Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
A standard protocol for describing individual-based and agent-based models A standard protocol for describing individual-based and agent-based models
Simulation models that describe autonomous individual organisms (individual based models, IBM) or agents (agent-based models, ABM) have become a widely used tool, not only in ecology, but also in many other disciplines dealing with complex systems made up of autonomous entities. However, there is no standard protocol for describing such simulation models, which can make them difficult to
Authors
Volker Grimm, Uta Berger, Finn Bastiansen, Sigrunn Eliassen, Vincent Ginot, Jarl Giske, John Goss-Custard, Tamara Grand, Simone K. Heinz, Geir Huse, Andreas Huth, Jane U. Jepsen, Christian Jorgensen, Wolf M. Mooij, Birgit Muller, Guy Pe’er, Cyril Piou, Steven F. Railsback, Andrew M. Robbins, Martha M. Robbins, Eva Rossmanith, Nadja Ruger, Espen Strand, Sami Souissi, Richard A. Stillman, Rune Vabo, Ute Visser, Donald L. DeAngelis
Hydrologic and water-quality data, Honey Creek State Natural Area, Comal County, Texas, August 2001-September 2003 Hydrologic and water-quality data, Honey Creek State Natural Area, Comal County, Texas, August 2001-September 2003
The U.S. Geological Survey collected rainfall, streamflow, evapotranspiration, and rainfall and stormflow water-quality data from seven sites in two adjacent watersheds in the Honey Creek State Natural Area, Comal County, Texas, during August 2001–September 2003, in cooperation with the U.S. Department of Agriculture, Natural Resources Conservation Service, and the San Antonio Water...
Authors
Richard N. Slattery, Allen L. Furlow, Darwin J. Ockerman
Estimated flood-inundation mapping for the Lower Blue River in Kansas City, Missouri, 2003-2005 Estimated flood-inundation mapping for the Lower Blue River in Kansas City, Missouri, 2003-2005
The U.S. Geological Survey, in cooperation with the city of Kansas City, Missouri, began a study in 2003 of the lower Blue River in Kansas City, Missouri, from Gregory Boulevard to the mouth at the Missouri River to determine the estimated extent of flood inundation in the Blue River valley from flooding on the lower Blue River and from Missouri River backwater. Much of the lower Blue...
Authors
Brian P. Kelly, Paul H. Rydlund
Interdisciplinary science in support of environmental health along the United States-Mexico border Interdisciplinary science in support of environmental health along the United States-Mexico border
The diverse, fragile ecosystems of the borderlands have been pushed beyond sustainable levels due to rapid population growth and land-use changes. Water shortages and pollution, poor air quality, increased soil salinities, residual pesticides and heavy metal contaminants are some of the many stressors that are degrading the quality of life in the borderlands. The relationship between...
Authors
Diana Papoulias, Jean Parcher, Jim Stefanov, Ric Page
Water-level decline in the Apalachicola River, Florida, from 1954 to 2004, and effects on floodplain habitats Water-level decline in the Apalachicola River, Florida, from 1954 to 2004, and effects on floodplain habitats
From 1954 to 2004, water levels declined in the nontidal reach of the Apalachicola River, Florida, as a result of long-term changes in stage-discharge relations. Channel widening and deepening, which occurred throughout much of the river, apparently caused the declines. The period of most rapid channel enlargement began in 1954 and occurred primarily as a gradual erosional process over...
Authors
Helen M. Light, Kirk R. Vincent, Melanie R. Darst, Franklin D. Price
Monitoring the Recovery of the Sparta Aquifer in Southern Arkansas and Northern Louisiana Monitoring the Recovery of the Sparta Aquifer in Southern Arkansas and Northern Louisiana
The Sparta aquifer supplies the majority of water for industrial, municipal, and agricultural uses in Union County, Arkansas, and the surrounding area. In Union County, the Sparta aquifer has been used increasingly since development began in the early 1920s, resulting in water-level declines of more than 360 feet (ft) in some areas. In addition, water quality of the Sparta aquifer has...
