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Courses
- MMBMathematical Models in Biology
- GCGlobal Change
- MMIBMath Models In Biology
- REEResearch in Ecology and Evolution
- MBGCMicrobial Biogeochemistry and Global Change
Grants
- Collaborative Research: Cascade "Ecohydromics" in the Amazonian Headwater System
Principal Investigator (PI)
2022
$252.5K
Active - Gatekeepers of Arctic Carbon Loss: Landscape-Scale Metabolites-to-Ecosystems Profiling to Mechanistically Map Climate Feedbacks
Co-Investigator (COI)
2022
$167.4K
Active - Collaborative Research: GCR: Growing a New Science of Landscape Terraformation: The Convergence of Rock, Fluids, and Life to form Complex Ecosystems Across Scales
Principal Investigator (PI)
2021
$1.2M
Active - Trees as Conduits for Connecting Belowground Microbial Processes to Aboveground CH4 Emissions at the Terrestrial-Aquatic Interface
Principal Investigator (PI)
2021
$856.1K
Active - NRT-URoL: BRIDGES - Building Resources for InterDisciplinary training in Genomic and Ecosystem Sciences
Principal Investigator (PI)
2020
$3.0M
Active - BII-Implementation: The EMERGE Institute: Identifying Emergent Ecosytem Responses Through Genes-to-Ecosystems Integration
Principal Investigator (PI)
2020
$1.5M
Active - Collaborative Research: The Other Side of Tropical Forest Drought: Do Shallow Water Table Regions of Amazonia Act as Large-scale Hydrological Refugia From Drought?
Principal Investigator (PI)
2020
$288.6K
Active - The Other Side of Drought: Why Do Some Amazon Forests "Green-Up" During Droughts While Others Do Not? Integrating Multisatellite Remote Sensing with Field Observations to Reveal the Mechanistic
Principal Investigator (PI)
2019
$135.0K
Active - Collaborative Research: Are Amazon Forest Trees Source or Sink Limited? Mapping Hydraulic Traits to Carbon Allocation Strategies to Decipher Forest Function During Drought
Principal Investigator (PI)
2018
$1.2M
Active - Testing Satellite-Based Scaling of Tropical Forest Photosynthesis with a New Network of Cameras and Fluorescence Spectrometers in Amazonia
Principal Investigator (PI)
2017
$1.1M
News
- Life on LEO: Plants to be Added to the Landscape Evolution Observatory at Biosphere 2
2021
- Rainforest at Biosphere 2 Offers Glimpse into Future of the Amazon
2020
- $3M Grant Helps Students Bridge Sciences to Solve the World's Biggest Problems
2020
- Seeing the Forest Through the Lidar Lens
2019
- Scientist Examines the 'Lungs of the Planet' in Amazon Region
2017
- Seasonal Changes in Amazon Photosynthesis Explained
2016
- New Information From Watching a Forest Breathe
2016
- 'Microbial Pac-Man' May Soon Hit 'Game Over'
2016
- Little Big Discovery: Microbe Seen as Key to Climate Change
2014
- Interactions of Earth’s Smallest Players Have Global Impact
2014
- Discovery of Microbe Hiding in Permafrost Raises Concerns About Future
2014
- The Failing Freezer: How Soil Microbes Affect Global Climate
2013
- Music Under the Dome
2009
- Machado and UA's Fan Infuse Biosphere 2 Science With Music
2009
- Biosphere 2 Will Hold Two-Part 'Survival of the Sphere' Event on UA Campus
2009
- Biosphere 2 Opens Rain Forest Experiment to the Public
2008
- Four UA Profs Part of U.S. Supreme Court Case on Climate Change
2007
- The University of Arizona Launches Major Scientific Research Initiative at Biosphere 2
2007
- UA Scientists Receive $2.5 Million to Study Amazon Forests and Climate Change
2007
Publications (167)
- Author Correction: The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data (Scientific Data, (2020), 7, 1, (225), 10.1038/s41597-020-0534-3)
2021
- How deregulation, drought and increasing fire impact Amazonian biodiversity
2021
