Global prediction of soil microbial growth rates and carbon use efficiency based on the metabolic theory of ecology

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 190, P. 109315 - 109315

Published: Jan. 10, 2024

Language: Английский

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Harnessing ecological theory to enhance ecosystem restoration

Current Biology, Journal Year: 2024, Volume and Issue: 34(9), P. R418 - R434

Published: May 1, 2024

Language: Английский

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Linking species traits and demography to explain complex temperature responses across levels of organization

Proceedings of the National Academy of Sciences, Journal Year: 2021, Volume and Issue: 118(42)

Published: Oct. 12, 2021

Significance Microbes regulate nutrient flux and carbon storage within ecosystems, making them essential to the global cycle ecosystem responses climate change. Understanding how change will alter microbial communities this feed back influence pace of requires linking processes across levels organization, from individual organisms whole ecosystems. We show that physical characteristics (traits) protist species their populations respond changes in temperature. These species-level temperature also composition, dynamics, functioning communities. Using traits understand complex, multilevel with can help us anticipate possible consequences rapid

Language: Английский

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Rapid eco‐phenotypic feedback and the temperature response of biomass dynamics

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(1)

Published: Jan. 1, 2023

Biomass dynamics capture information on population and ecosystem-level processes (e.g., changes in production over time). Understanding how rising temperatures associated with global climate change influence biomass is thus a pressing issue ecology. The total of species depends its density average mass. Consequently, disentangling responds to increasingly warm variable ultimately understanding temperature influences both mass dynamics. Here, we address this by keeping track experimental microbial populations growing carrying capacity for 15 days at two different temperatures, the presence absence variability. We develop simple mathematical expression partition contribution assess responses either one shifts. Moreover, use time-series analysis (Convergent Cross Mapping) variability reciprocal effects vice versa. show that through dynamics, which have opposite can offset each other. also biomass, but effect independent any or Last, shift significantly across regimes, suggesting rapid environment-dependent eco-phenotypic underlie responses. Overall, our results connect phenotypic explain shedding light play cosmopolitan abundant microbes as world experiences temperatures.

Language: Английский

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Drought shifts soil nematodes to smaller size across biological scales

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 184, P. 109099 - 109099

Published: June 16, 2023

Language: Английский

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Warming increases the compositional and functional variability of a temperate protist community

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 171971 - 171971

Published: March 26, 2024

Phototrophic protists are a fundamental component of the world's oceans by serving as primary source energy, oxygen, and organic nutrients for entire ecosystem. Due to high natural seasonality their habitat, temperate could harbour many well-adapted species that tolerate ocean warming. However, these may not sustain ecosystem functions equally well. To address uncertainties, we conducted 30-day mesocosm experiment investigate how moderate (12 °C) substantial (18 warming compared ambient conditions (6 affect composition (18S rRNA metabarcoding) (biomass, gross oxygen productivity, nutritional quality – C:N C:P ratio) North Sea spring bloom community. Our results revealed warming-driven shifts in dominant protist groups, with haptophytes thriving at 12 °C diatoms 18 °C. Species responses primarily depended on thermal traits, indirect temperature effects grazing being less relevant phosphorus acting critical modulator. The Phaeocystis globosa showed highest biomass low phosphate concentrations relatively increased some replicates both treatments. In line this, ratio varied more presence P. than temperature. Examining further under warming, our study lowered productivity but accumulation whereas remained unaltered. Although exhibited resilience elevated temperatures, diminished functional similarity heightened compositional variability indicate potential repercussions higher trophic levels. conclusion, research stresses multifaceted nature communities, emphasising need holistic understanding encompasses trait-based responses, effects, dynamics face exacerbating changes.

