气候变化领域集成服务门户(CCPortal): Timing determines zooplankton community responses to multiple stressors

CCPortal

DOI	10.1111/gcb.17358
	Timing determines zooplankton community responses to multiple stressors
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	6
卷号	30 期号:6
英文摘要	Human activities and climate change cause abiotic factors to fluctuate through time, sometimes passing thresholds for organismal reproduction and survival. Multiple stressors can independently or interactively impact organisms; however, few studies have examined how they interact when they overlap spatially but occur asynchronously. Fluctuations in salinity have been found in freshwater habitats worldwide. Meanwhile, heatwaves have become more frequent and extreme. High salinity pulses and heatwaves are often decoupled in time but can still collectively impact freshwater zooplankton. The time intervals between them, during which population growth and community recovery could happen, can influence combined effects, but no one has examined these effects. We conducted a mesocosm experiment to examine how different recovery times (0-, 3-, 6-week) between salt treatment and heatwave exposure influence their combined effects. We hypothesized that antagonistic effects would appear when having short recovery time, because previous study found that similar species were affected by the two stressors, but effects would become additive with longer recovery time since fully recovered communities would respond to heatwave similar to undisturbed communities. Our findings showed that, when combined, the two-stressor joint impacts changed from antagonistic to additive with increased recovery time between stressors. Surprisingly, full compositional recovery was not achieved despite a recovery period that was long enough for population growth, suggesting legacy effects from earlier treatment. The recovery was mainly driven by small organisms, such as rotifers and small cladocerans. As a result, communities recovering from previous salt exposure responded differently to heatwaves than undisturbed communities, leading to similar zooplankton communities regardless of the recovery time between stressors. Our research bolsters the understanding and management of multiple-stressor issues by revealing that prior exposure to one stressor has long-lasting impacts on community recovery that can lead to unexpected joint effects of multiple stressors. Salinity and temperature fluctuate temporally in freshwater lakes, causing salt stress and heatwaves to overlap spatially but occur asynchronously. We examined how recovery times between these stressors affect their joint impacts on zooplankton communities. The joint impacts changed with increased recovery times. Zooplankton communities did not fully recover after salt stress despite a long recovery period, suggesting legacy effects. As a result, communities recovering from previous salt exposure responded differently to heatwaves than undisturbed communities, leading to similar outcomes regardless of recovery times. Our work reveals that earlier stressor exposure can have long-lasting impacts on communities, causing unexpected combined effects.image
英文关键词	climate change; freshwater; heatwave; pulse stressor; recovery; road salt; salinization; temporal fluctuation
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:001236082500001
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/292212
作者单位	Queens University - Canada; Michigan State University
推荐引用方式 GB/T 7714	. Timing determines zooplankton community responses to multiple stressors[J],2024,30(6).
APA	(2024).Timing determines zooplankton community responses to multiple stressors.GLOBAL CHANGE BIOLOGY,30(6).
MLA	"Timing determines zooplankton community responses to multiple stressors".GLOBAL CHANGE BIOLOGY 30.6(2024).

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