George H. Leonard

ORCID: 0000-0003-0221-8006
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About
Contact & Profiles
Research Areas
  • Microplastics and Plastic Pollution
  • Recycling and Waste Management Techniques
  • Municipal Solid Waste Management
  • Marine and fisheries research
  • Coastal and Marine Management
  • Coral and Marine Ecosystems Studies
  • CO2 Reduction Techniques and Catalysts
  • Marine Biology and Ecology Research
  • Ocean Acidification Effects and Responses
  • Marine animal studies overview
  • Heavy metals in environment
  • Advanced Power Generation Technologies
  • Water Quality and Pollution Assessment
  • Catalysis and Oxidation Reactions
  • Evolutionary Game Theory and Cooperation
  • Geochemistry and Elemental Analysis
  • Effects and risks of endocrine disrupting chemicals
  • Molten salt chemistry and electrochemical processes
  • Marine and coastal ecosystems
  • Marine and coastal plant biology
  • Environmental Education and Sustainability
  • Ionic liquids properties and applications
  • Moravian Church and William Blake
  • Mercury impact and mitigation studies
  • Machine Learning in Materials Science

Ocean Conservancy
2016-2024

Bepress (United States)
2016

Moss Landing Marine Laboratories
1994

California Department of Fish and Wildlife
1994

A mess of plastic It is not clear what strategies will be most effective in mitigating harm from the global problem pollution. Borrelle et al. and Lau discuss possible solutions their impacts. Both groups found that substantial reductions plastic-waste generation can made coming decades with immediate, concerted, vigorous action, but even best case scenario, huge quantities still accumulate environment. Science , this issue p. 1515 1455

10.1126/science.aba3656 article EN Science 2020-09-17

Plastic waste affects environmental quality and ecosystem health. In 2010, an estimated 5 to 13 million metric tons (Mt) of plastic entered the ocean from both developing countries with insufficient solid infrastructure high-income very high generation. We demonstrate that, in 2016, United States generated largest amount any country world (42.0 Mt). Between 0.14 0.41 Mt this was illegally dumped States, 0.15 0.99 inadequately managed that imported materials collected for recycling....

10.1126/sciadv.abd0288 article EN cc-by Science Advances 2020-10-30

Marine litter is a growing environmental concern. With the rapid increase in global plastics production and resulting large volume of that enters marine environment, determining consequences this debris on fauna ocean health has now become critical priority, particularly for threatened endangered species. However, there are limited data about impacts species from which to draw conclusions population anthropogenic debris. To address knowledge gap, information was elicited experts ecological...

10.1016/j.marpol.2015.10.014 article EN cc-by Marine Policy 2016-01-11

We investigated microplastic (MP) contamination in 16 commonly-consumed protein products (seafoods, terrestrial meats, and plant-based proteins) purchased the United States (U.S.) with different levels of processing (unprocessed, minimally-processed, highly-processed), brands (1–4 per product type, depending on availability) store types (conventional supermarket grocer featuring mostly natural/organic products). Mean (±stdev) MP serving among was 74 ± 220 particles (ranging from 2 chicken...

10.1016/j.envpol.2023.123233 article EN cc-by-nc-nd Environmental Pollution 2023-12-28

We conducted a nationally-representative survey of United States (U.S.) adults (n=1,960) in 2021 to gather insights on the knowledge, perceptions, and concerns about threats ocean, with specific focus plastics microplastic pollution. Responses from U.S. adult group were compared highly-engaged, Ocean Conservancy members who are very attuned ocean issues (n=882). is U.S.-based nonprofit environmental advocacy working protect today’s greatest challenges. Plastic pollution was primary concern...

10.3389/fmars.2023.1323477 article EN cc-by Frontiers in Marine Science 2024-01-19

Oceans provide critical ecosystem services, but are subject to a growing number of external pressures, including overfishing, pollution, habitat destruction, and climate change. Current models typically treat stressors on species ecosystems independently, though in reality, often interact ways that not well understood. Here, we use network interaction model (OSIRIS) explicitly study stressor interactions the Chukchi Sea (Arctic Ocean) due its extensive climate-driven loss sea ice accelerated...

10.1038/s41467-020-19899-z article EN cc-by Nature Communications 2020-12-07

Cleaning up plastic pollution is one of three interventions scientists agree are necessary to address our global crisis. There much work be done curb production and improve waste management, but how can we effectively bolster public participation in cleanups achieve this lofty goal? Powered by robust scientific models, Ocean Conservancy’s Wildlife Impact Calculator tool illuminates the real-life positive impacts individual coastal on marine megafauna including sea turtles, seabirds mammals....

10.5194/oos2025-750 preprint EN 2025-03-25

Abstract Models of human dimensions fisheries are important to understanding and predicting how fishing industries respond changes in marine ecosystems management institutions. Advances computation have made it possible construct agent‐based models (ABMs)—which explicitly describe the behaviour individual people, firms or vessels order understand predict their aggregate behaviours. ABMs widely used for both academic applied purposes many settings including finance, urban planning military,...

10.1111/faf.12447 article EN Fish and Fisheries 2020-02-28

Environmental Toxicology and ChemistryVolume 36, Issue 9 p. 2259-2265 ET&C Perspectives Microplastics in the aquatic environment—Perspectives on scope of problem Robert M. Burgess, Corresponding Author Burgess burgess.robert@epa.gov orcid.org/0000-0003-4504-5125 Office Research Development, National Health Effects Laboratory, Atlantic Ecology Division, US Protection Agency, Narragansett, Rhode Island Address correspondence to burgess.robert@epa.govSearch for more papers by this authorKay T....

10.1002/etc.3867 article EN Environmental Toxicology and Chemistry 2017-08-31

Demand for critical minerals is projected to double or even triple by 2030 as the global energy and transportation sectors transition away from fossil fuels toward renewable energy. This anticipated demand raises interest in new mineral resources, including marine minerals, supplement future supplies. While environmental benefits of transitioning green are many, there inherent costs. In this study, we compiled broad-scale datasets prominent features human uses within four deep ocean regions...

10.3389/fmars.2023.1213424 article EN cc-by Frontiers in Marine Science 2023-08-09

Models of human dimensions fisheries are important to understanding and predicting how fishing industries respond changes in marine ecosystems management institutions. Advances computation have made it possible construct agent-based models (ABMs)—which explicitly describe the behaviour individual people, firms, or vessels order understand predict their aggregate behaviours. ABMs widely used for both academic applied purposes many settings including finance, urban planning, military, but not...

10.31235/osf.io/gzhm5 article EN 2018-11-16
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