A5011317017- Fecal contamination and water quality
- Microplastics and Plastic Pollution
- Microbial Community Ecology and Physiology
- Aquatic Invertebrate Ecology and Behavior
- Wastewater Treatment and Reuse
- Water Quality and Pollution Assessment
- Nanoparticles: synthesis and applications
- Toxic Organic Pollutants Impact
- Protist diversity and phylogeny
- Environmental remediation with nanomaterials
- Environmental Toxicology and Ecotoxicology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Mercury impact and mitigation studies
- Wastewater Treatment and Nitrogen Removal
- Mine drainage and remediation techniques
- Municipal Solid Waste Management
- Constructed Wetlands for Wastewater Treatment
- Environmental Justice and Health Disparities
- Pharmaceutical and Antibiotic Environmental Impacts
- Water Quality Monitoring Technologies
- Marine Bivalve and Aquaculture Studies
- Aquaculture disease management and microbiota
- Effects and risks of endocrine disrupting chemicals
- Urban Stormwater Management Solutions
- Water resources management and optimization
Smith College
2019-2025
École Polytechnique Fédérale de Lausanne
2025
Stanford University
2013-2016
U.S. National Science Foundation
2013
Temple University
2013
Treatment wetlands have become an attractive option for the removal of nutrients from municipal wastewater effluents due to their low energy requirements and operational costs, as well ancillary benefits they provide, including creating aesthetically appealing spaces wildlife habitats. also hold promise a means removing other wastewater-derived contaminants, such trace organic contaminants pathogens. However, concerns about variations in treatment efficacy these pollutants, coupled with...
Uptake of seven contaminants regularly detected in surface waters and spanning a range hydrophobicities (log Dow −1 to 5) was studied for two species freshwater bivalves, the native mussel Anodonta californiensis invasive clam Corbicula fluminea. Batch systems were utilized determine compound partitioning, flow-through systems, comparable environmental conditions effluent dominated waters, used uptake depuration kinetics. compounds independent bivalve type. Log bioconcentration factor (BCF)...
Sunlight disinfection is an important inactivation process for enteric viruses in water. Understanding how dark biotic processes, such as zooplankton filter feeding, impact sunlight has implications public health. This research quantifies the uptake of MS2, a model viruses, by feeder Branchionus plicatilis (rotifer) and effects on subsequent MS2. Experiments co-incubating MS2 with rotifers showed 2.6 log viral removal over 120 hours. Viable virus was recovered from rotifer bodies after...
Oceans cover most of the planet and 60% world's population lives near coast. Anthropogenic activities along coastlines in open ocean have placed oceans peril. According to a Pew Commission Report, among greatest threats are land-based runoff from coastal development, nutrient pollution, overfishing, invasive species. Here, we describe due microbial, nutrient, chemical, plastic pollution addition declining biodiversity fundamental applied research needed mitigate threats. While needs diverse,...
High levels of fecal indicator bacteria, such as Escherichia coli, can be indicative poor water quality. The use shellfish to reduce eutrophication has been proposed, but application bivalves bacterial not extensively reported. Removal E. coli by the native freshwater mussel Anodonta californiensis was studied using laboratory batch systems and field-based flow-through systems. Batch were utilized determine fate inactivation after uptake mussel. experiments demonstrated that patterns...
Fecal indicator bacteria (FIB) are leading causes of impaired surface waters. Innovative and environmentally appropriate best management practices needed to reduce FIB concentrations associated risk. This study examines the ability native freshwater mussel Anodonta californiensis an invasive clam Corbicula fluminea Escherichia coli in natural Laboratory batch experiments were used show bivalve species-specific E. removal capabilities develop a relationship between size clearance rates. A...
The fecal indicator bacterial species Escherichia coli is an important measure of water quality and a leading cause impaired surface waters. We investigated the impact filter-feeding metazooplankton Daphnia magna on inactivation E. clearance rates these daphnids were calculated from series batch experiments conducted under variable environmental conditions. Batch system 24 to 48 h in duration completed test impacts concentration, organism density, temperature, type. maximum rate for adult D....
Waterborne viruses are responsible for numerous diseases and abundant in aquatic systems. Understanding the fate of natural systems has important implications human health. This research quantifies uptake bacteriophage T4 enteric virus echovirus 11 when exposed to filter feeders Tetrahymena pyriformis Daphnia magna, also examines potential viral transfer due trophic interactions. Experiments co-incubating each species with over 72-96 h showed up a 4 log removal T. pyriformis, while direct by...
Zooplankton can significantly impact <italic>E. coli</italic> inactivation in wastewater, but rates are dependent on environmental conditions.
Polychlorinated biphenyls (PCBs) are documented endocrine-disrupting chemicals. This study examined the bioaccumulation of PCBs and utility chorioallantoic membrane (CAM) as a non-lethal sampling technique for PCB analysis in northern diamondback terrapin (Malaclemys terrapin), species endemic to US East Coast salt marshes. To determine viability CAM surrogate burdens within this species, maternal transfer egg samples was studied. Egg were collected from populations Cape May County, NJ...
Abstract Treatment wetlands utilize various physical and biological processes to reduce levels of organic contaminants, metals, bacteria, suspended solids. Silver nanoparticles (AgNPs) are one type contaminant that can enter treatment impact the overall efficacy. Grazing by filter-feeding zooplankton, such as Daphnia magna, is critical wetland functioning; but effects AgNPs on zooplankton not fully understood, especially at environmentally relevant concentrations. We characterized...
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]Undergraduate Water Research at Smith College: Experiments, Field Work, ModelingAuthorsAndrewGuswaiDNiveenIsmailAmyRhodesSee all authors Andrew GuswaiDCorresponding Author• Submitting AuthorSmith CollegeiDhttps://orcid.org/0000-0002-4651-6606view email addressThe was not providedcopy addressNiveen IsmailSmith Collegeview addressAmy RhodesSmith address