Featured
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Vast CO2 release from Australian fires in 2019–2020 constrained by satellite
The amount of carbon dioxide released by the Australian wildfires of 2019–2020 is uncertain, but is estimated here using satellite observations of carbon monoxide to be more than twice the amount suggested by fire inventories.
- Ivar R. van der Velde
- , Guido R. van der Werf
- & Ilse Aben
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Article |
Environmental performance of blue foods
A range of environmental stressors are estimated for farmed and wild capture blue foods, including bivalves, seaweed, crustaceans and finfish, with the potential to inform more sustainable diets.
- Jessica A. Gephart
- , Patrik J. G. Henriksson
- & Max Troell
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Article |
Precise date for the Laacher See eruption synchronizes the Younger Dryas
A revised date for the Laacher See eruption using measurements of subfossil trees shifts the chronology of European varved lakes relative to the Greenland ice core record, synchronizing the onset of the Younger Dryas across the North Atlantic–European sector.
- Frederick Reinig
- , Lukas Wacker
- & Ulf Büntgen
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Matters Arising |
Concerns about reported harvests in European forests
- Marc Palahí
- , Rubén Valbuena
- & Gert-Jan Nabuurs
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Article |
Overriding water table control on managed peatland greenhouse gas emissions
Halving average drainage depths in agricultural peatlands could reduce greenhouse gas emissions by the equivalent of 1 per cent of all anthropogenic emissions.
- C. D. Evans
- , M. Peacock
- & R. Morrison
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Review Article |
A 20-year retrospective review of global aquaculture
The volume of global aquaculture production has tripled since 2000 with positive trends in environmental performance, but the sector faces mounting challenges including pathogen management, pollution, climate change, and increasing dependence on land-based resource systems.
- Rosamond L. Naylor
- , Ronald W. Hardy
- & Max Troell
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Article |
Human alteration of global surface water storage variability
Data from the ICESat-2 satellite quantifying the variability of water levels in natural and human-managed water bodies show that a disproportionate majority of global water storage variability occurs in human-managed reservoirs.
- Sarah W. Cooley
- , Jonathan C. Ryan
- & Laurence C. Smith
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Matters Arising |
Concerns about phytoplankton bloom trends in global lakes
- Lian Feng
- , Yanhui Dai
- & Chunmiao Zheng
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Article |
A decline in emissions of CFC-11 and related chemicals from eastern China
Atmospheric data and chemical-transport modelling show that CFC-11 emissions from eastern China have again decreased, after increasing in 2013–2017, and a delay in ozone-layer recovery has probably been avoided.
- Sunyoung Park
- , Luke M. Western
- & Matthew Rigby
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Article |
A decline in global CFC-11 emissions during 2018−2019
Atmospheric concentration measurements at remote sites around the world reveal an accelerated decline in the global mean CFC-11 concentration during 2018 and 2019, reversing recent trends and building confidence in the timely recovery of the stratospheric ozone layer.
- Stephen A. Montzka
- , Geoffrey S. Dutton
- & Christina Theodoridi
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Article |
Sources of particulate-matter air pollution and its oxidative potential in Europe
Observations and air-quality modelling reveal that the sources of particulate matter and oxidative potential in Europe are different, implying that reducing mass concentrations of particulate matter alone may not reduce oxidative potential.
- Kaspar R. Daellenbach
- , Gaëlle Uzu
- & André S. H. Prévôt
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Article |
Environmental drivers of megafauna and hominin extinction in Southeast Asia
Stable isotope data for Southeast Asian mammals across the Quaternary period shed light on environmental change from the Early Pleistocene to the Holocene epoch, contextualizing hominin evolution and megafauna extinction in the region.
- Julien Louys
- & Patrick Roberts
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Article |
Bending the curve of terrestrial biodiversity needs an integrated strategy
To promote the recovery of the currently declining global trends in terrestrial biodiversity, increases in both the extent of land under conservation management and the sustainability of the global food system from farm to fork are required.
