Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5565
Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region
This report is a deliverable to the RESTORE Council for Task 7: Document the existing baseline habitat and water quality conditions prior to implementation of the restoration projects; these baseline conditions will serve as a basis for measuring change/progress after restoration. It is the second in a series of CMAP reports. The first report describes the process and development of the...
Authors
Julie Bosch, Heidi Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon M. Hart, Sarah Davidson Hile, Jacob Howell, Claudia Laurenzano, Michael T. Lee, Terrence A. McCloskey, Terry McTigue, Michelle B. Meyers, Scott V. Mize, Mark E. Monaco, Kevin Owen, Richard A. Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Gregory D. Steyer, Kevin J. Suir, Christopher M. Swarzenski, Katie Watson
Envisioning a national invasive species information framework Envisioning a national invasive species information framework
With a view toward creating a national Early Detection and Rapid Response Program (EDRR) program, the United States National Invasive Species Council Management Plan for 2016–2018 calls for a series of assessments of federal EDRR capacities, including the evaluation of “relevant federal information systems to provide the data and other information necessary for risk analyses/horizon...
Authors
Jamie K Reaser, Annie Simpson, Gerald Guala, Jeffrey Morisette, Pam Fuller
USGS telemetry database and analyses in support of SEAcarP USGS telemetry database and analyses in support of SEAcarP
No abstract available.
Authors
Brent C. Knights, Marybeth K. Brey, Jessica C. Stanton, Travis J. Harrison, Timothy J. Fox, Enrika Hlavacek, James J. Duncker
Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill
Extensive information is available about infaunal soft-sediment communities in the Gulf of Mexico (Gulf) (Pequegnat et al. 1990, Rowe and Kennicutt II 2009, Wei et al. 2010), particularly from the large-scale sampling effort of the Deep Gulf of Mexico Benthos (DGOMB) project in the early 2000s (Rowe and Kennicutt II 2009). Infaunal soft-sediment communities in the northern Gulf differ by
Authors
Jill R. Bourque, Amanda W.J. Demopoulos
A hydrogeomorphic classification of connectivity of large rivers of the Upper Midwest, United States A hydrogeomorphic classification of connectivity of large rivers of the Upper Midwest, United States
River connectivity is defined as the water-mediated exchange of matter, energy, and biota between different elements of the riverine landscape. Connectivity is an especially important concept in large-river corridors (channel plus floodplain ) because large rivers integrate fluxes of water, sediment, nutrients, contaminants, and other transported constituents emanating from large...
Authors
Robert B. Jacobson, Jason J. Rohweder, Nathan R. De Jager
Scientist’s guide to developing explanatory statistical models using causal analysis principles Scientist’s guide to developing explanatory statistical models using causal analysis principles
Recent discussions of model selection and multimodel inference highlight a general challenge for researchers, which is how to clearly convey the explanatory content of a hypothesized model or set of competing models. The advice from statisticians for scientists employing multimodel inference is to develop a well‐thought‐out set of candidate models for comparison, though precise...
Authors
James B. Grace, Kathryn Irvine
Simulation of groundwater flow and chloride transport in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand of the Baton Rouge area, Louisiana Simulation of groundwater flow and chloride transport in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand of the Baton Rouge area, Louisiana
Groundwater withdrawals since the 1940s have lowered water levels, altered groundwater-flow directions, and caused saltwater to intrude within some freshwater-containing sands of the fluvial-deltaic Southern Hills regional aquifer system beneath Baton Rouge, Louisiana. New interpretations of stratigraphic correlations amongst geophysical well logs were utilized to revise a hydrogeologic...
Authors
Charles E. Heywood, Maxwell A. Lindaman, John K. Lovelace
An experimental evaluation of the feasibility of inferring concentrations of a visible tracer dye from remotely sensed data in turbid rivers An experimental evaluation of the feasibility of inferring concentrations of a visible tracer dye from remotely sensed data in turbid rivers
The movement of contaminants and biota within river channels is influenced by the flow field via various processes of dispersion. Understanding and modeling of these processes thus can facilitate applications ranging from the prediction of travel times for spills of toxic materials to the simulation of larval drift for endangered species of fish. A common means of examining dispersion in...
Authors
Carl J. Legleiter, Paul Manley, Susannah O. Erwin, Edward A. Bulliner
Plot Locator: An app for locating plots in the field Plot Locator: An app for locating plots in the field
PREMISE: One of the challenges in field biology is locating previously sampled plots. The Plot Locator app was developed to assist field biologists with plot identification and location, with or without GPS or online connectivity. METHODS AND RESULTS: The Plot Locator Android app helps users locate field plots by creating a searchable database that stores study area information, such as...
Authors
Jere Boudell, Beth Middleton
Using maintenance records from a long-term sensor monitoring network to evaluate the relationship between maintenance schedule and data quality Using maintenance records from a long-term sensor monitoring network to evaluate the relationship between maintenance schedule and data quality
Sensor-based environmental monitoring networks are beginning to provide the large-scale, long-term data required to address important fundamental and applied questions in ecology. However, the data quality from deployed sensors can be difficult and costly to ensure. In this study, we use maintenance records from the 12-year history of Louisiana’s Coastwide Reference Monitoring System...
Authors
Donald R. Schoolmaster, Sarai Piazza
Understanding tidal marsh trajectories: Evaluation of multiple indicators of marsh persistence Understanding tidal marsh trajectories: Evaluation of multiple indicators of marsh persistence
Robust assessments of ecosystem stability are critical for informing conservation and management decisions. Tidal marsh ecosystems provide vital services, yet are globally threatened by anthropogenic alterations to physical and biological processes. A variety of monitoring and modeling approaches have been undertaken to determine which tidal marshes are likely to persist into the future...
Authors
Kerstin Wasson, Neil K. Ganju, Zafer Defne, Charlie Endris, Tracy Elsey-Quirk, Karen M. Thorne, Chase M. Freeman, Glenn R. Guntenspergen, Daniel J. Nowacki, Kenneth B. Raposa
Simulation of post-hurricane impact on invasive species with biological control management Simulation of post-hurricane impact on invasive species with biological control management
Understanding the effects of hurricanes and other large storms on ecological communities and the post-event recovery in these communities can guide management and ecosystem restoration. This is particularly important for communities impacted by invasive species, as the hurricane may affect control efforts. Here we consider the effect of a hurricane on tree communities in southern Florida...
Authors
Linhao Xu, Marya Claire Zdechlik, Melissa C. Smith, Min B. Rayamajhi, Don DeAngelis, Bo Zhang