Stuart Grieve
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View article: Coupling fragmentation to a size-selective sedimentation model can quantify the long-term fate of buoyant plastics in the ocean
Coupling fragmentation to a size-selective sedimentation model can quantify the long-term fate of buoyant plastics in the ocean Open
Plastic pollution in the ocean is a global environmental issue, with buoyant debris accumulating at the surface and posing long-term ecological threats. Although sediments are the ultimate sink for plastics, a mismatch between observed sur…
View article: Comment on egusphere-2025-1953
Comment on egusphere-2025-1953 Open
View article: Rapid polygenic adaptation in a wild population of ash trees under a novel fungal epidemic
Rapid polygenic adaptation in a wild population of ash trees under a novel fungal epidemic Open
Rapid evolution through small shifts in allele frequencies at thousands of loci is a long-standing neo-Darwinian prediction but is hard to characterize in the wild. European ash tree ( Fraxinus excelsior ) populations have recently come un…
View article: A fractal framework for channel–hillslope coupling
A fractal framework for channel–hillslope coupling Open
Questions of landscape scale in coupled channel–hillslope landscape evolution have been a significant focus of geomorphological research for decades. Studies to date have suggested a characteristic landscape length that marks the shift fro…
View article: GDBM: A database of global drainage basin morphology
GDBM: A database of global drainage basin morphology Open
Rivers and their drainage basins are fundamental landscape units, and their morphology is a record of the cascade of geologic, tectonic, biological, and climatic processes acting upon them. Quantifying this cascade depends on morphometric …
View article: Manual Labelling Artificially Inflates Deep Learning-Based Segmentation Performance on RGB Images of Closed Canopy: Validation Using TLS
Manual Labelling Artificially Inflates Deep Learning-Based Segmentation Performance on RGB Images of Closed Canopy: Validation Using TLS Open
Monitoring forest dynamics at an individual tree scale is essential for accurately assessing ecosystem responses to climate change, yet traditional methods relying on field-based forest inventories are labor-intensive and limited in spatia…
View article: Marine snow as vectors for microplastic transport: Multiple aggregation cycles account for the settling of buoyant microplastics to deep‐sea sediments
Marine snow as vectors for microplastic transport: Multiple aggregation cycles account for the settling of buoyant microplastics to deep‐sea sediments Open
Many studies have reported the paradoxical observation of high concentrations of low‐density microplastics (plastic particles < 5 mm) in deep‐sea sediments despite their buoyancy. The incorporation of buoyant microplastics into marine snow…
View article: Climatic Controls on the Length and Shape of the World's Drainage Basins
Climatic Controls on the Length and Shape of the World's Drainage Basins Open
Climate is thought to affect the structure and evolution of drainage basins, but it is not clear how climate impacts the power law scaling between channel length and drainage area. Since climate controls runoff, streamflow, and erosion reg…
View article: Baseline energy and nutrient intakes of AU‐ARROW participants using a Food Frequency Questionnaire‐ Preliminary findings
Baseline energy and nutrient intakes of AU‐ARROW participants using a Food Frequency Questionnaire‐ Preliminary findings Open
Background Lifestyle modifications incorporating a healthy diet, physical activity, brain training and health monitoring have proven effective in preventing dementia and related cognitive decline (REF). The Australian‐Multidomain Lifestyle…
View article: Flocs as vectors for microplastics in the aquatic environment
Flocs as vectors for microplastics in the aquatic environment Open
Microplastics (MPs) are an important component of suspended particulate matter in aquatic environments with two main transport modes, that is, as individual entities or in flocs. Despite its importance to MP pollution management, understan…
View article: Global Drainage Basin Morphology (GDBM) dataset
Global Drainage Basin Morphology (GDBM) dataset Open
The Global Drainage Basin Measurement (GDBM) dataset contains morphometric information about 254,966 large river channels, classified into Koppen-Geiger climate sub zones. These data can be used to explore global trends in river morphology…
View article: deadtrees.earth - An Open-Access and Interactive Database for Centimeter-Scale Aerial Imagery to Uncover Global Tree Mortality Dynamics
deadtrees.earth - An Open-Access and Interactive Database for Centimeter-Scale Aerial Imagery to Uncover Global Tree Mortality Dynamics Open
Excessive tree mortality is a global concern and remains poorly understood as it is a complex phenomenon. We lack global and temporally continuous coverage on tree mortality data. Ground-based observations on tree mortality, e.g ., derived…
View article: A Fractal Framework for Channel-Hillslope Coupling
A Fractal Framework for Channel-Hillslope Coupling Open
Questions of landscape scale in coupled channel-hillslope landscape evolution have been a significant focus of geomorphological research for decades. Studies to date have suggested a characteristic landscape length that marks the shift fro…
View article: Low-Cost Tree Crown Dieback Estimation Using Deep Learning-Based Segmentation
Low-Cost Tree Crown Dieback Estimation Using Deep Learning-Based Segmentation Open
The global increase in observed forest dieback, characterised by the death of tree foliage, heralds widespread decline in forest ecosystems. This degradation causes significant changes to ecosystem services and functions, including habitat…
View article: <scp>UAV</scp> ‐derived greenness and within‐crown spatial patterning can detect ash dieback in individual trees
<span>UAV</span> ‐derived greenness and within‐crown spatial patterning can detect ash dieback in individual trees Open
