Response of birds to thinning young Douglas-fir forests
John P. Hayes, Jennifer M. Weikel, Manuela M. P. Huso, Janet L. Erickson
2003, Fact Sheet 033-03
As a result of recent fire history and decades of even-aged forest management, many coniferous forests in western Oregon are composed of young (20-50 yrs), densely stocked Douglas-fir stands. Often these stands are structurally simple - a single canopy layer with one or two overstory tree species - and have a relatively...
The human footprint in the west: a large-scale analysis of human impacts
Matthias Leu
2003, Fact Sheet 127-03
Background Humans have dramatically altered wildlands in the western United States over the past 100 years by using these lands and the resources they provide. Anthropogenic changes to the landscape, such as urban expansion and development of rural areas, influence the number and kinds of plants and wildlife that remain. In...
USGS West Nile Virus Research Strategy
Gregory Smith, Christopher J. Brand, Emi Saito
2003, Fact Sheet 2004-3002
This plan integrates science across multiple USGS disciplines, and provides national and international opportunities for USGS collaboration with state and federal agencies, academic institutions, and non-governmental organizations throughout the Americas....
Investigating monkeypox in the Wild
Christopher J. Brand, Paul Slota
2003, Fact Sheet 2004-3003
A recent monkeypox outbreak in pet prairie dogs led to the first recorded human case of the disease in the U.S. The outbreak has USGS scientists concerned the disease may spread to wild rodent populations....
Florida springs interdisciplinary science study
Brian G. Katz, Dale W. Griffin, Peter W. Swarzenski, Stephen J. Walsh, Howard L. Jelks
2003, Fact Sheet 008-03
Range-wide conservation assessment of Greater Sage-Grouse and sagebrush habitats
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 056-03
Declining numbers of Greater Sage-grouse (Centrocercus urophasianus) over the past three decades across most of their range accompanied by increasing habitat degradation and loss represent major conservation and management challenges. We are conducting a range-wide Conservation Assessment of Greater Sage-grouse and sagebrush habitats. This assessment is an interagency effort sponsored...
Flooding Associated with Typhoon Chata'an, July 5, 2002, Guam
Richard A. Fontaine
2003, Fact Sheet 061-03
Introduction On July 5, 2002, starting at about 8 a.m., the southern half of the eye of Typhoon Chata'an passed directly over the northern part of the island of Guam. Data collected on Guam indicate that the typhoon had sustained winds of 85 to 90 miles per hour (mi/hr) with gusts...
Real-time ground-water-level monitoring in New Jersey, 2002
Walter D. Jones, Anthony S. Navoy, Daryll A. Pope
2003, Fact Sheet 129-02
This network was created to provide data to indicate water-level trends in shallow ground-water systems within the State of New Jersey and to make the data available in the shortest time possible. The wells in this network are located throughout New Jersey (fig. 1) and were chosen because they are...
Hubbard Glacier, Alaska: growing and advancing in spite of global climate change and the 1986 and 2002 Russell Lake outburst floods
Dennis C. Trabant, Rod S. March, Donald S. Thomas
2003, Fact Sheet 001-03
Hubbard Glacier, the largest calving glacier on the North American Continent (25 percent larger than Rhode Island), advanced across the entrance to 35-mile-long Russell Fiord during June 2002, temporarily turning it into a lake. Hubbard Glacier has been advancing for more than 100 years and has twice closed the entrance...
Continuing the legacy of Lewis and Clark
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 095-03
Cartographic services contract...for everything geographic
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 066-03
The U.S. Geological Survey's (USGS) Cartographic Services Contract (CSC) is used to award work for photogrammetric and mapping services under the umbrella of Architect-Engineer (A&E) contracting. The A&E contract is broad in scope and can accommodate any activity related to standard, nonstandard, graphic, and digital cartographic products. Services provided may...
