A5027652117- Conservation, Biodiversity, and Resource Management
- Forest ecology and management
- Forest Management and Policy
- Atmospheric and Environmental Gas Dynamics
- Fire effects on ecosystems
- Land Use and Ecosystem Services
- Remote Sensing and LiDAR Applications
- Remote Sensing in Agriculture
- Climate variability and models
- Plant Water Relations and Carbon Dynamics
- Environmental Impact and Sustainability
- Precipitation Measurement and Analysis
- Science and Climate Studies
- Climate Change Policy and Economics
- Plant responses to elevated CO2
- Hydrology and Drought Analysis
- Oil Palm Production and Sustainability
- Ecology and Vegetation Dynamics Studies
- Meteorological Phenomena and Simulations
- Rangeland and Wildlife Management
- Coastal and Marine Management
- Economic and Environmental Valuation
- Atmospheric chemistry and aerosols
University of Bristol
2020-2025
GFZ Helmholtz Centre for Geosciences
2023-2025
University of Exeter
2023-2024
Abstract Tropical secondary forests sequester carbon up to 20 times faster than old-growth forests. This rate does not capture spatial regrowth patterns due environmental and disturbance drivers. Here we quantify the influence of such drivers on in Brazilian Amazon using satellite data. Carbon sequestration rates young (<20 years) west are ~60% higher (3.0 ± 1.0 Mg C ha −1 yr ) compared those east (1.3 0.3 ). Disturbances reduce by 8–55%. The 2017 forest stock, 294 Tg C, could be 8%...
The restoration and reforestation of 12 million hectares forests by 2030 are amongst the leading mitigation strategies for reducing carbon emissions within Brazilian Nationally Determined Contribution targets assumed under Paris Agreement. Understanding dynamics forest cover, which steeply decreased between 1985 2018 throughout Brazil, is essential estimating global balance quantifying provision ecosystem services. To know long-term increment, extent, age secondary crucial; however, these...
Abstract Brazil is currently the largest contributor of land use and cover change (LULCC) carbon dioxide net emissions worldwide, representing 17%–29% global total. There is, however, a lack agreement among different methodologies on magnitude trends in LULCC their geographic distribution. Here we perform an evaluation datasets for Brazil, including those used annual budget (GCB), national Brazilian assessments over period 2000–2018. Results show that latest HYDE 3.3 dataset, based new FAO...
The two major Brazilian biomes, the Amazonia and Cerrado (savanna), are increasingly exposed to fires. Amazonian Forest is a fire sensitive ecosystem where fires typically rare disturbance while naturally fire-dependent. Human activities, such as landscape fragmentation land-use management, have modified regime of introduced into Forest. There limited understanding role on occurrence in biomes. Due differences vegetation structure, composition, land use characteristics each biome, we...
Abstract The Amazon is the largest continuous tropical forest in world and plays a key role global carbon cycle. Human-induced disturbances climate change have impacted balance. Here we conduct comprehensive synthesis of existing state-of-the-art estimates contemporary land fluxes using set bottom-up methods (i.e., dynamic vegetation models bookkeeping models) top-down inversion (atmospheric model) over Brazilian whole Biogeographical domain. Over biogeographical region methodologies suggest...
In the Amazon, deforestation and climate change lead to increased vulnerability forest degradation, threatening its existing carbon stocks capacity as a sink. We use satellite L-Band Vegetation Optical Depth (L-VOD) data that provide an integrated (top-down) estimate of biomass track changes over 2011-2019. Because spatial resolution L-VOD is coarse (0.25°), it allows limited attribution observed changes. therefore combined high-resolution annual maps cover disturbances with model losses...
Abstract A quarter of the deforested Amazon has regrown as secondary tropical forest and yet climatic importance these complex regenerating landscapes is only beginning to be recognised. Advances in satellite remote-sensing have transformed our ability detect map changes cover, while detailed ground-based measurements from permanent monitoring plots eddy-covariance flux towers are providing new insights into role forests climate system. This review summarises how progress data availability...
Tropical forests are dynamic ecosystems shaped by deforestation, degradation, and recovery processes, with consequences for the carbon cycle. While emissions from deforestation have been well understood quantified, information on degradation such as fire, logging, windrow drought remain relatively poorly reflecting complexity of these processes in space time. Similarly, potential degraded is understudied compared to secondary regrowing after deforestation. Closing knowledge gaps crucial...
