Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10362
Average annual precipitation classes to characterize watersheds in North Carolina Average annual precipitation classes to characterize watersheds in North Carolina
This web site contains the Federal Geographic Data Committee-compliant metadata (documentation) for digital data produced for the North Carolina, Department of Environment and Natural Resources, Public Water Supply Section, Source Water Assessment Program. The metadata are for 11 individual Geographic Information System data sets. An overlay and indexing method was used with the data to...
Authors
Silvia Terziotti, Jo Leslie Eimers
Land-use classes to characterize watersheds and unsaturated zones in North Carolina Land-use classes to characterize watersheds and unsaturated zones in North Carolina
This web site contains the Federal Geographic Data Committee-compliant metadata (documentation) for digital data produced for the North Carolina, Department of Environment and Natural Resources, Public Water Supply Section, Source Water Assessment Program. The metadata are for 11 individual Geographic Information System data sets. An overlay and indexing method was used with the data to...
Authors
Silvia Terziotti, Jo Leslie Eimers
Ground-water contribution classes to characterize watersheds in North Carolina Ground-water contribution classes to characterize watersheds in North Carolina
This web site contains the Federal Geographic Data Committee-compliant metadata (documentation) for digital data produced for the North Carolina, Department of Environment and Natural Resources, Public Water Supply Section, Source Water Assessment Program. The metadata are for 11 individual Geographic Information System data sets. An overlay and indexing method was used with the data to...
Authors
Silvia Terziotti, Jo Leslie Eimers
Hydrologic conditions and water quality in an agricultural area in Kleberg and Nueces Counties, Texas, 1996-98 Hydrologic conditions and water quality in an agricultural area in Kleberg and Nueces Counties, Texas, 1996-98
During 1996?98, rainfall and runoff were monitored on a 49,680-acre agricultural watershed in Kleberg and Nueces Counties in South Texas. Nineteen rainfall samples were analyzed for selected nutrients, and runoff samples from 29 storms were analyzed for major ions, nutrients, and pesticides. Loads of nutrients in rainfall and loads of nutrients and pesticides in runoff were computed. For...
Authors
Darwin J. Ockerman, Brian L. Petri
Influence of natural factors on the quality of midwestern streams and rivers Influence of natural factors on the quality of midwestern streams and rivers
Streams flowing through cropland in the Midwestern Corn Belt differ considerably in their chemical and ecological characteristics, even though agricultural land use is highly intensive throughout the entire region. These differences likely are attributable to differences in riparian vegetation, soil properties, and hydrology. This conclusion is based on results from a study of the upper...
Authors
Stephen D. Porter, Mitchell A. Harris, Stephen J. Kalkhoff
Abstracts from "Coastal Marsh Dieback in the Northern Gulf of Mexico: Extent, Causes, Consequences, and Remedies Abstracts from "Coastal Marsh Dieback in the Northern Gulf of Mexico: Extent, Causes, Consequences, and Remedies
In the spring of 2000, scientists discovered a new and unprecedented loss of salt marsh vegetation in coastal Louisiana and other areas along the northern coast of the Gulf of Mexico. This dieback of salt marsh vegetation, sometimes called the brown marsh phenomenon', primarily involved the rapid browning and dieback of smooth cordgrass (Spanina alterniflora). Coastal Louisiana has...
Authors
C. Edward Proffitt, Tammy Michelle Charron
Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change
An earlier investigation (Turner 1997) concluded that most of the coastal wetland loss in Louisiana was caused by the effects of canal dredging, that loss was near zero in the absence of canals, and that land loss had decreased to near zero by the late 1990s. This analysis was based on a 15-min quadrangle (approximately 68,000 ha) scale that is too large to isolate processes responsible...
Authors
John W. Day, Louis D. Britsch, Suzanne Hawes, Gary P. Shaffer, Denise J. Reed, Donald R. Cahoon
Fire in eastern ecosystems Fire in eastern ecosystems
Prior to Euro-American settlement, fire was a ubiquitous force across most of the Eastern United States. Fire regimes spanned a time-scale from chronic to centuries. Fire severity varied from benign to extreme (fig. 1-2). Today, fire is still a major force on the landscape. In some ecosystems fire stabilizes succession at a particular sere, while in others, succession is set back to...
Authors
Dale D. Wade, Brent L. Brock, Patrick H. Brose, James B. Grace, G. A. Hoch, William A. Patterson III
Disruption and restoration of en route habitat, a case study: The Chenier Plain Disruption and restoration of en route habitat, a case study: The Chenier Plain
Cheniers (relict beach ridges) and other habitats adjacent to ecological barriers may be critical linkages in the migratory pathways of long-distance migratory birds. It is important that these wooded habitats provide enough food and cover at the right time to support these birds’ requirements. To date, little attention has been given to the conservation of coastal woodlands, habitats in...
Authors
Wylie C. Barrow, Chao-Chieh Chen, Robert B. Hamilton, Keith Ouchley, Terry J. Spengler
Louisiana gap analysis project Louisiana gap analysis project
No abstract available.
Authors
James Johnston, Steven Hartley