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Mercury in western North America: A synthesis of environmental contamination, fluxes, bioaccumulation, and risk to fish and wildlife Western North America is a region defined by extreme gradients in geomorphology and climate, which support a diverse array of ecological communities and natural resources. The region also has extreme gradients in mercury (Hg) contamination due to a broad distribution of inorganic Hg sources. These diverse Hg sources and a varied landscape create a unique and complex mosaic of ecological risk from Hg impairment associated with differential methylmercury (MeHg) production and bioaccumulation. Understanding the landscape-scale variation in the magnitude and relative importance of processes associated with Hg transport, methylation, and MeHg bioaccumulation requires a multidisciplinary synthesis that transcends small-scale... Categories: Publication; Types: Citation Fish tissue mercury and selenium concentrations in Upper Colorado River Basin: 1962-2011 These data were compiled to study mercury and selenium concentrations in fish species and assemblages in lotic waterbodies across the Upper Colorado River Basin. Data were compiled from State and Federal agencies. This data table contains raw concentration data, as well as standardized concentrations corrected for differences based on sample type (i.e., tissue type), species-specific bioaccumulation rates (Table S1), and fish size (Table S2). The data were used in linear mixed effects models to estimate average mercury and selenium concentration in fish species and in fish assemblages, including fish total length (cm), sampling location (Sub basin name and GPS coordinates), and sampling year (Figures 2,3, and 4... Categories: Data; Tags: Arizona, Colorado, Colorado Headwaters, Colorado River, Dirty Devil River, All tags... Dolores River, Great Divide-Upper Green River, Green River, Gunnison, Gunnison River, Lower Green, New Mexico, San Juan, San Juan River, USGS Science Data Catalog (SDC), Upper Colorado River Basin, Upper Colorado-Dirty Devil, Upper Colorado-Dolores, Utah, White River, White-Yampa, Yampa River, bioaccumulation, biota, endangered species, environment, fish, fish samples, fish tissue, fishes, mercury, mercury, mercury contamination, selenium, selenium, selenium concentration, Fewer tags Mercury risk to avian piscivores across western United States and Canada The widespread distribution of mercury (Hg) threatens wildlife health, particularly piscivorous birds. Western North America is a diverse region that provides critical habitat to many piscivorous bird species, and also has a well-documented history of mercury contamination from legacy mining and atmospheric deposition. The diversity of landscapes in the west limits the distribution of avian piscivore species, complicating broad comparisons across the region. Mercury risk to avian piscivores was evaluated across the western United States and Canada using a suite of avian piscivore species representing a variety of foraging strategies that together occur broadly across the region. Prey fish Hg concentrations were... Categories: Publication; Types: Citation Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 9.0, November 2023) Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks collected as part of the Dragonfly Mercury Project (DMP). This data release supersedes Eagles-Smith, C.A., Nelson, S.J., Flanagan-Pritz, C.M., Willacker Jr., J.J., and Klemmer, A.J., 2018, Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 8.0, December 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P9TK6NPT. Please contact fresc_outreach@usgs.gov for access. Categories: Data, Data Release - Revised; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Amistad National Recreation Area, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, All tags... Aquatic Biology, Assateague Island National Seashore, Battle Creek Cypress Swamp, Bear Creek Lake Park, Bear Meadows Natural Area, Big Bend National Park, Big Cypress National Preserve, Big Thicket National Preserve, Buffalo National River, Cape Cod National Seashore, Capitol Reef National Park, Carl Sandburg Home National Historic Site, Carlsbad Caverns National Park, Channel Islands National Park, Chattahoochee River National Recreation Area, Chickasaw National Recreation Area, City of Rocks National Reserve, Colorado National Monument, Congaree National Park, Crater Lake National Park, Craters of the Moon National Monument & Preserve, Cuyahoga Valley National Park, Death Valley National Park, Delaware Water Gap National