Understanding how forest ecosystems respond to climate extremes, such as droughts and heatwaves, is critical for predicting carbon cycle dynamics across spatio-temporal scales. This study tests the hypothesis that understorey vegetation density significantly modulates magnitude direction of CO2 flux anomalies during extreme climatic events. Using data from GEDI spaceborne LiDAR mission, we derived structural metrics vertical distribution (e.g., proportion lower vs. upper canopy vegetation)...
Abstract. Earth observation data are increasingly used to estimate the magnitude and geographic distribution of greenhouse gas (GHG) fluxes reduce overall uncertainty in global carbon budget, including for forests. Here, we report on a revised updated geospatial, Earth-observation-based modeling framework that maps GHG emissions, removals, net balance between them globally forests from 2001 2023 at roughly 30 m resolution, hereafter referred as Global Forest Watch (GFW) model (see “Code...
<title>Abstract</title> Meeting global climate commitments and avoiding severe warming requires drastic reductions in emissions large-scale removals of atmospheric carbon dioxide1. Forest regrowth offers scalable cost-effective removal,2,3 but rates vary substantially by location age forest stand4,5. Here we generate pixel level (~1-km2) Chapman-Richards growth curves for aboveground accumulation naturally regrowing forests, based on 109,708 field estimates 66 environmental covariates....
Abstract Secondary forests (SF) have a large climate mitigation potential, given their ability to sequester carbon up 20 times faster than old-growth forests. Environmental variability and anthropogenic disturbances lead uncertainties in estimating spatial patterns of SF sequestration rates. Here we quantify the influence environmental disturbance drivers on rate regrowth Brazilian Amazon, by integrating 33-year land cover timeseries with 2017 Aboveground Biomass dataset. Carbon rates young...
Abstract The availability of seasonal weather forecast information in Africa has potential to provide advanced early warning rainfall variability, informing preparedness actions minimise adverse impacts. Obtaining accurate for the spatial scales at which decisions are made is vital. Here we examine impact on utility forecasts Africa. Using observations alongside from European Centre Medium-Range Weather Forecasts (ECMWF), combine measures local representativity and skill assess optimal...
Abstract The Amazon is the largest continuous tropical forest in world and plays a key role global carbon cycle. Human-induced disturbances climate change have impacted balance. Here we conduct comprehensive analysis of state-of-the-art estimates contemporary land fluxes Amazon. Over whole region bottom-up methodologies suggest small average sink over 2010-2020, contrast with source simulated by top-down inversions (2010-2018). However, these are not significantly different from one another...
Understanding the relationship between forest age, an indicator of successional stages, and net carbon fluxes is crucial for effective management climate mitigation. Using satellite-based Global Age Mapping Integration (GAMI) v1.0 dataset, we analyzed age shifts from 2010 to 2020 their correlation with dioxide (CO2) flux changes independent atmospheric inversions. Globally, do not report substantial during this period. The total area young (1-20 years old), intermediate (21-60 mature (61-150...
Secondary forests, forest naturally regrowing on areas of previously deforested, now abandoned lands are crucial to help maintain and increase the carbon sink land, helping tackle climate ecological emergencies. There is a growing research field improving our understanding dynamics secondary often using novel remote sensing techniques map temporal spatial patterns change. However, full datasets from not fully accessible all users, either because whole dataset published, or it presented in...
<title>Abstract</title> Understanding the impact of forest age transitions on global net carbon balance is critical for advancing management and climate change mitigation strategies. We analysed changes in (2010-2020) using Global Age Mapping Integration (GAMI) v2.0 dataset alongside satellite-derived aboveground (AGC) atmospheric inversion-derived CO2 flux data. observe decreasing Amazon, Congo Basin, Southeast Asia, primarily old-growth forests due to stand-replacing disturbances like...
Abstract. Forests are a key component of climate change mitigation strategies because they both emit and remove atmospheric carbon dioxide. Earth observation data increasingly used to estimate the magnitude geographic distribution greenhouse gas (GHG) fluxes reduce overall uncertainty in global budget, including for forests. Here we report on revised updated geospatial, observation-based forest flux modelling framework that maps GHG emissions (Gibbs et al. 2024a), removals 2024b), net...
Societal Impact Statement Forest ecosystems absorb and store about 25% of global carbon dioxide emissions annually are increasingly shaped by human land use management. Climate change interacts with forest dynamics to influence observed stocks the strength sink. We show that climate effects on modeled strongest in tropical wildlands have limited influence. Global sink may decline as anthropogenic influences intensify, wildland forests, especially Amazonia, likely being vulnerable. Summary...