Distinguishing nutrient-depleting effects of scallop farming from natural variabilities in an offshore sea ranch
Liang, Yi1,2,3; Zhao, Zengxia1,2,3; Zhang, Guangtao1,2,3,4; Wang, Shiwei1,2,3; Wan, Aiyong1,2,3; Liu, Qun1,2,3
2020-03-15
发表期刊AQUACULTURE
ISSN0044-8486
卷号518页码:9
通讯作者Zhang, Guangtao(gtzhang@qdio.ac.cn)
摘要While bivalve farming is well recognized in terms of modifying the biogeochemical cycle through filter-feeding and biodeposition, its impacts on water column nutrient concentrations in various ecosystems may vary from depletion to addition. Hypothesizing that the variability arises from overlap of farming-associated impacts and pelagic processes, nutrient concentrations and phytoplankton biomass were investigated monthly in an offshore sea ranch, to detect the real impacts of bottom-seeding scallop farming. Nutrient concentrations in water column average increased from July to December following successive surface freshening and disappearance of thermal stratification. Abrupt decrease was observed in March, along with increase in chlorophyll a concentration. The silicate concentration decreased below 2 mu M in all depth layers in the mariculture area in March and April, whereas silicate limitation in open waters was commonly observed in April. Compared to open waters, inorganic nitrogen and phosphate concentrations were significantly lower in the mariculture area on an annual cycle, whereas silicate concentration was lower in spring and higher in summer. Our results indicate that scallop farming in frequently refreshed waters can act as nutrient sink through top-down effects. Without exogenous supply, it can also introduce the limitation of nutrient (silicate) with low regeneration rate and stimulate shift in the phytoplankton community structure.
关键词Patinopecten yessoensis Top-down control Ecological consequences Eutrophication Silicate limitation
DOI10.1016/j.aquaculture.2019.734844
收录类别SCI
语种英语
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050401] ; National Key Research and Development Program of China[2017YFE0111100] ; Science and Technology Service Network Initiative of the Chinese Academy of Sciences[Y82346101L]
WOS研究方向Fisheries ; Marine & Freshwater Biology
WOS类目Fisheries ; Marine & Freshwater Biology
WOS记录号WOS:000510424900056
出版者ELSEVIER
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/165347
专题胶州湾海洋生态系统国家野外研究站
通讯作者Zhang, Guangtao
作者单位1.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Marine Ecosyst Res Stn, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位中国科学院海洋研究所;  中国科学院海洋大科学研究中心
通讯作者单位中国科学院海洋研究所;  中国科学院海洋大科学研究中心
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GB/T 7714
Liang, Yi,Zhao, Zengxia,Zhang, Guangtao,et al. Distinguishing nutrient-depleting effects of scallop farming from natural variabilities in an offshore sea ranch[J]. AQUACULTURE,2020,518:9.
APA Liang, Yi,Zhao, Zengxia,Zhang, Guangtao,Wang, Shiwei,Wan, Aiyong,&Liu, Qun.(2020).Distinguishing nutrient-depleting effects of scallop farming from natural variabilities in an offshore sea ranch.AQUACULTURE,518,9.
MLA Liang, Yi,et al."Distinguishing nutrient-depleting effects of scallop farming from natural variabilities in an offshore sea ranch".AQUACULTURE 518(2020):9.
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