Language: Английский

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Food web consequences of thermal asymmetries

Functional Ecology, Journal Year: 2022, Volume and Issue: 36(8), P. 1887 - 1899

Published: May 20, 2022

Abstract Understanding how food webs will respond to globally rising temperatures is a pressing issue. Temperature effects on are likely underpinned by differences in the thermal sensitivity of consumers and resources, or asymmetries. We identify three sources asymmetry portion performance curves: inter‐ thermy variation across thermoregulatory groups, intra‐ within group rate ‐dependent different ecological rates temperature. use large empirical dataset sensitivities groups explore prevalent asymmetries real consumer–resource interactions. then develop theory illustrate web temperature responses mediated magnitude direction these this model show possible conditions under which could warming as currently expected, when that may not be case. Our results suggest inter ‐thermy, intra ‐thermy common natural webs. all have important species abundances trophic levels well maximum position web. Both (i.e. more strongly) their (the difference responses) determine response and, consistent with current expectations, top predator abundance almost always declines temperature, even though increase. While our shows can varied, much explained considering study provides new data theoretical insights into widely varying observed laboratory, experimental observational settings, clarifies prey ecology influence overall changing world. Read free Plain Language Summary for article Journal blog.

Language: Английский

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Protist Predation Influences the Temperature Response of Bacterial Communities

Frontiers in Microbiology, Journal Year: 2022, Volume and Issue: 13

Published: April 7, 2022

Temperature strongly influences microbial community structure and function, in turn contributing to global carbon cycling that can fuel further warming. Recent studies suggest biotic interactions among microbes may play an important role determining the temperature responses of these communities. However, how predation regulates microbiomes under future climates is still poorly understood. Here, we assess whether by a key bacterial consumer—protists—influences response function freshwater microbiome. To do so, exposed communities two cosmopolitan protist species— Tetrahymena thermophila Colpidium sp.—at different temperatures, month-long microcosm experiment. While biomass respiration increased with due shifts, changed over time presence protists. Protists influenced rate through direct indirect effects on structure, predator actually reduced at elevated temperature. Indicator species analyses showed were mostly determined phylum-specific density cell size. Our study supports previous findings driver but also demonstrates large mediate

Language: Английский

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Viral infections likely mediate microbial controls on ecosystem responses to global warming

FEMS Microbiology Ecology, Journal Year: 2023, Volume and Issue: 99(3)

Published: Feb. 24, 2023

Abstract Climate change is affecting how energy and matter flow through ecosystems, thereby altering global carbon nutrient cycles. Microorganisms play a fundamental role in cycling are thus an integral link between ecosystems climate. Here, we highlight major black box hindering our ability to anticipate ecosystem climate responses: viral infections within complex microbial food webs. We show understanding predicting responses warming could be challenging—if not impossible—without accounting for the direct indirect effects of on different microbes (bacteria, archaea, fungi, protists) that together perform diverse functions. Importantly, rising temperatures associated with influence viruses virus-host dynamics crucial this task, yet severely understudied. In perspective, (i) synthesize existing knowledge about virus-microbe-temperature interactions (ii) identify important gaps guide future investigations regarding might alter web functioning. To provide real-world context, consider these processes may operate peatlands—globally significant sinks threatened by change. stress affects biogeochemical cycles any hinges disentangling temperature

Language: Английский

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Mixotrophic microbes create carbon tipping points under warming

Functional Ecology, Journal Year: 2023, Volume and Issue: 37(7), P. 1774 - 1786

Published: May 31, 2023

Abstract Mixotrophs are ubiquitous and integral to microbial food webs, but their impacts on the dynamics functioning of broader ecosystems largely unresolved. Here, we show that mixotrophy produces a unique type web module exhibits unusual ecological dynamics, with surprising consequences for carbon flux under warming. We develop generalizable model mixotrophic incorporates dynamic switching between phototrophy phagotrophy assess total system CO 2 flux. find warming switches systems alternative stable states—including phototrophy‐dominant sink state, phagotrophy‐dominant source state cycling these two. Moreover, always shifts this from coordinated increase in nutrients can erase early warning signals transition expand hysteresis. This suggests mixotrophs generate critical tipping points will be more abrupt less reversible when combined increased nutrient levels, having widespread implications ecosystem face rapid global change. Read free Plain Language Summary article Journal blog.

Language: Английский

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