Latitudinal and meridional patterns of picophytoplankton variability are contrastingly associated with Ekman pumping and the warm pool in the tropical western Pacific
文献类型：期刊论文
| 作者 | Wang, Yu1; Zhao, Feng2; He, Xuebao1; Wang, Weibo1; Chang, Lin1; Kang, Jianhua1 |
| 刊名 | ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 13期号:10页码:21 |
| ISSN号 | 2045-7758 |
| 关键词 | Ekman pumping mesoscale eddy picophytoplankton spatial variability tropical western Pacific warm pool |
| DOI | 10.1002/ece3.10589 |
| 通讯作者 | Kang, Jianhua(kangjianhua@tio.org.cn) |
| 英文摘要 | Marine picophytoplankton plays a major role in marine cycling and energy conversion, and its effects on the carbon cycle and global climate change have been well documented. In this study, we investigated the response of picophytoplankton across a broad range of physicochemical conditions in two distinct regions of the tropical western Pacific. Our analysis considered the abundance, carbon biomass, size fraction, distribution, and regulatory factors of the picophytoplankton community, which included the cyanobacteria Prochlorococcus and Synechococcus, and small eukaryotic phytoplankton (picoeukaryotes). The first region was a latitudinal transect along the equator (142-163(degrees) E, 0(degrees) N), characterized by stratified oligotrophic conditions. The second region was a meridional transect (143(degrees) E, 0-22(degrees)N) known for its high-nutrient and low-chlorophyll (HNLC) conditions. Results showed that picophytoplankton contributed >80% of the chlorophyll a (Chl a), and was mainly distributed above 100 m. Prochlorococcus was the dominant organism in terms of cell abundance and estimated carbon biomass in both latitudinal and meridional transects, followed by Synechococcus and picoeukaryotes. In the warm pool, Prochlorococcus was primarily distributed below the isothermal layer, with the maximum subsurface abundance forming below it. The maximum Synechococcus abundance was restricted to the west-warm pool, due to the high temperature, and the second-highest Synechococcus abundance was associated with frontal interaction between the east-warm pool and the westward advance of Middle East Pacific water. In contrast, picoeukaryotes formed a maximum subsurface abundance corresponding to the subsurface Chl a maximum. In the mixed HNLC waters, the cell abundance and biomass of the three picophytoplankton groups were slightly lower than those in the warm pool. Due to a cyclonic eddy, the contours of the maximum subsurface Prochlorococcus abundance were uplifted, evidently with a lower value than the surrounding water. Synechococcus abundance varied greatly in patches, forming a weakly high subsurface peak when the isothermal layer rose to the near-surface (<50 m). The subsurface maximum picoeukaryote abundance was also highly consistent with that of the subsurface Chl a maximum. Correlation analysis and generalized additive models of environmental factors showed that nutrient availability had a two-faceted role in regulating the spatial patterns of picophytoplankton in diverse latitudinal and meridional environments. We concluded through regression that temperature and light irradiance were the key determinants of picophytoplankton variability in the tropical western Pacific. This study provides insights into the changing picophytoplankton community structure with potential future changing hydroclimatic force. |
| WOS关键词 | MARINE CYANOBACTERIA PROCHLOROCOCCUS ; PHYTOPLANKTON COMMUNITY STRUCTURE ; CHLOROPHYLL-A CONCENTRATION ; EQUATORIAL PACIFIC ; AUTOTROPHIC PICOPLANKTON ; SYNECHOCOCCUS ABUNDANCE ; HETEROTROPHIC BACTERIA ; SURFACE CHLOROPHYLL ; ATLANTIC-OCEAN ; WATER MASSES |
| 资助项目 | The authors acknowledge Dr. Senming Tang from Hong Kong University for the fruitful discussion and for helping to revise the manuscript. Thanks to the team workers from the Institute of Oceanography for nutrient analysis. We would like to thank Editage ()[2022YFC2804003] ; The authors acknowledge Dr. Senming Tang from Hong Kong University for the fruitful discussion and for helping to revise the manuscript. Thanks to the team workers from the Institute of Oceanography for nutrient analysis. We would like to thank Editage ()[2022YFC3102401] ; National Key and Development Program of China[41506217] ; National Key and Development Program of China[41506136] ; National Key and Development Program of China[41306115] ; National Natural Science Foundation of China[GASI-01-02-04] ; Project of Ministry of Science and Technology |
| WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:001085882600001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/181537]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Kang, Jianhua |
| 作者单位 | 1.Minist Nat Resources, Inst Oceanog 3, Xiamen 361005, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yu,Zhao, Feng,He, Xuebao,et al. Latitudinal and meridional patterns of picophytoplankton variability are contrastingly associated with Ekman pumping and the warm pool in the tropical western Pacific[J]. ECOLOGY AND EVOLUTION,2023,13(10):21. |
| APA | Wang, Yu,Zhao, Feng,He, Xuebao,Wang, Weibo,Chang, Lin,&Kang, Jianhua.(2023).Latitudinal and meridional patterns of picophytoplankton variability are contrastingly associated with Ekman pumping and the warm pool in the tropical western Pacific.ECOLOGY AND EVOLUTION,13(10),21. |
| MLA | Wang, Yu,et al."Latitudinal and meridional patterns of picophytoplankton variability are contrastingly associated with Ekman pumping and the warm pool in the tropical western Pacific".ECOLOGY AND EVOLUTION 13.10(2023):21. |
入库方式： OAI收割
来源：海洋研究所
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