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Increased Amazon carbon emissions mainly from decline in law enforcement
The Amazon forest carbon sink is declining, mainly as a result of land-use and climate change1–4. Here we investigate how changes in law enforcement of environmental protection policies may have affected the Amaz...
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Open AccessTree-ring oxygen isotopes record a decrease in Amazon dry season rainfall over the past 40 years
Extant climate observations suggest the dry season over large parts of the Amazon Basin has become longer and drier over recent decades. However, such possible intensification of the Amazon dry season and its ...
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Open AccessAmazon methane budget derived from multi-year airborne observations highlights regional variations in emissions
Atmospheric methane concentrations were nearly constant between 1999 and 2006, but have been rising since by an average of ~8 ppb per year. Increases in wetland emissions, the largest natural global methane so...
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Amazonia as a carbon source linked to deforestation and climate change
Amazonia hosts the Earth’s largest tropical forests and has been shown to be an important carbon sink over recent decades1–3. This carbon sink seems to be in decline, however, as a result of factors such as defor...
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Open AccessLarge apparent growth increases in boreal forests inferred from tree-rings are an artefact of sampling biases
Tree rings are thought to be a powerful tool to reconstruct historical growth changes and have been widely used to assess tree responses to global warming. Demographic inferences suggest, however, that typical...
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Open Access21st Century drought-related fires counteract the decline of Amazon deforestation carbon emissions
Tropical carbon emissions are largely derived from direct forest clearing processes. Yet, emissions from drought-induced forest fires are, usually, not included in national-level carbon emission inventories. H...
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Open AccessDoes Cedrela always form annual rings? Testing ring periodicity across South America using radiocarbon dating
Radiocarbon dating shows that Cedrela trees from Bolivia, Ecuador and Venezuela form one ring per year but Cedrela trees ...
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Predicting species dominance shifts across elevation gradients in mountain forests in Greece under a warmer and drier climate
The Mediterranean Basin is expected to face warmer and drier conditions in the future, following projected increases in temperature and declines in precipitation. The aim of this study is to explore how forest...
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Open AccessHyperdominance in Amazonian forest carbon cycling
While Amazonian forests are extraordinarily diverse, the abundance of trees is skewed strongly towards relatively few ‘hyperdominant’ species. In addition to their diversity, Amazonian trees are a key componen...
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Correction: Corrigendum: Size and frequency of natural forest disturbances and the Amazon forest carbon balance
Nature Communications 5: Article number: 3434 (2014); Published: 18 March 2014; Updated: 2 April 2015 The original version of this Article contained an error in the computation of the total basin-wide mass los...
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Steps for success of OCO-2
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Open AccessSize and frequency of natural forest disturbances and the Amazon forest carbon balance
Forest inventory studies in the Amazon indicate a large terrestrial carbon sink. However, field plots may fail to represent forest mortality processes at landscape-scales of tropical forests. Here we character...
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Increasing carbon storage in intact African tropical forests
Tropical forests store and process large amounts of carbon, affecting the amount of CO2 in the atmosphere, and hence the rate and magnitude of climate change. The extent of the contribution of tropical forests in...
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Towards robust regional estimates of CO2 sources and sinks using atmospheric transport models
Information about regional carbon sources and sinks can be derived from variations in observed atmospheric CO2 concentrations via inverse modelling with atmospheric tracer transport models. A consensus has not ye...
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Article
Enhanced mixing in narrows: A case study at the Mainau sill (Lake Constance)
Previous work has identified bottom currents as a significant source of turbulence in stratified lakes. Sills may therefore be a major factor determining overall turbulent diapycnal (vertical) exchange in lak...
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A diffusion model for the development of a boundary layer in lakes
The development of a boundary layer characterised by very low gradients in temperature and salinity near the bottom boundary of a lake does not necessarily imply an increase in diapycnal mixing within the boun...
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Modeling the effects of anterior chamber fluid viscosities on intraocular pressure following glaucoma filtering surgery
• Background: Hypotonia, flat anterior chamber, and choroidal effusion are not infrequent and undesirable consequences of glaucoma filtering surgery. Methods developed so far to prevent or combat these complic...
