Seasonal dynamics of phytoplankton phosphorus stress in temperate Jiaozhou Bay, North China
文献类型：期刊论文
| 作者 | Zhang, Xia1,2; Zhang, Jingping1; Yuan, Huamao3; Shen, Yuan1; Zhou, Changhao1; Huang, Xiaoping1,2 |
| 刊名 | CONTINENTAL SHELF RESEARCH
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 231页码:9 |
| 关键词 | Alkaline phosphatase activity Enzyme kinetics Phytoplankton and bacteria Phosphate stress DOP |
| ISSN号 | 0278-4343 |
| DOI | 10.1016/j.csr.2021.104602 |
| 通讯作者 | Huang, Xiaoping(xphuang@scsio.ac.cn) |
| 英文摘要 | Alkaline phosphatase activity (APA) is always used to evaluate the phosphorus (P) status of phytoplankton community and considered as a proxy for phosphate (DIP) stress or deficiency. In this study, we presented seasonal distributions of APA [including free APA (F-APA) and particulate APA (P-APA)] and enzyme kinetics and compared to the distribution of phosphorus concentrations, planktonic biomass and other environmental variables reflecting community P status in moderate DIP-deficient Jiaozhou Bay, North China. Low potential APA (V-max) were detected in winter (mean 51.3 nM h(-1)), which was probably due to low water temperature, while higher APA corresponded well to high phosphate requirement and high biological productivity in other three seasons. Normalized total APA (specified by chlorophyll a and bacteria biomass) showed an inverse hyperbolic relationship with DIP and the threshold phosphate concentration for the transition from high to low APA was around 0.2 mu M in Jiaozhou Bay. Combined with results of APA, P concentrations (including DIP and DOP) and half saturation constant (K-m), our findings suggested that phytoplankton and bacteria in Jiaozhou Bay may be experiencing a relief from P-limitation in winter; while in other three seasons, these organisms were mainly under persistent P stress. Moreover, in order to compensate for phosphate deficiency, we hypothesize that plankton not only by means of promoting enzyme production as indicated by increase of V-max, but also by an improved enzyme affinity as represented by a decrease of the Michaelis constant (K-m). Consequently, higher APA and lower DOP stocks in summer were probably a result of greater utilization of the DOP pool to maintain high primary production. |
| 资助项目 | National Basic Research Program (973 Program) of China[2015CB452905] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0405] ; National Natural Science Foundation of China[41730529] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000725217900004 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/177314]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Huang, Xiaoping |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xia,Zhang, Jingping,Yuan, Huamao,et al. Seasonal dynamics of phytoplankton phosphorus stress in temperate Jiaozhou Bay, North China[J]. CONTINENTAL SHELF RESEARCH,2021,231:9. |
| APA | Zhang, Xia,Zhang, Jingping,Yuan, Huamao,Shen, Yuan,Zhou, Changhao,&Huang, Xiaoping.(2021).Seasonal dynamics of phytoplankton phosphorus stress in temperate Jiaozhou Bay, North China.CONTINENTAL SHELF RESEARCH,231,9. |
| MLA | Zhang, Xia,et al."Seasonal dynamics of phytoplankton phosphorus stress in temperate Jiaozhou Bay, North China".CONTINENTAL SHELF RESEARCH 231(2021):9. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。