Recreation Area, Denali National Park and Preserve, Devils Tower National Monument, East Inlet Natural Area-Connecticut Lakes Nature Preserve, Ecology, Ell Pond Preserve, Everglades National Park, Fort Larned National Historic Site, Fort Worth Nature Center and Refuge National Natural Landmark, Gateway National Recreation Area, Glacier Bay National Park & Preserve, Glacier National Park, Glen Canyon National Recreation Area, Golden Gate National Recreation Area, Grand Canyon National Park, Grand Portage National Monument, Grand Teton National Park, Great Basin National Park, Great Sand Dunes National Park, Great Smoky Mountains National Park, Gulf Islands National Seashore, Hawaii Volcanoes National Park, Homestead National Monument, Horseshoe Bend National Military Park, Hot Springs National Park, Indiana Dunes National Park, Isle Royale National Park, Jean Lafitte National Historical Park and Preserve, John Day Fossil Beds National Monument, Joshua Tree National Park, Katahdin Woods and Waters National Monument, Katmai National Park and Preserve, Kenai Fjords National Park, Kenilworth Park & Aquatic Gardens, Klondike Gold Rush National Historical Park, Knife River Indian Villages National Historic Site, Lake Clark National Park and Preserve, Lassen Volcanic National Park, Lewis and Clark National Historical Park, Lilley Cornett Woods, Mammoth Cave National Park, Marsh-Billings-Rockefeller National Park, Maurice National Wild and Scenic River, Minute Man National Historical Park, Mississippi National River & Recreation Area, Monocacy National Battlefield, Montezuma Castle National Monument, Mount Rainier National Park, Natchez Trace Parkway and National Scenic Trail, New River Gorge National Park and Preserve, Niobrara National Scenic River, North Cascades National Park, Ocmulgee Mounds National Historical Park, Olympic National Park, Oregon Caves National Monument, Ozark National Scenic Riverway, Padre Island National Seashore, Petersburg National Battlefield, Pictured Rocks National Lakeshore, Pinnacles National Park, Pipestone National Monument, Prince William Forest Park, Pu'ukohola Heiau National Historic Site, Redwood National Park, Richmond National Battlefield Park, Rio Grande Wild & Scenic River, Rock Creek Park, Rocky Mountain National Park, Roosevelt-Vanderbilt National Historic Sites, Saguaro National Park, Saint Croix National Scenic Riverway, Saint-Gaudens National Historic Site, San Juan Island National Historical Park, Santa Monica Mountains National Recreation Area, Sequoia & Kings Canyon National Parks, Shenandoah National Park, Sleeping Bear Dunes National Lakeshore, Sudbury, Assabet & Concord Wild & Scenic Rivers, Tallgrass Prairie National Preserve, Timucuan Ecological Historic Preserve, Tumacacori National Historical Park, Tuzigoot National Monument, USGS Science Data Catalog (SDC), Upper Delaware Scenic and Recreational River, Valles Caldera National Preserve, Voyageurs National Park, Water Quality, Weir Farm National Historical Park, Wekiva Wild & Scenic River, White Mountain National Forest, Wildlife Biology, Wind Cave National Park, Women’s Rights National Historical Park, Yellowstone National Park, Yosemite National Park, Zion National Park, biota, environment, mercury contamination, Fewer tags Hydrological, Chemical, and Biological Characterization of the Snake River and Associated Tributaries and Irrigation Drains from River Mile 448 to 346, 2022 This dataset includes field hydrologic measurements and laboratory analyses of surface and pore waters, sediments, benthic plants/biofilms, and biota along the Middle Snake River upgradient of the Hells Canyon Complex. The study region for this work focuses on a section of the Snake River heavily utilized for agriculture, with complex systems of irrigation diversion and return drainage, spanning 164 km above the Hells Canyon Complex (Idaho, Oregon). The goal of this study was to identify potential loading sources of methylmercury from the upgradient Snake River into the reservoir complex, with a focus on the tributaries, irrigation return drains, and riparian zones adjacent to agricultural lands along the river.... Categories: Data; Tags: Aquatic Biology, Environmental Health, Geochemistry, Hydrology, Idaho, All tags... Oregon, Snake River, USGS Science Data Catalog (SDC), Water Quality, aquatic ecosystems, bioaccumulation, biofilm, biota, dissolved metals, ecotoxicology, environment, geochemistry, hydrology, inlandWaters, invertebrates, mercury, methylmercury, pore water quality, sediment quality, surface water quality, water chemistry, Fewer tags Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a