- David Leclère
- , Michael Obersteiner
- & Lucy Young
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Article |
Antarctica’s wilderness fails to capture continent’s biodiversity
Historical records reveal that although 99.6% of Antarctica is defined as wilderness, areas undisturbed by humans comprise less than 32%, largely in regions of low biodiversity.
- Rachel I. Leihy
- , Bernard W. T. Coetzee
- & Steven L. Chown
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Article |
Abrupt increase in harvested forest area over Europe after 2015
Fine-scale satellite data are used to quantify forest harvest rates in 26 European countries, finding an increase in harvested forest area of 49% and an increase in biomass loss of 69% between 2011–2015 and 2016–2018.
- Guido Ceccherini
- , Gregory Duveiller
- & Alessandro Cescatti
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Matters Arising |
Streamflow response to forest management
- James W. Kirchner
- , Wouter R. Berghuijs
- & Donna M. Rizzo
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Article |
Premature mortality related to United States cross-state air pollution
This analysis of the exchange of air pollution amongst the contiguous United States finds that, on average, around half of the early deaths caused by a state’s air pollution occurs outside that state, with different contributions by different emission sectors and chemical species.
- Irene C. Dedoussi
- , Sebastian D. Eastham
- & Steven R. H. Barrett
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Article |
Global-scale human impact on delta morphology has led to net land area gain
A global study of river deltas shows a net increase in delta area by about 54 km2 yr−1 over the past 30 years, in part due to deforestation-induced sediment delivery increase.
- J. H. Nienhuis
- , A. D. Ashton
- & T. E. Törnqvist
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Article |
Large hydropower and water-storage potential in future glacier-free basins
Glacierized regions that are projected to become ice-free in this century could provide substantial water storage and hydroelectric power, according to this worldwide theoretical assessment.
- Daniel Farinotti
- , Vanessa Round
- & Harry Zekollari
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Perspective |
Anatomy and resilience of the global production ecosystem
This Perspective examines the global production ecosystem through the lenses of connectivity, diversity and feedback, and proposes measures that will increase its stability and sustainability.
- M. Nyström
- , J.-B. Jouffray
- & C. Folke
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Letter |
Environmental flow limits to global groundwater pumping
Estimates for when critical environmental streamflow limits will be reached—with potentially devastating economic and environmental effects—are obtained using a global model that links groundwater pumping with the groundwater flow to rivers.
- Inge E. M. de Graaf
- , Tom Gleeson
- & Marc F. P. Bierkens
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Article |
Global spatial risk assessment of sharks under the footprint of fisheries
A global dataset of the satellite-tracked movements of pelagic sharks and fishing fleets show that sharks—and, in particular, commercially important species—have limited spatial refuge from fishing effort.
- Nuno Queiroz
- , Nicolas E. Humphries
- & David W. Sims
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Letter |
Isotopic constraint on the twentieth-century increase in tropospheric ozone
Isotope data from polar firn and ice are used to constrain the increase in tropospheric ozone between 1850 and 2005 ad.
- Laurence Y. Yeung
- , Lee. T. Murray
- & Jérôme Chappellaz
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Letter |
Managing nitrogen to restore water quality in China
Estimates of spatial patterns of nitrogen discharge into water bodies across China between 1955 and 2014 show that current discharge rates are almost three times the acceptable threshold, and ways to restore a clean water environment are suggested.
- ChaoQing Yu
- , Xiao Huang
- & James Taylor
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Letter |
Assessing the efficiency of changes in land use for mitigating climate change
Evaluation of the efficiency of land-use changes and their effect on global carbon storage shows that several land-use and consumption choices relevant to climate policy have greater implications than previously thought.
- Timothy D. Searchinger
- , Stefan Wirsenius
- & Patrice Dumas
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Article |
Options for keeping the food system within environmental limits
A global model finds that the environmental impacts of the food system could increase by 60–90% by 2050, and that dietary changes, improvements in technologies and management, and reductions in food loss and waste will all be needed to mitigate these impacts.
