| Acutely Rising Temperature Reduces Photosynthetic Capacity of Phytoplankton Assemblages in Tropical Oceans A Large-Scale Investigation | |
Mai, Guangming; Liu, Jihua; Xia, Xiaomin; Pang, Xinyue; Li, Binkai ; Yu, Linghui; Tan, Yehui; Song, Xingyu; Li, Gang
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| 第一作者 | Mai, Guangming |
| 2021-07-16 | |
| 发表期刊 | FRONTIERS IN MARINE SCIENCE
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| 卷号 | 8 |
| 摘要 | Climate changes interacting with human activities are raising the temperature in global oceans. To explore physiological responses of in situ phytoplankton assemblages to increasing temperatures, we conducted a shipboard experiment in tropical regions of the eastern Indian Ocean, Java Sea, and southern South China Sea. Throughout the surveyed areas, phytoplankton biomass (Chla) ranged from 0.09 to 0.86 mu g L-1 (median, 0.22 mu g L-1) in the surface and from 0.30 to 0.99 mu g L-1 (median, 0.50 mu g L-1) in maximal chlorophyll layer (DCM), respectively. Picophytoplankton that occupied 27-89% (79%) and 83-92% (88%) of total Chla in the surface and DCM layers, ranged from 0.32 x 10(4) to 23.10 x 10(4) cells mL(-1) (3.69 x 10(4) cells mL(-1)) and from 7.44 x 10(4) to 25.70 x 10(4) cells mL(-1) (12.60 x 10(4) cells mL(-1)), respectively. Synechococcus took up 30-97% (78%) of pico-cells compositions in the surface layer, while, in the DCM layer, Prochlorococcus took up 42-98% (91%). Moreover, the maximal photochemical quantum yield (F-V/F-M) of photosystem II (PS II) and the rapid light curve (RLC)-derived light utilization efficiency (alpha) were lower in the surface layer than that in the DCM layer, but the saturation irradiance (E-K) was higher. In particular, we found that acutely rising temperature decreased the F-V/F-M and alpha in both the surface and the DCM layers but increased the absorption cross-section (sigma(PSII)) of PSII photochemistry. Our results clearly indicate that the presently rising temperature adversely affects the photophysiology of natural phytoplankton assemblages in tropical oceans. |
| DOI | 10.3389/fmars.2021.710697 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/34242 |
| 专题 | 盐湖地质与环境实验室 |
| 推荐引用方式 GB/T 7714 | Mai, Guangming,Liu, Jihua,Xia, Xiaomin,et al. Acutely Rising Temperature Reduces Photosynthetic Capacity of Phytoplankton Assemblages in Tropical Oceans A Large-Scale Investigation[J]. FRONTIERS IN MARINE SCIENCE,2021,8. |
| APA | Mai, Guangming.,Liu, Jihua.,Xia, Xiaomin.,Pang, Xinyue.,Li, Binkai.,...&Li, Gang.(2021).Acutely Rising Temperature Reduces Photosynthetic Capacity of Phytoplankton Assemblages in Tropical Oceans A Large-Scale Investigation.FRONTIERS IN MARINE SCIENCE,8. |
| MLA | Mai, Guangming,et al."Acutely Rising Temperature Reduces Photosynthetic Capacity of Phytoplankton Assemblages in Tropical Oceans A Large-Scale Investigation".FRONTIERS IN MARINE SCIENCE 8(2021). |
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| Acutely Rising Tempe（1904KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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