Vulnerability of Labile Organic Matter to Eutrophication and Warming in Temperate Mangrove Ecosystems DOI Creative Commons
Timothy Thomson,

Conrad A. Pilditch,

Marco Fusi

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

ABSTRACT The sediments in mangrove forests play an important role the global carbon cycle due to high inputs of organic matter (OM) and low decomposition rates, making them highly efficient at sequestering carbon. balance between OM sequestration these systems is influenced by a complex interplay environmental factors. However, there large amount uncertainty surrounding rates from forests, particularly regional scales. We used standardized assays labile recalcitrant substrate 30 estuaries, spanning gradient human land use intensity, identify dominant drivers temperate forests. Our results reveal that, while strongly driven eutrophication, primarily increases minimum sediment temperature. Furthermore, we demonstrate that nutrient enrichment use, combination with increased temperature, synergistically accelerates OM, thereby threatening potential ecosystems. This suggests coastal eutrophication can exacerbate effects warming on decomposition, leading heightened vulnerability storage feedbacks local stressors.

Language: Английский

Pervasive associations between dark septate endophytic fungi with tree root and soil microbiomes across Europe DOI Creative Commons
Tarquin Netherway, Jan Bengtsson, Franz Buegger

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 2, 2024

Abstract Trees interact with a multitude of microbes through their roots and root symbionts such as mycorrhizal fungi endophytes. Here, we explore the role fungal predictors soil root-associated microbiomes widespread broad-leaved trees across European latitudinal gradient. Our results suggest that, alongside factors climate, soil, vegetation properties, colonization by ectomycorrhizal, arbuscular mycorrhizal, dark septate endophytic also shapes tree-associated microbiomes. Notably, structure our sites is more strongly consistently associated endophyte than many abiotic factors. Root endophytes has consistent negative association relative abundance diversity nutrient cycling genes. study not only indicates that root-symbiotic interactions are an important factor structuring communities functions in forest ecosystems, but hitherto less studied likely to be central players these interactions.

Language: Английский

Citations

31
Towards mechanistic integration of the causes and consequences of biodiversity DOI
Shaopeng Wang, Pubin Hong, Peter B. Adler

et al.

Trends in Ecology & Evolution, Journal Year: 2024, Volume and Issue: 39(7), P. 689 - 700

Published: March 19, 2024

Language: Английский

Citations

16
Functional Traits and Species Identity Drive Decomposition Along a Successional Gradient in Upper Andean Tropical Forests DOI
Dennis Castillo‐Figueroa,

Diego Soler‐Marín,

Juan M. Posada

et al.

Biotropica, Journal Year: 2025, Volume and Issue: 57(1)

Published: Jan. 1, 2025

ABSTRACT Leaf litter decomposition constitutes one of the most vital processes for maintaining productivity and carbon release in ecosystems. However, this remains least understood upper Andean tropical forests (UATF), a highly diverse ecoregion that has undergone extensive transformation over centuries. In study, we aimed to determine relationships between rates leaf litter, functional traits, microclimatic conditions along successional gradient UATF. We also tested “after‐life effect” by analyzing changes green senescent leaves. performed fully reciprocal translocation experiment with 15 representative species UATF set 14 permanent plots using 2520 litterbags distributed across 42 experimental units (three litterbeds per plot), 1.5 years, four harvesting times (3, 6, 12, 18 months). Chemical physical traits were measured leaves identify best predictors analyze effect.” found identity drive UATF, rather than succession soil moisture temperature. The relative importance was prevalent all stages decay, despite being stronger early phases. Although an decomposition, chemical composition from indicated substantial nitrogen resorption, which is limiting resource montane forests. With increasing landscape plant could have profound impacts altering rates, nutrient cycling, global storage.

Language: Английский

Citations

3
Substrate and climate determine terrestrial litter decomposition DOI Creative Commons
Qiuxia Wu, Xiangyin Ni,

Xinyao Sun

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2025, Volume and Issue: 122(7)

Published: Feb. 11, 2025

Litter decomposition is a fundamental biogeochemical process for carbon flux and nutrient cycling in terrestrial ecosystems, yet the global variation rates their covariations with climate substrate are not fully understood. Here, we synthesized dataset of 6,733 independent observations across six continents to illustrate climatic controls over litter decomposition. The average various types ranged from 0.74 4.01 y −1 polar tropics, showing large geographical span. directly explained 36 30% variations rates, carbon-to-nitrogen ratio identified as best predictor. In absence variables, can effectively explain variation, while model’s predictive capacity decreased significantly after was excluded. Our synthesis highlights that constraint on leads predictable global-scale patterns rates. Integrating chemistry parameters should be prioritized parameter optimization Earth system models.

Language: Английский

Citations

2
Impact of drought on soil microbial biomass and extracellular enzyme activity DOI Creative Commons
Qing Qu, Zhen Wang,

Quan Gan

et al.

