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Regulation of the colloidal organic matter in coastal waters by scallop farming

文献类型：期刊论文

作者Wang, Bin1,2,3; Gao, Xuelu1,2,3,4; Wang, Liming5; Yu, Xiaoxiao5; Liu, Yongliang1,3,4,6; Sun, Xiyan1,3,4,6; Zhao, Jianmin1,2,4; Xing, Qianguo1,2,4; Yang, Yuwei1,2
刊名MARINE ENVIRONMENTAL RESEARCH
出版日期2025-03-01
卷号205页码:15
关键词Bay scallop cultivation Coastal hypoxia Microbial carbon pump Size-reactivity continuum Colloidal organic matter Spectral characteristics
ISSN号0141-1136
DOI10.1016/j.marenvres.2025.106998
通讯作者Gao, Xuelu(xlgao@yic.ac.cn)
英文摘要To investigate the influence of scallop farming on the biogeochemical characteristics of colloidal organic matter (COM, 1 kDa-0.7 mu m), surface and bottom seawater samples collected from a bay scallop mariculture area (MA) and its adjacent waters were size-fractionated and analyzed for absorption and fluorescence characteristics. Compared to inshore shallow water area and non-mariculture area (NMA), COM in MA exhibited the highest proportion of a350 in bulk dissolved organic matter, while the contribution of its 100 kDa-0.7 mu m high molecular weight fraction (HCOM) was the lowest. Protein-like components, including tryptophan-like C1 and tyrosine-like C2, predominated in the fluorescent substances of HCOM; while humic-like components, including microbial humic-like C3 and terrestrial humic-like C4, dominated in the fluorescent substances of 1-3 kDa low molecular weight fraction of COM (LCOM). COM transformation was influenced by scallop farming via selective filter- feeding and enhanced degradation of microorganisms. Compared with NMA, phytoplankton production mainly affected the a350 and protein-like substances of HCOM in the surface seawater of MA, and its contributions increased by 2.4% (a350), 5.6% (C1), and 1.8% (C2) respectively. Meanwhile, microbial degradation significantly influenced component C1 of HCOM in the bottom seawater of MA, reducing its contribution by 33.2%; its impact on the contributions of humic-like fluorescent substances of LCOM were decreased by 2.7% for C3 and 1.1% for C4. These variations suggest that scallop farming promotes the production and transformation of protein-like substances in HCOM (mainly C1), potentially leading to an accumulation of humic-like substances in LCOM due to altered microbial degradation dynamics. Photodegradation, particulate organic matter settling, sediment release and colloidal aggregation/disaggregation also influence the transformation of size-fractionated COM.
WOS关键词PARALLEL FACTOR-ANALYSIS ; MOLECULAR-WEIGHT ; CARBON ; FLUORESCENCE ; SIZE ; DYNAMICS ; MARINE ; SEA ; ENVIRONMENTS ; NUTRIENTS
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology
语种英语
WOS记录号WOS:001427695500001
资助机构Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/40370]  
专题海岸带生物学与生物资源利用重点实验室
烟台海岸带研究所_海岸带信息集成与综合管理实验室
中国科学院牟平海岸带环境综合试验站
海岸带生物资源高效利用研究与发展中心
通讯作者Gao, Xuelu
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Zone Environm Proc & Ecol Reme, Yantai 264003, Shandong, Peoples R China
2.Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
5.Shandong Marine Resource & Environm Res Inst, Shandong Key Lab Marine Ecol Restorat, Yantai 264006, Shandong, Peoples R China
6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Muping Coastal Environm Res Stn, Yantai 264003, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Bin,Gao, Xuelu,Wang, Liming,et al. Regulation of the colloidal organic matter in coastal waters by scallop farming[J]. MARINE ENVIRONMENTAL RESEARCH,2025,205:15.
APA Wang, Bin.,Gao, Xuelu.,Wang, Liming.,Yu, Xiaoxiao.,Liu, Yongliang.,...&Yang, Yuwei.(2025).Regulation of the colloidal organic matter in coastal waters by scallop farming.MARINE ENVIRONMENTAL RESEARCH,205,15.
MLA Wang, Bin,et al."Regulation of the colloidal organic matter in coastal waters by scallop farming".MARINE ENVIRONMENTAL RESEARCH 205(2025):15.

入库方式： OAI收割

来源：烟台海岸带研究所

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