Global meta-analysis shows pervasive phosphorus limitation of aboveground plant production in natural terrestrial ecosystems

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Jan. 31, 2020

Phosphorus (P) limitation of aboveground plant production is usually assumed to occur in tropical regions but rarely elsewhere. Here we report that such P more widespread and much stronger than previously estimated. In our global meta-analysis, almost half (46.2%) 652 P-addition field experiments reveal a significant on production. Globally, additions increase by 34.9% natural terrestrial ecosystems, which 7.0-15.9% higher suggested. croplands, contrast, only 13.9%, probably because historical fertilizations. The magnitude also differs among climate zones regions, driven climate, ecosystem properties, fertilization regimes. addition confirming study demonstrates often occurs other regions. This suggests previous studies have underestimated the importance altered supply ecosystems.

Language: Английский

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Microbial carbon limitation: The need for integrating microorganisms into our understanding of ecosystem carbon cycling

Global Change Biology, Journal Year: 2019, Volume and Issue: 26(4), P. 1953 - 1961

Published: Dec. 15, 2019

Numerous studies have demonstrated that fertilization with nutrients such as nitrogen, phosphorus, and potassium increases plant productivity in both natural managed ecosystems, demonstrating primary is nutrient limited most terrestrial ecosystems. In contrast, it has been heterotrophic microbial communities soil are primarily by organic carbon or energy. While this concept of contrasting limitations, is, limitation, based on strong evidence we review paper, often ignored discussions ecosystem response to global environment changes. The plant-centric perspective equated limitations those whole thereby ignoring the important role heterotrophs responsible for decomposition driving storage. To truly integrate cycles science, must account fact while may be limited, secondary inherently limited. Ecosystem cycling integrates independent physiological responses its individual components, well tightly coupled exchanges between autotrophs heterotrophs. extent interacting autotrophic processes controlled organisms versus accessibility, respectively, propose ecosystems definition cannot 'limited' alone. Here, outline how models aimed at predicting non-steady state over time can benefit from dissecting into organismal components their inherent better represent plant-microbe interactions models.

Language: Английский

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Amazon forest response to CO2 fertilization dependent on plant phosphorus acquisition

Nature Geoscience, Journal Year: 2019, Volume and Issue: 12(9), P. 736 - 741

Published: Aug. 5, 2019

Language: Английский

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Long‐term nitrogen loading alleviates phosphorus limitation in terrestrial ecosystems

Global Change Biology, Journal Year: 2020, Volume and Issue: 26(9), P. 5077 - 5086

Published: June 12, 2020

Increased human-derived nitrogen (N) deposition to terrestrial ecosystems has resulted in widespread phosphorus (P) limitation of net primary productivity. However, it remains unclear if and how N-induced P varies over time. Soil extracellular phosphatases catalyze the hydrolysis from soil organic matter, an important adaptive mechanism for cope with limitation. Here we show, using a meta-analysis 140 studies 668 observations worldwide, that N stimulation phosphatase activity diminishes Whereas short-term loading (≤5 years) significantly increased by 28%, long-term had no significant effect. Nitrogen did not affect available total content either short- or studies. Together, these results suggest is alleviated through initial activity, thereby securing supply support plant growth. Our increases carbon uptake due ongoing anthropogenic may be greater than previously thought.

Language: Английский

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Long-term impacts of wildfire and logging on forest soils

Nature Geoscience, Journal Year: 2019, Volume and Issue: 12(2), P. 113 - 118

Published: Jan. 21, 2019

Language: Английский

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Direct evidence for phosphorus limitation on Amazon forest productivity

Nature, Journal Year: 2022, Volume and Issue: 608(7923), P. 558 - 562

Published: Aug. 10, 2022

Language: Английский

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Latitudinal patterns of terrestrial phosphorus limitation over the globe

Ecology Letters, Journal Year: 2021, Volume and Issue: 24(7), P. 1420 - 1431

Published: April 24, 2021

Abstract Phosphorus limitation on terrestrial plant growth is being incorporated into Earth system models. The global pattern of phosphorus limitation, however, remains unstudied. Here, we examined the global‐scale latitudinal by analysing a total 1068 observations aboveground production response to additions at 351 forest, grassland or tundra sites that are distributed globally. observed phosphorus‐addition effect varied greatly (either positive negative), depending significantly upon fertilisation regime and measure, but did not change with latitude. In contrast, standardised measure was consistently decreased Latitudinal gradient in explained several mechanisms involving substrate age, climate, vegetation type, edaphic properties biochemical machinery. This study suggests jointly shaped macro‐scale driving forces fundamental structure life.

