Publications & Conferences
Hydrological and biogeochemical influences on contrasting environmental pathways of chlorothalonil and its transformation product in agricultural systems
Agricultural pesticides are major contributors to nonpoint-source pollution, yet the ways in which hydrological and biogeochemical processes influence the environmental behavior of pesticides and their transformation products (TPs) remain poorly understood. Here, we investigated the fate of the fungicide chlorothalonil (CHL) and its primary TP, SDS-3701, in a representative tomato production system in South Florida...
Spatiotemporal controls on soil organic carbon stocks in subtropical grazing lands: An uncertainty-aware digital soil mapping approach
Accurate spatial quantification of soil organic carbon (SOC) stocks and their associated uncertainties is vital for climate mitigation and sustainable grazing management. However, regional SOC mapping remains challenging due to complex soil–landscape interactions, dynamic environmental processes, and limited field observations. This study advances regional SOC mapping by developing a parsimonious, uncertainty-aware digital soil mapping framework...
Assessing diesel contamination in soils under bare and vegetated conditions using hyperspectral data, volatile organic compound measurements, and machine learning
Diesel contamination poses a threat to soil condition and overall security. Hurricanes frequently cause chemical pollution in Florida by damaging facilities and releasing hazardous substances, such as diesel, into the environment. This study explores the use of hyperspectral point (350–2500 nm) and imaging (350–1000 nm) data to estimate volatile organic compound (VOC) headspace concentrations, a...
Interpretable deep-learning DRASTIC for statewide nitrate-vulnerability mapping in Florida's surficial aquifer system
Groundwater is a vital resource that supports drinking water supplies, agriculture, and ecosystems worldwide, but it is increasingly threatened by overexploitation, contamination, and urbanization. Florida is particularly vulnerable due to its shallow Surficial Aquifer System (SAS), karst geology, widespread septic systems, agricultural activities, and climate-related hazards. Groundwater vulnerability maps are important tools for identifying high-risk...
Internal soil standard as a tool to assess and correct spectral variability between laboratories for a practical quantitative utilization
Soil spectroscopy is increasingly used to provide accurate and affordable prediction of various soil properties. However, variability in instrument characteristics and operational protocols still hinders the integration and harmonization of Visible-Near InfraRed- Short Wave InfraRed (VNIR–SWIR) Soil Spectral Libraries (SSLs). This study examines the use of 99% pure silica sand, Lucky Bay (LB), as an...
A soil satellite spectral service (Sat4): A strategy for stakeholders
Soil spectral libraries (SSLs) are commonly built with expensive proximal sensors, while satellite spectral data are free and widely available. This study investigates how service providers can construct a satellite-based SSL to deliver soil information to stakeholders. We propose the Soil Satellite Spectral Service (Sat4-Service) strategy to estimate clay content and soil organic carbon (SOC)...
Recent Advances in Remote Sensing of Soil Science
Soil is the foundation of terrestrial life, underpinning ecosystem services, food production, and climate regulation. The accurate characterization of soil properties at regional to global scales is both a scientific and societal priority. Remote sensing (RS) provides the observational backbone for such characterization. When combined with artificial intelligence (AI) and machine learning (ML) algorithms, it...
SKIN MICROVASCULAR FUNCTION PREDICTS 10-YEAR CARDIOVASCULAR RISK IN TREATMENT-NAÏVE HYPERTENSIVE AND NORMOTENSIVE INDIVIDUALS
Objective:Skin microvascular dysfunction has been documented both in patients with established cardiovascular disease (CVD) and individuals at elevated cardiovascular risk. The aim of this study was to investigate whether markers of skin microvascular function correlate with the estimated 10-year cardiovascular risk in a population without established CVD.Design and method:We recruited newly diagnosed, untreated hypertensives (UHTs)...
GeoGPT for action ready flood and disaster risk geo-intelligence in Florida
Extreme weather in Florida can result compound impacts, crop damage, prolonged waterlogging, and inundation, that disrupt farm activities and complicate field scale assessment. Following an event, extension agents and growers typically need information on short timelines related to crop damage assessment to prioritize scouting, report impacts, and support recovery decisions, and flood-prone area information to...
Impact of coupling biochar and clay minerals on physicochemical properties of sandy soils and CH4/CO2 flux for agriculture
Sandy soils present key limitations to sustainable agriculture due to low water retention, poor aggregation, and limited nutrient-holding capacity, motivating the use of amendments to overcome these constraints. This study evaluated zeolite, bentonite, and aluminum hydroxide (Al(OH)3) at 2, 5, and 10 wt%, with and without biochar, on the physical, chemical, and gas-exchange properties of a...