Surface Water in Hawaii
Delwyn S. Oki
2003, Fact Sheet 045-03
Surface water in Hawaii is a valued resource as well as a potential threat to human lives and property. The surface-water resources of Hawaii are of significant economic, ecologic, cultural, and aesthetic importance. Streams supply more than 50 percent of the irrigation water in Hawaii, and although streams supply only...
Earthquakes-Rattling the Earth's Plumbing System
Michelle Sneed, Devin L. Galloway, William L. Cunningham
2003, Fact Sheet 096-03
Hydrogeologic responses to earthquakes have been known for decades, and have occurred both close to, and thousands of miles from earthquake epicenters. Water wells have become turbid, dry or begun flowing, discharge of springs and ground water to streams has increased and new springs have formed, and well and surface-water...
Recoverability and Vulnerability of Desert Ecosystems
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 058-03
Pathways of Biological Production in Large Rivers
Steve Gutreuter
2003, Fact Sheet 2004-3036
Geographic Analysis and Monitoring Program
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 049-03
At-Risk Riverine Fishes: Paddlefish and Lake Sturgeon
Brent Knights, Steve Zigler
2003, Fact Sheet 2004-3038
Geohydrology of Recharge and Seawater Intrusion in the Pajaro Valley, Santa Cruz and Monterey Counties, California
Randall T. Hanson
2003, Fact Sheet 044-03
The U.S. Geological Survey (USGS) in cooperation with the Pajaro Valley Water Management Agency (PVWMA), has completed the collection and analyses of geologic, hydrologic, geophysical, and geochemical data in the coastal aquifer systems of the Pajaro Valley (fig. 1). These data were collected to delineate the geohydrologic framework of seawater intrusion,...
Helping to combat chronic wasting disease
Scott Wright, Paul Slota
2003, Fact Sheet 2004-3008
Chronic Wasting Disease (CWD) is a disease of the nervous system that results in distinctive lesions in the brain. CWD affects elk, white-tailed deer, and mule deer, but has not been documented in livestock or humans. The cause is unknown and no treatment is available. Infected deer and elk can...
Effects of hydrology on red mangrove recruits
Thomas W. Doyle
2003, Fact Sheet 029-03
Coastal wetlands along the Gulf of Mexico have been experiencing significant shifts in hydrology and salinity levels over the past century as a result of changes in sea level and freshwater drainage patterns. Local land management in coastal zones has also impacted the hydrologic regimes of salt marshes and mangrove...
Native plants for effective coastal wetland restoration
Rebecca J. Howard
2003, Fact Sheet 090-03
Plant communities, along with soils and appropriate water regimes, are essential components of healthy wetland systems. In Louisiana, the loss of wetland habitat continues to be an issue of major concern. Wetland loss is caused by several interacting factors, both natural and human-induced (e.g., erosion and saltwater intrusion from the...
The Amphibian Research and Monitoring Initiative in the Pacific Northwest
M. J. Adams
2003, Fact Sheet 020-03
Amphibians have been disappearing from many locations around the world with reports of declines increasing in recent decades. Some of the most dramatic declines have occurred in areas that were thought to be protected from human disturbance. For example, the once-common boreal toad has virtually disappeared from Rocky Mountain National...
Managing floodplain forests for bird diversity
Melinda Knutson
2003, Fact Sheet 2004-3047
Predicting future mangrove forest migration in the Everglades under rising sea level
Thomas W. Doyle
2003, Fact Sheet 030-03
Mangroves are highly productive ecosystems that provide valued habitat for fish and shorebirds. Mangrove forests are universally composed of relatively few tree species and a single overstory strata. Three species of true mangroves are common to intertidal zones of the Caribbean and Gulf of Mexico Coast, namely, black mangrove (Avicennia...
Frequency of debris flows in Grand Canyon
Robert H. Webb, Peter G. Griffiths, Tillie A. Klearman
2003, Fact Sheet 065-03
No abstract available....
