Mi-Ling Li

Mi-Ling Li
University of Delaware | UDel UD · College of Earth, Ocean, and Environment

Sc.D.

About

29
Publications
5,719
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446
Citations
Introduction
Dr. Mi-Ling Li is an environmental scientist with broad interests in the linkages between aquatic ecosystems and human health. I develop and use novel tools for assessing pollution sources and investigating foraging habitats and migration patterns of animals.
Additional affiliations
July 2016 - August 2017
Harvard University
Position
  • Fellow
September 2011 - May 2016
Harvard University
Position
  • S.D. student
August 2008 - August 2011
University of Michigan
Position
  • Master's Student

Publications

Publications (29)
Article
Full-text available
High levels of methylmercury (MeHg) have been reported in Arctic marine biota, posing health risks to wildlife and human beings. Although MeHg concentrations of some Arctic species have been monitored for decades, the key environmental and ecological factors driving temporal trends of MeHg are largely unclear. We develop an ecosystem-based MeHg bio...
Article
Full-text available
Monitoring mercury (Hg) levels in biota is considered an important objective for the effectiveness evaluation of the Minamata Convention. While many studies have characterized Hg levels in organisms at multiple spatiotemporal scales, concentration analyses alone often cannot provide sufficient information on the Hg exposure sources and internal pro...
Article
Nearshore systems play an important role as mercury (Hg) sources to the open ocean and to human health via fish consumption. The nearshore system along East Asia is of particular concern given the rapid industrialization, which contributes to significant anthropogenic Hg emissions and releases. We used Hg stable isotopes to characterize Hg sources...
Article
Selenium (Se), which can be both hazardous and beneficial to plants, animals and humans, plays a pivotal role in regulating soil-plant-human ecosystem functions. The biogeochemical behavior of Se and its environmental impact on the soil-plant-human system has received broad attention in the last decades. This review provides a comprehensive underst...
Article
Marine fisheries in African waters contribute substantially to food security and local economies in African coastal nations. Recently, there are growing concerns about the sustainability of living marine resources in these countries’ exclusive economic zones (EEZs) due to increased risks from climate change, pollution and potential over‐exploitatio...
Article
Full-text available
Early-career scientists from the AGU Mentoring Network discuss how the global pandemic has exacerbated long-standing issues with the availability of positions in and the diversity of the geosciences. By Miling Li, Nicholas A. Sutfin, Margaret Christie, Maheshwari Neelam, and James A. Bradley 6 November 2020 The COVID-19 pandemic has drastically s...
Article
Mercury isotope ratios in fish tissues have been used to infer sources and biogeochemical processes of mercury in aquatic ecosystems. More experimental studies are however needed to understand the internal dynamics of mercury isotopes and to further assess the feasibility of using fish mercury isotope ratios as a monitoring tool. We exposed Olive f...
Article
Industrial lead (Pb) emissions have changed oceanic Pb concentrations and isotopic compositions significantly over the last century. Asian industrial emissions are currently the dominant Pb sources in the northwest and central Pacific Ocean. This study investigated major Pb sources in the northeast Pacific Ocean (inland, coastal, and open ocean), w...
Article
High exposures of mammalian species to inorganic mercury (HgII) and methylmercury (MeHg) have been associated with adverse effects on behavior and reproduction. Different mammalian species exhibit varying responses to similar external exposure levels, reflecting potential differences in Hg toxicokinetics. Here, we use Hg stable isotopes, total Hg,...
Article
The distributions of primary amino acids, MeHg and IHg in body tissues of two commonly farm-raised fish species (common carp: Cyprinus carpio; grass carp: Ctenopharyngodon idellus) in Guizhou Province, SW China, were investigated to understand the effects of primary amino acids on MeHg and IHg metabolism in farm-raised fish. The primary amino acids...
Article
Exposure to poly- and perfluoroalkyl substances (PFASs) has been linked to many negative health impacts in humans and wildlife. Unlike neutral hydrophobic organic pollutants, many PFASs are ionic and have been hypothesized to accumulate in both phospholipids and protein-rich tissues. Here we investigate the role of phospholipids for PFAS accumulati...
Article
Methylmercury (MeHg) is a central nervous system toxicant and exposures can adversely affect the health of marine mammals. Mercuric selenide (HgSe) in marine mammal tissues is hypothesized to result from a protective detoxification mechanism, but toxicokinetic processes contributing to its formation are poorly understood. Here, new data is reported...
Presentation
