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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6198
Modeling the distribution of neotropical birds throughout the Americas Modeling the distribution of neotropical birds throughout the Americas
I assessed tbe geographic information system (GIS) model and data layers used to create individual Neotropical bird species distribution maps from habitat data contained in the Ecological and Distributional Databases in 'Neotropical Birds: Ecology and Conservation' by D.F. Stotz, J.W. Fitzpatrick, T.A. Parker Ill, and D.K. Moskovits.
Authors
I. Thomas
Monitoring is not enough: on the need for a model-based approach to migratory bird management Monitoring is not enough: on the need for a model-based approach to migratory bird management
Informed management requires information about system state and about effects of potential management actions on system state. Population monitoring can provide the needed information about system state, as well as information that can be used to investigate effects of management actions. Three methods for investigating effects of management on bird populations are (1) retrospective...
Authors
J.D. Nichols
Monitoring survival rates of landbirds at varying spatial scales: An application of the MAPS Program Monitoring survival rates of landbirds at varying spatial scales: An application of the MAPS Program
Survivorship is a primary demographic parameter affecting population dynamics, and thus trends in species abundance. The Monitoring Avian Productivity and Survivorship (MAPS) program is a cooperative effort designed to monitor landbird demographic parameters. A principle goal of MAPS is to estimate annual survivorship and identify spatial patterns and temporal trends in these rates. We...
Authors
D.K. Rosenberg, D.F. DeSante, J.E. Hines
Mortality of burbot from sea lamprey attack and initial analyses of burbot blood Mortality of burbot from sea lamprey attack and initial analyses of burbot blood
No abstract available.
Authors
William D. Swink, Kim T. Fredricks
Natural remediation in the Great Lakes Natural remediation in the Great Lakes
Overall, the existence of stricter environmental laws during the last 30 years and a reduction in the manufacturing base in the Great Lakes has resulted in improvement in conditions in harbors, rivers, and nearshore waters. Problems remain, such as the inability to dredge certain harbors and remove sediments because of lack of disposal facilities for contaminated sediments. Because of...
Authors
Dora R. Passino-Reader, Michael A. Kamrin, James P. Hickey
Natural resource and ecosystem costs of coastal hazards Natural resource and ecosystem costs of coastal hazards
Describes the topic of natural resource and ecosystem costs of coastal hazards through the work of the John Heinz III Center for Science, Economics and the Environment.
Authors
H. Kunreuther, R. Platt, S. Baruch, R. Bernknopf, M. Buckley, V. Burkett, D. Conrad, T. Davidson, K. Deutsch, D. Geis, M. Jannereth, A. Knap, H. Lane, G. Ljung, M. McCauley, D. Mileti, T. Miller, B. Morrow, J. Meyers, R. A. Pielke, A. Pratt, J. Tripp
Obsidian hydration dating of Quaternary events Obsidian hydration dating of Quaternary events
Abstract has not been submitted
Authors
K. L. Pierce, Irving Friedman
Painted Bunting Breeding Bird Survey trends associated with landscape changes in Georgia and South Carolina Painted Bunting Breeding Bird Survey trends associated with landscape changes in Georgia and South Carolina
Landscape changes during the first 3 decades of the Breeding Bird Survey (BBS) may account for the Painted Bunting's declining population trend. In the southeastern U.S., it is estimated that this bunting has declined 3.5 % per year since 1966. I collected landscape data centered on identical 5-stop areas (n = 33, 306 ha each) of the BBS during early (1960s - 1970s) and late decades...
Authors
J.M. Meyers
Population and habitat assessment: Monitoring bird populations over large areas: Introduction Population and habitat assessment: Monitoring bird populations over large areas: Introduction
Monitoring provides essential information about status and change in bird populations. For Neotropical Migrant Birds (NTMBs), the North American Breeding Bird Survey (BBS) has been particularly influential in documenting regional population change and often is cited as justification for management actions. However, as with most bird surveys, the design of the BBS, and the geographic...
Authors
J.R. Sauer, R.J. Cooper
Population and habitat viability assessments for Golden-cheeked Warblers and Black-capped Vireos: Usefulness to Partners in Flight Conservation Planning Population and habitat viability assessments for Golden-cheeked Warblers and Black-capped Vireos: Usefulness to Partners in Flight Conservation Planning
Golden-cheeked Warblers and Black-capped Vireos are Neotropical migratory birds that are federally listed as endangered. Recovery plans for both species advise the use of viability modeling as a tool for setting specific recovery and management targets. Population and Habitat Viability Assessment workshops were conducted to develop population targets and conservation recommendations for...
Authors
C.J. Beardmore, Jeff S. Hatfield