Conference Papers
Science Quality and Integrity
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 almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Metadata for data rescue and data at risk Metadata for data rescue and data at risk
Scientific data age, become stale, fall into disuse and run tremendous risks of being forgotten and lost. These problems can be addressed by archiving and managing scientific data over time, and establishing practices that facilitate data discovery and reuse. Metadata documentation is integral to this work and essential for measuring and assessing high priority data preservation cases...
Authors
William L. Anderson, John Faundeen, Jane Greenberg, Fraser Taylor
Programming PHREEQC calculations with C++ and Python a comparative study Programming PHREEQC calculations with C++ and Python a comparative study
The new IPhreeqc module provides an application programming interface (API) to facilitate coupling of other codes with the U.S. Geological Survey geochemical model PHREEQC. Traditionally, loose coupling of PHREEQC with other applications required methods to create PHREEQC input files, start external PHREEQC processes, and process PHREEQC output files. IPhreeqc eliminates most of this...
Authors
Scott R. Charlton, David L. Parkhurst, Mike Muller
Delayed age at weaning in Southeast Alaska Steller sea lions determined using stable isotopes of carbon and nitrogen Delayed age at weaning in Southeast Alaska Steller sea lions determined using stable isotopes of carbon and nitrogen
No abstract available.
Authors
Lorrie D. Rea, A.R. Banks, Sean D. Farley, Craig A. Stricker, B. Fadely, J. Mellish, A. Christ, K. Pitcher
Foraging ecology of bottlenose dolphins: a stable isotopic reconstruction over six decades Foraging ecology of bottlenose dolphins: a stable isotopic reconstruction over six decades
No abstract available.
Authors
S.L. Rossman, N.B. Barros, Craig A. Stricker, P.H. Ostrom, R.S. Wells
The history of mammal eradications in Hawai`i and the United States associated islands of the Central Pacific The history of mammal eradications in Hawai`i and the United States associated islands of the Central Pacific
Many eradications of mammal taxa have been accomplished on United States associated islands of the Central Pacific, beginning in 1910. Commonly eradicated species are rabbits (Oryctolagus cuniculus), rats (Rattus spp.), feral cats (Felis catus), and several feral ungulates from smaller islands and fenced natural areas on larger Hawaiian Islands. Vegetation and avifauna have demonstrated...
Authors
S.C. Hess, J.D. Jacobi
Biologically-mediated flux of trace metals from streams to riparian spiders: a large scale survey in mineralized alpine ecosystems Biologically-mediated flux of trace metals from streams to riparian spiders: a large scale survey in mineralized alpine ecosystems
No abstract available.
Authors
J.M. Kraus, R. B. Wanty, T.S. Schmidt, D.M. Walters, C. A. Stricker
Exploring the potential for a fused Landsat-MODIS snow covered area product Exploring the potential for a fused Landsat-MODIS snow covered area product
Results from nine 3 x 3 km study areas in the Rocky Mountains of Colorado, USA demonstrate there is potential for using sporadically acquired Landsat images in combination with daily coarse resolution fractional snow covered area (SCA) images to produce daily high resolution binary SCA images. The results also highlight several challenges to implementing this type of approach. The...
Authors
David J. Selkowitz
Catfish science: Status and trends in the 21st century Catfish science: Status and trends in the 21st century
Catfish science, the study of the fish order Siluriformes, is a diverse and expanding field in terms of advances and breadth of topics. We compiled literature from primary fisheries journals as an index of interest and advances in catfish science to examine temporal trends in the field. The number of catfish scientific publications varied over the past century with strong peaks during...
Authors
Thomas J. Kwak, Mark T. Porath, Paul H. Michaletz, Vincent H. Travnichek
Developing a regional canopy fuels assessment strategy using multi-scale lidar Developing a regional canopy fuels assessment strategy using multi-scale lidar
Accurate assessments of canopy fuels are needed by fire scientists to understand fire behavior and to predict future fire occurrence. A key descriptor for canopy fuels is canopy bulk density (CBD). CBD is closely linked to the structure of the canopy; therefore, lidar measurements are particularly well suited to assessments of CBD. LANDFIRE scientists are exploring methods to integrate...
Authors
Birgit E. Peterson, Kurtis Nelson
Undiscovered hydrocarbon resources in the U.S. Gulf Coast Jurassic Norphlet and Smackover Formations Undiscovered hydrocarbon resources in the U.S. Gulf Coast Jurassic Norphlet and Smackover Formations
The U.S. Geological Survey has completed assessments of undiscovered technically recoverable oil and gas resources in the Jurassic Norphlet and Smackover formations of the onshore coastal plain and State waters of the U.S. Gulf Coast. The Norphlet Formation consists of sandstones and interbedded shales and siltstones deposited during a marine transgression. Along its northeast margin...
Authors
Ofori N. Pearson