Rapid developments in the emerging field of urban geochemistry warrant the use of trace element and isotopic analyses on a number of key bioindicators to determine source apportionment, transport, and fate of (heavy) metal pollutants. Honey from the European honey bee (Apis mellifera) has long been used as a bioindicator to assess environmental exp...
Article
Full-text available
Pelagic ecosystems are changing due to environmental and anthropogenic forces, with uncertain consequences for the ocean’s top predators. Epipelagic and mesopelagic prey resources differ in quality and quantity, but their relative contribution to predator diets has been difficult to track. We measured mercury (Hg) stable isotopes in young (<2 years...
Article
Full-text available
Background: Methylmercury (MeHg) exposure is associated with adverse effects on neurodevelopment and cardiovascular health. Previous work indicates most MeHg is from marine fish sold in the commercial market, but does not fully resolve supply regions globally. This information is critical for linking changes in environmental MeHg levels to human e...
Article
Exposure to contaminants in fish may be associated with adverse health outcomes even as fish consumption is generally considered beneficial. Risk assessments conducted to support regulatory analyses rely on quantitative fish consumption estimates. Here we report the results of a national survey of high-frequency fish consumers (n = 2099) based on a...
Article
Full-text available
Developing Canadian hydroelectric resources is a key component of North American plans for meeting future energy demands. Microbial production of the bioaccumulative neurotoxin methylmercury (MeHg) is stimulated in newly flooded soils by degradation of labile organic carbon and associated changes in geochemical conditions. We find all 22 Canadian h...
Article
Full-text available
Methylmercury (MeHg) exposure can cause adverse reproductive and neurodevelopmental health effects. Estuarine fish may be exposed to MeHg produced in the terrestrial environment, benthic sediment and the marine water column but the relative importance of each source is poorly understood. We measured stable isotopes of mercury (δ²⁰²Hg, Δ¹⁹⁹Hg, and Δ...
Article
Full-text available
Abstract Methylmercury (MeHg) exposure can cause adverse health effects in children and adults and is predominantly from seafood consumption in the United States (U.S.). Here we examine evidence for differences in MeHg uptake and metabolism in U.S. individuals who consume three or more fish meals per week. We hypothesized based on prior research th...
Article
Seafood consumption is the primary route of methylmercury (MeHg) exposure for most populations. Inherent uncertainties in dietary survey data point to the need for an empirical tool to confirm exposure sources. We therefore explore the utility of Hg stable isotope ratios in human hair as a new method for discerning MeHg exposure sources. We charact...
Article
This research examined the interaction between dissolved copper and phosphorus, with respect to their effects on the freshwater amphipod Hyalella azteca feeding on periphyton. Field-collected periphyton communities were exposed to different nutrient and metal conditions in indoor recirculating streams. H. azteca were then exposed to water and perip...
Article
Eutrophication is known to be frequently associated with metal pollution in aquatic ecosystems. This research examined the interaction between dissolved copper and phosphorus, with respect to their effects on the growth of a freshwater amphipod Hyalella azteca feeding on periphyton. The study design included two tiers: (1) a laboratory stream exper...

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Projects

Projects (5)
Archived project
Session ID: 75036 Session Title: GH011. Geochemistry to Health: Linking Geoscience to Exposures and Health Impacts of Nutrients and Toxicants Section: GeoHealth Session description Both metals and organic chemicals are released to the environment via natural and anthropogenic activities. Many of them are pollutants that pose harmful effects on ecosystem and human health (e.g., Pb, Hg, PFCs, PAHs). Others (e.g., Se, fatty acids) are essential for living organisms within certain intake ranges. Physicochemical properties and biogeochemical cycling of these chemicals govern their bioavailability and impacts on ecosystem and human health. The influences of global change like climate change, natural disaster, urbanization, and new policies and technologies could significantly alter the extent of chemical exposure and health impacts at genetic, organism, population to ecosystem levels. This session will bring together environmental scientists, ecologists, geoscientists, and epidemiologists under the discussion of “Geohealth”. We welcome presentations covering new advancements in linking environmental sources and biogeochemical processes to health relevant impacts of any toxicants or nutrients, with particular interests in studies looking at the influence of global changes.
Project
We are investigating the mechanism for metabolizing metal and organic contaminants in fish and mammalian species using stable isotopes, analytical chemistry, and toxicokinetic models.