A5014642233- Mercury impact and mitigation studies
- Isotope Analysis in Ecology
- Marine animal studies overview
- Avian ecology and behavior
- Ecology and Vegetation Dynamics Studies
- Turtle Biology and Conservation
- Wildlife Ecology and Conservation
- Heavy Metal Exposure and Toxicity
- Rangeland and Wildlife Management
- Forensic Anthropology and Bioarchaeology Studies
- Bird parasitology and diseases
- Air Quality and Health Impacts
- Marine and fisheries research
- Economic and Environmental Valuation
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Wildlife Conservation and Criminology Analyses
- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Crystal Structures and Properties
- Fish biology, ecology, and behavior
- Plant and animal studies
- Toxic Organic Pollutants Impact
- Conservation, Ecology, Wildlife Education
- Heavy metals in environment
Weber State University
2019-2024
Southeast Missouri State University
2015-2018
University of North Carolina at Greensboro
2015
University of North Carolina Wilmington
2006-2014
William & Mary
2007-2010
Randolph College
2010
University of Genoa
1993
Mercury has contaminated rivers worldwide, with health consequences for aquatic organisms and humans who consume them. Researchers have focused on birds as sentinels mercury. However, trophic transfer between adjacent ecosystems could lead to the export of mercury terrestrial habitats. Along a mercury-contaminated river in Virginia, United States, had significantly elevated levels their blood, similar aquatic-feeding counterparts. Diet analysis revealed that spiders delivered much dietary We...
Penguins face a wide range of threats. Most observed population changes have been negative and happened over the last 60 years. Today, populations 11 18 penguin species are decreasing. Here we present review that synthesizes details threats faced by world's penguins. We discuss alterations to their environment at both breeding sites on land sea where they forage. The major drivers change appear be climate, food web marine fisheries. In addition, also consider other critical and/or emerging...
Abstract Cinnabar is a natural mercury sulfide (HgS) mineral of volcanic or hydrothermal origin that found worldwide. It has been mined prehistorically and historically in China, Japan, Europe the Americas to extract metallic (Hg 0 ) for use metallurgy, as medicinal, preservative red pigment body paint ceramics. Processing cinnabar via combustion releases Hg vapor can be toxic if inhaled. Mercury from also absorbed through gut skin, where it accumulate organs bone. Here, we report moderate...
Compared to the extensive research on aquatic ecosystems, very little is known about sources and trophic transfer of methylmercury (MeHg) in terrestrial ecosystems. In this study, we examine energy flow structure using stable carbon (δ13C) nitrogen (δ15N) isotope ratios, respectively, MeHg levels basal resources invertebrates from four temperate forest We show that biota increased significantly ( p < 0.01) with δ13C δ15N at all sites, implying importance both microbially processed diets...
The authors hypothesized that the catastrophic annual molt of penguins (Sphenisciformes) would lead to reduced intraindividual variation mercury concentrations in body feathers. While mean varied significantly among 8 penguin species, variability did not differ species and was 3 times lower than values observed other seabirds. findings present study suggest a single feather collected at random per individual can be adequate estimate exposure population level penguins.
Abstract When female birds lay eggs, some of their body burden mercury is eliminated into each egg, potentially leading to declining across the clutch. However, there was no decline in with laying sequence clutches tree swallow ( Tachycineta bicolor ) eggs at a mercury‐contaminated site, presumably due daily replenishment females during laying. Sampling just one egg from nest provided an accurate measure clutch contamination. Environ. Toxicol. Chem. 2010;29:1155–1159. © 2010 SETAC
Double brooding is the initiation of a second clutch eggs after successfully raising young from first clutch. Migratory birds that nest in temperate North America are often single-brooded, but there widespread intra- and interspecific variation. Tree Swallows (Tachycineta bicolor), which becoming model species biology, typically classified as single-brooded species. We documented 18 cases double population recently established Shenandoah Valley, Virginia. may be underreported this or...
ABSTRACT The success of ornithological studies often hinges on a researcher's ability to capture individuals quickly and efficiently. Sometimes it is necessary the same individual multiple times, as case in many metabolic, ecotoxicological, immunocompetence studies. Several methods capturing cavity-nesting birds at their nest boxes have been described. However, these proved inefficient when attempting catch wary that had already captured previously. Here we describe simple inexpensive method...
Abstract Songbirds incidentally ingest soil contaminated with lead and several species in the Southeast Missouri Lead Mining District have a negative relationship between concentration reproduction. We used an individual-based model (IBM) to simulate nesting processes throughout breeding season estimate annual productivity for 5 songbirds relation soil-lead concentration. modeled daily nest survival number fledged incorporated these relationships into IBM using Bayesian approach that fully...
First posted August 11, 2023 For additional information, contact: Director, Columbia Environmental Research CenterU.S. Geological Survey4200 New Haven RoadColumbia, MO 65201Contact Pubs Warehouse Lead mining in the Southeast Missouri Mining District began 1700s and continued for nearly 300 years; waste piles associated with smelting, mining, milling of lead ores have released metal residues that contaminated soil water region. Previous studies district indicated potential harm to wildlife,...