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Seasonal variations of dissolved Mn concentration in the surface water of the Changjiang River Estuary and its adjacent area
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Dongxuan Zhou1, Yuncong Ge1, Ziyuan Jiang1, Yaqing Ruan1, Fang Cao2, Shouye Yang3, Ruifeng Zhang1, 4, *
Haiyang Xuebao | 2024, 46(1) : 111 - 120
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Haiyang Xuebao | 2024, 46(1): 111-120
Seasonal variations of dissolved Mn concentration in the surface water of the Changjiang River Estuary and its adjacent area
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Dongxuan Zhou1, Yuncong Ge1, Ziyuan Jiang1, Yaqing Ruan1, Fang Cao2, Shouye Yang3, Ruifeng Zhang1, 4, *
Affiliations
  • 1. School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China
  • 2. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
  • 3. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
  • 4. Key Laboratory of Polar Science, Ministry of Natural Resources, Polar Research Institute of China, Shanghai 200136, China
Published: 2024-01-31 doi: 10.12284/hyxb2024006
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Manganese (Mn) is an essential trace element for the marine ecosystem. As the transitional zone between rivers and oceans, estuaries have a significant effect on dissolved Mn and its terrigenous input. In this study, the distribution of dissolved Mn, investigated in the surface water of Changjiang River Estuary and its adjacent area during September 2019 (autumn), March 2021 (spring) and July 2021 (summer), was analyzed by automatic solid phase extraction and inductively coupled plasma mass spectrometry. The results indicated that the average concentration and estuarine behaviors of dissolved Mn showed seasonal variations between the three cruises: the maximum average concentration occurred in summer and dissolved Mn was removed firstly and then added with the increase of salinity; the medium average concentration occurred in autumn and dissolved Mn was mainly removed with the increase of salinity; the minimum average concentration occurred in spring and dissloved Mn was mainly conservative with the increase of salinity. The results of significance test indicated that only in the season when the fresh water had high concentrations, dissloved Mn carried by the Changjiang River had significant influence on the distribution of dissolved Mn in the Changjiang River Estuary and its adjacent area; the distribution of dissolved Mn was co-dominated by a variety of biogeochemical processes in the season when the concentrations were low in the fresh water. The high suspended particulate matter concentrations were the important factor of the removal of dissolved Mn in the Changjiang Estuary’s water with medium-low salinity. And the addition mechanism of dissolved Mn in water with high salinity needs further vestigation.

the Changjiang River Estuary and its adjacent area  /  dissolved Mn  /  seasonal distribution  /  estuarine behavior  /  suspended particulate matter
Dongxuan Zhou, Yuncong Ge, Ziyuan Jiang, Yaqing Ruan, Fang Cao, Shouye Yang, Ruifeng Zhang. Seasonal variations of dissolved Mn concentration in the surface water of the Changjiang River Estuary and its adjacent area[J]. Haiyang Xuebao, 2024 , 46 (1) : 111 -120 . DOI: 10.12284/hyxb2024006
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Article Info
doi: 10.12284/hyxb2024006
  • Receive Date：2023-07-26
  • Online Date：2025-11-25
  • Published：2024-01-31
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History
  • Received：2023-07-26
  • Revised：2023-09-12
Funding
Affiliations
    1. School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China
    2. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
    3. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
    4. Key Laboratory of Polar Science, Ministry of Natural Resources, Polar Research Institute of China, Shanghai 200136, 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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