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Records 1 to 25 of 154

Increased Use of Bayesian Network Models Has Improved Environmental Risk Assessments
(JOURNAL) [Published : Jan 01, 2021]
Environmental or ecological risk assessment (ERA) is defined as the process for evaluating how likely it is that the environment may be impacted as a result of exposure to stressors. Although this definition implies the calculation of probabilities, risk assessments traditionally...
SWAT model application for evaluating agricultural conservation practice effectiveness in reducing phosphorous loss from the Western Lake Erie Basin
(JOURNAL) [To be published : Jan 15, 2022]
Lake Erie is threatened by eutrophication and harmful algal blooms due to excess nutrient loading from agricultural sources. Agricultural conservation practices (ACPs) have been developed and implemented to reduce nutrient losses but estimating ACP effectiveness is challenging. T...
Context is Everything: Interacting Inputs and Landscape Characteristics Control Stream Nitrogen.
(JOURNAL) [Published : Jun 01, 2021]
Assessing the effectiveness of actions designed to improve water quality requires adequate monitoring of aquatic ecosystems paired with information about landscape and climate drivers. To understand spatial and temporal trends in stream total nitrogen (TN) concentrations across t...
Resilience of Terrestrial and Aquatic Fauna to Historical and Future Wildfire Regimes in Western North American Forests
(JOURNAL) [Published : Sep 01, 2021]
Forests in western North America are following a trajectory toward larger, more severe, and more frequent wildfires. These changes in wildfire disturbance regimes are responses to climate trends and changes in fire suppression policies. In response, forests and associated faunal ...
Monthly River Temperature Trends Across the US Confound Annual Changes
(JOURNAL) [Published : Sep 16, 2021]
Climate variations and human modifications of the water cycle continue to alter the Earth's surface water and energy exchanges. It is therefore critical to ascertain how these changes impact water quality and aquatic ecosystem habitat metrics such as river temperatures. Though ri...
Forest Riparian Buffers Reduce Timber Harvesting Effects on Stream Temperature, but additional Climate Adaptation Strategies are likely needed under future conditions
(JOURNAL) [Published : Jan 01, 2021]
Stream water temperature imposes metabolic constraints on the health of cold-water fish like salmonids. Timber harvesting can reduce stream shading leading to higher water temperatures, while also altering stream hydrology. In the Pacific Northwest, riparian buffer requirements a...
AGRICULTURAL BEST MANAGEMENT PRACTICE SENSITIVITY TO CHANGING AIR TEMPERATURE AND PRECIPITATION
(JOURNAL) [Published : Jan 02, 2019]
Agricultural best management practices (BMPs) reduce non-point source pollution from cropland. Goals for BMP adoption and expected pollutant load reductions are often specified in water quality management plans to protect and restore waterbodies; however, estimates of needed load...
Integrating Inland and Coastal Water Quality Data for Actionable Knowledge
(JOURNAL) [Published : Jul 23, 2021]
Water quality measures for inland and coastal waters are available as discrete samples from professional and volunteer water quality monitoring programs and higher-frequency, near-continuous data from automated in situ sensors. Water quality parameters also are estimated from mod...
Satellite remote sensing to assess cyanobacterial bloom frequency across the United States at multiple spatial scales
(JOURNAL) [Published : Sep 01, 2021]
Cyanobacterial blooms can have negative effects on human health and local ecosystems. Field monitoring of cyanobacterial blooms can be costly, but satellite remote sensing has shown utility for more efficient spatial and temporal monitoring across the United States. Her...
Examining the impacts of increased corn production on groundwater quality using a coupled modeling system
(JOURNAL) [Published : May 15, 2017]
This study demonstrates the value of a coupled chemical transport modeling system for investigating groundwater nitrate contamination responses associated with nitrogen (N) fertilizer application and increased corn production. The coupled Community Multiscale Air Quality Bidirect...
Sensitivity of lake thermal and mixing dynamics to climate change
(JOURNAL) [Published : Jan 19, 2015]
Warming-induced changes in lake thermal and mixing regimes present risks to water quality and ecosystem services provided by U.S. lakes and reservoirs. Modulation of responses by different physical and hydroclimatic settings are not well understood. We explore the potential effec...
Satellite Ocean Colour: Current Status and Future Perspective
(JOURNAL) [Published : Aug 29, 2019]
Spectrally resolved water-leaving radiances (ocean colour) and inferred chlorophyll concentration are key to studying phytoplankton dynamics at seasonal and inter-annual scales, for a better understanding of the role of phytoplankton in marine biogeochemistry; the global carbon c...
Increasingly severe cyanobacterial blooms and deep water hypoxia coincide with warming water temperatures in reservoirs
(JOURNAL) [Published : May 07, 2021]
Cyanobacterial blooms are expected to intensify and become more widespread with climate change and sustained nutrient pollution, subsequently increasing threats to lentic ecosystems, water quality, and human health. However, little is known about their rates of change because lon...
