Habitat Suitability Index Models: Spotted owl
Stephen A. Laymon, Hal Salwasser, Reginald H. Barrett
1985, FWS/OBS 82/10.113
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the spotted owl (Strix occidentalis). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
Habitat Suitability Index Models: White ibis
Terrence M. Hingtgen, Rosemarie Mulholland, Robert W. Repenning
1985, FWS/OBS 82/10.93
White ibises (Eudocimus albus) are members of the family Threskiornithidae in the order Ciconiiformes. They are medium-sized wading birds with a tapering decurved bill. Adults are white with black tips on the four largest primaries. Males tend to be 35% larger than females, averaging 1,036 ± 30 g (33 ±...
Habitat Suitability Index Models: Least tern
Raymond G. Carreker
1985, FWS/OBS 82/10.103
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the least tern (Sterna antillarum). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
Habitat Suitability Index Models: Lesser scaup (wintering)
Rosemarie Mulholland
1985, FWS/OBS 82/10.91
A review and synthesis of existing information were used to develop a model for evaluating wintering habitat quality for the lesser scaup (Aythya affinis). The model is scaled to produce an index of habitat suitability between 0.0 (unsuitable habitat) to 1.0 (optimal habitat) for Southern Atlantic and Gulf of Mexico...
Habitat Suitability Index Models: Red-spotted newt
Patrick J. Sousa
1985, FWS/OBS 82/10.111
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the red-spotted newt (Notophthalmus viridescens viridescens). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0...
Habitat Suitability Index Models: Great blue heron
Henry L. Short, Robert J. Cooper
1985, FWS/OBS 82/10.99
The great blue heron is the largest, most widely distributed, and best known of the American herons (Henny 1972). Great blue herons occur in a variety of habitats from freshwater lakes and rivers to brackish marshes, lagoons, mangrove areas, and coastal wetlands (Spendelow and Patton in prep.)....
Habitat Suitability Index Models: Greater prairie-chicken (multiple levels of resolution)
Bart L. Prose
1985, FWS/OBS 82/10.102
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the greater prairie-chicken (Tympanuchus cupido pinnatus). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0...
Habitat Suitability Index Models: Laughing gull
Alexander V. Zale, Rosemarie Mulholland
1985, FWS/OBS 82/10.94
A review and synthesis of existing information were used to develop a habitat model for laughing gull (Larus atricilla). The model is scaled to produce an index of habitat suitability between 0 (unsuitable habitat) and 1.0 (optimally suitable habitat) for areas along the Gulf of Mexico coast. Habitat suitability indices...
Habitat Suitability Index Models and Instream Flow Suitability Curves: Gizzard shad
Kathryn L. Williamson, Patrick C. Nelson
1985, FWS/OBS 82/10.112
A review and synthesis of existing information were used to develop habitat suitability index models and instream flow suitability curves for the gizzard shad (Dorosoma cepedianum). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat)...
Habitat Suitability Index Models: Southern and gulf flounders
Kevin M. Enge, Rosemarie Mulholland
1985, FWS/OBS 82/10.92
Both the southern and gulf flounders (paralichthrS lethostigma, f. albi~utta) are important commercial and recreationa species. Catch statlstics for flounder do not differentiate between species; however, southern flounders are more common than gulf flounders except on the gulf coast of Florida (Topp and Hoff 1972). The commercial fishery consists of...
Habitat Suitability Index Models: Gadwall (breeding)
Patrick J. Sousa
1985, FWS/OBS 82/10.100
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the gadwall (Anas strepera). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum habitat)....
Habitat Suitability Index Models: Lesser snow goose (wintering)
John C. Leslie, Phillip J. Zwank
1985, FWS/OBS 82/10.97
The lesser snow goose may have the largest population of any goose in the world (Cooch 1958; Kerbes 1975; Ogilvie 1978). Its arctic breeding range has greatly expanded since the mid-1950's (Bellrose 1976). In the United States, it normally ranks behind only the Canada goose (Branta canadensis) in population size...
Habitat Suitability Index Models: Ruffed grouse
Brian S. Cade, Patrick J. Sousa
1985, FWS/OBS 82/10.86
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the ruffed grouse (Bonasa umbellus). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
A kinematic model for the structure of lee-side (dune-like) deposits
Ralph E. Hunter
1985, Sedimentology (32) 409-422
A kinematic model for the structure of the lee-side deposit of a dune-like bedform, Gilbert-type delta, or similar step is developed, based on the assumptions that initial deposition is entirely by grainfall, that the rate of deposition decreases as a power function of distance downflow from the brink of the...