- Calculating canopy stomatal conductance from eddy covariance measurements, in light of the energy budget closure problem
2021
- Importance of hydraulic strategy trade-offs in structuring response of canopy trees to extreme drought in central Amazon
2021
- A genomic catalog of Earth’s microbiomes
2021
- Ecology and molecular targets of hypermutation in the global microbiome
2021
- Functional capacities of microbial communities to carry out large scale geochemical processes are maintained during ex situ anaerobic incubation
2021
- Understanding water and energy fluxes in the Amazonia: Lessons from an observation-model intercomparison
2021
- A new field instrument for leaf volatiles reveals an unexpected vertical profile of isoprenoid emission capacities in a tropical forest
2021
- Author Correction: A genomic catalog of Earth’s microbiomes (Nature Biotechnology, (2021), 39, 4, (499-509), 10.1038/s41587-020-0718-6)
2021
- Quantifying the inhibitory impact of soluble phenolics on carbon mineralization from Sphagnum-rich peatlands
2021
- Controls on Soil Organic Matter Degradation and Subsequent Greenhouse Gas Emissions Across a Permafrost Thaw Gradient in Northern Sweden
2020
- Diverse arctic lake sediment microbiota shape methane emission temperature sensitivity
2020
- Hysteretic temperature sensitivity of wetland CH4 fluxes explained by substrate availability and microbial activity
2020
- Reframing tropical savannization: linking changes in canopy structure to energy balance alterations that impact climate
2020
- Rainforest-to-pasture conversion stimulates soil methanogenesis across the Brazilian Amazon
2020
- Ecology and molecular targets of hypermutation in the global microbiome.
2020
- The pantropical response of soil moisture to El Niño
2020
- Empirical evidence for resilience of tropical forest photosynthesis in a warmer world
2020
- Impacts of Degradation on Water, Energy, and Carbon Cycling of the Amazon Tropical Forests
2020
- Biotic and Environmental Drivers of Plant Microbiomes Across a Permafrost Thaw Gradient
2020
- The IsoGenie database: An interdisciplinary data management solution for ecosystems biology and environmental research
2020
- Belowground changes to community structure alter methane-cycling dynamics in Amazonia
2020
- The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data
2020
- Microbial community analyses inform geochemical reaction network models for predicting pathways of greenhouse gas production
2019
- Hydrological niche segregation defines forest structure and drought tolerance strategies in a seasonal Amazon forest
2019
- Persistent effects of fragmentation on tropical rainforest canopy structure after 20 yr of isolation
2019
- The biophysics, ecology, and biogeochemistry of functionally diverse, vertically and horizontally heterogeneous ecosystems: The Ecosystem Demography model, version 2.2-Part 2: Model evaluation for tropical South America
2019
- Leaf reflectance spectroscopy captures variation in carboxylation capacity across species, canopy environment and leaf age in lowland moist tropical forests
2019
- Large carbon cycle sensitivities to climate across a permafrost thaw gradient in subarctic Sweden
2019
- Seasonal and drought-related changes in leaf area profiles depend on height and light environment in an Amazon forest
2019
- Discovery and ecogenomic context of a global Caldiserica-related phylum active in thawing permafrost, Candidatus Cryosericota phylum nov., Ca. Cryosericia class nov., Ca. Cryosericales ord. nov., Ca. Cryosericaceae fam. nov., comprising the four species Cryosericum septentrionale gen. nov. sp. nov., Ca. C. hinesii sp. nov., Ca. C. odellii sp. nov., Ca. C. terrychapinii sp. nov.
