A5068328675- Remote Sensing in Agriculture
- Wildlife Ecology and Conservation
- Marine animal studies overview
- Animal Vocal Communication and Behavior
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Land Use and Ecosystem Services
- Plant Water Relations and Carbon Dynamics
- Remote Sensing and LiDAR Applications
- Aquatic Ecosystems and Phytoplankton Dynamics
- Climate change and permafrost
- Atmospheric and Environmental Gas Dynamics
- Forest Management and Policy
- Botany, Ecology, and Taxonomy Studies
- Date Palm Research Studies
- Remote Sensing and Land Use
- Botany and Plant Ecology Studies
- Geochemistry and Geologic Mapping
- Conservation, Biodiversity, and Resource Management
- Forest ecology and management
- Climate variability and models
- Light effects on plants
- Leaf Properties and Growth Measurement
University of Oxford
2018-2025
Northern Arizona University
2018
Abstract The Arctic is warming twice as fast the rest of planet, leading to rapid changes in species composition and plant functional trait variation. Landscape-level maps vegetation distributions are required expand spatially-limited plot studies, overcome sampling biases associated with most accessible research areas, create baselines from which monitor environmental change. Unmanned aerial vehicles (UAVs) have emerged a low-cost method generate high-resolution imagery bridge gap between...
Abstract Unmanned aerial vehicles (UAVs) are increasingly important in wildlife data collection but concern over disturbance has led several countries to ban their use National Parks. Disturbance is an animal welfare and impedes scientific through provoking aberrant behaviour. Dealing with the issue of will enable researchers UAV technology more effectively ethically. Here we present a novel method determine optimal flight altitude for minimising drone using species audiograms. We recorded...
Abstract Tropical forests dominate terrestrial photosynthesis, yet there are major contradictions in our understanding due to a lack of field studies, especially outside the tropical Americas. A recent study indicated that West African have among highest gross primary productivity (GPP) observed, contradicting models rank them lower than Amazonian forests. Here, we show possible reasons for this data-model mismatch. We found biometric GPP measurements on average 56.3% higher multiple global...
Tropical forest canopies are the biosphere's most concentrated atmospheric interface for carbon, water and energy1,2. However, in Earth System Models, diverse heterogeneous tropical biome is represented as a largely uniform ecosystem with either singular or small number of fixed canopy ecophysiological properties3. This situation arises, part, from lack understanding about how why functional properties vary geographically4. Here, by combining field-collected data more than 1,800 vegetation...
Human activities are altering coral reef ecosystems worldwide. Optical remote sensing via satellites and drones can offer novel insights into where how reefs changing. However, interpretation of the observed optical signal (remote-sensing reflectance) is an ill-posed inverse problem, as there may be multiple different combinations water constituents, depth benthic reflectance that result in a similar signal. Here, we apply new approach, simulation-based inference, for addressing problem...
The leaf economic spectrum (LES) describes a set of universal trade-offs between mass per area (LMA), nitrogen (N), phosphorus (P) and photosynthesis that influence patterns primary productivity nutrient cycling. Many questions regarding vegetation-climate feedbacks can be addressed with better understanding LES traits their controls. Remote sensing offers enormous potential for generating large-scale trait data. Yet so far, canopy studies have been limited to imaging spectrometers onboard...
Summary We quantified the relative effect of plasticity and heritability on Populus fremontii (Fremont cottonwood) leaf reflectance using clonal replicates propagated from 16 populations grown across three common gardens spanning a mean annual temperature gradient 10.7–22.3°C. used variance partitioning to decompose phenotypic variation expressed in spectra into genotypic versus environmental components estimate broad-sense found that was most strongly red-edge (∼680-750nm) SWIR...
Abstract Do tropical trees close to death have a distinct change their leaf spectral signature? Tree mortality rates been increasing in forests, reducing the global carbon sink. Upcoming hyperspectral satellites could be used predict regions experiencing extensive tree during periods of stress, such as drought. Here we show, for rainforest Borneo, how imminent impacts physiological traits and reflectance. We measured reflectance (400–2500 nm), light‐saturated photosynthesis (A sat ), dark...
Abstract Tropical forests dominate terrestrial photosynthesis, yet there are major contradictions in our understanding due to a lack of field studies, especially outside the tropical Americas. A recent study indicated that West African have among highest gross primary productivity (GPP) observed, contradicting models rank them lower than Amazonian forests. Here, we explore possible reasons for this data-model mismatch. We found situ GPP measurements higher multiple global products at studied...
<title>Abstract</title> Tropical forests dominate terrestrial photosynthesis, yet there are major contradictions in our understanding due to a lack of field studies, especially outside the tropical Americas. A recent study indicated that West African have among highest gross primary productivity (GPP) observed, contradicting models rank them lower than Amazonian forests. Here, we explore possible reasons for this data-model mismatch. We found situ GPP measurements higher multiple global...
Optical remote sensing (RS) enables the study of elemental composition Earth’s surface over broad spatial extents by detecting reflected electromagnetic radiation. Covalent bonds macromolecular structures often reflect radiation at specific wavelengths, and in some cases relate to identity. In other cases, interfering optical properties greatly impact ability RS measure elements directly, but advances statistical methods theoretical understanding expand capacity quantify diverse many...
La présence de la naïade grêle, Najas gracillima (Najadaceae), dans flore aquatique indigène du Québec est confirmée. Cette espèce sensible à pollution en déclin toute son aire naturelle nord-américaine raison l’eutrophisation des lacs et cours d’eau. Pour faciliter l’identification cette rareté, une clé province discussion caractères permettant sont incluses. Le danger nuire au le confondant avec l’exotique envahissant minor souligné. De plus, nous présentons les données plus jour sur...
Do tropical trees close to death have a distinct leaf spectral signature? Tree mortality rates been increasing in forests globally which is reducing the global carbon sink. Upcoming hyperspectral satellites could be used predict regions experiencing extensive tree during periods of stress like drought. Here we show how imminent Borneo impacts physiological traits and reflectance. We measured reflectance (400-2500 nm), light saturated photosynthesis (Asat), dark respiration (Rdark), mass area...