小。因此判定吕泗渔场近岸海域夏季主要生物种类的潜在碳源主要是浮游植物和底质有机物。通过分别叠加3大潜在碳源和单一物种作为基准值构建两个营养级谱，右营养级谱的生物种类营养级范围为1.74～3.92，比左营养级谱平均下降0.19个营养级，尽管两个营养级谱的整体趋势走向不变，但部分鱼类和多数虾类的营养位置发生改变。右营养级谱的基准值随着潜在碳源叠加比例的不同而变化，能有效反映生物营养级，更适用于低营养级的虾蟹类。但对于处于中高级消费者位置的鱼类来说，这种叠加的效果影响不大。
- 稳定同位素 /
- 吕泗渔场 /
- 主要生物 /
- 潜在碳源 /
- 营养级分析
Abstract: Trophic level among main organisms in costal water of Lüsi fishing ground in summer, 2018, were analyzed in this study by stable isotope method. Using IsoSource model, we calculated potential carbon source contribution of the phytoplankton, POM and SOM of consumers, and then compared the former and latter TLs variation of main organisms by overlapping potential carbon source influence. Results showed that phytoplankton and SOM were main potential carbon source of main organisms in costal water of Lüsi fishing ground in summer. Two trophic level spectrums were constructed by overlapping three potential carbon sources and a single species as the baseline organisms, respectively. The trophic level of the right trophic level spectrum ranged from 1.74 to 3.92, which was averagely 0.19 lower than that of the left trophic level spectrum. Although the overall trend was unchanged, the trophic positions of some fish and most shrimps were changed in two spectrums. The baseline organisms in the right trophic level spectrum changed with the different stacking ratio of potential carbon sources, which could reflect the trophic level more effectively and was more suitable for organisms at low trophic levels, such as shrimp and crabs. However, this had little impact on fish in the position of middle and advanced consumers.
- stable isotope /
- Lüsi fishing ground /
- main organisms /
- potential carbon contribution /
- trophic level analysis

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图 1 研究区域

Fig. 1 Study area

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图 2 吕泗渔场近岸海域主要生物δ¹³C−δ¹⁵N（平均值±标准差）的二维分布

Fig. 2 Two-dimensional distribution of δ¹³C−δ¹⁵N (mean±SD) of main biological species in coastal water of Lüsi fishing ground

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图 3 基于IsoSource模型计算主要生物的潜在碳源贡献均值和范围

Fig. 3 The mean and range of contribution of potential carbon sources to the main creatures calculated based on IsoSource model

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图 4 吕泗渔场近岸海域L-TLS（左营养级谱）和R-TLS（右营养级谱）的物种营养级比较

被框选物种在两个营养级的营养位置不同

Fig. 4 Comparison of trophic levels of species plotted by L-TLS (left trephic level spectrums) and R-TLS (right trephic level spectrums) in coastal waters of Lüsi fishing ground

The trophic position of the framed species differed between the two trophic level spectrums

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图 5 小黄鱼体长与营养级的关系

Fig. 5 The relationship between body length and trophic level value for Larimichthys polyactis

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表 1 吕泗渔场近岸海域生物种类、数量、体长范围和δ¹³C值、δ¹⁵N值

Tab. 1 The species number, body length range and δ¹³C, δ¹⁵N value of the samples collected in coastal water of Lüsi fishing ground