- Marco Springmann
- , Michael Clark
- & Walter Willett
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Letter |
Future response of global coastal wetlands to sea-level rise
A global modelling approach shows that in response to rises in global sea level, gains of up to 60% in coastal wetland areas are possible, if appropriate coastal management solutions are developed to help support wetland resilience.
- Mark Schuerch
- , Tom Spencer
- & Sally Brown
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Letter |
Ancient herders enriched and restructured African grasslands
Isotopic and sedimentary analyses of soils at Pastoral Neolithic archaeological sites in Kenya demonstrate the long-term influence of nutrient enrichment on savannah environments that has accompanied pastoralist settlement over the past three millennia.
- Fiona Marshall
- , Rachel E. B. Reid
- & Stanley H. Ambrose
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Letter |
Global land change from 1982 to 2016
Satellite data for the period 1982–2016 reveal changes in land use and land cover at global and regional scales that reflect patterns of land change indicative of a human-dominated Earth system.
- Xiao-Peng Song
- , Matthew C. Hansen
- & John R. Townshend
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Perspective |
China’s response to a national land-system sustainability emergency
China has addressed widespread rural poverty and environmental degradation head-on via unprecedented investment in sixteen large-scale sustainability programmes.
- Brett A. Bryan
- , Lei Gao
- & Xiangyang Hou
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Perspective |
Choosing the future of Antarctica
The future of Antarctica and the Southern Ocean by 2070 is described under two scenarios, one in which action is taken to limit greenhouse gas emissions, and one in which no action is taken.
- S. R. Rintoul
- , S. L. Chown
- & J. C. Xavier
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Letter |
An unexpected and persistent increase in global emissions of ozone-depleting CFC-11
Atmospheric CFC-11 concentrations have been declining less rapidly since 2012; evidence suggests that this finding is explained by an increase in the emission of CFC-11during these years.
- Stephen A. Montzka
- , Geoff S. Dutton
- & James W. Elkins
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Letter |
Carbon dioxide addition to coral reef waters suppresses net community calcification
In situ carbon dioxide enrichment experiments show that ocean acidification poses a threat to coral reefs by reducing the saturation state of aragonite and the concentration of carbonate ions and that this impairs community calcification.
- Rebecca Albright
- , Yuichiro Takeshita
- & Ken Caldeira
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Letter |
Pursuing sustainable productivity with millions of smallholder farmers
Millions of Chinese smallholder farmers were persuaded to adopt enhanced management practices, which led to a greater yield, reduced nitrogen fertilizer use and improved environmental performance throughout China.
- Zhenling Cui
- , Hongyan Zhang
- & Zhengxia Dou
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Letter |
Successful conservation of global waterbird populations depends on effective governance
Statistical modelling of global survey datasets of waterbirds as an indicator taxon for biodiversity changes in wetland ecosystems demonstrates that effective governance is the strongest predictor of species abundance increases and conservation benefits.
- Tatsuya Amano
- , Tamás Székely
- & William J. Sutherland
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Letter |
Global patterns of drought recovery
A global analysis of gross primary productivity reveals that drought recovery is driven by climate and carbon cycling, with recovery longest in the tropics and high northern latitudes, and with impacts increasing over the twentieth century.
- Christopher R. Schwalm
- , William R. L. Anderegg
- & Hanqin Tian
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Letter |
Global forest loss disproportionately erodes biodiversity in intact landscapes
Deforestation increases the odds of a species being threatened by extinction, and this effect is disproportionately strong in relatively intact landscapes, suggesting that efforts are needed to protect intact forest landscapes and prevent a new wave of extinctions.
- Matthew G. Betts
- , Christopher Wolf
- & Taal Levi
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Article |
Strong constraints on aerosol–cloud interactions from volcanic eruptions
Investigations of an Icelandic volcanic eruption confirm that sulfate aerosols caused a discernible yet transient brightening effect, as predicted, but their effect on the liquid water path was unexpectedly negligible.
