气候变化领域集成服务门户(CCPortal): Dust storms increase the tolerance of phytoplankton to thermal and pH changes

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DOI	10.1111/gcb.17055
	Dust storms increase the tolerance of phytoplankton to thermal and pH changes
	Gonzalez-Olalla, Juan Manuel; Powell, James A.; Brahney, Janice
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	1
卷号	30 期号:1
英文摘要	Aquatic communities are increasingly subjected to multiple stressors through global change, including warming, pH shifts, and elevated nutrient concentrations. These stressors often surpass species tolerance range, leading to unpredictable consequences for aquatic communities and ecosystem functioning. Phytoplankton, as the foundation of the aquatic food web, play a crucial role in controlling water quality and the transfer of nutrients and energy to higher trophic levels. Despite the significance in understanding the effect of multiple stressors, further research is required to explore the combined impact of multiple stressors on phytoplankton. In this study, we used a combination of crossed experiment and mechanistic model to analyze the ecological and biogeochemical effects of global change on aquatic ecosystems and to forecast phytoplankton dynamics. We examined the effect of dust (0-75mgL(-1)), temperature (19-27 degrees C), and pH (6.3-7.3) on the growth rate of the algal species Scenedesmus obliquus. Furthermore, we carried out a geospatial analysis to identify regions of the planet where aquatic systems could be most affected by atmospheric dust deposition. Our mechanistic model and our empirical data show that dust exerts a positive effect on phytoplankton growth rate, broadening its thermal and pH tolerance range. Finally, our geospatial analysis identifies several high-risk areas including the highlands of the Tibetan Plateau, western United States, South America, central and southern Africa, central Australia as well as the Mediterranean region where dust-induced changes are expected to have the greatest impacts. Overall, our study shows that increasing dust storms associated with a more arid climate and land degradation can reverse the negative effects of high temperatures and low pH on phytoplankton growth, affecting the biogeochemistry of aquatic ecosystems and their role in the cycles of the elements and tolerance to global change.
英文关键词	aerosol deposition; dust; growth rate; interactive effects; mechanistic model; pH; phytoplankton dynamic; temperature
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001151213000069
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302864
作者单位	Utah System of Higher Education; Utah State University; Utah System of Higher Education; Utah State University
推荐引用方式 GB/T 7714	Gonzalez-Olalla, Juan Manuel,Powell, James A.,Brahney, Janice. Dust storms increase the tolerance of phytoplankton to thermal and pH changes[J],2024,30(1).
APA	Gonzalez-Olalla, Juan Manuel,Powell, James A.,&Brahney, Janice.(2024).Dust storms increase the tolerance of phytoplankton to thermal and pH changes.GLOBAL CHANGE BIOLOGY,30(1).
MLA	Gonzalez-Olalla, Juan Manuel,et al."Dust storms increase the tolerance of phytoplankton to thermal and pH changes".GLOBAL CHANGE BIOLOGY 30.1(2024).