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These data were compiled to assess the risk of erosion to archaeological site preservation. The objective of the study is to evaluate changes in archaeological site condition over time as a function of two geomorphology based conceptual models that evaluate the extent to which sites are potentially affected by 1) erosion from gullies, and 2) wind-driven (aeolian) supply of river-sourced sand, respectively. These data represent the results of two classification metrics, based on the two conceptual models, applied to a population of 362 archaeological sites over multiple decades. Both conceptual models numerically rank geomorphic conditions with class values of 1 representing the best potential for archaeological...
Categories: Data; Tags: Arizona, Colorado River, Geography, Geomorphology, Glen Canyon Dam, All tags...
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Fire is a natural and necessary component of the South Central Plains ecosystem. However, fire suppression and more frequent droughts in the region have resulted in a build-up of dry fuels loads such as dead wood, resulting in fires that burn hotter and impact the landscape more severely. Uncontrolled wildfires have cost the region several billion dollars over the past five years. Further, fire suppression has resulted in substantial losses in native plant biodiversity and wildlife habitat, which also has costly implications. In Oklahoma alone, it’s estimated that $157 million will be required to restore rangelands to their native conditions. Of further concern is the fact that projected changes in climate indicate...
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A seismic hazard model for South America, based on a smoothed (gridded) seismicity model, a subduction model, a crustal fault model, and a ground motion model, has been produced by the U.S. Geological Survey. These models are combined to account for ground shaking from earthquakes on known faults as well as earthquakes on un-modeled faults. This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.1 degrees in latitude and longitude. This particular data set is for horizontal spectral response acceleration for 1.0-second period with a 2 percent probability of exceedance in 50 years.
A seismic hazard model for South America, based on a smoothed (gridded) seismicity model, a subduction model, a crustal fault model, and a ground motion model, has been produced by the U.S. Geological Survey. These models are combined to account for ground shaking from earthquakes on known faults as well as earthquakes on un-modeled faults. This data set represents the hazard curves for a grid of points with a spacing of 0.1 degrees in latitude and longitude. It represents the annual rate of exceedance versus 1.0-second spectral response acceleration.
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A seismic hazard model for South America, based on a smoothed (gridded) seismicity model, a subduction model, a crustal fault model, and a ground motion model, has been produced by the U.S. Geological Survey. These models are combined to account for ground shaking from earthquakes on known faults as well as earthquakes on un-modeled faults. This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.1 degrees in latitude and longitude. This particular data set is for peak ground acceleration with a 50 percent probability of exceedance in 50 years.
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Expected average annual fatalities from earthquakes are determined by using PAGER's vulnerability functions that are unique to each country. There are significant differences in fatality rates between countries, which is indicative of their relative vulnerability to earthquakes.
The U.S. continues efforts to develop genetically superior short-rotation woody crops (hybrid poplar and willow) and herbaceous crops (switchgrass). These biomass crops can provide multiple environmental benefits as well as energy and fiber. This paper focuses on results of site-specific studies that are quantifying the environmental potential and ramifications of converting agricultural croplands to biomass crop production. At research-scales, no differences have been found in erosion and movement of nutrients from annual row crops, switchgrass, and tree crops with and without a cover crop in the initial year of establishment. Research- and watershed-scale studies on different soil types, in different regions,...
Broadening the IYamework of enviromnental impact assessment (EIA) involves an e×amination of the principles and policies which should underlie ecologically sustainable development. To work effectively, EIA procedures need to be located within a broad fi'amework of policies and environmental objectives, standards and monitoring. This paper discusses the political and environmental context in Australia within which the debate on sustainable development is occurring. Some important principles which underlie an ecologically sustainable development policy IYamework are discussed, These include inter-generational equity, conservation of biological diversity and ecological integrity, maintenance of natural capital and...
Considering the development and diffusion of any new technology in the marketplace necessarily involves some recognition of risk. However, for setting policy agenda, it is very useful to distinguish among different types of risks, especially where the technology presents a new process for existing economic activities or involves the expanded use of current economic resources. This is because the influence of extraordinary risks is likely to be much more important given the greater range of uncertainties presented to market decision-makers. ,~lany new biomass technologies being considered currently for the production of energy involve extraordinary risks because the processes are nonconventional and require major...
Cobalt is a naturally occurring element found in rocks, soil, water, plants, and animals and has diverse industrial importance. It is cycled in surface environments through many natural processes (e.g. volcanic eruptions, weathering) and can be introduced through numerous anthropogenic activities (e.g. burning of coal or oil, or the production of cobalt alloys). The environmental behaviour of cobalt in terrestrial environment is relatively poorly studied and in particular where Co is used in industrial processes, the baseline information to support wider and long-term environmental impacts is widely dispersed. To support the adoption of new EU regulations on the risk assessment of chemicals, we review here the various...
Mercury contamination of wildlife populations has been documented widely in recent years as biomonitoring has become an important tool for assessing environmental contamination. Avian eggs provide an ideal assay material for Hg biomonitoring, particularly when the collection of eggs is simplified by using cavity-nesting species that nest in easily monitored nest boxes. However. studies are needed that address the dynamics of how Hg is distributed within eggs, and how Hg is deposited naturally within clutches laid by a single female and among clutches laid by different females occupying the same contaminated environment. We collected 138 eggs from 13 complete clutches of box-nesting wood ducks (Aix sponsa) during...
