Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
Stormwater runoff for selected watersheds in the Edwards Aquifer recharge zone, Bexar County, Texas, 1996-98 Stormwater runoff for selected watersheds in the Edwards Aquifer recharge zone, Bexar County, Texas, 1996-98
The Edwards aquifer is one of the most productive carbonate aquifers in the Nation. The dissolution-modified, faulted limestone aquifer is the sole source of public water supply for San Antonio, Texas (fig. 1) and is the major source of water for Bexar County. In addition to providing public water supply to more than 1 million people, the Edwards aquifer supplies large quantities of...
Authors
D.J. Ockerman, B.L. Petri, R.N. Slattery
Texas Texas
In 1997, the Texas Legislature passed a comprehensive revision to the Texas Water Code. This legislation (Senate Bill 1) changed water planning in Texas from a statewide to a regional activity. By September 2001, the 16 regions created by Senate Bill 1 must produce water plans to address their water needs during drought-of-record conditions, and must identify water-management strategies...
Authors
Water Resources Division U.S. Geological Survey
The relationship between species density and community biomass in grazed and ungrazed coastal meadows The relationship between species density and community biomass in grazed and ungrazed coastal meadows
Previous studies have indicated that the relationship between community biomass and species density can be represented by a multivariate model in which abiotic variables influence species density both through effects on biomass and through effects on the species pool. In this paper, we use data from grazed and ungrazed coastal meadows in Finland to evaluate and extend this general...
Authors
James B. Grace, H. Jutila
Physical setting: Chapter 1 in Initial biotic survey of Lisbon Bottom, Big Muddy National Fish and Wildlife Refuge Physical setting: Chapter 1 in Initial biotic survey of Lisbon Bottom, Big Muddy National Fish and Wildlife Refuge
Lisbon Bottom consists of approximately 875 ha of river bottom along the Missouri River in Howard County, Missouri, from approximately river mile (RM) 213 to RM 219. As used in this report, the Lisbon Bottom area also includes the main channel of the Missouri River adjacent to the Lisbon Bottom and portions of the adjacent flood plain in Saline County, Missouri. Before regulation and...
Authors
Robert B. Jacobson, Mark S. Laustrup, Ellen A. Ehrhardt, Curt Niebur, Raymond E. Arvidson
Workshop summary, conclusions and recommendations Workshop summary, conclusions and recommendations
No abstract available.
Authors
W.H. Benson, R.T. Di Giulio, D. E. Tillitt, L. Birnbaum, P.L deFur, Jay W. Gooch, Ellen Mihaich, C. Tyler
Salinity as a constraint on growth of oligohaline marsh macrophytes. II. Salt pulses and recovery potential Salinity as a constraint on growth of oligohaline marsh macrophytes. II. Salt pulses and recovery potential
The ability of common oligohaline marsh macrophytes of the northern Gulf of Mexico coast to recover from pulses of increased salinity was investigated in a greenhouse experiment with Eleocharis palustris, Panicum hemitomon, Sagittaria lancifolia, and Scirpus americanus monocultures. Components of salinity pulses applied were final salinity reached (6 or 12 g/L), salinity influx rate (3 d...
Authors
R.J. Howard, I.A. Mendelssohn
Salinity as a constraint on growth of oligohaline marsh macrophytes. I. Species variation in stress tolerance Salinity as a constraint on growth of oligohaline marsh macrophytes. I. Species variation in stress tolerance
The effects of increased salinity on plant growth were examined in a greenhouse experiment with four species common to oligohaline marshes of the northern Gulf of Mexico: Eleocharis palustris, Panicum hemitomon, Sagittaria lancifolia, and Scirpus americanus. Effects of final salinity reached (6 or 12 g/L), salinity influx rate (3 d or 3 wk), and duration of exposure (1, 2, or 3 mo) were
Authors
R.J. Howard, I.A. Mendelssohn
Testing water quality for pesticide pollution: U.S. Geological Survey investigations reveal widespread contamination of the nation's water resources Testing water quality for pesticide pollution: U.S. Geological Survey investigations reveal widespread contamination of the nation's water resources
No abstract available.
Authors
Robert J. Gilliom, Jack E. Barbash, Dana W. Kolpin, Steven J. Larson
Examining freshwater-saltwater interface processes with four radium isotopes Examining freshwater-saltwater interface processes with four radium isotopes
No abstract available.
Authors
Peter W. Swarzenski
The effects of global climate change on seagrasses The effects of global climate change on seagrasses
The increasing rate of global climate change seen in this century, and predicted to accelerate into the next, will significantly impact the Earth's oceans. In this review, we examine previously published seagrass research through a lens of global climate change in order to consider the potential effects on the world's seagrasses. A primary effect of increased global temperature on...
Authors
Frederick T. Short, Hilary A. Neckles