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The spatial distribution of long-term changes in climatic factors and its relation with vegetation cover, human health, hydrology and many other ecosystem processes help to identify the consequences of climatic factors changes. In recent studies, the significant changes of select...

Advances in understanding the optics of shallow water environments, submerged vegetation canopies and seagrass physiology, combined with improved spatial resolution of remote sensing platforms, now enable eelgrass ecosystems to be monitored at a variety of time scales from earth-...

Tidal freshwater ecosystems experience acute seawater intrusion associated with periodic droughts, but are expected to become chronically salinized as sea level rises. Here we report the results from an experimental manipulation in a tidal freshwater Zizaniopsis miliacea marsh on...

This presentation describes EPA Research for a staff visit for Congressional Rep. Suzanne Bonamici (OR 1st District). It provides an overview of water quality and ecosystem services research by the EPA at the Western Ecology Division. This presentation is given in conjunction wit...

Over recent decades the government has made a wealth of information publicly available as part of the Federal Open Data Policy. The EnviroAtlas provides a wealth of geospatial data and other resources to decision makers, educators, and researchers. EnviroAtlas resources are organ...

Natural ecosystems perform fundamental life-support services upon which human civilization depends. However, many people believe that nature provides these services for free and therefore, they are of little or no value. One nearly forgotten ecosystem service is ecotherapy &ndash...

Until somewhat recently there was limited awareness about the impact of soils on human health, ecosystems, and economy. Only in the second half of the twenty century the world awaked for the poor condition of soils, and to its several threats (e.g. soil contamination), as well as...

Land cover changes associated with urbanization have negative effects on downstream ecosystems. Contemporary urban development attempts to mitigate these effects by designing stormwater infrastructure to mimic predevelopment hydrology, but their performance is highly variable. Th...

Reservoirs are a globally significant source of methane (CH4) to the atmosphere. However, emission rate estimates may be biased low due to inadequate monitoring during brief periods of elevated emission rates (i.e. hot-moments). Here we investigate CH4 bubbling (i.e. ebullition...

Due to the large quantity of new chemicals being developed and potentially introduced into aquatic ecosystems, there is a need to prioritize chemicals with the greatest likelihood of ecological hazard for further research. To this end, a useful in silico estimation of ecotoxicity...

The industrial use and application of carbon-based nanomaterials (CNMs) have caused a rapid increase in their production over the last two decades. Current analytical methods for detecting CNMs in the environment are lacking, making environmental fate and transport modeling a pra...

The Environmental Effects Assessment Panel (EEAP) is one of three Panels of experts that inform the Parties to the Montreal Protocol. The EEAP focuses on the effects of UV radiation on human health, terrestrial and aquatic ecosystems, air quality, and materials, as well as on the...

Headwater ephemeral tributaries are key external interfaces between uplands and downstream waters. Terrestrial coarse particulate organic matter (CPOM) is vital in fueling aquatic ecosystems, but the extent to which ephemeral tributaries are functionally connected to downstream w...

The St. Louis River watershed has been profoundly changed by over 150 years of human development that resulted in widespread pollution and habitat degradation, especially around the St. Louis River &ldquo;estuary&rdquo; near Lake Superior. In 1987, the river was designated as an ...

Aquatic ecosystems are affected by changes in both temperature and resource availability. While higher temperatures may result in increased food consumption and increased mercury (Hg) accumulation, they may also increase growth and reduce Hg tissue concentration through somatic d...

In the complex arena of sustainability, where the costs of failure can be high and stakeholders have multiple and sometimes conflicting interests, communities need measurement tools to characterize their current state, develop meaningful goals and quantifiable objectives for the ...

The report is a six volume series on the socioeconomics of visitor use of Puerto Rico&rsquo;s coral reef ecosystems. EPA is developing decision-support tools to evaluate restoration alternatives in Puerto Rico and elsewhere. The decision support tools include consideration or ass...

Disruption of thyroid hormone signaling is a form of endocrine disruption that is of concern to both human health and ecosystems. Research is being conducted to define the biological targets chemicals may interact with to disrupt thyroid hormone signaling and the stages in develo...

Freshwater impoundments, like all inland aquatic systems, are sites of intense carbon processing and transport. They receive carbon in several forms (coarsely aggregated into dissolved and particulate fractions of both inorganic and organic forms), convert one C species to anothe...

The Groundwater Technical Support Center (GWTSC) is part of the Groundwater, Watershed, and Ecosystem Restoration Division (GWERD), which is based in the Robert S. Kerr Environmental Research Center in Ada, Oklahoma. The GWERD is a research division of EPA&rsquo;s National Risk M...

A presentation to be given at the 2018 APHL Annual Meeting and Twelfth Government Environmental Laboratory Conference. Harmful algal blooms or HABs are overgrowth of cyanobacteria in water bodies. These bacteria produce several harmful toxins (called cyanotoxins) that have detri...

While the effects of urbanization on stream ecosystems have been well-documented, little is known regarding the impact of burying streams within culverts. Our project aims to explore the ecological impacts of stream burial at a fine spatial scale. Two culverted urban streams in C...

Land use and environmental stressors, such as drought and deteriorating water infrastructure, can accelerate the depletion of freshwater resources that support humans and ecosystem services. As global demand for water and environmental stressors increase, the quality and availab...

Anthropogenic activities, such as mining/smelting, result in the release and accumulation of heavy metal(loid)s in soil, posing serious human health and ecological risks. Due to the persistence of metal(loid)s, not undergoing any chemical and biological degradation, they can only...

Biological assessments (surveying the presence, number, size and condition of fish, coral and other biota) provide important information about the health and integrity of coral reef ecosystems. Biological criteria are one means under the Clean Water Act (CWA) that managers can us...