Fine root dynamics across pantropical rainforest ecosystems DOI
Walter Huaraca Huasco, Terhi Riutta,

Cécile A. J. Girardin

et al.

Global Change Biology, Journal Year: 2021, Volume and Issue: 27(15), P. 3657 - 3680

Published: May 13, 2021

Abstract Fine roots constitute a significant component of the net primary productivity (NPP) forest ecosystems but are much less studied than aboveground NPP. Comparisons across sites and regions also hampered by inconsistent methodologies, especially in tropical areas. Here, we present novel dataset fine root biomass, productivity, residence time, allocation old‐growth rainforest worldwide, measured using consistent methods, examine how these variables related to consistently determined soil climatic characteristics. Our pantropical spans intensive monitoring plots lowland (wet, semi‐deciduous, deciduous) montane forests South America, Africa, Southeast Asia ( n = 47). Large spatial variation dynamics was observed types. In forests, found strong positive linear relationship between sand content, this even stronger when considered fractional total NPP roots, demonstrating that understanding adds explanatory power time function multiple factors: pH, maximum water deficit, with longest times acidic, sandy, water‐stressed soils. on other hand, different set relationships prevailed, highlighting very nature biomes. Root mean annual temperature, nitrogen content lastly decreasing P increased roots. contrast lowlands, environmental conditions were better predictor for suggesting is particularly driver mountain regions.

Language: Английский

Taking the pulse of Earth's tropical forests using networks of highly distributed plots DOI Creative Commons

ForestPlots.net,

Cecilia Blundo, Julieta Carilla

et al.

Biological Conservation, Journal Year: 2021, Volume and Issue: 260, P. 108849 - 108849

Published: May 24, 2021

Language: Английский

Citations

134
The other side of tropical forest drought: do shallow water table regions of Amazonia act as large‐scale hydrological refugia from drought? DOI
Flávia R. C. Costa, Juliana Schietti, Scott C. Stark

et al.

New Phytologist, Journal Year: 2022, Volume and Issue: 237(3), P. 714 - 733

Published: Jan. 17, 2022

Summary Tropical forest function is of global significance to climate change responses, and critically determined by water availability patterns. Groundwater tightly related soil through the table depth (WT), but historically neglected in ecological studies. Shallow WT forests (WT < 5 m) are underrepresented research networks absent eddy flux measurements, although they represent c . 50% Amazon expected respond differently global‐change‐related droughts. We review patterns consequences for plants, emerging results, advance a conceptual model integrating environment trait distributions predict effects. have distinct species composition, with more resource‐acquisitive hydrologically vulnerable trees, shorter canopies lower biomass than deep forests. During ‘normal’ climatic years, shallow higher mortality productivity forests, during moderate droughts buffered increases. However, severe drought, may be sensitive due roots drought‐intolerant traits. Our evidence supports hypothesis being resilient challenging prevailing view widespread negative effects on Amazonian that ignores gradients, predicts could collapse under very strong

Language: Английский

Citations

91
A guide to using species trait data in conservation DOI Creative Commons
Rachael V. Gallagher, Nathalie Butt, Alexandra J. R. Carthey

et al.

One Earth, Journal Year: 2021, Volume and Issue: 4(7), P. 927 - 936

Published: July 1, 2021

Language: Английский

Citations

69
Forest regeneration within Earth system models: current process representations and ways forward DOI Creative Commons
Adam Hanbury‐Brown, Rachel Ward, Lara M. Kueppers

et al.

New Phytologist, Journal Year: 2022, Volume and Issue: 235(1), P. 20 - 40

Published: April 1, 2022

Summary Earth system models must predict forest responses to global change in order simulate future climate, hydrology, and ecosystem dynamics. These are increasingly adopting vegetation demographic approaches that explicitly represent tree growth, mortality, recruitment, enabling advances the projection of vulnerability resilience, as well evaluation with field data. To date, simulation regeneration processes has received far less attention than affect growth spite their critical role maintaining structure, facilitating turnover composition over space time, recovery from disturbance, regulating climate‐driven range shifts. Our review process representations within current reveals need improve parameter values algorithms for reproductive allocation, dispersal, seed survival germination, environmental filtering seedling layer, strategies adapted wind, fire, anthropogenic disturbance regimes. improvements require synthesis existing data, specific data‐collection protocols, novel model compatible global‐scale simulations. Vegetation offer opportunity more fully integrate ecological understanding into prediction; be a part effort.

