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| DOI | 10.1016/j.scitotenv.2024.170644 |
| The impact of extreme weather events exceeds those due to global-change drivers on coastal phytoplankton assemblages | |
| 发表日期 | 2024 |
| ISSN | 0048-9697 |
| EISSN | 1879-1026 |
| 起始页码 | 918 |
| 卷号 | 918 |
| 英文摘要 | Extreme wind and rainfall events have become more frequent phenomena, impacting coastal ecosystems by inducing increased mixing regimes in the upper mixed layers (UML) and reduced transparency (i.e. browning), hence affecting phytoplankton photosynthesis. In this study, five plankton assemblages from the South Atlantic Ocean, from a gradient of environmental variability and anthropogenic exposure, were subjected to simulated extreme weather events under a global change scenario (GCS) of increased temperature and nutrients and decreased pH, and compared to ambient conditions (Control). Using multiple linear regression (MLR) analysis we determined that evenness and the ratio of diatoms/ (flagellates + dinoflagellates) significantly explained the variations (81-91 %) of the photosynthesis efficiency (i.e. P-chla/ETRchla ratio) for each site under static conditions. Mixing speed and the optical depth (i.e. attenuation coefficient * depth, k(d)z), as single drivers, explained 40-76 % of the variability in the P-chla/ETRchla ratio, while GCS drivers <9 %. Overall, assemblages with high diversity and evenness were less vulnerable to extreme weather events under a GCS. Extreme weather events should be considered in global change studies and conservation/management plans as even at local/regional scales, they can exceed the predicted impacts of mean global climate change on coastal primary productivity. |
| 英文关键词 | Acidification; Nutrients inputs; Photosynthetic efficiency; Terrestrial runoff; Vertical mixing; Warming |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001181733100001 |
| 来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/296944 |
| 作者单位 | Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Universidad Nacional del Comahue; Universidad Nacional del Comahue; University of Granada |
| 推荐引用方式 GB/T 7714 | . The impact of extreme weather events exceeds those due to global-change drivers on coastal phytoplankton assemblages[J],2024,918. |
| APA | (2024).The impact of extreme weather events exceeds those due to global-change drivers on coastal phytoplankton assemblages.SCIENCE OF THE TOTAL ENVIRONMENT,918. |
| MLA | "The impact of extreme weather events exceeds those due to global-change drivers on coastal phytoplankton assemblages".SCIENCE OF THE TOTAL ENVIRONMENT 918(2024). |
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