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Preliminary study on the trophic relationship of dominant fishes in coral reefs of Weizhou Island in autumn
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Qian Peng1, 2, Qifang Wang2, Puqing Song2, Dingyong Huang2, Han Zhang2, Jianjia Wang2, Xinqing Zheng1, 2, 3, *
Haiyang Xuebao | 2023, 45(9) : 91 - 104
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Haiyang Xuebao | 2023, 45(9): 91-104
• Article •
Preliminary study on the trophic relationship of dominant fishes in coral reefs of Weizhou Island in autumn
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Qian Peng1, 2, Qifang Wang2, Puqing Song2, Dingyong Huang2, Han Zhang2, Jianjia Wang2, Xinqing Zheng1, 2, 3, *
Affiliations
  • 1College of Marine Science, Shanghai Ocean University, Shanghai 201306, China
  • 2Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Third Institute of Oceanography, Ministry of Natural Resources, Beihai 536007, China
  • 3Key Laboratory of Marine Ecological Conservation and Restoration, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
Published: 2023-09-30 doi: 10.12284/hyxb2023128
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Here, stable carbon and nitrogen isotope (δ13C and δ15N) techniques are used to estimate the trophic levels (TL) and main carbon sources of the dominant fish in the coral reefs of Weizhou Island in autumn. Combined with the six quantitative indicators of community trophic structure, the trophic relationship of the dominant fish in the coral reefs of Weizhou Island in autumn is preliminarily analyzed. The results show that the δ13C and δ15N values of different fishes are significantly different (p < 0.01). The δ13C values are between −18.3‰ and −15.4‰, and the δ15N values are between 12.9‰ and 16.3‰. The trophic levels of fish ranged from 2.5 to 3.4, with an average values of 3.0 ± 0.8, indicating that fish in Weizhou Island are mainly carnivorous. The organic carbon sources of fish in Weizhou Island are complex, but macroalgae and benthic microalgae are the key carbon sources fuelling fish food webs. The food source diversity level and trophic level length (CR and NR) of fish community are 2.35 and 3.09, respectively. The total area (TA), mean centrifugal distance (CD), mean nearest neighbor distance (MNND) and standard deviation of nearest neighbor distance (SDNND) are 4.48, 0.89, 0.40 and 0.29, respectively. These above indicators suggest that the trophic structure of coral reef fish community in Weizhou Island has a high degree of nutritional redundancy, but the food chain is short and the nutritional diversity is low. The coral reef ecosystem in Weizhou Island is incomplete in food web structure. In the future, it is necessary to carry out appropriate control and restoration measures to restore the structure and function of the coral reef ecosystem in Weizhou Island.

coral reef fish  /  trophic relationship  /  carbon and nitrogen stable isotope  /  Weizhou Island
Qian Peng, Qifang Wang, Puqing Song, Dingyong Huang, Han Zhang, Jianjia Wang, Xinqing Zheng. Preliminary study on the trophic relationship of dominant fishes in coral reefs of Weizhou Island in autumn[J]. Haiyang Xuebao, 2023 , 45 (9) : 91 -104 . DOI: 10.12284/hyxb2023128
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Article Info
doi: 10.12284/hyxb2023128
  • Receive Date：2023-02-13
  • Online Date：2025-12-28
  • Published：2023-09-30
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  • Received：2023-02-13
  • Revised：2023-05-04
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Affiliations
    1College of Marine Science, Shanghai Ocean University, Shanghai 201306, China
    2Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Third Institute of Oceanography, Ministry of Natural Resources, Beihai 536007, China
    3Key Laboratory of Marine Ecological Conservation and Restoration, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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