Uncovering nutrient regeneration, transformation pattern, and its contribution to harmful algal blooms in mariculture waters

doi:10.1016/j.scitotenv.2024.170652

	Uncovering nutrient regeneration, transformation pattern, and its contribution to harmful algal blooms in mariculture waters
	Chi, Lianbao 1,2; Jiang, Kaiqin 1,2,4; Ding, Yu 3; Wang, Wentao1,2 ; Song, Xiuxian1,2,4 ; Yu, Zhiming1,2,4
	2024-04-01
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	919 页码:9
通讯作者	Song, Xiuxian(songxx@qdio.ac.cn)
摘要	The prevalence of harmful algal blooms (HABs), especially in mariculture waters, has become a concern for environmental and human health worldwide. Notably, the frequent occurrence of HABs relies upon a substantial supply of available nutrients, which are influenced by nutrient recycling. However, nutrient regeneration, transformation pattern, and their contribution to HABs in mariculture waters remain largely unknown. In this study, by combining field investigation and incubation experiments from June to September 2020, the temporal variations in nutrients and algal composition were revealed. In addition, the nutrient regeneration and assimilation rates in the water column during two continuous algal blooms were measured. The results indicated that organic nutrients, which were the dominant components, strongly stimulated nutrient regeneration. High regeneration rates were observed, with dissolved inorganic nitrogen (DIN) and phosphorous (DIP) regeneration rates ranging from 0.25 to 2.64 mu mol/L & sdot;h and 0.01 to 0.09 mu mol/L & sdot;h, respectively. Compared to the direct uptake of organic nutrients, the rapid regeneration of inorganic nutrients played a vital role in sustaining continuous algal blooms, as regenerated DIN contributed 100 % while regenerated DIP contributed 72-100 % of the algal assimilation demand. Furthermore, the redundancy analysis and inverse solution equations indicated that different N transformation patterns and utilization strategies occurred during Heterosigma and Nannochloris blooms. The shorter N recycling pathway and faster NH4+ supply rates provided favorable conditions for the dominance of Nannochloris over Heterosigma, which had a preference for the uptake of NO3 . In conclusion, we propose that nutrient regeneration is a key maintenance mechanism underlying the maintenance of continuous algal blooms, and different N transformation patterns and utilization strategies regulate algal communities in mariculture waters.
关键词	Eutrophic waters Mariculture Nutrient recycling Harmful algal blooms Algal communities
DOI	10.1016/j.scitotenv.2024.170652
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42276220] ; National Natural Science Foundation of China[42376210] ; Intergovern- mental Innovation Cooperation Project of the Chinese Ministry of Sci- ence and Technology[2022YFE0136400]
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001188347600001
出版者	ELSEVIER
WOS关键词	RIVER-ESTUARY ; LAKE TAIHU ; PLANKTON COMMUNITY ; AMMONIUM ; EUTROPHICATION ; PHYTOPLANKTON ; DYNAMICS ; NITRIFICATION ; NITROGEN ; PATHWAY
引用统计	被引频次：1[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/337002/184945
专题	海洋生态与环境科学重点实验室
通讯作者	Song, Xiuxian
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 3.Weihai Vocat Coll, Weihai 264200, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Chi, Lianbao,Jiang, Kaiqin,Ding, Yu,et al. Uncovering nutrient regeneration, transformation pattern, and its contribution to harmful algal blooms in mariculture waters[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,919:9.
APA	Chi, Lianbao,Jiang, Kaiqin,Ding, Yu,Wang, Wentao,Song, Xiuxian,&Yu, Zhiming.(2024).Uncovering nutrient regeneration, transformation pattern, and its contribution to harmful algal blooms in mariculture waters.SCIENCE OF THE TOTAL ENVIRONMENT,919,9.
MLA	Chi, Lianbao,et al."Uncovering nutrient regeneration, transformation pattern, and its contribution to harmful algal blooms in mariculture waters".SCIENCE OF THE TOTAL ENVIRONMENT 919(2024):9.