A5085852901- Avian ecology and behavior
- Mercury impact and mitigation studies
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Marine animal studies overview
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Primate Behavior and Ecology
- Animal Vocal Communication and Behavior
- Bird parasitology and diseases
- Rangeland and Wildlife Management
- Heavy Metal Exposure and Toxicity
- Air Quality and Health Impacts
- Wildlife Conservation and Criminology Analyses
- Fish Ecology and Management Studies
- Identification and Quantification in Food
- Turtle Biology and Conservation
- Shakespeare, Adaptation, and Literary Criticism
- Media, Gender, and Advertising
- Toxic Organic Pollutants Impact
- Turfgrass Adaptation and Management
- Fire effects on ecosystems
- Amphibian and Reptile Biology
- Peatlands and Wetlands Ecology
- Memory and Neural Mechanisms
William & Mary
2013-2024
Williams (United States)
2013-2024
Virginia Tech
2009
Cornell University
2005
University of Oxford
1996
Indiana University Bloomington
1990-1995
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...
Incorporation of global climate change (GCC) effects into assessments chemical risk and injury requires integrated examinations nonchemical stressors. Environmental variables altered by GCC (temperature, precipitation, salinity, pH) can influence the toxicokinetics absorption, distribution, metabolism, excretion as well toxicodynamic interactions between chemicals target molecules. In addition, challenges processes critical for coping with external environment (water balance,...
Despite mounting evidence of mercury accumulation in terrestrial ecosystems, few data exist on how environmental exposure affects reproductive success free-living songbirds. From 2007 through 2010, we monitored Carolina Wrens (Thryothorus ludovicianus) breeding along the forest floodplain two mercury-contaminated rivers Virginia. Using an information-theoretic approach, found a 34% reduction nesting sites when compared with reference sites. Blood concentration attending female was strong...
Much of the research on sublethal, adverse effects mercury (Hg) has focused impairment neurological function and reproduction in fish fish-eating vertebrates. Here we examined associations between Hg endocrine (adrenocortical responses plasma thyroid hormone concentrations) insectivorous tree swallow nestlings adjacent to a Hg-contaminated river nearby reference rivers Virginia. Nestlings from contaminated sites had blood concentrations that exceeded those by more than an order magnitude...
Recent evidence suggests that mercury exposure has negative effects on the health of songbirds, and species forage in wetlands may be at a greater risk bioaccumulation than are those other habitats. We examined concentrations blood feathers from wetland obligate rapidly declining Rusty Blackbird (Euphagus carolinus) five regions across North America: three wintering areas contiguous United States breeding western boreal forests Alaska Acadian northeastern America. In blood, Blackbirds forest...
Mercury is a global pollutant that biomagnifies in food webs, placing wildlife at risk of reduced reproductive fitness and survival. Songbirds are the most diverse branch avian evolutionary tree; many suffering persistent serious population declines we know songbirds frequently exposed to mercury pollution. Our objective was determine effects environmentally relevant doses on success throughout their lives or only as adults. The two modes exposure simulated philopatric species versus...
Dynamics of mercury in feathers and blood free-living songbirds is poorly understood. Nestling eastern bluebirds (Sialia sialis) living along the mercury-contaminated South River (Virginia, USA) had levels an order magnitude lower than their parents (nestling: 0.09 +/- 0.06 mg/kg [mean standard deviation], n = 156; adult: 1.21 0.57 mg/kg, 86). To test whether this low was result sequestration rapidly growing feathers, we repeatedly sampled juveniles throughout period feather growth molt....
Mercury is a toxic heavy metal that can cause obvious physiological and reproductive problems in animals. Very little known, however, about its subtle behavioral effects. We examined whether birds inhabited mercury-contaminated sites exhibited differences singing behavior compared with at uncontaminated reference nearby. recorded the songs of 3 oscines, Carolina Wren (Thryothorus ludovicianus), House (Troglodytes aedon), Song Sparrow (Melospiza melodia), 1 suboscine, Eastern Phoebe (Sayornis...
Abstract The pollutant methylmercury accumulates within lean tissues of birds and other animals. Migrating catabolize substantial amounts tissue during flight which may mobilize increase circulating levels this neurotoxin. As a model for migrating songbird, we fasted zebra finches ( Taeniopygia guttata ) that had been dosed with 0.0, 0.1, 0.6 parts per million (ppm) dietary measured changes in blood total mercury concentrations (THg) relation to reductions mass. Birds lost 6–16% their mass...
Some species of birds store food, often hoarding several hundreds seeds over a period just few weeks. Field and laboratory studies have demonstrated that food‐storing an impressive memory enlarged region the brain, hippocampal region. Lesion experiments shown hippocampus is important in accurate retrieval stored food. Taken together, these results led to hypothesis associated with requirements retrieving In this review, we discuss four areas study: comparative behaviour, developmental...