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Page 3179, results 79451 - 79475

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Contrasting patterns of habitat use by prawns and crayfish in a headwater marsh of the St. Johns River, Florida
Frank Jordan, Kimberly J. Babbitt, Carole C. McIvor, Steven J. Miller
2000, Journal of Crustacean Biology (20) 769-776
We compared seasonal patterns of habitat use by the prawn Palaemonetes paludosus and the crayfish Procambarus alleni in Blue Cypress Marsh Conservation Area, Florida. Prawn densities were similar to those found in other oligotrophic wetlands of southern Florida, whereas crayfish densities were much greater than reported previously for other wetlands...
Evaluation of remote-sensing techniques to measure decadal-scale changes of Hofsjokull ice cap, Iceland
D.K. Hall, R.S. Williams Jr., J.S. Barton, O. Sigurdsson, L.C. Smith, J.B. Garvin
2000, Journal of Glaciology (46) 375-388
Dynamic surficial changes and changes in the position of the firn line and the areal extent of Hofsjökull ice cap, Iceland, were studied through analysis of a time series (1973–98) of synthetic-aperture radar (SAR) and Landsat data. A digital elevation model of Hofsjökull, which was constructed using SAR interferometry, was...
Last interglacial reef growth beneath Belize barrier and isolated platform reefs
Eberhard Gischler, Anthony J. Lomando, J. Harold Hudson, Charles W. Holmes
2000, Geology (28) 387-390
We report the first radiometric dates (thermal-ionization mass spectrometry) from late Pleistocene reef deposits from offshore Belize, the location of the largest modern reef complex in the Atlantic Ocean. The results presented here can be used to explain significant differences in bathymetry, sedimentary facies, and reef development of this major...
Portable coastal observatories
Daniel Frye, Bradford Butman, Mark Johnson, Keith von der Heydt, Steven Lerner
2000, Oceanography (13) 24-31
Ocean observational science is in the midst of a paradigm shift from an expeditionary science centered on short research cruises and deployments of internally recording instruments to a sustained observational science where the ocean is monitored on a regular basis, much the way the atmosphere is monitored. While satellite remote...
Holocene and recent sediment accumulation rates in southern Lake Michigan
Steven M. Colman, J.W. King, Glenn A. Jones, R. L. Reynolds, Michael H. Bothner
2000, Quaternary Science Reviews (19) 1563-1580
Rates of sediment accumulation in Lake Michigan are a key component of its geologic history and provide important data related to societal concerns such as shoreline erosion and the fate of anthropogenic pollutants. Previous attempts to reconstruct Holocene rates of sediment accumulation in Lake Michigan, as well as in the...
Local variability but landscape stability in coral reef communities following repeated hurricane impacts
John C. Bythell, Zandy M Hillis-Star, Caroline S. Rogers
2000, Marine Ecology Progress Series (204) 93-100
Coral reef community structure has remained remarkably stable over a 10 yr period within a small protected marine area despite repeated hurricane impacts. Local community dynamics have been highly variable, however. Sites that were destroyed by disease in the 1970s are showing little or no recovery, while sites less than...
Modern pollen deposition in Long Island Sound
Kristina R.M. Beuning, Lindsey Fransen, Berna Nakityo, Ellen L. Mecray, Marilyn R. Buchholtz ten Brink
2000, Journal of Coastal Research (16) 656-662
Palynological analyses of 20 surface sediment samples collected from Long Island Sound show a pollen assemblage dominated by Carya, Betula, Pinus, Quercus, Tsuga, and Ambrosia, as is consistent with the regional vegetation. No trends in relative abundance of these pollen types occur either from west to east or associated with...
Assessment of mineral resource tracts in the Chugach National Forest, Alaska
Steven W. Nelson, Marti L. Miller
2000, Open-File Report 2000-26
Locatable minerals have been produced from the Chugach National Forest (CNF) for nearly 100 years. Past gold production has come from the Kenai Peninsula and the Girdwood, Port Wells, and Valdez areas. Copper and by-product gold and silver have been produced from mines at Ellamar, on Latouche Island, and near...
Grand Portage Reservation Environmental Monitoring Program
Robert M. Goldstein
2000, Open-File Report 2000-69
There are seven types of aquatic resources on the Grand Portage Reservation. An ecological monitoring program was proposed for these resources. Some of the resources are pristine, while others have been affected by development. Each type of resource has physical (habitat, sediment, and hydrology), chemical, and biological (fish, invertebrates, and...
Geologic studies in Alaska by the U.S. Geological Survey, 1998
Karen D. Kelley, Larry P. Gough, editor(s)
2000, Professional Paper 1615
The 14 papers that follows continue the series of U.S. Geological Survey (USGS) reports on investigations in the geologic sciences in Alaska. The series presents new and sometimes preliminary findings that are of interest to earth scientists in academia, government, and industry; to land and resource managers; and to the...
Environmental characteristics and water quality of hydrologic benchmark network stations in the west-central United States, 1963-95
Melanie L. Clark, C. A. Eddy-Miller, M. Alisa Mast
2000, Circular 1173-C
This report describes the environmental characteristics and water-quality characteristics of 14 benchmark basins in the west-central United States. The information was compiled to aide in the interpretation and application of historical water-quality data collected through the Hydrologic Benchmark Network Program....
Geologic map of the Alligator Ridge area, including the Buck Mountain East and Mooney Basin Summit quadrangles and parts of the Sunshine Well NE and Long Valley Slough quadrangles, White Pine County, Nevada
Constance J. Nutt
2000, IMAP 2691
Data set describes the geology of Paleozoic through Quaternary units in the Alligator Ridge area, which hosts disseminated gold deposits. These digital files were used to create the 1:24,000-scale geologic map of the Buck Mountain East and Mooney Basin Summit Quadrangles and parts of the Sunshine Well NE and Long...