Categories: Publication; Types: Citation; Tags: Melatonin, cancer, disturbance, risk, sleep
This article presents an application of a risk assessment approach in characterising the risks associated with safety violations in underground bituminous mines in Pennsylvania using the Mine Safety and Health Administration (MSHA) citation database. The MSHA database on citations provides an opportunity to assess risks in mines through scrutiny of violations of mandatory safety standards. In this study, quantitative risk assessment is performed, which allows determination of the frequency of occurrence of safety violations (through associated citations) as well as the consequences of them in terms of penalty assessments. Focus is on establishing risk matrices on citation experiences of mines, which can give early...
This paper examines the attitudes and perceptions of 277 American Indians about hunting and fishing, risk, and future land use of the Idaho National Engineering and Environmental Laboratory (INEEL) in southeastern Idaho. Nearly half of our sample were Shoshone-Bannock tribal members living on the nearby Fort Hall Reservation, and half were American Indians from elsewhere in the western United States. We also interviewed an additional 44 White people. We examine the hypothesis that there are differences in environmental concerns and attitudes toward future land use at INEEL as a function of tribal affiliation (ethnicity), educational level, gender, and age. Such perceptions are important because of the existence...
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This assessment raster is used to answer management questions (MQs) about where the Bighorn Sheep conservation element (CE) overlap with change agents (CAs). This is a basic footprint assessment of anthropogenic features (urban development, roads, etc). It does not model actual response of the CEs to the CAs; those more complex issues are addressed in different MQs and through different models. Areas for restoration/enhancement were indentified base upon the 3 quartile values (50>LC2025
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This map summarizes information presented in the other chapters of the report, including background information on the Bureau of Land Management and Rapid Ecoregional Assessments (REAs), and the REA components that are addressed by the Wyoming Basin REA. In addition, we provide two-page summaries for each Change Agent (development, invasive species, fire, and climate change) and Conservation Element (species and communities) assessed by the Wyoming Basin REA. The REA?s provide an assessment of 1) baseline conditions for long-term monitoring of broad-scale conditions and trends; 2) landscape-level intactness of ecological communities, habitats for priority species, and the ecoregion overall; and 3) a predictive capacity...
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- Observations of test subjects, - Body weight, organ/tissue weights - Biomarker data (oxidative DNA damage, thyroid hormones, corticosterone, gene expression) in various tissues - Residues as percent of administered dose - Tissues to plasma rations - Metabolites and ratios - Elimination half-lives
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Body weight and weight change during course of study, estimates of food and brodifacoum consumption, observations of test birds during feeding trial and at necropsy, hematocrit, and prothrombin time
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Executive Summary: Our project combined field surveys of fish communities and habitat characteristics with estimates of population genetic structure to identify and evaluate critical factors influencing fish communities in the Gila River basin of New Mexico. Fish communities were structured along a strong habitat gradient associated with stream size, with distinct differences in the distribution of native and nonnative fishes. Nonnative warm-water species generally occurred in mainstem habitats, whereas coldwater nonnative salmonids occurred in high elevation tributaries. Habitat affinities of native species varied, with some occurring in mainstem habitats and others in tributaries. Several native species, such...
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Risk-targeted maximum considered earthquake ground acceleration maps (MCER) are for the design of buildings and other structures. The maps are derived from the USGS seismic hazard maps in accordance with the site-specific ground-motion procedures of the NEHRP Recommended Seismic Provisions for New Building and Other Structures and the ASCE Minimum Design Loads for Buildings and Other Structures (also known as the ASCE 7 Standard; ASCE, 2016). The MCER ground motions are taken as the lesser of probabilistic and deterministic values, as explained in the Provisions. The gridded probabilistic and deterministic values for 1.0-second spectral response acceleration are available here.
map background search result map search result map Helping Fire Professionals Understand and Manage Changing Fire Regimes 1.0-second spectral response acceleration (5% of critical damping) with a 2% probability of exceedance in 50 years Final Report: Metacommunity Dynamics of Gila River Fishes Peak ground acceleration with a 50% probability of exceedance in 50 years Toxicokinetics of imidacloprid-coated wheat seeds in Japanese quail (Coturnix japonica) and evaluation of hazard BLM REA MBR 2010 2010.ILMREADBO.MBR MQ7 180711 BHSH CA HabitatRestorationEnhancement poly BLM REA WYB 2011 Ch03 Overview Synthesis Part 1 Aeolian and drainage classification data for various archaeological sites in Grand Canyon National Park along the Colorado River from 1973 to 2022 Brodifacoum isomer formulation study Toxicokinetics of imidacloprid-coated wheat seeds in Japanese quail (Coturnix japonica) and evaluation of hazard Brodifacoum isomer formulation study Aeolian and drainage classification data for various archaeological sites in Grand Canyon National Park along the Colorado River from 1973 to 2022 Final Report: Metacommunity Dynamics of Gila River Fishes BLM REA MBR 2010 2010.ILMREADBO.MBR MQ7 180711 BHSH CA HabitatRestorationEnhancement poly Helping Fire Professionals Understand and Manage Changing Fire Regimes BLM REA WYB 2011 Ch03 Overview Synthesis Part 1 Peak ground acceleration with a 50% probability of exceedance in 50 years 1.0-second spectral response acceleration (5% of critical damping) with a 2% probability of exceedance in 50 years