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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.

Filter Total Items: 5519

Development of a murre (Uria spp.) egg control material 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...
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 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...
Authors
R. Douglas Hunter, J.F. Savino, L.M. Ogilvie
By
Ecosystems Mission Area, Great Lakes Science Center

Digital floodplain mapping and an analysis of errors involved 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...
Authors
C.S. Hamblen, D.T. Soong, X. Cai

Economic decision making and the application of nonparametric prediction models Economic decision making and the application of nonparametric prediction models

Sustained increases in energy prices have focused attention on gas resources in low permeability shale or in coals that were previously considered economically marginal. Daily well deliverability is often relatively small, although the estimates of the total volumes of recoverable resources in these settings are large. Planning and development decisions for extraction of such resources...
Authors
Emil D. Attanasi, Timothy C. Coburn, Philip A. Freeman
By
Energy Resources Program

Effect of an offshore sinkhole perforation in a coastal confined aquifer on submarine groundwater discharge Effect of an offshore sinkhole perforation in a coastal confined aquifer on submarine groundwater discharge

In order to explore submarine groundwater discharge in the vicinity of karst features that penetrate the confining layer of an offshore, partially confined aquifer, we constructed a three-dimensional groundwater model using the SUTRA (Saturated-Unsaturated TRAnsport) variable-density groundwater flow model. We ran a parameter sensitivity analysis, testing the effects of recharge rates
Authors
S.E. Fratesi, V. Leonard, W. E. Sanford

Effect of tidal fluctuations on contaminant transfer to the ocean Effect of tidal fluctuations on contaminant transfer to the ocean

Variable-density groundwater flow was simulated to examine the effects that tide has on the coastward migration of a contaminant through a freshwater/saltwater interface and toward a coastal ocean boundary. Simulated ocean tides did not significantly affect the total contaminant mass input to the ocean; however, the difference in tidal and non-tidal simulated concentrations could be as...
Authors
I.L. Licata, C.D. Langevin, A.M. Dausman
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