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Records 1 to 25 of 358

Assessing Coral Reef Condition Indicators for Local and Global Stressors Using Bayesian Networks
(JOURNAL) [Published : Jan 01, 2021]
Coral reefs are highly valued ecosystems currently threatened by both local and global stressors. Given the importance of coral reef ecosystems, a Bayesian network approach can benefit an evaluation of threats to reef condition. To this end, we used data to evaluate the overlap b...
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 ...
Impact of climate change on groundwater resource in a region with a fast depletion rate: the Mississippi Embayment
(JOURNAL) [Published : Sep 01, 2021]
Mississippi Embayment (ME) is one of the fastest groundwater depletion regions around the world, while the impacts of climate change on groundwater resources in the region are complex and basically unknown. Using the U.S. Geological Survey's Mississippi Embayment Regional Aquifer...
Drivers and extent of surface water occurrence in the Selenga River Delta, Russia
(JOURNAL) [To be published : Dec 01, 2021]
Study region Selenga River Delta (SRD), Russia. Study focus How is water occurrence changing in the SRD, and what are the hydroclimatic drivers behind these changes? The presence of water on the surface in river deltas is governed by land use, geomorphology, and ...
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...
A global perspective on the functional responses of stream communities to flow intermittence
(JOURNAL) [Published : Oct 01, 2021]
  The current erosion of biodiversity is a major concern that threatens the ecological integrity of ecosystems and the ecosystem services they provide. Due to global change, an increasing proportion of river networks are drying and changes from perennial to non-perenni...
Improving global flood and drought predictions: integrating non-floodplain wetlands into watershed hydrologic models
(JOURNAL) [Published : Sep 03, 2021]
The world's climate is changing rapidly. Projecting the extent of flood and droughts in response to a changing climate requires robust hydrologic models. These models must consider not only in-stream hydraulics but also watershed hydrologic processes—such as changes in soil...
Assessing ecological risks from atmospheric deposition of nitrogen and sulfur to US Forests using epiphytic macrolichens
(JOURNAL) [Published : Jun 03, 2019]
Critical loads of atmospheric deposition help decision-makers identify harmful levels of air pollution. But when critical loads are exceeded, how can the accompanying environmental risk be quantified? We use epiphytic macrolichens to assess risks from nitrogen and sulfur-containi...
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...
The Significant Surface-Water Connectivity of “Geographically Isolated Wetlands”
(JOURNAL) [Published : Aug 01, 2017]
We evaluated the current literature, coupled with our collective research expertise, on surface-water connectivity of wetlands considered to be "geographically isolated" (sensu Tiner Wetlands 23:494-516, 2003a) to critically assess the scientific foundation of grouping wetlands b...
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...
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...
Benthic macroinvertebrate community response to environmental changes over seven decades in an urbanized estuary in the northeastern United States
(JOURNAL) [Published : Jul 01, 2021]
Narragansett Bay is representative of New England, USA urbanized estuaries, with colonization in the early 17th century, and development into industrial and transportation centers in the late 18th and early 20th century. Increasing nationwide population and lack of infrastructure...
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...
A century of precipitation trends in forest lands of the Lower Mississippi River Alluvial Valley
(JOURNAL) [Published : Jul 30, 2020]
Variations in long-term precipitation trends due to climate forcings have been observed in many parts of the world, exacerbating hydrological uncertainties to predicting droughts, floods, water resource availability, and ecosystem services. The Lower Mississippi River Alluvial Va...
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...
An Ecological Perspective on Living with Fire in Ponderosa Pine Forests of Oregon and Washington: Resistance, Gone but not Forgotten
(JOURNAL) [Published : Jun 01, 2021]
Wildland fires (WLF) have become more frequent, larger, and severe with greater impacts to society and ecosystems and dramatic increases in firefighting costs. Forests throughout the range of ponderosa pine in Oregon and Washington are jeopardized by the interaction of anomalousl...
The Role of Social-Ecological Resilience in Coastal Zone Management: A Comparative Law Approach to Three Coastal Nations
(JOURNAL) [Published : Oct 25, 2019]
Around the globe, coastal communities are increasingly coping with changing environmental conditions as a result of climate change and ocean acidification, including sea level rise, more severe storms, and decreasing natural resources and ecosystem services. A natural adaptation ...
Comparison of EPIC-simulated and MODIS-derived Leaf Area Index (LAI) across multiple spatial scales
(JOURNAL) [Published : Aug 26, 2020]
Modeled leaf area index (LAI) in conjunction with satellite-derived LAI data streams may be used to support various regional and local scale air quality models for retrospective and future meteorological assessments. The Environmental Policy Integrated Climate (EPIC) model holds ...
Panarchy: opportunities and challenges for ecosystem management
(JOURNAL) [Published : Dec 01, 2020]
Addressing unexpected events and uncertainty represents one of the grand challenges of the Anthropocene, yet ecosystem management is constrained by existing policy and laws that were not formulated to deal with today's accelerating rates of environmental change. In many cases, ma...
The impact of air pollution on terrestrial managed and natural vegetation.
(JOURNAL) [Published : Oct 30, 2020]
There is a long history of awareness of air pollution impacts on vegetation but until the twentieth century this was largely based on field observations of injury to vegetation in the absence of measurements of the pollutants. In the UK following the industrial revolution urban a...
Climate‐change refugia: biodiversity in the slow lane
(JOURNAL) [Published : Jun 01, 2020]
Climate‐change adaptation focuses on conducting and translating research to minimize the dire impacts of anthropogenic climate change, including threats to biodiversity and human welfare. One adaptation strategy is to focus conservation on climate‐change refugia (that is, areas r...
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 ...