Conference Papers
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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.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Climate matching as a tool for predicting potential North American spread of Brown Treesnakes
Climate matching identifies extralimital destinations that could be colonized by a potential invasive species on the basis of similarity to climates found in the species’ native range. Climate is a proxy for the factors that determine whether a population will reproduce enough to offset mortality. Previous climate matching models (e.g., Genetic Algorithm for Rule-set Prediction [GARP]) for brown t
Authors
Gordon H. Rodda, Robert N. Reed, Catherine S. Jarnevich
Coastal-change impacts during hurricane katrina: an overview
As part of an ongoing cooperative effort between USGS, NASA and USACE, the barrier islands within the right-front quadrant of Hurricane Katrina were surveyed with airborne lidar both before and after landfall. Dauphin Island, AL was located the farthest from landfall and wave runup intermittently overtopped its central and western sections. The Gulf-side of the island experienced severe erosion, l
Authors
Asbury Sallenger, C. Wayne Wright, Jeff Lillycrop
Coccidioides niches and habitat parameters in the southwestern United States: A matter of scale
To determine habitat attributes and processes suitable for the growth of Coccidioides, soils were collected from sites in Arizona, California, and Utah where Coccidioides is known to have been present. Humans or animals or both have been infected by Coccidioides at all of the sites. Soil variables considered in the upper 20 cm of the soil profile included pH, electrical conductivity, salinity, sel
Authors
F. S. Fisher, M.W. Bultman, S.M. Johnson, D. Pappagianis, E. Zaborsky
Comparison of outgassing models for the Landsat thematic mapper sensors
The Thematic Mapper (TM) is a multi-spectral electro-optical sensor featured onboard both the Landsat 4 (L4) and Landsat 5 (L5) satellites. TM sensors have seven spectral bands with center wavelengths of approximately 0.49, 0.56, 0.66, 0.83, 1.65, 11.5 and 2.21 μm, respectively. The visible near-infrared (VNIR) bands are located on the primary focal plane (PFP), and two short-wave infrared (SWIR)
Authors
E. Micijevic, G. Chander
Consistency of L4 TM absolute calibration with respect to the L5 TM sensor based on near-simultaneous image acquisition
The Landsat archive provides more than 35 years of uninterrupted multispectral remotely sensed data of Earth observations. Since 1972, Landsat missions have carried different types of sensors, from the Return Beam Vidicon (RBV) camera to the Enhanced Thematic Mapper Plus (ETM+). However, the Thematic Mapper (TM) sensors on Landsat 4 (L4) and Landsat 5 (L5), launched in 1982 and 1984 respectively,
Authors
G. Chander, D. L. Helder, R. Malla, E. Micijevic, C. J. Mettler
Coral-gravel storm ridges: examples from the tropical Pacific and Caribbean
Extreme storms in reef environments have long been recognized as a mechanism for depositing ridges of reef-derived coarse clastic sediment. This study revisits the storm ridges formed by Tropical Cyclone Bebe on Funafuti, Tuvalu and Tropical Cyclone Ofa on Upolu, Western Samoa in the South Pacific, and Hurricane Lenny on Bonaire, Netherlands Antilles in the Caribbean. Ridge characteristics produce
Authors
Bruce M. Richmond, Robert A. Morton
Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site
A cross-calibration methodology has been developed using coincident image pairs from the Terra Moderate Resolution Imaging Spectroradiometer (MODIS), the Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+) and the Earth Observing EO-1 Advanced Land Imager (ALI) to verify the absolute radiometric calibration accuracy of these sensors with respect to each other. To quantify the effects due to differ
Authors
G. Chander, A. Angal, T. Choi, D. J. Meyer, X. Xiong, P. M. Teillet
Development and certification of the new SRM 695 trace elements in multi-nutrient fertilizer
During the past seven years, several states within the US have enacted regulations that limit the amounts of selected non-nutritive elements in fertilizers. Internationally, several countries, including Japan, China, and Australia, and the European Union also limit the amount of selected elements in fertilizers. The elements of interest include As, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, Se, and Zn. Ferti
Authors
E.A. MacKey, M.P. Cronise, C.N. Fales, R.R. Greenberg, S.D. Leigh, S.E. Long, A.F. Marlow, K.E. Murphy, R. Oflaz, J.R. Sieber, M.S. Rearick, L.J. Wood, L.L. Yu, S. A. Wilson, Paul H. Briggs, Z. A. Brown, J. Budahn, P.F. Kane, W.L. Hall
Development of a murre (Uria spp.) egg control material
The Seabird Tissue Archival and Monitoring Project (STAMP) is a collaborative Alaska-wide effort by the US Fish and Wildlife Service's Alaska Maritime National Wildlife Refuge (USFWS/AMNWR), the US Geological Survey's Biological Resources Division (USGS/BRD), the Bureau of Indian Affairs Alaska Region Subsistence Branch (BIA/ARSB), and the National Institute of Standards and Technology (NIST) to m
Authors
Stacy S. Vander Pol, M.B. Ellisor, Rebecca S. Pugh, P.R. Becker, D.L. Poster, M.M. Schantz, S.D. Leigh, B.J. Wakeford, David G. Roseneau, Kristin S. Simac
Diet niches of major forage fish in Lake Michigan
A large complex of coregonine species historically dominated the fish community of Lake Michigan. The current species complex is simplified with one remaining coregonine, bloater (Coregonus hoyi), deepwater sculpin (Myoxocephalus thompsoni), slimy sculpin (Cottus cognatus), and two dominant invaders, alewife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax). To better understand the diet r
Authors
R. Douglas Hunter, J.F. Savino, L.M. Ogilvie
Digital floodplain mapping and an analysis of errors involved
Mapping floodplain boundaries using geographical information system (GIS) and digital elevation models (DEMs) was completed in a recent study. However convenient this method may appear at first, the resulting maps potentially can have unaccounted errors. Mapping the floodplain using GIS is faster than mapping manually, and digital mapping is expected to be more common in the future. When mapping i
Authors
C.S. Hamblen, D.T. Soong, X. Cai