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: Aug. 25, 2023

Introduction With the continuous changes in climate patterns due to global warming, drought has become an important limiting factor development of terrestrial ecosystems. However, a comprehensive understanding impact on soil microbial activity at scale is lacking. Methods In this study, we aimed examine effects biomass (carbon [MBC], nitrogen [MBN], and phosphorus [MBP]) enzyme (β-1, 4-glucosidase [BG]; β-D-cellobiosidase [CBH]; β-1, 4-N-acetylglucosaminidase [NAG]; L-leucine aminopeptidase [LAP]; acid phosphatase [AP]). Additionally, conducted meta-analysis determine degree which these are regulated by vegetation type, intensity, duration, mean annual temperature (MAT). Result discussion Our results showed that significantly decreased MBC, MBN, MBP levels BG AP 22.7%, 21.2%, 21.6%, 26.8%, 16.1%, respectively. terms mainly affected MBC MBN croplands grasslands. Furthermore, response ratio BG, CBH, NAG, LAP were negatively correlated with whereas CBH duration. NAG MAT. conclusion, reduced scale. highlight strong carbon- phosphorus-acquiring activity.

Language: Английский

Citations

26
Reading tea leaves worldwide: Decoupled drivers of initial litter decomposition mass‐loss rate and stabilization DOI
Judith M. Sarneel, Mariet M. Hefting, Taru Sandén

et al.

Ecology Letters, Journal Year: 2024, Volume and Issue: 27(5)

Published: May 1, 2024

Abstract The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding global decomposition patterns the drivers such are hampered by lack coherent large‐scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide found an overall negative correlation between initial mass‐loss rates stabilization factors plant‐derived carbon, using Tea Bag Index (TBI). factor quantifies degree to which easy‐to‐degrade components accumulate during early‐stage (e.g. environmental limitations). However, agriculture interaction moisture temperature led a decoupling stabilization, notably in colder locations. Using TBI improved estimates natural litter compared models that ignored stabilization. Ignoring transformation dead more recalcitrant substances decomposition, control this transformation, could overestimate carbon losses early cycle models.

Language: Английский

Citations

15
Microclimate modulation: An overlooked mechanism influencing the impact of plant diversity on ecosystem functioning DOI Creative Commons
Rémy Beugnon, Nolwenn Le Guyader, Alexandru Milcu

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

Abstract Changes in climate and biodiversity are widely recognized as primary global change drivers of ecosystem structure functioning, also affecting services provided to human populations. Increasing plant diversity not only enhances functioning stability but mitigates effects buffers extreme weather conditions, yet the underlying mechanisms remain largely unclear. Recent studies have shown that can mitigate (e.g. reduce temperature fluctuations or drought through microclimatic effects) different compartments focal ecosystem, which such may contribute effect on properties functioning. However, these potential diversity‐induced microclimate sufficiently understood. Here, we explored consequences modulation modification by for a mechanism contributing documented biodiversity–ecosystem (BEF) relationships, using combination theoretical simulation approaches. We focused diverse set response variables at various levels integration ranging from ecosystem‐level carbon exchange soil enzyme activity, including population dynamics activity specific organisms. demonstrated vegetation layer composed many species has influence thus mitigating negative impacts extremes Integrating processes temperature, humidity light modulation) BEF relationships is promising avenue improve our understanding better predict future structure, services. In addition, management monitoring should be seen tool practitioners adapt ecosystems change.

Language: Английский

Citations

13
Biodiversity mitigates drought effects in the decomposer system across biomes DOI Creative Commons
Junwei Luan, Siyu Li, Shirong Liu

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(13)

Published: March 18, 2024

Multiple facets of global change affect the earth system interactively, with complex consequences for ecosystem functioning and stability. Simultaneous climate biodiversity are particular concern, because may contribute to resistance resilience mitigate impacts. Yet, extent generality how interact remain insufficiently understood, especially decomposition organic matter, a major determinant biosphere–atmosphere carbon feedbacks. With an inter-biome field experiment using large rainfall exclusion facilities, we tested drought, common prediction models many parts world, in decomposer drive forest ecosystems interactively. Decomposing leaf litter lost less (C) nitrogen (N) five different biomes following partial compared conditions without exclusion. An increasing complexity community alleviated drought effects, full compensation when large-bodied invertebrates were present. Leaf mixing increased diversity species richness, which contributed counteracting effects on C N loss, although much smaller degree than complexity. Our results show at relevant spatial scale covering distinct zones that both, communities plant floors have strong potential dynamics during decomposition. Preserving multiple trophic levels contributes appears critical maintain processes under ongoing change.

Language: Английский

Citations

9
Multiple dimensions of soil food-web research: History and prospects DOI
Anton Potapov, Zoë Lindo, Robert W. Buchkowski

et al.

European Journal of Soil Biology, Journal Year: 2023, Volume and Issue: 117, P. 103494 - 103494

Published: May 11, 2023

Language: Английский

Citations

22
Climate dependence of the macrofaunal effect on litter decomposition—A global meta‐regression analysis DOI Creative Commons
Nevo Sagi, Dror Hawlena

Ecology Letters, Journal Year: 2023, Volume and Issue: 27(1)

Published: Oct. 24, 2023

Litter decomposition by microorganisms and animals is influenced climate has been found to be higher in warm wet than cold dry biomes. We, however, hypothesized that the macrofaunal effect on should increase with temperature aridity since larger are more tolerant smaller organisms. This hypothesis was supported our global analysis of macrofauna exclusion studies. Macrofauna increased litter mass loss average 40%, twofold highest previous estimation decomposition. The strongest subtropical deserts where faunal had not considered important. Our results highlight need consider animal size when exploring dependence decomposition, disproportionately large role regulating drylands. new realization critical for understanding element cycling face warming aridification.

Language: Английский

Citations

17