citizen science framework. Categories: Data; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, Aquatic Biology, All tags... Battle Creek Cypress Swamp, Bear Creek Lake Park, Bear Meadows Natural Area, Big Bend National Park, Big Cypress National Park, Big Thicket National Preserve, Buffalo National River, Cape Cod National Seashore, Capitol Reef National Park, Carl Sandburg Home National Historic Site, Channel Islands National Park, Chickasaw National Recreation Area, Colorado National Monument, Congaree National Park, Cuyahoga Valley National Park, Death Valley National Park, Delaware Water Gap National Recreation Area, Denali National Park and Preserve, Devils Tower National Monument, East Inlet Natural Area-Connecticut Lakes Nature Preserve, Ecology, Environmental Health, Everglades National Park, Fort Worth Nature Center and Refuge National Natural Landmark, Gateway National Recreation Area, Glacier Bay National Park & Preserve, Glacier National Park, Glen Canyon National Recreation Area, Golden Gate National Recreation Area, Grand Canyon National Park, Grand Portage National Monument, Grand Teton National Park, Great Basin National Park, Great Sand Dunes National Park, Great Smoky Mountains National Park, Gulf Islands National Seashore, Hawaii Volcanoes National Park, Homestead National Historic Site, Hot Springs National Park, Indiana Dunes National Park, Isle Royale National Park, Jean Lafitte National Historical Park and Preserve, John Day Fossil Beds National Monument, Katahdin Woods and Waters National Monument, Katmai National Park and Preserve, Kenilworth Park & Aquatic Gardens, Klondike Gold Rush National Historical Park, Knife River Indian Villages National Historic Site, Lake Clark National Park, Lassen Volcanic National Park, Lewis and Clark National Historical Park, Mammoth Cave National Park, Marsh-Billings-Rockefeller National Park, Maurice National Wild & Scenic River, Minute Man National Historical Park, Mississippi National River & Recreation Area, Monocacy National Battlefield, Montezuma Castle National Monument, Mount Rainier National Park, Natchez Trace Parkway and National Scenic Trail, Niobrara National Scenic River, North Cascades National Park, Olympic National Park, Oregon Caves National Monument, Ozark National Scenic Riverway, Padre Island National Seashore, Pictured Rocks National Lakeshore, Pinnacles National Park, Pipestone National Monument, Prince William Forest Park, Pu'ukohola Heiau National Historic Site, Redwood National Park, Richmond National Battlefield Park, Rock Creek Park, Rocky Mountain National Park, Roosevelt-Vanderbilt National Historic Sites, Saguaro National Park, Saint Croix National Scenic Riverway, Saint-Gaudens National Historic Site, San Juan Island National Historical Park, Santa Monica Mountains National Recreation Area, Saugus Iron Works National Historic Site, Sequoia & Kings Canyon National Parks, Shenandoah National Park, Sleeping Bear Dunes National Lakeshore, Tallgrass Prairie National Preserve, Timucuan Ecological Historic Preserve, Tumacacori National Historical Park, Tuzigoot National Monument, USGS Science Data Catalog (SDC), Upper Delaware Scenic and Recreational River, Valles Caldera National Preserve, Voyageurs National Park, Water Quality, Weir Farm National Historic Site, Wildlife Biology, Wind Cave National Park, Women’s Rights National Historical Park, Yellowstone National Park, Yosemite National Park, Zion National Park, biota, environment, mercury contamination, Fewer tags Mercury in smallmouth bass from the Snake River, USA, 2013-2022 Comma-separated values (.csv) file containing data related to mercury in smallmouth bass (Micropterus dolomieu) collected from the Snake River, USA. Categories: Data; Tags: Aquatic Biology, Ecology, Environmental Health, Idaho, Oregon, All tags... Snake River, USA, USGS Science Data Catalog (SDC), Water Quality, Wildlife Biology, biota, chemical analysis, contamination and pollution, environment, inlandWaters, Fewer tags Mercury and biogeochemical parameters in surface water and sediment from U.S. National Parks, 2014-2015 (ver. 2.0, December 2023) Comma-separated values (.csv) file containing data related to mercury and biogeochemical parameters in surface water and aquatic sediment collected from U.S. National Parks in 2014-2015. Categories: Data, Data Release - Revised; Tags: Acadia National Park, Big Bend National Park, Big Cypress National Park, Big Thicket National Preserve, Cape Cod National Seashore, All tags... Chickasaw National Recreation Area, Cuyahoga Valley National Park, Denali National Park and