	种类	体长范围/mm	数量	δ¹³C值/‰(平均值±标准差)	δ¹⁵N值/‰(平均值±标准差)
鱼类	小黄鱼 Larimichthys polyactis	54～137	9	−17.72±0.68	8.95±0.6
	棘头梅童鱼 Collichthys lucidus	100～112	4	−17.4±1.11	10.79±0.58
	刀鲚 Coilia macrognathos	175～305	6	−17.49±0.9	12.09±0.73
	凤鲚 Coilia mystus	110～180	4	−17.93±1.08	11.71±1.01
	黄鲫 Setipinna taty	125～170	4	−16.44±0.31	12.68±0.12
	鳓鱼 Ilisha elongata	136～160	3	−15.87±0.03	11.2±0.2
	带鱼 Trichiurus japonicus	359～625	2	−15.88±0.49	13.15±0.17
	龙头鱼 Harpadon nehereus	195～201	3	−16.06±0.27	11.25±0.72
	银鲳 Pampus argenteus	104～131	3	−15.82±0.1	12.2±0.48
	海鳗 Muraenesox cinereus	478～588	3	−15.68±0.13	12.49±0.34
	鮸鱼 Miichthys miiuy	234～320	5	−16.17±0.11	12.29±0.37
	焦氏舌鳎 Cynoglossus joyneri	142～200	2	−16.2±0.31	11.75±0.03
	褐牙鲆 Paralichthys olivaceus	85	3	−17.25±0.54	9.75±1.3
	多鳞鱚 Sillago sihama	176～179	2	−17.69±0.41	14.13±0.13
	赤鼻棱鳀 Thryssa kammalensis	85～101	4	−19±0.71	13.43±0.69
	鲻鱼 Mugil cephalus	139～149	2	−16.64±0.32	9.47±0.55
	皮氏叫姑鱼 Johnius belangerii	87～111	2	−17.87±0.13	11.5±1.49
	中国花鲈 Lateolabrax maculatus	170	1	−16.22±0	13.13±0
	褐菖鲉 Sebastiscus marmoratus	122～148	3	−17.4±0.11	13.79±0.16
	斑鰶 Konosirus punctatus	160～194	3	−20.49±0.34	10.89±1.04
	中华小沙丁鱼 Sardinella nymphaea	99～103	2	−18.92±0.16	13.25±0.1
	黑鲷 Acanthopagrus schlegelii	164～169	2	−20.36±2.58	13.6±0.13
	大黄鱼 Larimichthys crocea	171	1	−16.07±0	12.45±0
头足动物	火枪乌贼 Loligo beka	126～194	3	−15.79±0.17	12.25±0.73
甲壳动物	三疣梭子蟹 Portunus trituberculatus	90～172	4	−15.29±0.42	11.72±0.44
	日本蟳 Charybdis japonica	61～70	3	−15.62±0.49	10.04±1.96
	细巧仿对虾 Parapenaeopsis tenella	49～52	3	−16.74±0.43	10.04±0.23
	日本囊对虾 Marsupenaeus japonicus	106～112	2	−13.92±0.33	9.84±0.33
	安氏白虾 Exopalaemon annandalei	75～82	3	−19.23±0.32	10.64±0.43
	哈氏仿对虾 Parapenaeopsis hardwickii	84～110	5	−15.67±0.18	10.03±0.6
	刀额新对虾 Metapenaeus ensi	74～80	4	−16.37±0.54	10.22±1.02
	口虾蛄 Oratosquilla oratoria	125～180	3	−15.99±0.19	11.21±0.8
	葛氏长臂虾 Palaemon gravieri	60～68	3	−15.81±0.19	10.72±0.57
	周氏新对虾 Metapenaeus joyneri	90～120	5	−16.64±0.55	10.11±0.18
	细螯虾 Leptochela gracilis	70～75	2	−15.96±0.22	10.66±0.15
软体动物	毛蚶 Scapharca subcrenata	25～29	2	−17.83±0	8.94±1.71
浮游动物	浮游动物		1	−21.45±0	6.73±0
潜在碳源	浮游植物		11	−24.27±0.92	4.3±1.53
	悬浮颗粒有机物		12	−23.41±0.75	3.58±0.42
	底质有机物		11	−20.24±0.89	3.58±1.52

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表 2 潜在碳源δ¹³C和δ¹⁵N的值

Tab. 2 Values of δ¹³C and δ¹⁵N for the potential carbon sources

分类	数量	δ¹³C值/‰	δ¹⁵N值/‰
浮游植物	11	−24.27±0.92	4.3±1.53
POM	12	−23.41±0.75	3.58±0.42
SOM	11	−20.24±0.89	3.58±1.52

下载: 导出CSV

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