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| DOI | 10.1016/j.envpol.2024.123918 |
| Warming temperatures exacerbate effects of microplastics in a widespread zooplankton species | |
| 发表日期 | 2024 |
| ISSN | 0269-7491 |
| EISSN | 1873-6424 |
| 起始页码 | 349 |
| 卷号 | 349 |
| 英文摘要 | The emergence of microplastics as a global contaminant of concern has coincided with climate change induced temperature warming in aquatic ecosystems. Warmer temperatures have been previously demonstrated to increase the toxicity of certain contaminants, but it is currently unclear if microplastics are similarly affected by temperature. As aquatic organisms simultaneously face microplastic pollution and both increasing and variable temperatures, understanding how temperature affects microplastic toxicity is pertinent in this era of humaninduced global change. In this study, we investigate the effects of environmentally relevant microplastic exposure to Daphnia pulex survival, reproduction, and growth at three different temperatures. To simulate an environmentally relevant exposure scenario, we created microplastics with physicochemical characteristics often detected in nature, and exposed organisms to concentrations close to values reported in inland waters and 1-2 orders of magnitude higher. The three temperatures tested in this experiment included 12 degrees C, 20 degrees C, and 24 degrees C, to simulate cool/springtime, current, and warming scenarios. We found the highest concentration of microplastics significantly impacted survival and total offspring compared to the control at 20 degrees C and 24 degrees C, but not at 12 degrees C. The adverse effect of high microplastic concentrations on total offspring at warmer temperatures was driven by the high mortality of the juveniles. We observed no effect of microplastics on time to first reproduction or average growth rate at any temperature. Warmer temperatures exacerbated microplastic toxicity, although only for concentrations of microplastics not currently observed in nature, but these concentrations are possible in pollution hotspots, through pulses pollution events or future worsening environmental contamination. The results of our study illustrate the continued need to further investigate climate change related co-stressors such as warming temperatures in microplastic and pollution ecology, through environmentally realistic exposure scenarios. |
| 英文关键词 | Microplastic; Fibers; Polyester; Daphnia; Climate change; Temperature |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001227165800001 |
| 来源期刊 | ENVIRONMENTAL POLLUTION
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/309054 |
| 作者单位 | University of British Columbia; University of British Columbia; University of British Columbia |
| 推荐引用方式 GB/T 7714 | . Warming temperatures exacerbate effects of microplastics in a widespread zooplankton species[J],2024,349. |
| APA | (2024).Warming temperatures exacerbate effects of microplastics in a widespread zooplankton species.ENVIRONMENTAL POLLUTION,349. |
| MLA | "Warming temperatures exacerbate effects of microplastics in a widespread zooplankton species".ENVIRONMENTAL POLLUTION 349(2024). |
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