2019
- Hydraulic traits explain differential responses of Amazonian forests to the 2015 El Niño-induced drought
2019
- Surface conductance for evapotranspiration of tropical forests: Calculations, variations, and controls
2019
- Microbial evolution reshapes soil carbon feedbacks to climate change
2019
- Cryptic phenology in plants: Case studies, implications, and recommendations
2019
- Isoprene emission structures tropical tree biogeography and community assembly responses to climate
2018
- Age-dependent leaf physiology and consequences for crown-scale carbon uptake during the dry season in an Amazon evergreen forest
2018
- Leaf phenology as one important driver of seasonal changes in isoprene emissions in central Amazonia
2018
- Host-linked soil viral ecology along a permafrost thaw gradient
2018
- Reviews and syntheses: Carbonyl sulfide as a multi-scale tracer for carbon and water cycles
2018
- Implications of diurnal changes in leaf PRI on remote measurements of light use efficiency
2018
- Continental-scale consequences of tree die-offs in North America: Identifying where forest loss matters most
2018
- Methanotrophy across a natural permafrost thaw environment
2018
- Causes of reduced leaf-level photosynthesis during strong El Niño drought in a Central Amazon forest
2018
- The Threat of Multi-Year Drought in Western Amazonia
2018
- Carbon exchange in an Amazon forest: From hours to years
2018
- Biological processes dominate seasonality of remotely sensed canopy greenness in an Amazon evergreen forest
2018
- A novel correction for biases in forest eddy covariance carbon balance
2018
- Soil viruses are underexplored players in ecosystem carbon processing
2018
- Genome-centric view of carbon processing in thawing permafrost
2018
- Hydraulic redistribution affects modeled carbon cycling via soil microbial activity and suppressed fire
2018
- Ecosystem heterogeneity and diversity mitigate Amazon forest resilience to frequent extreme droughts
2018
- Variations of leaf longevity in tropical moist forests predicted by a trait-driven carbon optimality model
2017
- Hydrogenation of organic matter as a terminal electron sink sustains high CO<inf>2</inf>:CH<inf>4</inf> production ratios during anaerobic decomposition
2017
- The long-solved problem of the best-fit straight line: Application to isotopic mixing lines
2017
- Leaf aging of Amazonian canopy trees as revealed by spectral and physiochemical measurements
2017
- Spectral analysis of amazon canopy phenology during the dry season using a tower hyperspectral camera and modis observations
2017
- Adding stable carbon isotopes improves model representation of the role of microbial communities in peatland methane cycling
2017
- Dynamics of canopy stomatal conductance, transpiration, and evaporation in a temperate deciduous forest, validated by carbonyl sulfide uptake
2017
- Does vapor pressure deficit drive the seasonality of δ<sup>13</sup>C of the net land-atmosphere CO<inf>2</inf> exchange across the United States?
2017
- Differences in xylem and leaf hydraulic traits explain differences in drought tolerance among mature Amazon rainforest trees
2017
- Optimum air temperature for tropical forest photosynthesis: Mechanisms involved and implications for climate warming
2017
- Do dynamic global vegetation models capture the seasonality of carbon fluxes in the Amazon basin? A data-model intercomparison
2017
- Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
2017
- CO<inf>2</inf> diffusion into pore spaces limits weathering rate of an experimental basalt landscape
2017
- Convergence in relationships between leaf traits, spectra and age across diverse canopy environments and two contrasting tropical forests
2017
- Partitioning controls on Amazon forest photosynthesis between environmental and biotic factors at hourly to interannual timescales
2017
- The phenology of leaf quality and its within-canopy variation is essential for accurate modeling of photosynthesis in tropical evergreen forests
2017
- Erratum: CO<inf>2</inf> diffusion into pore spaces limits weathering rate of an experimental basalt landscape [Geology, 45, (2016), (203-206)] doi: 10.1130/G38569.1
2017
- Prototype campaign assessment of disturbance-induced tree loss effects on surface properties for atmospheric modeling
2017
- Vegetation chlorophyll estimates in the Amazon from multi-angle MODIS observations and canopy reflectance model
2017
- Elemental composition and optical properties reveal changes in dissolved organic matter along a permafrost thaw chronosequence in a subarctic peatland
2016
- Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests
2016
- Permafrost Meta-Omics and Climate Change
2016
- Seasonality of temperate forest photosynthesis and daytime respiration
2016
- Synergistic ecoclimate teleconnections from forest loss in different regions structure global ecological responses
2016
- Toward accounting for ecoclimate teleconnections: intra- and inter-continental consequences of altered energy balance after vegetation change
2016
- Leaf flush drives dry season green-up of the Central Amazon
2016
- Canopy-scale biophysical controls of transpiration and evaporation in the Amazon Basin
2016
- Dry-season greening of Amazon forests
2016