Rock mechanics observations pertinent to the rheology of the continental lithosphere and the localization of strain along shear zones
Stephen H. Kirby
1985, Tectonophysics (119) 1-27
Emphasized in this paper are the deformation processes and rheologies of rocks at high temperatures and high effective pressures, conditions that are presumably appropriate to the lower crust and upper mantle in continental collision zones. Much recent progress has been made in understanding the flexure of the oceanic lithosphere using...
Accretion tectonics and crustal structure in Alaska
P.J. Coney, D. L. Jones
1985, Tectonophysics (119) 265-283
The entire width of the North American Cordillera in Alaska is made up of "suspect terranes". Pre-Late Cretaceous paleogeography is poorly constrained and the ultimate origins of the many fragments which make up the state are unclear. The Prince William and Chugach terranes accreted since Late Cretaceous time and represent...
Structure, porosity and stress regime of the upper oceanic crust: Sonic and ultrasonic logging of DSDP Hole 504B
Robin Newmark, Roger N. Anderson, Daniel Moos, Mark D. Zoback
1985, Tectonophysics (118) 1-42
The layered structure of the oceanic crust is characterized by changes in geophysical gradients rather than by abrupt layer boundaries. Correlation of geophysical logs and cores recovered from DSDP Hole 504B provides some insight into the physical properties which control these gradient changes. Borehole televiewer logging in Hole 504B provides...
Characterization of the Sukinda and Nausahi ultramafic complexes, Orissa, India by platinum-group element geochemistry
N.J. Page, P.K. Banerji, J. Haffty
1985, Precambrian Research (30) 27-41
Samples of 20 chromitite, 14 ultramafic and mafic rock, and 9 laterite and soil samples from the Precambrian Sukinda and Nausahi ultramafic complexes, Orissa, India were analyzed for platinum-group elements (PGE). The maximum concentrations are: palladium, 13 parts per billion (ppb); platinum, 120 ppb; rhodium, 21 ppb; iridium, 210 ppb;...
Crystalline gold in soil and the problem of supergene nugget formation: Freezing and exclusion as genetic mechanisms
J.R. Watterson
1985, Precambrian Research (30) 321-335
Many of the world's richest gold placer deposits now occur in cold regions despite differences in their climatic history. It therefore seems possible that there may be some fundamental connection between freezing climates and the local chemical behavior of gold in the weathering cycle. This hypothesis, along with the problematical...
Experimental studies in natural groundwater-recharge dynamics: The analysis of observed recharge events
M. Sophocleous, C. A. Perry
1985, Journal of Hydrology (81) 297-332
The amounts and time distribution of groundwater recharge from precipitation over an approximately 19-month period were investigated at two instrumented sites in south-central Kansas. Precipitation and evapotranspiration sequences, soil-moisture profiles and storage changes, water fluxes in the unsaturated zone and hydraulic gradients in the saturated zone at various depths, soil...
Hydraulic gradient control for groundwater contaminant removal
Atwood D. Fisher, S.M. Gorelick
1985, Journal of Hydrology (76) 85-106
The Rocky Mountain Arsenal near Denver, Colorado, U.S.A., is used as a realistic setting for a hypothetical test of a procedure that plans the hydraulic stabilization and removal of a groundwater contaminant plume. A two-stage planning procedure successfully selects the best wells and their optimal pumping/recharge schedules to contain the...
Evaluating the hydraulic effects of changes in aquifer elevation using curvilinear coordinates
E. Weiss
1985, Journal of Hydrology (81) 253-275
The groundwater flow equation is written in curvilinear coordinates whose coordinate surfaces coincide with the top and bottom surfaces of folded layers of aquifers. The coordinates are general enough for these surfaces to coincide for almost all groundwater systems. The terms of the finite-difference approximation for the flow equation can...
Quantitative analysis of saltwater-freshwater relationships in groundwater systems-A historical perspective
T. E. Reilly, A.S. Goodman
1985, Journal of Hydrology (80) 125-160
Although much progress has been made toward the mathematical description of saltwater-freshwater relationships in groundwater systems since the late 19th century, the advective and dispersive mechanisms involved are still incompletely understood. This article documents the major historical advances in this subject and summarizes the major direction of current studies. From...
Analysis and modeling of Palmer's drought index series-Comment
W.M. Alley
1985, Journal of Hydrology (80) 179-185
No abstract available. ...
Salt-water-freshwater transient upconing - An implicit boundary-element solution
M. Kemblowski
1985, Journal of Hydrology (78) 35-47
The boundary-element method is used to solve the set of partial differential equations describing the flow of salt water and fresh water separated by a sharp interface in the vertical plane. In order to improve the accuracy and stability of the numerical solution, a new implicit scheme was developed for...
