Conference Papers
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The status of sea ducks in the North Pacific Rim: Toward their conservation and management The status of sea ducks in the North Pacific Rim: Toward their conservation and management
Sea ducks (tribe Mergini after Johnsgard 1960) are the most northerly distributed ducks, and species diversity is greatest in the North Pacific. They exploit a diversity of inshore and offshore marine habitats during the non-breeding season, and their use of habitat during breeding varies from coastal through freshwater wetlands of the tundra and taiga (Figure 1, Appendix 1). Non...
Authors
R. Ian Goudie, Solange Brault, Bruce Conant, Alexander V. Kondratyev, Margaret R. Petersen, Kees Vermeer
Ultraviolet-B radiation and the immune response of rainbow trout: Chapter 18 Ultraviolet-B radiation and the immune response of rainbow trout: Chapter 18
As part of a larger study on global climate change and ozone depletion we are investigating the effects of ultraviolet-B (UVB) radiation on fishes. We conducted a number of experiments to explore the possible effects of UVB radiation on the immune response of juvenile rainbow trout Oncorhynchus mykiss. In one study, the fish developed sunburn and fungal infection on the dorsal skin after...
Authors
David L. Fabacher, Edward E. Little, S.B. Jones, E.C. DeFabo, L.J. Webber
Volume-controlled hydrologic property measurements in triaxial systems Volume-controlled hydrologic property measurements in triaxial systems
New capabilities for hydrologic property measurements in triaxial systems include: (1) volume-controlled and simultaneous measurements of hydraulic conductivity and one-dimensional consolidation (or specific storage) of a saturated test specimen; and (2) volume-controlled measurements of hydraulic conductivity, matric potential, and the variation of these properties with the moisture...
Authors
Harold W. Olsen, Arthur T. Willden, Nicholas J. Kiusalaas, Karl R. Nelson, Eileen P. Poeter
Width adjustment: relative dominance in unstable alluvial streams Width adjustment: relative dominance in unstable alluvial streams
The mechanisms that control the relative dominance of width adjustment in unstable streams are described. Specifically, the role of the following factors affecting the fluvial environment were investigated: vertical processes and fluvial action, bed-material particle, cohesive strength of bank material, and riparian vegetation.
Authors
Andrew Simon
Production and decomposition of Spartina patens in a degrading coastal marsh Production and decomposition of Spartina patens in a degrading coastal marsh
Production and decomposition rates were calculated for Spartina patens in a mesohaline coastal marsh in Louisiana. Production was estimated to be 800 g m2 yr-1 during 1991 and 1,696 g m-1 yr-1 during 1992. The relative decomposition rate of S. patens stems was -0.001152 g g-1 d-1 which may be restated as a half life of 395 days. Both production and decomposition rates for this area are...
Authors
Lori A. Johnson, Kathleen A. Reynolds, A. Lee Foote
Use of surface-geophysical and borehole-radar methods to detect fractures in crystalline rocks, Mirror Lake area, Grafton County, New Hampshire Use of surface-geophysical and borehole-radar methods to detect fractures in crystalline rocks, Mirror Lake area, Grafton County, New Hampshire
No abstract available.
Authors
F.P. Haeni, John W. Lane, D.A. Lieblich
Global climate change: Implications for submerged aquatic vegetation Global climate change: Implications for submerged aquatic vegetation
No abstract available.
Authors
William M. Rizzo, Hilary A. Neckles
Spectral reflectance and canopy structure characteristics of gulf coast wetland vegetation types Spectral reflectance and canopy structure characteristics of gulf coast wetland vegetation types
Field measurements of canopy structure and species composition are related to spectral reflectance measurements taken with a radiometer over a number of marsh sites. Marsh vegetation types are discussed in terms of their characteristic canopy structure and phenology; the influence of these characteristics on spectral reflectance will be examined. Vegetation types that are discussed...
Authors
R. Spell, Elijah W. Ramsey III
U-Pb provenance ages of shocked zircons from the K-T boundary, Raton Basin, Colorado U-Pb provenance ages of shocked zircons from the K-T boundary, Raton Basin, Colorado
No abstract available.
Authors
Wayne R. Premo, G. A. Izett
Marsh submergence vs. marsh accretion: Interpreting accretion deficit data in coastal Louisiana Marsh submergence vs. marsh accretion: Interpreting accretion deficit data in coastal Louisiana
The apparent imbalance between relative sea-level rise and vertical marsh accretion is frequently cited as a major factor in the problem of wetland loss in Louisiana. Rates of relative sea-level rise are high in Louisiana due to high rates of subsidence. Although marsh accretion rates are also high, they are usually insufficient to maintain the relative elevation of the marsh surface...
Authors
Denise J. Reed, Donald R. Cahoon