- Climate and leaf phenology controls on tropical forest photosynthesis
2016
- Forest structure along a 600 km transect of natural disturbances and seasonality gradients in central-southern Amazonia
2016
- Structural dynamics of tropical moist forest gaps
2015
- Convergent ecosystem responses to 23-year ambient and manipulated warming link advancing snowmelt and shrub encroachment to transient and long-term climate-soil carbon feedback
2015
- The Landscape Evolution Observatory: A large-scale controllable infrastructure to study coupled Earth-surface processes
2015
- Photosynthetic seasonality of global tropical forests constrained by hydroclimate
2015
- Characterization of active and total fungal communities in the atmosphere over the Amazon rainforest
2015
- Linking canopy leaf area and light environments with tree size distributions to explain Amazon forest demography
2015
- Modelling climate change responses in tropical forests: Similar productivity estimates across five models, but different mechanisms and responses
2015
- Sunlight mediated seasonality in canopy structure and photosynthetic activity of Amazonian rainforests
2015
- An improved isotopic method for partitioning net ecosystem-atmosphere CO<inf>2</inf> exchange
2015
- Soil incubations reproduce field methane dynamics in a subarctic wetland
2015
- Discovery of a novel methanogen prevalent in thawing permafrost
2014
- Journal article: Changes in peat chemistry associated with permafrost thaw increase greenhouse gas production
2014
- Mechanisms of water supply and vegetation demand govern the seasonality and magnitude of evapotranspiration in Amazonia and Cerrado
2014
- Journal article: Discovery of a novel methanogen prevalent in thawing permafrost
2014
- Hillslope-scale experiment demonstrates the role of convergence during two-step saturation
2014
- Methane dynamics regulated by microbial community response to permafrost thaw
2014
- Incipient subsurface heterogeneity and its effect on overland flow generation - Insight from a modeling study of the first experiment at the Biosphere 2 Landscape Evolution Observatory
2014
- Changes in peat chemistry associated with permafrost thaw increase greenhouse gas production
2014
- Journal article: Methane dynamics regulated by microbial community response to permafrost thaw
2014
- Long-term eddy covariance measurements of the isotopic composition of the ecosystem-atmosphere exchange of CO sub 2 /sub in a temperate forest
2013
- Tree Species Effects on Soil Properties and Greenhouse Gas Fluxes in East-central Amazonia: Comparison between Monoculture and Diverse Forest
2013
- Overview of the large-scale biosphere-atmosphere experiment in amazonia data model intercomparison project (LBA-DMIP)
2013
- What drives the seasonality of photosynthesis across the Amazon basin? A cross-site analysis of eddy flux tower measurements from the Brasil flux network
2013
- Inter-annual variability of carbon and water fluxes in Amazonian forest, Cerrado and pasture sites, as simulated by terrestrial biosphere models
2013
- Measurements of CH4 fluxes and isotopes reveal changing mechanisms of production and consumption across a thaw gradient in an arctic wetland
2013
- Long-term eddy covariance measurements of the isotopic composition of the ecosystem-atmosphere exchange of CO<inf>2</inf> in a temperate forest
2013
- Deforestation and climate feedbacks threaten the ecological integrity of south-southeastern Amazonia.
2013
- Surface ecophysiological behavior across vegetation and moisture gradients in tropical South America
2013
- Tropical tree species effects on soil properties and greenhouse gas fluxes in monoculture and diverse forests
2013
- Confronting model predictions of carbon fluxes with measurements of Amazon forests subjected to experimental drought
2013
- Resolving systematic errors in estimates of net ecosystem exchange of CO2 and ecosystem respiration in a tropical forest biome
2013
- Root niche separation can explain avoidance of seasonal drought stress and vulnerability of overstory trees to extended drought in a mature Amazonian forest
2012
- Differences in Amazon forest growth and carbon dynamics predicted by profiles of canopy leaf area and light environment
2012
- Within-plant isoprene oxidation confirmed by direct emissions of oxidation products methyl vinyl ketone and methacrolein
2012
- Amazon forest carbon dynamics predicted by profiles of canopy leaf area and light environment
2012
- Ecosystem-scale compensation points of formic and acetic acid in the central Amazon
2011
- Natural and drought scenarios in an east central Amazon forest: Fidelity of the Community Land Model 3.5 with three biogeochemical models
2011
- Reduced impact logging minimally alters tropical rainforest carbon and energy exchange
2011
- Height Above the Nearest Drainage - a hydrologically relevant new terrain model
2011
- Within-canopy sesquiterpene ozonolysis in Amazonia
2011
- SAGEEP3 multi-scale monitoring of ecohydrological processes using electrical resistivity tomography
2011
- Variations in Amazon forest productivity correlated with foliar nutrients and modelled rates of photosynthetic carbon supply
2011
- Do plant species influence soil CO<inf>2</inf> and N<inf>2</inf>O fluxes in a diverse tropical forest?
