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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
Source PublicationAQUACULTURE
ISSN0044-8486
Volume518Pages:9
Corresponding AuthorZhang, Guangtao(gtzhang@qdio.ac.cn)
AbstractWhile 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.
KeywordPatinopecten yessoensis Top-down control Ecological consequences Eutrophication Silicate limitation
DOI10.1016/j.aquaculture.2019.734844
Indexed BySCI
Language英语
Funding ProjectStrategic 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 Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS IDWOS:000510424900056
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/165347
Collection胶州湾海洋生态系统国家野外研究站
Corresponding AuthorZhang, Guangtao
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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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