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Air Research Products in the Science Inventory

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Records 1 to 25 of 168

A web-based tool for assessing the condition of benthic diatom assemblages in streams and rivers of the conterminous United States
(JOURNAL) [Published : Jan 04, 2022]
We used a data-driven approach in which all-possible combinations of 2-7 metrics were compared for three measures of performance. After ranking the best-performing MMIs, we selected the final MMIs by evaluating stress-response relations in independent regional datasets of diatom ...
Temporal Stability of Seagrass Extent, Leaf Area, and Carbon Storage in St. Joseph Bay, Florida: a Semi-automated Remote Sensing Analysis
(JOURNAL) [Published : Nov 01, 2022]
Seagrasses are globally recognized for their contribution to blue carbon sequestration. However, accurate quantification of their carbon storage capacity remains uncertain due, in part, to an incomplete inventory of global seagrass extent and assessment of its temporal variabilit...
Riparian vegetation shade restoration and loss effects on recent and future stream temperatures
(JOURNAL) [Published : Sep 01, 2022]
River temperatures are expected to increase this century harming species requiring cold-water habitat unless restoration activities protect or improve habitat availability. Local shading by riparian vegetation can cool water temperatures, but uncertainty exists over the scaling o...
A web-based tool for assessing the condition of benthic diatom assemblages in streams and rivers of the conterminous United States
(JOURNAL) [Published : Jan 04, 2022]
Benthic diatom assemblages are known to be indicative of water quality but have yet to be widely adopted in biological assessments in the United States due to several limitations. To overcome some of these limitations, we aggregated bioassessment data from two national-scale Fede...
Modeling Streamflow and Water Quality Sensitivity to Climate Change and Urban Development in 20 U.S. Watersheds.
(JOURNAL) [Published : Oct 01, 2015]
Watershed modeling in 20 large, United States (U.S.) watersheds addresses gaps in our knowledge of streamflow, nutrient (nitrogen and phosphorus), and sediment loading sensitivity to mid-21st Century climate change and urban/residential development scenarios. Use of a consistent ...
Property values and cyanobacterial algal blooms: Evidence from satellite monitoring of Inland Lakes
(JOURNAL) [Published : Sep 01, 2022]
We examine how the frequency of cyanobacterial harmful algal blooms (cyanoHABs) generates economic costs through the mechanism of residential property values. We assemble nearly two decades worth of nationwide data on property sales near US inland lakes along as well as...
Spatiotemporal variability in Swedish lake ecosystems
(JOURNAL) [Published : Mar 21, 2022]
Studying ecosystem dynamics is critical to monitoring and managing linked systems of humans and nature. Due to the growth of tools and techniques for collecting data, information on the condition of these systems is more widely available. While there are a variety of approaches f...
Satellites quantify the spatial extent of cyanobacterial blooms across the United States at multiple scales
(JOURNAL) [Published : Jul 01, 2022]
Previous studies indicate that cyanobacterial harmful algal bloom (cyanoHAB) frequency, extent, and magnitude have increased globally over the past few decades. However, little quantitative capability is available to assess these metrics of cyanoHABs across broad geographic scale...
Linking multi-media modeling with machine learning to assess and predict lake chlorophyll a concentrations
(JOURNAL) [Published : Dec 13, 2021]
Eutrophication and excessive algal growth pose a threat on aquatic organisms and the health of the public, environment, and the economy. Understanding what drives excessive algal growth can inform mitigation measures and aid in advance planning to minimize impacts....
Regional patterns and drivers of total nitrogen trends in the Chesapeake Bay watershed: Insights from machine learning approaches and management implications
(JOURNAL) [Published : Apr 09, 2022]
Nutrient enrichment is a major issue to many inland and coastal waterbodies worldwide, including Chesapeake Bay. River water quality integrates the spatial and temporal changes of watersheds, thus monitoring forms the foundation for disentangling the effects of anthropogenic inpu...
Biological assessment of western USA sandy bottom rivers based on modeling historical and current fish and macroinvertebrate data
(JOURNAL) [Published : May 02, 2022]
Biological monitoring is important for assessing the ecological condition of surface waters. However, there are challenges in determining what constitutes reference conditions, what assemblages should be used as indicators, and how assemblage data should be converted into quantit...
A review of climate change effects on practices for mitigating water quality impacts
(JOURNAL) [Published : Mar 22, 2022]
Best Management Practices (BMPs) are used to mitigate the impacts of human activities on land and water resources. Most BMPs function via physical, chemical, and biological processes that are strongly dependent on weather and climate. Changing climatic conditions can lead to incr...
Integrating high-resolution coastal acidification monitoring data across seven United States estuaries
(JOURNAL) [Published : Aug 19, 2021]
Beginning in 2015, the U.S. EPA’s National Estuary Program (NEP) started a collaboration with partners in seven estuaries along the East Coast (Barnegat Bay; Casco Bay), West Coast (Santa Monica Bay; San Francisco Bay; Tillamook Bay), and the Gulf of Mexico (GOM) Coast (Tam...
Sensitivity of Riparian Buffer Designs to Climate Change—Nutrient and Sediment Loading to Streams: A Case Study in the Albemarle-Pamlico River Basins (USA) Using HAWQS
(JOURNAL) [Published : Nov 09, 2021]
Riparian buffer zones (RBZs) provide multiple benefits to watershed ecosystems. We aimed to conduct an extensive sensitivity analysis of the RBZ designs to climate change nutrient and sediment loadings to streams. We designed 135 simulation scenarios starting with the six baselin...
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) [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...