Authors
Rheannon M. Scheiderer, David A. Freiwald
Compilation of water-resources data and hydrogeologic setting for four research stations in the Piedmont and Blue Ridge Physiographic Provinces of North Carolina, 2000—2004 Compilation of water-resources data and hydrogeologic setting for four research stations in the Piedmont and Blue Ridge Physiographic Provinces of North Carolina, 2000—2004
Water-resources data were collected to describe the hydrologic conditions at four research stations in the Piedmont and Blue Ridge Physiographic Provinces of North Carolina. Data collected by the U.S. Geological Survey and the North Carolina Department of Environment and Natural Resources, Division of Water Quality, from September 2000 through September 2004 are presented in this report...
Authors
Brad A. Huffman, Cassandra A. Pfeifle, Melinda J. Chapman, Richard E. Bolich, Ted R. Campbell, Donald J. Geddes, Charles G. Pippin
Coastal circulation and sediment dynamics in Hanalei Bay, Kaua'i, Hawaii. Part III: Studies of sediment toxicity Coastal circulation and sediment dynamics in Hanalei Bay, Kaua'i, Hawaii. Part III: Studies of sediment toxicity
Toxicity tests are commonly conducted as a measure of the bioavailability of toxic chemicals to biota in an environment. Chemical analyses alone are insufficient to determine whether contaminants pose a threat to biota. Porewater toxicity tests are extremely sensitive to a broad range of contaminants in marine environments and provide ecologically relevant data on sensitive life stages...
Authors
Robert S. Carr, Marion Nipper, Michael Field, James M. Biedenbach
Chapter B. Physical, Chemical, and Biological Responses of Streams to Increasing Watershed Urbanization in the Piedmont Ecoregion of Georgia and Alabama, 2003 Chapter B. Physical, Chemical, and Biological Responses of Streams to Increasing Watershed Urbanization in the Piedmont Ecoregion of Georgia and Alabama, 2003
As part of the U.S. Geological Survey National Water-Quality Assessment Program?s effort to assess the physical, chemical, and biological responses of streams to urbanization, 30 wadable streams were sampled near Atlanta, Ga., during 2002?2003. Watersheds were selected to minimize natural factors such as geology, altitude, and climate while representing a range of urban development. A...
Authors
M. Brian Gregory, Daniel L. Calhoun
Along-Track Reef Imaging System (ATRIS) Along-Track Reef Imaging System (ATRIS)
"Along-Track Reef Imaging System (ATRIS)" describes the U.S. Geological Survey's Along-Track Reef Imaging System, a boat-based sensor package for rapidly mapping shallow water benthic environments. ATRIS acquires high resolution, color digital images that are accurately geo-located in real-time.
Authors
John Brock, Dave Zawada
Extracting shorelines from NASA airborne topographic lidar-derived digital elevation models Extracting shorelines from NASA airborne topographic lidar-derived digital elevation models
This report documents part of the National Park Service (NPS)/U.S. Geological Survey (USGS)/National Aeronautics and Space Administration (NASA) Aerial Data Collection and Creation of Products for Park Vital Signs Project. This report is one in a series that describes methods for extracting topographic features from aerial survey data as part of a joint project among the NPS Inventory...
Authors
M. Harris, J. Brock, A. Nayegandhi, M. Duffy
Water resources data, Florida, water year 2005. Volume 1A: northeast Florida - Surface water Water resources data, Florida, water year 2005. Volume 1A: northeast Florida - Surface water
Water resources data for the 2005 water year in Florida consist of continuous or daily discharge for 429 streams, periodic discharge for 9 streams, continuous or daily stage for 218 streams, periodic stage for 5 streams, peak stage and discharge for 28 streams; continuous or daily elevations for 15 lakes, periodic elevations for 23 lakes; continuous ground-water levels for 401 wells...
Authors
A.P. Nazarian, E.P. Simonds, S.M. Dickerson