2010
- Land surface modeling inside the Biosphere 2 tropical rain forest biome
2010
- Sources and properties of Amazonian aerosol particles
2010
- Remote sensing of tropical forest phenology: Issues and controversies
2010
- Climate-induced tree mortality: Earth system consequences
2010
- Gas phase measurements of pyruvic acid and its volatile metabolites
2010
- Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest?
2010
- Patterns of water and heat flux across a biome gradient from tropical forest to savanna in brazil
2009
- Dynamics of carbon, biomass, and structure in two Amazonian forests
2009
- The land-atmosphere water flux in the tropics
2009
- The hills are alive: Earth science in a controlled environment
2009
- Ecosystem carbon fluxes and Amazonian forest metabolism
2009
- Modeling the carbon balance of Amazonian rain forests: Resolving ecological controls on net ecosystem productivity
2009
- Resolving systematic errors in estimates of net ecosystem exchange of CO<inf>2</inf> and ecosystem respiration in a tropical forest biome
2008
- Multiple site tower flux and remote sensing comparisons of tropical forest dynamics in Monsoon Asia
2008
- Resolving systematic errors in estimates of net ecosystem exchange of CO sub 2 /sub and ecosystem respiration in a tropical forest biome
2008
- Amazon forests green-up during 2005 drought
2007
- Seasonal controls on the exchange of carbon and water in an Amazonian rain forest
2007
- Evaluation of MODIS NPP and GPP products across multiple biomes
2006
- What are the instrumentation requirements for measuring the isotopic composition of net ecosystem exchange of CO<inf>2</inf> using eddy covariance methods?
2006
- Shifts in plant dominance control carbon-cycle responses to experimental warming and widespread drought
2006
- What are the instrumentation requirements for measuring the isotopic composition of net ecosystem exchange of CO sub 2 /sub using eddy covariance methods?
2006
- Woody debris contribution to the carbon budget of selectively logged and maturing mid-latitude forests
2006
- Amazon rainforests green-up with sunlight in dry season
2006
- Satellite-based modeling of gross primary production in a seasonally moist tropical evergreen forest
2005
- Subglobal regulation of the global commons: The case of climate change
2005
- Objective threshold determination for nighttime eddy flux filtering
2005
- A high precision pulsed quantum cascade laser spectrometer for measurements of stable isotopes of carbon dioxide
2005
- Long-term eddy covariance measurements of the isotopic composition of the ecosystem-atmosphere exchange of CO2 in a temperate forest
2005
- Climatic variability and vegetation vulnerability in Amazǒnia
2005
- Integrating experimental and gradient methods in ecological climate change research
2004
- Radon fluxes in tropical forest ecosystems of Brazilian Amazonia: Night-time CO<inf>2</inf> net ecosystem exchange derived from radon and eddy covariance methods
2004
- Carbon balance and vegetation dynamics in an old-growth Amazonian forest
2004
- Radon fluxes in tropical forest ecosystems of Brazilian Amazonia: Night-time CO sub 2 /sub net ecosystem exchange derived from radon and eddy covariance methods
2004
- Carbon in Amazon Forests: Unexpected Seasonal Fluxes and Disturbance-Induced Losses
2003
- An international network to monitor the structure, composition and dynamics of Amazonian forests (RAINFOR)
2002
- Plant community composition mediates both large transient decline and predicted long-term recovery of soil carbon under climate warming
2002
- Factors controlling long- and short-term sequestration of atmospheric CO sub 2 /sub in a mid-latitude forest
2001
- Factors controlling long- and short-term sequestration of atmospheric CO<inf>2</inf> in a mid-latitude forest
2001
- The effect of experimental ecosystem warming on CO<inf>2</inf> fluxes in a montane meadow
1999
- The effect of experimental ecosystem warming on CO sub 2 /sub fluxes in a montane meadow
1999
- Terrestrial ecosystem feedbacks to global climate change
1997