Ash Dieback (ADB) has been present in the UK since 2012 and is expected to kill up to 80% of UK ash trees. Detecting and quantifying the extent of ADB in individual tree crowns (ITCs), which is crucial to understanding resilience and resis…
View article: Modelling the sedimentation of macro-, micro- and nanoplastics in the ocean from surface to sediment
Modelling the sedimentation of macro-, micro- and nanoplastics in the ocean from surface to sediment Open
The ocean is considered a sink for plastic waste, with buoyant plastics remaining at the surface for up to 50 years. Removal of plastic waste from the ocean by manpower is not feasible, but natural-based removal strategies are promising. A…
View article: Forest-landscape dynamics across a climate gradient
Forest-landscape dynamics across a climate gradient Open
Forests and landscapes are fundamentally interconnected, with geomorphic process being modulated by vegetation dynamics, which in turn is influenced by landscape form. Trees play a critical role in shaping landscapes by redistributing sedi…
View article: Low-cost tree crown dieback estimation using deep learning-based segmentation
Low-cost tree crown dieback estimation using deep learning-based segmentation Open
The global increase in observed forest dieback, characterized by the death of tree foliage, heralds widespread decline in forest ecosystems. This degradation causes significant changes to ecosystem services and functions, including habitat…
View article: Quantifying vegetation indices using terrestrial laser scanning: methodological complexities and ecological insights from a Mediterranean forest
Quantifying vegetation indices using terrestrial laser scanning: methodological complexities and ecological insights from a Mediterranean forest Open
Accurate measurement of vegetation density metrics including plant, wood and leaf area indices (PAI, WAI and LAI) is key to monitoring and modelling carbon storage and uptake in forests. Traditional passive sensor approaches, such as digit…
View article: Global Drainage Basin Morphology (GDBM) dataset
Global Drainage Basin Morphology (GDBM) dataset Open
The Global Drainage Basin Measurement (GDBM) dataset contains morphometric information about 254,951 large river channels, classified into Koppen-Geiger climate sub zones. These data can be used to explore global trends in river morphology…
View article: Aquatic Aggregates as “Vector” for Microplastics
Aquatic Aggregates as “Vector” for Microplastics Open
Easily transportable microplastics (plastic particles < 5 mm) have become an increasingly important component of suspended particulate matter (SPM) in the aquatic environment, and their fate is significantly influenced by aggregation and f…
View article: Fusion of European forest inventories with Sentinel-1 and Sentinel-2 data for improving scalability in estimating forest variables
Fusion of European forest inventories with Sentinel-1 and Sentinel-2 data for improving scalability in estimating forest variables Open
Large scale forest inventory plot data are key to monitor forest ecosystems, but while they provide very detailed information at tree level they are limited in resolution in both space and through time. Earth Observation (EO) data offer th…
View article: Comparison of extracted ecological features of forests from multiple 3D technologies
Comparison of extracted ecological features of forests from multiple 3D technologies Open
The recent explosion in availability of high resolution remote sensing technologies and, crucially, the tools to analyse the 3D data they produce is leading to substantial interest in using them for widespread forest structural monitoring.…
View article: High resolution forest-landscape interactions
High resolution forest-landscape interactions Open
In forested landscapes, trees drive and modulate both advective and diffusive sediment transport processes. These relationships represent complex feedbacks between topography and vegetation. Root growth and tree throw drive diffusive soil …
View article: The impacts of climate change on eroding coastal historic landfills
The impacts of climate change on eroding coastal historic landfills Open
Impacts of climate change – sea level rise, more frequent storms and coastal flooding will exacerbate coastal erosion, resulting in the erosion of coastal historic landfills. These historic landfills are particularly vulnerable to su…
View article: DHP images collected from Alto Tajo and Cuellar in Spain.
DHP images collected from Alto Tajo and Cuellar in Spain. Open
Digital Hemispherical Photography images taken in 33 30 x 30 m plots across two sites in Spain. Images were taken on a 10 m grid, making 16 locations per plot (see Flynn et al., 2022 for details). At each location, DHP images were captured…
View article: DHP images collected from Alto Tajo and Cuellar in Spain.
DHP images collected from Alto Tajo and Cuellar in Spain. Open
Digital Hemispherical Photography images taken in 33 30 x 30 m plots across two sites in Spain. Images were taken on a 10 m grid, making 16 locations per plot (see Flynn et al., 2022 for details). At each location, DHP images were captured…
View article: Comment on egusphere-2022-1055
Comment on egusphere-2022-1055 Open
Abstract. Accurate measurement of vegetation density metrics including plant, wood and leaf area indices (PAI, WAI and LAI) is key to monitoring and modelling carbon storage and uptake in forests. Traditional passive senso…
View article: AI applications in forest monitoring need remote sensing benchmark datasets
AI applications in forest monitoring need remote sensing benchmark datasets Open
With the rise in high resolution remote sensing technologies there has been an explosion in the amount of data available for forest monitoring, and an accompanying growth in artificial intelligence applications to automatically derive fore…
View article: Supplementary material to "Quantifying vegetation indices using TLS: methodological complexities and ecological insights from a Mediterranean forest"
Supplementary material to "Quantifying vegetation indices using TLS: methodological complexities and ecological insights from a Mediterranean forest" Open