A5017037052- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- Fire effects on ecosystems
- Coastal wetland ecosystem dynamics
- Soil erosion and sediment transport
- Geology and Paleoclimatology Research
- Hydrology and Sediment Transport Processes
- Geological formations and processes
- Landslides and related hazards
- Coastal and Marine Dynamics
- Marine and coastal plant biology
- Aeolian processes and effects
- Isotope Analysis in Ecology
- Hydrology and Watershed Management Studies
- Marine and coastal ecosystems
- Water Quality Monitoring and Analysis
- Flood Risk Assessment and Management
- biodegradable polymer synthesis and properties
- Scientific Computing and Data Management
- Air Quality Monitoring and Forecasting
- Marine Biology and Environmental Chemistry
- Toxic Organic Pollutants Impact
- Additive Manufacturing and 3D Printing Technologies
- Atmospheric and Environmental Gas Dynamics
- Research Data Management Practices
University of California, Riverside
2016-2025
Nanyang Normal University
2022
The University of Melbourne
2022
University of Edinburgh
2020
University of California, Davis
2010-2019
Chevron (Netherlands)
2019
Microplastic pollution research has suffered from inadequate data and tools for spectral (Raman infrared) classification. Spectral matching often are not accurate microplastics identification cost-prohibitive. Lack of accuracy stems the diversity microplastic pollutants, which represented in libraries. Here, we propose a viable software solution: Open Specy. Specy is on web (www.openspecy.org) an R package. free allows users to view, process, identify, share their spectra community library....
The ubiquitous pollution of the environment with microplastics, a diverse suite contaminants, is growing concern for science and currently receives considerable public, political, academic attention. potential impact microplastics in has prompted great deal research recent years. Many methods have been developed to answer different questions about microplastic pollution, from sources, transport, fate environment, effects on humans wildlife. These are often insufficiently described, making...
Microplastic research is a rapidly developing field, with urgent needs for high throughput and automated analysis techniques. We conducted review covering image from optical microscopy, scanning electron fluorescence spectral Fourier transform infrared (FT-IR) spectroscopy, Raman pyrolysis gas–chromatography mass–spectrometry, energy dispersive X-ray spectroscopy. These techniques were commonly used to collect, process, interpret data microplastic samples. This outlined critiques current...
Although the study of microplastics in aquatic environment incorporates a diversity research fields, it is still its infancy many aspects while comparable topics have been studied other disciplines for decades. In particular, extensive sedimentology can provide valuable insights to guide future research. To advance our understanding comparability natural sediments with microplastics, we take an interdisciplinary look at existing literature describing particle properties, transport processes,...
River flow is a major conveyance of microplastic (1–5000 μm) pollution from land to marine systems. However, the current approaches monitoring and modeling fluvial transport have primarily relied on sampling surface assumptions about concentration depth profiles estimate depth-averaged concentration. The Rouse profile was adapted show that includes all traditional domains (bed load, settling suspended wash load), as well additional specific low-density materials with rising velocities in...
Analysis of microplastics in the environment requires polymer characterization as a confirmation step for suspected microplastic particles found sample. Material is costly and can take long time per particle. When particle counts are high, many researchers cannot characterize every their sample due to or monetary constraints. Moreover, characterizing samples with high plastic unnecessary describing properties. We propose an priori approach determine number that should be randomly subsampled...
Pretreatment of sediment with hydrogen peroxide to remove organic constituents and aid deflocculation is a common component particle size analyses terrestrial marine sediments. This study quantitatively determined the effect range treatment levels on distribution among four types representing mineral/organic distributions, content characterisation (charcoal or detrital plant material). The hypothesis was that complete removal particles would lead improved repeatability results for given...
Research Article| July 01, 2012 The effects of wildfire on the sediment yield a coastal California watershed J.A. Warrick; Warrick † 1U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, 95060, USA †E-mail: jwarrick@usgs.gov Search for other works by this author on: GSW Google Scholar Hatten; Hatten 2College Forest Resources, Mississippi State University, State, 39762, G.B. Pasternack; Pasternack 3Department Land, Air Water University California, Davis, 95616, A.B....
Abstract Postfire debris flows are particularly complex to study because they do not form discrete initiation locations and commonly involve multiple simultaneously operating erosional processes. Although recent work has begun elucidate a more mechanistic understanding of postfire flows, there is still paucity detailed sediment budgets characterizing these events. In this study, we seek understand how sources processes change over storm cycles. To this, performed repeat high‐resolution...
Ventura River watershed, California, USA After wildfire, small mountainous watersheds can produce dramatic increases in fluvial sediment transport, but these changes are often evaluated under the assumption of stationary pre-fire dynamics. The objectives this study were to investigate temporal dependence fine (silt and clay) suspended dynamics before after 48.5 % 194 km2 undammed portion watershed burned 2017 Thomas Fire. Fine concentrations decreased between 1971 2008. In 2018 2019, 14.2...
Abstract Urban areas are the primary source of human-made litter globally, and roadsides a accumulation location. This study aimed to investigate how arrives at determine rate composition roadside litter. We monitored select in Inland Empire, California, for abundance (count) (material, item, brand type). Receipt with sale time location information was used whether wind, runoff, or human travel were dominant transport agents. Only 9% receipts could have experienced wind direction not...
Abstract As coastal ecosystems become widely recognized for their capacity to sequester carbon (blue carbon), standard accounting methodologies the generation of credits are being developed. To ensure applicability these standards across blue ecosystems, we investigated organic provenance and burial in salt marshes seagrass meadows an arid, upwelling‐dominated Eastern Pacific lagoon. We found low density benthic sediments Bahía de San Quintín (5.9 ± 0.5 mg C cm −3 ), only marginally higher...
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There has been a rapid increase in the number of studies on both trash and microplastics recent years, with little data standardization. However, as is being produced by wide range practitioners differing study goals, researchers adhering to single standard may not be realistic. Post-hoc harmonization pathway that transforms non-standardized from prior into harmonized, comparable databases. Harmonization, however, hindered vast categorical descriptors used describe (thousands or more),...
Globally, rivers have been found to contain high concentrations of microplastics and are also the major conveyors microplastic pollution ocean. This has engendered an increased focus on sources, transport, fate in riverine systems. But how should we design monitoring plans for if our goal is quantify concentration, character, flux? Here present results campaigns conducted several systems draining coastal watersheds Southern California discuss lessons learned as well future directions support...