Aridity determines the effects of warming on community stability in Inner Mongolian grassland

Liu, Zunchi; Zhang, Senmao; Lock, T. Ryan; Kallenbach, Robert L.; Yuan, Zhiyou

doi:10.1016/j.agrformet.2022.109274

Cited by 5 publications

(9 citation statements)

References 58 publications

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“…There has been considerable concern about the effects of climate warming on natural grassland stability (Liu et al., 2023; Zelikova et al., 2014), as raised temperature might reduce ANPP through elevated soil temperature and the associated decrease in soil water for plant growth (Wu et al., 2021). While raised temperature decreased ANPP, it is not the primary factor among the multiple climate drivers influencing ANPP stability, as indicated by its low partial R 2 (0.05) in the linear mixed‐effect model, which is consistent with results derived in a meta‐analysis of manipulative warming experiments across a wide geographical range (Su et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Previous climate change experiments indicate that either chronic climate changes or extreme climatic events are important to alter ANPP stability via biodiversity, species asynchrony and dominant species effect in natural grasslands (Liu et al, 2023;Shi et al, 2016;Zelikova et al, 2014). This implies that they may jointly drive change in ANPP stability; however, climate change research has been dominated by studies of chronic directional climate change rather than discrete ECEs (Jentsch et al, 2007;Smith, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The temporal stability of aboveground net primary productivity (ANPP), referred to as ANPP stability, is the degree of constancy in a variable relative to its mean, which serves as an important predictor of the persistence of grassland community (Hautier et al., 2015; Tilman et al., 2006). Previous climate change experiments indicate that either chronic climate changes or extreme climatic events are important to alter ANPP stability via biodiversity, species asynchrony and dominant species effect in natural grasslands (Liu et al., 2023; Shi et al., 2016; Zelikova et al., 2014). This implies that they may jointly drive change in ANPP stability; however, climate change research has been dominated by studies of chronic directional climate change rather than discrete ECEs (Jentsch et al., 2007; Smith, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Increased frequency of extreme climatic events weakens the community stability of natural grassland under directional climate changes by reducing resilience

Liu,

Lv,

Sun

et al. 2024

Global Ecol Biogeogr

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AimChronic directional climate changes in temperature and precipitation are predicted to increase the frequency of extreme climatic events (ECEs); however, their co‐occurring effects on the temporal stability of community productivity (i.e. ANPP stability) are still unclear. Here, we evaluate whether the increased frequency of ECEs reduces ANPP stability, and how it modulates the effects of chronic directional climate factors on ANPP stability in natural grassland.LocationTwenty‐two sites in Asia and 14 sites in North America.Time period1980s–2010s.Major taxa studiedHerbaceous plant.MethodsWe collected 36 long‐term observational and consecutive ANPP data (at least 10 years) and resampled yearly ANPP via a consecutive resampling method of nested time windows for each field. We used linear mixed‐effect models, partial regression analysis and structure equation models to explore the interactive effects of three climatic factors on ANPP stability and their associated intermediate processes of sensitivity, asymmetry, resistance and resilience.ResultsThe increased frequency of ECEs was observed within the long‐term rising temperature and elevating precipitation trend across sites in the past several decades. Elevating precipitation rather than rising temperature was the primary driver influencing ANPP stability. Elevating precipitation increased ANPP stability through increasing mean ANPP and decreasing the standard deviation (i.e. SD) of ANPP due to a decrease in sensitivity of ANPP to precipitation. The increased frequency of ECEs decreased ANPP stability mainly by increasing the SD of ANPP, and it reduced the positive effect of elevated precipitation on ANPP stability via a decrease in resilience.Main conclusionOur results demonstrated that recurrent and discrete ECEs had cumulatively negative effects on ANPP stability, and the decreased resilience was identified as the primary factor reducing the grassland community stability under long‐term climate change. This highlighted the potential risks of increased frequency of ECEs for grassland ecosystem functions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Increased frequency of extreme climatic events weakens the community stability of natural grassland under directional climate changes by reducing resilience

Liu,

Lv,

Sun

et al. 2024

Global Ecol Biogeogr

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“…provides high confidence that arid and semi-arid ecosystems should be viewed as more vulnerable to drought (and potentially warming as well, see Liu, Zhang, et al, 2023) than more mesic ecosystems.…”

Section: Resolving How Drought Sensitivity Varies Along Aridity Gradi...mentioning

confidence: 92%

“…more arid grasslands tend to be more sensitive than more mesic grasslands) and across biomes (e.g. grasslands tend to be more sensitive to drought than forests) provides high confidence that arid and semi‐arid ecosystems should be viewed as more vulnerable to drought (and potentially warming as well, see Liu, Zhang, et al., 2023) than more mesic ecosystems.…”

Section: How Have Drought Experiments Advanced Our Understanding?mentioning

confidence: 98%

Field experiments have enhanced our understanding of drought impacts on terrestrial ecosystems—But where do we go from here?

Knapp,

Condon,

Folks

et al. 2023

Functional Ecology

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We review results from field experiments that simulate drought, an ecologically impactful global change threat that is predicted to increase in magnitude, extent, duration and frequency. Our goal is to address, from primarily an ecosystem perspective, the questions ‘What have we learned from drought experiments?’ and ‘Where do we go from here?’. Drought experiments are among the most numerous climate change manipulations and have been deployed across a wide range of biomes, although most are conducted in short‐statured, water‐limited ecosystems. Collectively, these experiments have enabled ecologists to quantify the negative responses to drought that occur for most aspects of ecosystem structure and function. Multiple meta‐analyses of responses have also enabled comparisons of relative effect sizes of drought across hundreds of sites, particularly for carbon cycle metrics. Overall, drought experiments have provided strong evidence that ecosystem sensitivity to drought increases with aridity, but that plant traits associated with aridity are not necessarily predictive of drought resistance. There is also intriguing evidence that as drought magnitude or duration increases to extreme levels, plant strategies may shift from drought tolerance to drought escape/avoidance. We highlight three areas where more drought experiments are needed to advance our understanding. First, because drought is intensifying in multiple ways, experiments are needed that address alterations in drought magnitude versus duration, timing and/or frequency (individually and interactively). Second, drivers of drought may be shifting—from precipitation deficits to rising atmospheric demand for water—and disentangling how ecosystems respond to changes in hydrological ‘supply versus demand’ is critical for understanding drought impacts in the future. Finally, more attention should be focussed on post‐drought recovery periods since legacies of drought can affect ecosystem functioning much longer than the drought itself. We conclude with a call for a fundamental shift in the focus of drought experiments from those designed primarily as ‘response experiments’, quantifying the magnitude of change in ecosystem structure and function, to more ‘mechanistic experiments’—those that explicitly manipulate ecological processes or attributes thought to underpin drought responses. Read the free Plain Language Summary for this article on the Journal blog.

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Genetic modification strategies for enhancing plant resilience to abiotic stresses in the context of climate change

KhokharVoytas,

Shahbaz,

Maqsood

et al. 2023

Funct Integr Genomics

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Aridity determines the effects of warming on community stability in Inner Mongolian grassland

Cited by 5 publications

References 58 publications

Increased frequency of extreme climatic events weakens the community stability of natural grassland under directional climate changes by reducing resilience

Increased frequency of extreme climatic events weakens the community stability of natural grassland under directional climate changes by reducing resilience

Field experiments have enhanced our understanding of drought impacts on terrestrial ecosystems—But where do we go from here?

Genetic modification strategies for enhancing plant resilience to abiotic stresses in the context of climate change

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