Language: Английский

Citations

49
Functional susceptibility of tropical forests to climate change DOI
Jesús Aguirre‐Gutiérrez, Érika Berenguer, Imma Oliveras

et al.

Nature Ecology & Evolution, Journal Year: 2022, Volume and Issue: 6(7), P. 878 - 889

Published: May 16, 2022

Language: Английский

Citations

40
Increasing calcium scarcity along Afrotropical forest succession DOI
Marijn Bauters, Ivan A. Janssens, Daniel Wasner

et al.

Nature Ecology & Evolution, Journal Year: 2022, Volume and Issue: 6(8), P. 1122 - 1131

Published: July 4, 2022

Language: Английский

Citations

39
Logged tropical forests have amplified and diverse ecosystem energetics DOI Creative Commons
Yadvinder Malhi, Terhi Riutta, Oliver R. Wearn

et al.

Nature, Journal Year: 2022, Volume and Issue: 612(7941), P. 707 - 713

Published: Dec. 14, 2022

Abstract Old-growth tropical forests are widely recognized as being immensely important for their biodiversity and high biomass 1 . Conversely, logged usually characterized degraded ecosystems 2 However, whether logging results in a degradation ecosystem functions is less clear: shifts the strength resilience of key processes large suites species have rarely been assessed an ecologically integrated quantitative framework. Here we adopt energetics lens to gain new insight into impacts forest disturbance on integrative aspect ecological function: food pathways community structure birds mammals. We focus gradient spanning old-growth oil palm plantations Borneo. In there 2.5-fold increase total resource consumption by both mammals compared that forests, probably driven greater accessibility vegetation palatability. Most principal energetic maintain diversity redundancy, implying maintained resilience. Conversion plantation collapse most pathways. Far from ecosystems, even heavily can be vibrant diverse with enhanced levels function.

Language: Английский

Citations

39
Tropical forests post-logging are a persistent net carbon source to the atmosphere DOI Creative Commons
Maria Mills, Yadvinder Malhi, Robert M. Ewers

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(3)

Published: Jan. 9, 2023

Logged and structurally degraded tropical forests are fast becoming one of the most prevalent land-use types throughout tropics routinely assumed to be a net carbon sink because they experience rapid rates tree regrowth. Yet this assumption is based on forest biomass inventories that record stock recovery but fail account for simultaneous losses from soil necromass. Here, we used plots an eddy covariance tower quantify partition ecosystem CO 2 exchange in Malaysian Borneo, region hot spot deforestation degradation. Our data represent complete budget measured logging event subsequent found constitute substantial persistent source. Consistent with existing literature, our study showed significantly greater woody gain across moderately heavily logged compared unlogged forests, was counteracted by much larger organic matter deadwood forests. We estimate average source 1.75 ± 0.94 Mg C ha −1 yr within 5.23 1.23 − 1 unsustainably severely plots, emissions continuing at these least one-decade post-logging. directly contradict default recovering sinks, implying amount being sequestered world’s may considerably lower than currently estimated.

Language: Английский

Citations

38
Unraveling the enigma of NPP variation in Chinese vegetation ecosystems: The interplay of climate change and land use change DOI
Yong Xu,

Yun-Gui Lu,

Bin Zou

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169023 - 169023

Published: Dec. 1, 2023

Language: Английский

Citations

23
Soil Organic Carbon Estimation via Remote Sensing and Machine Learning Techniques: Global Topic Modeling and Research Trend Exploration DOI Creative Commons
Tong Li, Lizhen Cui, Yu Wu

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(17), P. 3168 - 3168

Published: Aug. 27, 2024

Understanding and monitoring soil organic carbon (SOC) stocks is crucial for ecosystem cycling, services, addressing global environmental challenges. This study employs the BERTopic model bibliometric trend analysis exploration to comprehensively analyze SOC estimates. BERTopic, a topic modeling technique based on BERT (bidirectional encoder representatives from transformers), integrates recent advances in natural language processing. The research analyzed 1761 papers remote sensing (RS), addition 490 related machine learning (ML) techniques. identified nine themes estimation using RS, emphasizing spectral prediction models, cycle dynamics, agricultural impacts SOC. In contrast, literature RS ML it five thematic clusters: spatial forestry analysis, hyperspectral deep learning, multitemporal imaging of farmland SOC, platforms (Sentinel-2 synthetic aperture radar, SAR). From 1991 2023, has evolved basic mapping topics like sequestration with Sentinel-2A big data. summary, this traces historical growth evolution research, identifying synergies between focusing advanced These findings are critical assessments policy formulation.

Language: Английский

Citations

11