Preserve, Glacier National Park, Great Smoky Mountains National Park, Gulf Islands National Seashore, Indiana Dunes National Park, John Day Fossil Beds National Monument, Knife River Indian Villages National Historic Site, Lake Clark National Park and Preserve, Mammoth Cave National Park, Marsh-Billings-Rockefeller National Park, Montezuma Castle National Monument, Mount Rainier National Park, Niobrara National Scenic River, Olympic National Park, Ozark National Scenic Riverway, Pictured Rocks National Lakeshore, Pipestone National Monument, Redwood National Park, Rocky Mountain National Park, Roosevelt-Vanderbilt National Historic Sites, Saguaro National Park, Saint-Gaudens National Historic Site, Shenandoah National Park, Tallgrass Prairie National Preserve, Timucuan Ecological & Historic Preserve, Tumacacori National Historical Park, Tuzigoot National Monument, USGS Science Data Catalog (SDC), USGS:637e5e47d34ed907bf769345, Valles Caldera National Preserve, Voyageurs National Park, Yellowstone National Park, Yosemite National Park, environment, inlandWaters, mercury contamination, Fewer tags Biomass and methylmercury concentrations in biweekly biological samples from Brownlee and Oxbow Reservoir outflows, Snake River Hells Canyon Complex (Idaho-Oregon), 2018-2019 This dataset describes biomass and methylmercury concentrations in zooplankton, other invertebrates, fish, and coarse and fine detritus samples collected at the outflow locations of Brownlee and Oxbow Reservoirs in the Snake River Hells Canyon Complex. Based on the sampling locations, the sampled materials were presumed to have flowed through the dam turbines or over the spillway, thereby representing biological export from the reservoirs. Samples were collected biweekly at each location over a sixteen-month period, June 2018 – September 2019. Sampling and analysis methods are described in the Processing Steps section of the metadata. Categories: Data; Tags: Aquatic Biology, Ecology, Environmental Health, Hells Canyon, Ictaluridae, All tags... Idaho, Lepomis macrochirus, Micropterus dolomieu, Oregon, Perca flavescens, Pomoxis, Snake River, USGS Science Data Catalog (SDC), Water Quality, Water Resources, bioaccumulation, biota, contamination and pollution, ecotoxicology, environment, field sampling, fish, inlandWaters, invertebrates, mercury contamination, methylmercury, plankton, toxic trace element contamination, Fewer tags Reservoirs and water management influence fish mercury concentrations in the western United States and Canada Anthropogenic manipulation of aquatic habitats can profoundly alter mercury (Hg) cycling and bioaccumulation. The impoundment of fluvial systems is among the most common habitat manipulations and is known to increase fish Hg concentrations immediately following impoundment. However, it is not well understood how Hg concentrations differ between reservoirs and lakes at large spatial and temporal scales or how reservoir management influences fish Hg concentrations. This study evaluated total Hg (THg) concentrations in 64,386 fish from 883 reservoirs and 1387 lakes, across the western United States and Canada, to assess differences between reservoirs and lakes, as well as the influence of reservoir management on fish... Categories: Publication; Types: Citation Assessing potential health risks to fish and humans using mercury concentrations in inland fish from across western Canada and the United States Fish represent high quality protein and nutrient sources, but Hg contamination is ubiquitous in aquatic ecosystems and can pose health risks to fish and their consumers. Potential health risks posed to fish and humans by Hg contamination in fish were assessed in western Canada and the United States. A large compilation of inland fish Hg concentrations was evaluated in terms of potential health risk to the fish themselves, health risk to predatory fish that consume Hg contaminated fish, and to humans that consume Hg contaminated fish. The probability that a fish collected from a given location would exceed a Hg concentration benchmark relevant to a health risk was calculated. These exceedance probabilities and their... Categories: Publication; Types: Citation Total Mercury Concentrations in Smallmouth Bass from Chesapeake Bay Tributaries, USA Dataset, 2013-2017 This dataset includes fish scientific name, fish common name, site identification codes, latitude, longitude, site name, sample identification codes, collection date, tissue type, percent moisture content in fish samples, and wet and dry total mercury concentrations in fish tissues. Categories: Data; Tags: Antietam Creek, Aquatic Biology, Chillisquaque Creek, Ecology, Environmental Health, All tags... Monocacy River, North Branch Potomac River, North Fork Shenandoah River, North Fork South Branch Potomac River, Pine Creek, South Branch Potomac River, USGS Science Data Catalog (SDC), Water Resources, West Branch Mahantango Creek, biota, chemical analysis, contamination and pollution, environment, inlandWaters, mercury levels, Fewer tags Trask River Watershed Study Area Forestry Bioaccumulation Dataset, 2011-2015 This dataset includes timber harvest treatments; mercury concentrations in aquatic macroinvertebrates, salamanders, and riparian songbirds; carbon and nitrogen stable isotopes in aquatic macroinvertebrates and salamanders; and Bayesian estimates of food web length, basal resource diversity, and isotopic niche size for individual feeding guilds. Categories: Data; Tags: Aquatic Biology, Ecology, Environmental Health, Forestry, Trask River Watershed Study Area, All tags... USGS Science Data Catalog (SDC), Wildlife Biology, biota, environment, mercury contamination, Fewer tags Total mercury and methylmercury in biota from Cottage Grove Reservoir, Coast Fork Willamette River, and additional reservoirs in Oregon (ver. 2.0, February 2024) Comma Separated Value (CSV) file containing data related to total and methyl mercury concentrations in biota from the Willamette Basin in Oregon; specifically, Cottage Grove Reservoir, waters upstream of the reservoir, and additional reservoirs within the Willamette Basin. Categories: Data, Data Release - Revised; Tags: Big River, Oregon, Coast Fork Willamette River, Oregon, Cottage Grove Reservoir, Oregon, Dexter Reservoir, Oregon, Dorena Reservoir, Oregon, All tags... Fall Creek Reservoir, Oregon, Fern Ridge Reservoir, Oregon, Foster Reservoir, Oregon, Garoutte Creek, Oregon, Green Peter Reservoir, Oregon, Hills Creek Lake, Oregon, Little River, Oregon, Lookout Point Reservoir, Oregon, Oregon, Williams Creek, Oregon, biota, chemical analysis, contamination and pollution, environment, inlandWaters, mercury, Fewer tags Mercury cycling, bioaccumulation, and risk across western North America: a landscape scale synthesis linking long-term datasets Mercury (Hg) is a serious environmental problem that is impacting ecological and human health on a global scale. However, local and regional processes are largely responsible for producing methylmercury, which drives ecological risk. This is particularly true in western North America where the combination of diverse landscapes, habitat types, climates, and Hg sources may disproportionally impact the region relative to other areas in North America. Even with decades of regional Hg research and monitoring, there is still no holistic synthesis of the spatiotemporal patterns of Hg in abiotic and biotic resources across the region, nor has there been a formal, simultaneous analysis of the landscape, ecological and climatological... Categories: Data, Project; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: All Working Groups, Completed, Ecosystems, Environmental Health, Mercury, All tags... Natural Hazards, Synthesis, Fewer tags Spatial and temporal patterns of mercury concentrations in freshwater fish across the Western United States and Canada Methylmercury contamination of fish is a global threat to environmental health. Mercury (Hg) monitoring programs are valuable for generating data that can be compiled for spatially broad syntheses to identify emergent ecosystem properties that influence fish Hg bioaccumulation. Fish total Hg (THg) concentrations were evaluated across the Western United States (US) and Canada, a region defined by extreme gradients in habitat structure and water management. A database was compiled with THg concentrations in 96,310 fish that comprised 206 species from 4262 locations, and used to evaluate the spatial distribution of fish THg across the region and effects of species, foraging guilds, habitats, and ecoregions. Areas of... Categories: Publication; Types: Citation Mercury in bird blood and benthic aquatic invertebrates in Plumas National Forest, 2015-2016 The dataset includes specifics on bird blood and aquatic invertebrate tissue mercury concentrations measured using direct mercury analysis. Categories: Data; Tags: Aquatic Biology, California, Ecology, Environmental Health, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Resources, Wildlife Biology, aquatic biology, benthic ecosystems, biota, birds, ecotoxicology, environment, field sampling, inlandWaters, macroinvertebrates, mercury contamination, ornithology, wildlife biology, Fewer tags