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Alabama Strategic and Business Plan Development, categorized as Fifty States Initiative: Strategic and Business Plan Development, received by State of Alabama, under award number G10AC00176, in the year 2010.
District of Columbia Geographic Information System Business Plan, categorized as Fifty States Initiative: Business Plan Development and Implementation, received by District of Columbia Office of the Chief Technology Officer, under award number G10AC00172, in the year 2010.
The overall objective of the MoWS research group is to gain better understanding of the precipitation-runoff processes and use this knowledge to develop improved hydrologic models. The main research topics include: 1) Add functionality and improvements to the MoWS simulation models being developed and integrate with other hydrologic, hydraulic, and climate models. 2) Enhance the models to use the best and latest topographic, climate, geologic, and land-use data sets as direct input to process algorithms to increase the physical nature and temporal and spatial resolution of model input. 3) Develop national model structure and calibration strategy for national model application.
The objectives of my research are (1) to synthesize observational estimates of continental water and energy fluxes and storage; (2) to construct global computational models of continental water and energy fluxes and storage; (3) to identify physical controls, natural and anthropogenic, on spatial and temporal variability of water and energy fluxes and storage; and (4) to elucidate the hydrologic causes and effects of Earth-system variability and change, including climatic, biospheric, and geodetic processes.
Categories: Project;
Tags: Climate Change,
Evapotranspiration,
Hydroclimatology (including droughts and floods)
Our research seeks to evaluate and understand the processes that control and respond to changes in the level of CO 2 in the atmosphere. Our interests include the natural cycling of CO 2 and carbon through plants, soils, seawater, rocks, and sediments. We study the causes and effects of past geologic changes in atmospheric CO 2 levels, and the ongoing effects of human actions on CO 2 and climate.
The purpose of my research group is to develop new methods and applications of environmental isotopes to solve problems of national importance. In specific, the overall goal is to use environmental isotopes, combined with other biogeochemical measurements and hydrologic and biogeochemical modeling, to increase our understanding of biogeochemical and hydrological processes, nutrient and organic matter sources, subsurface flowpaths, and water age distributions in diverse environments. Many of our studies piggyback on the sampling efforts of major monitoring programs to investigate causes of hypoxia and food web problems. Our work provides critical scientific support for these monitoring programs. A long-term career...
Waterbirds breeding at wetlands in North Dakota forage mostly on aquatic invertebrates. Historically, productivity and abundance of aquatic invertebrates primarily was driven by inter-annual hydrological dynamics (i.e., wet-dry cycles). Wetland drying allows for nutrient cycling and a subsequent pulse of productivity when wet conditions return. However, abundance and quality of wetlands in North Dakota has declined due to landscape modifications, primarily agriculture. Consolidation drainage, a practice of draining less permanent wetlands into larger more permanent ones, is common in North Dakota and it increases connectivity and stabilizes water levels among remaining wetlands. For the effective management and...
Background information.—Historically, the Powell River supported abundant and diverse populations of freshwater mussels. In recent decades, mussel density and species richness have declined and many freshwater mussel species are listed as either State or Federally threatened or endangered species. Environmental degradation from coal mining has been identified as one of the drivers of this decline. An example is the 1996 Lone Mountain slurry spill that directly affected mussel populations, as well as their host fish species. Freshwater mussels feed by filtering small particles from water, thereby improving water quality and providing an essential ecosystem service in rivers and streams. Mussels also serve as a food...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Aquatic,
Aquatic species propagation,
Bank stabilization/erosion control,
Broadleaf,
Conservation easement,
Description of Work USGS will conduct monthly samples of benthic invertebrates, zooplankton, and water quality as well as seasonal sampling of fish and fish diets. This project supports lower trophic sampling in Lake Erie and understanding food webs. An emphasis will be collecting samples from a nearshore to offshore design.