- Florent F. Malavelle
- , Jim M. Haywood
- & Thorvaldur Thordarson
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Perspective |
Damming the rivers of the Amazon basin
The current and expected environmental consequences of built dams and proposed dam constructions in the Amazon basin are explored with the help of a Dam Environmental Vulnerability Index.
- Edgardo M. Latrubesse
- , Eugenio Y. Arima
- & Jose C. Stevaux
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Letter |
Large conservation gains possible for global biodiversity facets
Expanding protected areas for ecological conservation by just 5% has the potential to markedly increase terrestrial biodiversity protection.
- Laura J. Pollock
- , Wilfried Thuiller
- & Walter Jetz
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Letter |
Impacts and mitigation of excess diesel-related NOx emissions in 11 major vehicle markets
Across markets accounting for 80 per cent of global diesel vehicle sales, more than a third of diesel nitrogen oxide emissions are in excess of certification limits, causing many deaths.
- Susan C. Anenberg
- , Joshua Miller
- & Chris Heyes
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Letter |
Transboundary health impacts of transported global air pollution and international trade
The transboundary health impacts of air pollution associated with the international trade of goods and services are greater than those associated with long-distance atmospheric pollutant transport.
- Qiang Zhang
- , Xujia Jiang
- & Dabo Guan
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Letter |
Groundwater depletion embedded in international food trade
Global food consumption drives irrigation for crops, which depletes aquifers in some regions; here we quantify the volumes of groundwater depletion associated with global food production and international trade.
- Carole Dalin
- , Yoshihide Wada
- & Michael J. Puma
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Article |
Capacity shortfalls hinder the performance of marine protected areas globally
Although 71% of marine protected areas are benefiting fish populations, their effects are highly variable, with staff capacity proving to be the most important explanatory variable.
- David A. Gill
- , Michael B. Mascia
- & Helen E. Fox
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Letter |
Upward revision of global fossil fuel methane emissions based on isotope database
Revisions in isotopic source signatures reveal that global total fossil fuel methane emissions from industry plus natural geological seepage are much larger than thought.
- Stefan Schwietzke
- , Owen A. Sherwood
- & Pieter P. Tans
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Letter |
Projected land photosynthesis constrained by changes in the seasonal cycle of atmospheric CO2
Analysis of observations and model projections provides large-scale emergent constraints on the extent of CO2 fertilization, with estimated increases in gross primary productivity for both high-latitude and extratropical ecosystems under elevated atmospheric CO2 concentrations.
- Sabrina Wenzel
- , Peter M. Cox
- & Pierre Friedlingstein
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Article |
Postglacial viability and colonization in North America’s ice-free corridor
During much of the last ice age, continental ice sheets prevented humans from migrating into North America from Siberia; an environmental reconstruction of the corridor that opened up between the Cordilleran and Laurentide ice sheets reveals that it would have been inhospitable to the initial colonizing humans, who therefore probably entered North America by a different route.
- Mikkel W. Pedersen
- , Anthony Ruter
- & Eske Willerslev
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Letter |
Bright spots among the world’s coral reefs
Data from over 2,500 reefs worldwide is used to identify 15 bright spots—sites where reef biomass is significantly higher than expected—and surveys of local experts in these areas suggest that strong sociocultural institutions and high levels of local engagement are among the factors supporting higher fish biomass.
- Joshua E. Cinner
- , Cindy Huchery
- & David Mouillot
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Letter |
Oil sands operations as a large source of secondary organic aerosols
The evaporation and atmospheric oxidation of low-volatility organic vapours from mined oil sands material is shown to be responsible for a large amount of secondary organic aerosol mass—which affects air quality and climate change—observed during airborne measurements in Canada.
- John Liggio
- , Shao-Meng Li
- & Drew R. Gentner