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Filters Date Range Past year (4) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Project (4) Types Downloadable (4) Map Service (4) OGC WFS Layer (4) OGC WMS Layer (4) Shapefile (4) Contacts New York Water Science Center Douglas A Burns USGS National Water Quality Assessment Program New York State Energy Research Development Authority Daren M Carlisle James F Coles Cooperative Water Program Categories Data (4) Project (4) Tag Types Label (4) Tags (with Scheme=(none)) biomonitoring, stream-flow, temperature (1) mercury (1) methylmercury (1) new york adirondack streams, oregon, wisconsin, south carolina, florida (1) View Results as: JSON ATOM CSV

Mercury Bioaccumulation in Fish in New York's Streams and Rivers Background Although New York State has more than 70,000 miles of streams and rivers, little is known about the status, distribution, and trends of mercury (Hg) levels in stream fish, or the environmental drivers of these patterns. Streams and their riparian zones provide critical habitat for fish, birds, mammals, reptiles and amphibians, and serve as the interface between aquatic and terrestrial Hg transfer, transformations (most notably methylation) and bioaccumulation. Importantly, monitoring data from lakes (e.g., Simonin et al. 2006) does not transfer reliably to streams because of fundamental differences in Hg cycling and bioaccumulation processes. An assessment of fish Hg bioaccumulation focused on New... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquatic Community Health, Aquatic Community Health, Aquatic Community Health, Cooperative Water Program, Ecosystem Health, All tags... Ecosystem Health, Environments, New York, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water quality, mercury, Fewer tags Effects of flow alteration on ecological health of streams across the Atlantic Highlands Ecoregion Problem: The Clean Water Act (PL 92-500) requires that the health of the Nation’s rivers and streams be assessed on a regular basis, and in the Northeast such assessments often use information from aquatic biological communities that live in the stream. Biomonitoring programs implemented by individual states evaluate biological data to assess stream health on the premise that certain sensitive species that are native to the region cannot survive when water quality is poor. The aquatic community data are typically condensed into a set of biological condition metrics that are scaled numerically to convey the relative degree of stream impairment (e.g., excellent, good, fair, poor). However, biological condition... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Highlands Ecoregion,NY,VT,NH,ME,MA,CT,NJ,PA, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecosystem Health, All tags... Ecosystem Health, National Water Quality Assessment Program, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water quality, biomonitoring, stream-flow, temperature, Fewer tags The Effectiveness of Total Mercury as a Surrogate for Methylmercury in Aquatic Invertebrates A. BACKGROUND Aquatic macroinvertebrates, such as dragonfly larvae or crayfish have great potential for Mercury (Hg) monitoring, both as indicator organisms (or "sentinels'), and to provide critical information on Hg in lower food webs to assist in interpreting fish Hg levels. Despite these advantages, macroinvertebrates are not widely used in Hg monitoring because of the current need to directly analyze macoinvertebrate tissue for methyl-mercury (MeHg), at much greater expense than analyzing for total Hg (THg) (i.e. as a surrogate for MeHg), as with fish tissue. This is because the ratio of MeHg to THg in macroinvertebrates exhibits large taxonomic, spatial, and temporal variation, and there is no clear... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Cooperative Water Program, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecosystem Health, All tags... Ecosystem Health, New York, New York Adirondack streams, Oregon, Wisconsin, South Carolina, Florida, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Water quality, mercury, methylmercury, macroinvertebrates, Fewer tags Mercury Cycling and Bioaccumulation in the Upper Hudson River Basin--Fishing Brook BackgroundDetailed investigations of mercury cycling and bioaccumulation have been done in the Upper Hudson River basin (upstream of the Hudson River near Newcomb, in New York's Adirondack Mountains, with a focus on the Fishing Brook sub-basin, part of the western headwaters of the Hudson River. This study is part of a National mercury study that includes a concurrent study of McTier Creek, a headwater sub-basin of the Edisto River, located in South Carolina's Coastal Plain. These two study areas provide contrasting and complementary settings for the study of mercury cycling and bioaccumulation in headwater streams with close connectivity to out-of-channel wetlands. Atmospheric deposition is the dominant source... Categories: Data, Project; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adirondack Mountains, Hudson River, South Carolina, Completed, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, Ecological Assessment of Human and Natural Impacts, All tags... Ecosystem Health, Ecosystem Health, Focused Assessments, Focused Assessments, Focused Assessments, National Water Quality Assessment Program, New York, USGS New York Water Science Center, WSC, Water Quality, Water Quality, Wetlands, Wetlands, methylmercury, Fewer tags