Language: Английский

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Plant phosphorus‐use and ‐acquisition strategies in Amazonia

New Phytologist, Journal Year: 2022, Volume and Issue: 234(4), P. 1126 - 1143

Published: Jan. 21, 2022

In the tropical rainforest of Amazonia, phosphorus (P) is one main nutrients controlling forest dynamics, but its effects on future biomass carbon (C) storage under elevated atmospheric CO2 concentrations remain uncertain. Soils in vast areas Amazonia are P-impoverished, and little known about variation or plasticity plant P-use -acquisition strategies across space time, hampering accuracy projections vegetation models. Here, we synthesize current knowledge leaf P resorption, fine-root foraging, arbuscular mycorrhizal symbioses, root acid phosphatase organic exudation discuss how these vary with soil response to . We identify gaps suggest ways forward fill those gaps. Additionally, propose a conceptual framework for variations along gradients Amazonia. that soils intermediate high concentrations, at community level, investments primarily directed foraging via roots mycorrhizas, whereas low shift prioritize resorption mining phosphatases acids.

Language: Английский

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Responses of arbuscular mycorrhizal fungi to nitrogen addition: A meta‐analysis

Global Change Biology, Journal Year: 2020, Volume and Issue: 26(12), P. 7229 - 7241

Published: Sept. 27, 2020

Abstract Arbuscular mycorrhizal (AM) fungi play important roles in carbon (C), nitrogen (N) and phosphorus (P) cycling of terrestrial ecosystems. The impact increasing N deposition on AM will inevitably affect ecosystem processes. However, generalizable patterns how affects remains poorly understood. Here we conducted a global‐scale meta‐analysis from 94 publications 101 sites to investigate the responses addition, including abundance both intra‐radical (host roots) extra‐radical portion (soil), richness diversity. We also explored mechanisms addition affecting by trait‐based guilds method. Results showed that significantly decreased fungal overall (−8.0%). response was not consistent with portion: root colonization (−11.6%) significantly, whereas hyphae length density did change significantly. Different different addition: (spore density) relative rhizophilic guild under (−29.8% −12.0%, respectively), while edaphophilic had insignificant addition. Such inconsistent were mainly moderated soil pH biomass, respectively. Moreover, an negative effect diversity, which strongly related availability P (i.e. available N/P ratio). Collectively, this highlights considering guilds, host plant C allocation can greatly improve our understanding nuanced dynamics communities deposition.

Language: Английский

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Plant responses to nutrient addition experiments conducted in tropical forests

Ecological Monographs, Journal Year: 2019, Volume and Issue: 89(4)

Published: June 9, 2019

Abstract I present a meta‐analysis of plant responses to 48 nutrient addition experiments conducted with native species in naturally growing tropical forests, exclusive mangrove forests. The added nutrients include nitrogen (N) 36 experiments, phosphorus (P) 33 calcium and potassium one experiment each, various mixtures essential the remaining experiments. evaluate hypotheses that limit forest plants, limitation is stronger successional than old‐growth P but not N limiting lowland montane Responses most complete mix used each were strong for functions contribute aboveground production (Hedges’ g averages 0.87) nonsignificant fine root biomass. tissue concentrations element 0.75 1.4, respectively), moderate litter (0.64 0.65, weak growth (0.46 0.37, respectively) Growth All unrelated elevation. included 30 factorial nitrogen‐phosphorus enable additional direct tests widely cited forests vice versa Both rejected. × interaction effect was across In conclusion, clearly plants. Limitation by widespread both same true P. Single identify potassium, correlative studies suggest calcium, magnesium. available evidence consistent possibility macronutrients plants; however, focus almost exclusively on way forward will taking fuller advantage existing siting new strategically, developing cost‐effective methods assay all soils supply

Language: Английский

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