Hanging by a thread? Forests and drought

Science, Год журнала: 2020, Номер 368(6488), С. 261 - 266

Опубликована: Апрель 16, 2020

Trees are the living foundations on which most terrestrial biodiversity is built. Central to success of trees their woody bodies, connect elevated photosynthetic canopies with essential belowground activities water and nutrient acquisition. The slow construction these carbon-dense, skeletons leads a generation time, leaving forests highly susceptible rapid changes in climate. Other long-lived, sessile organisms such as corals appear be poorly equipped survive changes, raises questions about vulnerability contemporary future climate change. emerging view that, similar corals, tree species have rather inflexible damage thresholds, particularly terms stress, especially concerning. This Review examines recent progress our understanding how looks for growing hotter drier atmosphere.

Язык: Английский

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The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China

Agricultural and Forest Meteorology, Год журнала: 2019, Номер 269-270, С. 239 - 248

Опубликована: Фев. 16, 2019

Язык: Английский

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Ghosts of the past: how drought legacy effects shape forest functioning and carbon cycling

Ecology Letters, Год журнала: 2020, Номер 23(5), С. 891 - 901

Опубликована: Март 10, 2020

Multi-year lags in tree drought recovery, termed 'drought legacy effects', are important for understanding the impacts of on forest ecosystems, including carbon (C) cycle feedbacks to climate change. Despite ubiquity large uncertainties remain regarding mechanistic basis effects and their importance C cycle. In this review, we identify approaches used study effects, from rings whole forests. We then discuss key knowledge gaps pertaining causes how various mechanisms that may contribute these recovery could have contrasting implications Furthermore, conduct a novel data synthesis find differ drastically both size length across US depending if they identified versus gross primary productivity. Finally, highlight promising future research improve our capacity model predict impact health. emphasise holistic view - tissues forests will advance stimulate efforts investigate via experimental, observational modelling approaches.

Язык: Английский

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Drought effects on soil carbon and nitrogen dynamics in global natural ecosystems

Earth-Science Reviews, Год журнала: 2020, Номер 214, С. 103501 - 103501

Опубликована: Дек. 30, 2020

Язык: Английский

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Diverse responses of vegetation growth to meteorological drought across climate zones and land biomes in northern China from 1981 to 2014

Agricultural and Forest Meteorology, Год журнала: 2018, Номер 262, С. 1 - 13

Опубликована: Июнь 28, 2018

Язык: Английский

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Drought, Heat, and the Carbon Cycle: a Review

Current Climate Change Reports, Год журнала: 2018, Номер 4(3), С. 266 - 286

Опубликована: Июнь 14, 2018

Weather and climate extremes substantially affect global- regional-scale carbon (C) cycling, thus spatially or temporally extended climatic extreme events jeopardize terrestrial ecosystem sequestration. We illustrate the relevance of drought and/or heat (“DHE”) for cycle highlight underlying concepts complex impact mechanisms. review recent results, discuss current research needs emerging topics. Our covers topics critical to understanding, attributing predicting effects DHE on cycle: (1) ecophysiological mechanisms mediating factors, (2) role timing, duration dynamical through which impacts cycling are either attenuated enhanced, (3) large-scale atmospheric conditions under likely unfold cycle. Recent shows need view these in a broader spatial temporal perspective that extends assessments beyond local concurrent C DHE. Novel data streams, model (ensemble) simulations, analyses allow better understand not only response their proximate drivers (drought, heat, etc.) but also them changes conditions. These attribution-type increasingly address disentangle various sequences interactions impacts, including compensating amplifying cycling.

Язык: Английский

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Temporal trade-off between gymnosperm resistance and resilience increases forest sensitivity to extreme drought

Nature Ecology & Evolution, Год журнала: 2020, Номер 4(8), С. 1075 - 1083

Опубликована: Июнь 15, 2020

Язык: Английский

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Multi-sensor remote sensing for drought characterization: current status, opportunities and a roadmap for the future

Remote Sensing of Environment, Год журнала: 2021, Номер 256, С. 112313 - 112313

Опубликована: Фев. 6, 2021

Язык: Английский

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Linking drought legacy effects across scales: From leaves to tree rings to ecosystems

Global Change Biology, Год журнала: 2019, Номер 25(9), С. 2978 - 2992

Опубликована: Май 27, 2019

Abstract Severe drought can cause lagged effects on tree physiology that negatively impact forest functioning for years. These “drought legacy effects” have been widely documented in tree‐ring records and could important implications our understanding of broader scale carbon cycling. However, increments may be decoupled from ecosystem fluxes due to (a) postdrought alterations allocation patterns; (b) temporal asynchrony between radial growth uptake; (c) dendrochronological sampling biases. In order link rings whole forests, we leveraged a rich dataset Midwestern US was severely impacted by 2012. At this site, compiled records, leaf‐level gas exchange, eddy flux measurements, dendrometer band data, satellite remote sensing estimates greenness leaf area before, during, after the 2012 drought. After accounting relative abundance species stand, estimate led ~10% reductions width year following severe Despite stand‐scale reduction growth, found photosynthesis, gross primary productivity (GPP), vegetation were not suppressed Neither uptake nor biases explain observations but GPP. Instead, elevated photosynthesis co‐occurred with reduced early 2013, indicating resources allocated away conjunction upregulation repair canopy damage. Collectively, results indicate observed other processes, an mechanism decouples signals

Язык: Английский

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Drought legacies and ecosystem responses to subsequent drought

Global Change Biology, Год журнала: 2022, Номер 28(17), С. 5086 - 5103

Опубликована: Май 24, 2022

Climate change is expected to increase the frequency and severity of droughts. These events, which can cause significant perturbations terrestrial ecosystems potentially long-term impacts on ecosystem structure functioning after drought has subsided are often called 'drought legacies'. While immediate effects have been comparatively well characterized, our broader understanding legacies just emerging. Drought relate all aspects functioning, involving changes at species community scale as alterations soil properties. This consequences for responses subsequent drought. Here, we synthesize current knowledge underlying mechanisms. We highlight relevance legacy duration different processes using examples carbon cycling composition. present hypotheses characterizing how intrinsic (i.e. biotic abiotic properties processes) extrinsic timing, severity, frequency) factors could alter resilience trajectories under scenarios recurrent events. propose ways improving their implications needed assess longer-term droughts functioning.

Язык: Английский

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