Modeling the Effects of Future Hydroclimatic Conditions on Microbial Water Quality and Management Practices in Two Agricultural Watersheds
(JOURNAL) [Published : Jan 01, 2020]
Anticipated future hydroclimatic changes are expected to alter the transport and survival of fecally sourced waterborne pathogens, presenting an increased risk of recreational water quality impairments. Managing future risk requires an understanding of the interactions between fe...
Using Multiobjective Optimization to Inform Green Infrastructure Decisions as Part of Robust Integrated Water Resources Management Plans
(JOURNAL) [Published : Mar 23, 2021]
Uncertainty in the impacts of climate change and development on freshwater resources pose significant challenges for management of freshwater resources. Integrated and adaptive approaches to water management are a promising means of addressing uncertainty that afford flexibility ...
Tidally Forced Saltwater Intrusions might Impact the Quality of Drinking Water, the Valdivia River (40°S) – Chile Estuary Case
(JOURNAL) [Published : Aug 26, 2020]
The Valdivia River estuary (VRE) located in south-central Chile is known as one of the largest estuarine ecosystems on the Pacific coast. This research aims to determine the intra-tidal and sub-tidal variability of saline intrusions into the VRE between November 2017 and March 20...
National framework for ranking lakes by potential for anthropogenic hydro-alteration.
(JOURNAL) [Published : Jan 01, 2021]
Lake ecosystems face multiple disturbances and environmental change that can significantly impact lake hydrology. Human activities in the watershed (e.g., irrigated agriculture) and managed dams can alter lake inflows and outflows beyond natural ranges and changing climate condi...
Adapting urban best management practices for resilience to long-term environmental changes
(JOURNAL) [Published : Dec 01, 2020]
Stormwater best management practices (BMPs) help mitigate the adverse effects of urban development on stream hydrology and water quality, and are widely specified in development requirements and watershed management plans. However, design of stormwater BMPs largely relies on expe...
Trihalomethane precursor reactivity changes in drinking water treatment unit processes during a storm event
(JOURNAL) [Published : Nov 01, 2019]
Source water quality greatly impacts the efficacy of water treatment unit processes and the formation of trihalomethanes (THMs) such as chloroform and bromoform. Current models of water treatment plant performance may not accurately capture how source water quality variation, suc...
Surveillance for harmful algal bloom events and associated human and animal illnesses—One Health Harmful Algal Bloom System, United States, 2016—2018
(JOURNAL) [Published : Dec 18, 2020]
Harmful algal bloom (HAB) events can result from the rapid growth, or bloom, of photosynthesizing organisms in natural waterbodies. HAB events can be exacerbated by nutrient pollution and a warming climate (1) and can negatively impact the health of humans, animals, and the envir...
Reconstruction of Sea-Land Interactions between Terrestrial Vegetation Cover and Water Quality Constituents in the Mattapoisett Harbor Area During the 1991 Hurricane Bob Event
(JOURNAL) [Published : Nov 12, 2019]
Hurricane Bob passed over the New England region in August 1991, causing significant damage to life, property, and the environment, making it one of the costliest hurricanes in New England history. The environmental impact of a hurricane of this magnitude warrants careful assessm...
Factors influencing carbon stocks and accumulation rates in eelgrass meadows across New England, USA
(JOURNAL) [Published : Dec 01, 2020]
Increasing the protection of coastal vegetated ecosystems has been suggested as one strategy to compensate for increasing carbon dioxide (CO2) in the atmosphere as the capacity of these habitats to sequester and store carbon exceeds that of terrestrial habitats. Seagrasses are a ...
Managing climate refugia for freshwater fishes under an expanding human footprint
(JOURNAL) [Published : Jun 01, 2020]
Within the context of climate adaptation planning, the concept of climate refugia has emerged as a potential framework for addressing future threats to cold-water fish populations. Our aim is to evaluate recent cold-water refugia management efforts within the context of human wat...
Sediment retention by natural landscapes in the conterminous United States
(JOURNAL) [Published : Nov 01, 2020]
Soil functions provide vital ecosystem services, from sequestering carbon to providing food and moderating floods. Soil erosion threatens the provisioning of these services while deteriorating downstream water quality. Vegetation plays an important role in soil retention – by hol...
Submerged Vegetation Responses to Climate Variation and Altered Hydrology in a Subtropical Estuary: Interpreting 33 Years of Change
(JOURNAL) [Published : Mar 13, 2020]
Links between hydrologic modifications, flow and salinity regimes, and submerged aquatic vegetation (SAV) species composition and abundance were assessed with an empirical analysis of 33 years of monitoring data collected at nine sites in Florida’s Caloosahatchee River Estu...