Hydrological and biogeochemical influences on contrasting environmental pathways of chlorothalonil and its transformation product in agricultural systems
Agricultural pesticides are major contributors to nonpoint-source pollution, yet the ways in which hydrological and biogeochemical processes influence the environmental behavior of pesticides and their transformation products (TPs) remain poorly understood. Here, we investigated the fate of the fungicide chlorothalonil (CHL) and its primary TP, SDS-3701, in a representative tomato production system in South Florida...
Spatiotemporal controls on soil organic carbon stocks in subtropical grazing lands: An uncertainty-aware digital soil mapping approach
Accurate spatial quantification of soil organic carbon (SOC) stocks and their associated uncertainties is vital for climate mitigation and sustainable grazing management. However, regional SOC mapping remains challenging due to complex soil–landscape interactions, dynamic environmental processes, and limited field observations. This study advances regional SOC mapping by developing a parsimonious, uncertainty-aware digital soil mapping framework...
Assessing diesel contamination in soils under bare and vegetated conditions using hyperspectral data, volatile organic compound measurements, and machine learning
Diesel contamination poses a threat to soil condition and overall security. Hurricanes frequently cause chemical pollution in Florida by damaging facilities and releasing hazardous substances, such as diesel, into the environment. This study explores the use of hyperspectral point (350–2500 nm) and imaging (350–1000 nm) data to estimate volatile organic compound (VOC) headspace concentrations, a...
Interpretable deep-learning DRASTIC for statewide nitrate-vulnerability mapping in Florida's surficial aquifer system
Groundwater is a vital resource that supports drinking water supplies, agriculture, and ecosystems worldwide, but it is increasingly threatened by overexploitation, contamination, and urbanization. Florida is particularly vulnerable due to its shallow Surficial Aquifer System (SAS), karst geology, widespread septic systems, agricultural activities, and climate-related hazards. Groundwater vulnerability maps are important tools for identifying high-risk...
Internal soil standard as a tool to assess and correct spectral variability between laboratories for a practical quantitative utilization
Soil spectroscopy is increasingly used to provide accurate and affordable prediction of various soil properties. However, variability in instrument characteristics and operational protocols still hinders the integration and harmonization of Visible-Near InfraRed- Short Wave InfraRed (VNIR–SWIR) Soil Spectral Libraries (SSLs). This study examines the use of 99% pure silica sand, Lucky Bay (LB), as an...
A soil satellite spectral service (Sat4): A strategy for stakeholders
Soil spectral libraries (SSLs) are commonly built with expensive proximal sensors, while satellite spectral data are free and widely available. This study investigates how service providers can construct a satellite-based SSL to deliver soil information to stakeholders. We propose the Soil Satellite Spectral Service (Sat4-Service) strategy to estimate clay content and soil organic carbon (SOC)...
Recent Advances in Remote Sensing of Soil Science
Soil is the foundation of terrestrial life, underpinning ecosystem services, food production, and climate regulation. The accurate characterization of soil properties at regional to global scales is both a scientific and societal priority. Remote sensing (RS) provides the observational backbone for such characterization. When combined with artificial intelligence (AI) and machine learning (ML) algorithms, it...
SKIN MICROVASCULAR FUNCTION PREDICTS 10-YEAR CARDIOVASCULAR RISK IN TREATMENT-NAÏVE HYPERTENSIVE AND NORMOTENSIVE INDIVIDUALS
Objective:Skin microvascular dysfunction has been documented both in patients with established cardiovascular disease (CVD) and individuals at elevated cardiovascular risk. The aim of this study was to investigate whether markers of skin microvascular function correlate with the estimated 10-year cardiovascular risk in a population without established CVD.Design and method:We recruited newly diagnosed, untreated hypertensives (UHTs)...
GeoGPT for action ready flood and disaster risk geo-intelligence in Florida
Extreme weather in Florida can result compound impacts, crop damage, prolonged waterlogging, and inundation, that disrupt farm activities and complicate field scale assessment. Following an event, extension agents and growers typically need information on short timelines related to crop damage assessment to prioritize scouting, report impacts, and support recovery decisions, and flood-prone area information to...
Impact of coupling biochar and clay minerals on physicochemical properties of sandy soils and CH4/CO2 flux for agriculture
Sandy soils present key limitations to sustainable agriculture due to low water retention, poor aggregation, and limited nutrient-holding capacity, motivating the use of amendments to overcome these constraints. This study evaluated zeolite, bentonite, and aluminum hydroxide (Al(OH)3) at 2, 5, and 10 wt%, with and without biochar, on the physical, chemical, and gas-exchange properties of a...