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3805 results.

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Page 84, results 2076 - 2100

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Nutrient controls on biocomplexity of mangrove ecosystems
Karen L. McKee
2004, Fact Sheet 2004-3124
Mangrove forests are important coastal ecosystems that provide a variety of ecological and societal services. These intertidal, tree-dominated communities along tropical coastlines are often described as “simple systems,” compared to other tropical forests with larger numbers of plant species and multiple understory strata; however, mangrove ecosystems have complex trophic structures,...
Map margin information
Water Resources Division, U.S. Geological Survey
2004, Fact Sheet 116265
Ever wonder what all those little numbers are on the borders of your map? Here are the facts......
Factors affecting ground-water quality in Oakland County, Michigan
Water Resources Division, U.S. Geological Survey
2004, Fact Sheet 2004-3102
Ground water is water stored in pores within soil and rock beneath the land surface. When these pores are connected so that water can be transmitted to wells or springs, these bodies of soil and rock are termed aquifers, from two Greek words meaning “water” and “to bear.” ...
Michigan lakes: An assessment of water quality
R. J. Minnerick
2004, Fact Sheet 2004-3048
Michigan has more than 11,000 inland lakes, that provide countless recreational opportunities and are an important resource that makes tourism and recreation a $15-billion-dollar per-year industry in the State (Stynes, 2002). Knowledge of the water-quality characteristics of inland lakes is essential for the current and future management of these resources.Historically...
Endangered fish threatened by Asian fish tapeworm
Rebecca A. Cole
2004, Fact Sheet 2005-3057
The Asian fish tapeworm, an exotic parasite, has invaded the endangered humpback chub (Gila cypha) population from the Colorado and Little Colorado Rivers in Grand Canyon, Arizona. This parasite causes disease and death in carp in aquaculture settings and may retard growth in hatchery-reared roundtail chub (Gila robusta). Other consequences...
The U.S. Geological Survey Library
Water Resources Division, U.S. Geological Survey
2004, Fact Sheet 125-03
Established in 1879, to build and organize a collection of scientific materials in the earth sciences, the U.S. Geological Survey (USGS) Library is the largest earth sciences collection in the world. The USGS Library System is managed by the Geographic Information Office (GIO), Information Policy and Services Office, and includes four libraries in Reston, Va.,...
Arsenic, nitrate, and chloride in groundwater, Oakland County, Michigan
Stephen S. Aichele
2004, Fact Sheet 2004-3120
In 1996, the U.S. Geological Survey (USGS), in cooperation with the Michigan Department of Environmental Quality (MDEQ) and nine southeast Michigan counties, began a study of the factors controlling arsenic concentrations in drinking water. The early results of this study raised broader concerns in Oakland County about the quality of...
The Enterprise Web
Water Resources Division, U.S. Geological Survey
2004, Fact Sheet 123-03
The Enterprise Web is a bureau wide approach to managing U.S. Geological Survey (USGS) information on the Web. Under the direction of the USGS Geographic Information Office, the Enterprise Web operates the Bureau's Web servers and their associated sites. Through a network of people and resources, the Enterprise Web or "E-Web" works with programs and...
Internet Map Service for Environmental Health in the U.S.-Mexico Border Region
Denny Buckler, Jim Stefanov
2004, Fact Sheet 2004-3140
The objective of this project is to provide an earth and biological resources database within a geographic framework using an Internet Map Service (IMS) to further our understanding of the linkages between the condition of the physical environment and public health issues. The IMS is now available on the Internet...
Lake Worth bottom sediments : A chronicle of water-quality changes in western Fort Worth, Texas, 1914-2001
Christopher L. Braun, Glenn R. Harwell
2004, Fact Sheet 2004-3077
In spring 2000, the Texas Department of Health issued a fish-consumption advisory for Lake Worth, Tex., because of elevated concentrations of polychlorinated biphenyls (PCBs) in fish (Texas Department of Health, 2000). In response to the advisory and in cooperation with the U.S. Air Force, the U.S. Geological Survey (USGS) collected...
Summary of hydrogeology and simulation of ground-water flow and land-surface subsidence in the northern part of the Gulf Coast aquifer system, Texas
Mark C. Kasmarek, James L. Robinson
2004, Fact Sheet 2004-3076
The northern part of the Gulf Coast aquifer system in Texas, which includes the Chicot, Evangeline, and Jasper aquifers, supplies most of the water used for industrial, municipal, agricultural, and commercial purposes for an approximately 25,000- square-mile (mi2) area that includes the Beaumont and Houston metropolitan areas. The area has...
Oil and gas assessment of Yukon Flats, East-Central Alaska, 2004
Richard G. Stanley, Thomas S. Ahlbrandt, Ronald R. Charpentier, Troy A. Cook, Jesse M. Crews, Timothy R. Klett, Paul G. Lillis, Robert L. Morin, Jeffrey D. Phillips, Richard M. Pollastro, Elisabeth L. Rowan, Richard W. Saltus, Christopher J. Schenk, Megan K. Simpson, Alison B. Till, Sandra M. Troutman, James W. Hendley II
2004, Fact Sheet 2004-3121
Water use in Kansas, 1990-2000
Joan F. Kenny, Cristi V. Hansen
2004, Fact Sheet 2004-3133
This fact sheet compares water use in 1990, 1995, and 2000 for the 12 major river basins in Kansas. Of these 3 years, irrigation water use was largest in 1990 and smallest in 1995, largely because of differing climatic conditions. Irrigation averaged about 85 percent of total water use in...
Demonstration-site development and phytoremediation processes associated with trichloroethene (TCE) in ground water, Naval Air Station-Joint Reserve Base Carswell Field, Fort Worth, Texas
Sachin D. Shah, Christopher L. Braun
2004, Fact Sheet 2004-3087
A field-scale phytoremediation demonstration study was initiated in 1996 by the U.S. Geological Survey (USGS), in cooperation with the U.S. Air Force, at a site on Naval Air StationJoint Reserve Base Carswell Field (NAS–JRB) adjacent to Air Force Plant 4 (AFP4) in Fort Worth, Tex. (fig. 1). Trichloroethene (TCE) has...
Global change impacts on mangrove ecosystems
Karen L. McKee
2004, Fact Sheet 2004-3125
Mangroves are tropical/subtropical communities of primarily tree species that grow in the intertidal zone. These tidal forests are important coastal ecosystems that are valued for a variety of ecological and societal goods and services. Major local threats to mangrove ecosystems worldwide include clearcutting and trimming of forests for urban, agricultural,...