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Accountability,
CSMI,
Ecosystem health,
Fish production,
Food Web,
This is a collaborative project between the University of Oregon and the National Park Service (NPS) to identify potential climate change impacts (i.e., exposure and sensitivity) for cultural landscapes in the NPS Pacific West Region. This project will be conducted in multiple phases. Phase 1 will involve: 1) gathering climate change projections data, 2) identifying anticipated climate change impacts, 3) identifying character-defining features projected to be impacted, and 4) identifying stabilization measures to improve the resilience of those character-defining features to climate change phenomena (or climate trends). This project is a starting point in identifying the most vulnerable cultural landscapes in the...
Description of Work At two of Wisconsin's Areas of Concern (AOCs) on Lake Michigan, the Sheboygan River AOC and Milwaukee Estuary AOC, the USGS will assess whether sediment toxicity from PCBs, PAHs, selected metals, ammonia, or dissolved oxygen is present at acutely toxic or chronically toxic concentrations using sediment toxicity tests conducted with amphipods and midges. Study planning and literature search have been completed. Sediment was collected in October 2016 from sites in the two AOCs and sites in two non-AOC comparison sites. Assesments will be done at two additional sites: Kewaunee River and Oak Creek. Laboratory toxicity tests and chemical analyses are in progress, including sediment toxicity testing...
Categories: Project;
Tags: Area of Concern,
Areas of concern,
Beneficial use impairment,
GLRI,
Great Lakes Restoration Initiative,
Leafy spurge (Euphorbia esula L.; Euphorbiaceae) is a noxious weed accidentally introduced from Eurasia into North America in the late 1800s and early 1900s via multiple shipments of contaminated crop seed. It has spread extensively throughout pasture, rangeland, and natural areas in the Great Plains, inflicting substantial economic and ecological damage. Leafy spurge is unpalatable to most domestic and native ungulates and thus reduces carrying capacity of both rangeland and natural areas. In the four-state region including Montana, North Dakota, South Dakota and Wyoming, costs due to control and reduced forage availability were estimated at $144 million annually. Department of Interior land managers will treat...
Categories: Project
The goal of this project is to improve the practice of prairie reconstruction by developing criteria by which success can be measured and related to reconstruction methodology. To achieve this goal, two teams of two botanists will document plant species present on previously reconstructed prairies at two national wildlife refuges, Neal Smith in Iowa and Glacial Ridge in Minnesota. This information will be used to evaluate the methods used on those reconstructions to determine which methods result in relatively greater presence of desirable planted prairie species and less invasion by exotic species. Field work is slated to begin in 2015.
Categories: Project
Lake Sakakawea is a large (404,810 ac [163,800 ha]) reservoir located on the Missouri River in northwestern and central North Dakota, which recently was designated a high priority area for endangered species management. The reservoir shoreline is irregular, dissected, and consists of a wide variety of substrates, slopes, and aspects. The extent, distribution, and abundance of these features vary annually as lake elevation changes in response to precipitation, melt of Rocky Mountain snowpack, and releases from Garrison and Fort Peck dams. Water levels on Lake Sakakawea have declined over the past decade due to extended drought conditions; in 2005 they reached a record low since the initial flooding of the reservoir....
Categories: Project
Description of WorkTBDGoals & ObjectivesTBDProductsTBD
Categories: Project;
Tags: Ecosystem health,
GLRI,
Great Lakes Restoration Initiative,
Has Spatial,
Lake:Lake Michigan,
Our research focuses on the abiotic and biotic factors that regulate greenhouse gas fluxes of PPR wetlands and uplands to reduce the uncertainties associated with temporal and spatial variability that characterizes these wetland systems. Our studies range from plot-level experiments in wetland catchments situated in grasslands and agricultural fields, to regional- and national-scale modeling to predict changes in soil processes associated with climate and land use. We use a combination of commercial and custom-made sampling devices to facilitate the collection of temporally-intensive data. The ability to extrapolate plot-level fluxes and to assess potential effects of climate and land-use change on wetland ecosystems...
Categories: Project
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