Simulated effects of climatic change on runoff and drought in the Delaware River Basin
Mark A. Ayers, Gary D. Tasker, David M. Wolock, Gregory J. McCabe, Lauren E. Hay
Singh Udai P.Helweg Otto J., editor(s)
1990, Conference Paper, Supplying Water and Saving the Environment for Six Billion People
Various projection of climatic change were applied to watershed models of the Delaware River basin. Simulations indicate that a warming could reduce annual runoff by as much as 25 percent if current precipitation patterns continue. Simulations indicate that the largest changes in basin drought are in response to relatively small...
Avalon terrane in eastern coastal Maine: Seismic refraction-wide-angle reflection data
J. Luetgert, C.E. Mann
1990, Geology (18) 878-881
A 145-km-long seismic refraction line recorded parallel to the eastern coastline of Maine within the Avalon terrane provides information about the crustal velocity structure within the Avalon block and its relation to other Appalachian terranes. A crustal velocity model for the upper 8...
Is the polar bear (Ursus maritimus) a hibernator? Continued studies on opioids and hibernation
David S. Bruce, Nancy K. Darling, Katheleen J. Seeland, Peter R. Oeltgen, Sita P. Nilekani, Steven C. Amstrup
1990, Pharmacology Biochemistry and Behavior (35) 705-711
Polar bear behavior and biochemistry suggest they may have the ability to hibernate year-round, even though this species is not considered to be a true hibernator. This observation, plus the discovery of a hibernation-induced trigger (HIT) in the blood of black bears, prompted the examination of polar bear blood collected...
Effects of human disturbance on breeding Least and Crested Auklets at St. Lawrence Island, Alaska
John F. Piatt, Bay D. Roberts, Wayne W. Lidster, John L. Wells, Scott A. Hatch
1990, The Auk (107) 342-350
We studied breeding success, chick growth, and diets of Least (Aethia pusilla) and Crested (A. cristatella) auklets on St. Lawrence Island, Alaska, in summer 1987. Least Auklets had higher breeding success on control plots (50-66%) than on disturbed plots (36%). Crested Auklets had a breeding success of 42% on disturbed...
Immediate impact of the 'Exxon Valdez' oil spill on marine birds
John F. Piatt, Calvin J. Lensink, William Butler, Marshal Kendziorek, David R. Nysewander
1990, The Auk (107) 387-397
On 24 March 1989, the oil tanker 'Exxon Valdez' spilled 260,000 barrels of crude oil in Prince William Sound, Alaska. Oil eventually drifted over $30,000\ {\rm km}^{2}$ of coastal and offshore waters occupied by approximately one million marine birds. More than 30,000 dead birds of 90 species were retrieved from...
Conducting field studies for testing pesticide leaching models
Charles N. Smith, Rudolph S. Parrish, David S. Brown
1990, International Journal of Environmental Analytical Chemistry (39) 3-21
A variety of predictive models are being applied to evaluate the transport and transformation of pesticides in the environment. These include well known models such as the Pesticide Root Zone Model (PRZM), the Risk of Unsaturated-Saturated Transport and Transformation Interactions for Chemical Concentrations Model (RUSTIC) and the Groundwater Loading Effects...
Summer-fall survival of American woodcock in Maine
Eric L. Derleth, Greg F. Sepik
1990, Journal of Wildlife Management (54) 97-106
We estimated summer-fall (15 Jun-20 Oct) survival for 32 adult and 96 fledged young American woodcock (Scolopax minor) radiotagged in eastern Maine during 1982-84 using single-interval, multiple-interval, and nonparametric (product-limit) methods. Single-interval survival estimates were 0.90, 0.88, 0.57, and 0.73 for adult males, adult females, young males, and young females,...
1986 Great Lakes Seismic refraction survey (GLIMPCE): Line A - refraction mode
Patrick Morel-a-l’Huissier, John H. Karl, Anne M. Trehu, Zoltan Hajnal, Robert F. Mereu, Robert P. Meyer, John L. Sexton, C. Patrick Ervin, Alan G. Green, Deborah Hutchinson
1990, Geological Survey of Canada Open File 2283
In the fall of 1986, the Geological Survey of Canada (GSC), the United States Geological Survey (USGS), two Canadian universities -- University of Western Ontario and University of Saskatchewan, and four American universities -- Northern Illinois University, Southern Illinois University, University of Wisconsin-Madison and University of Wisconsin-Oshkosh participated in a...
The need for the International Decade of Natural Hazard Reduction
F. Press
1990, Earthquakes & Volcanoes (USGS) (22) 190-192
Natural disasters affect countires large and small, rich or poor, whatever their political persuasion. The toll exacted by natural calamities each year drains the human and economic resources of every nation and stands as one of the formidable barriers to national, regional, and world development. Over the last 20 years, natural...
Small domes on Venus: Probable analogs of Icelandic lava shields
James B. Garvin, Richard S. Williams Jr.
1990, Geophysical Research Letters (17) 1381-1384
On the basis of observed shapes and volumetric estimates, we interpret small, dome-like features on radar images of Venus to be analogs of Icelandic lava-shield volcanoes. Using morphometric data for venusian domes in Aubele and Slyuta (in press), as well as our own measurements of representative dome volumes and areas...
Evaluation of ground-water recharge along the Gila River as a result of the flood of October 1983, in and near the Gila River Indian Reservation, Maricopa and Pinal Counties, Arizona
A.D. Konieczki, S. R. Anderson
1990, Water-Resources Investigations Report 89-4148
Flow in the Gila River from the flood of October 1983 infiltrated the stream channel and recharged the groundwater system along the Gila River floodplain from Ashurst-Hayden Dam to the confluence with the Salt River. Changes in groundwater levels from January 1983 to March 1984 confirmed the occurrence of recharge...
Geophysical constraints on Washington convergent margin structure
Carol A. Finn
1990, Journal of Geophysical Research Solid Earth (95) 19533-19546
Gravity and magnetic maps of western Washington reveal the lateral structure and fabric of the Washington Coast Range, Puget Basin, and southern Washington Cascade Range. The magnetic and gravity maps show large amplitude positive anomalies associated with the shallow but largely buried section of Washington Coast Range mafic rocks which...
Will the 1990’s be a decade of increasingly destructive natural disasters?
P. L. Boulle
1990, Earthquakes & Volcanoes (USGS) (22) 173-175
Today, there is a considerable body of knowledge about natural hazards that laso enables us to devise effective means to limit the damage they cause. Yet, the reality of the situation is that disasters are increasing in number worldwide, and their social and economic impacts are becoming more nad more...
Benthic invertebrate bioassays with toxic sediment and pore water
John P. Giesy, Cornell J. Rosiu, Robert L. Graney, Mary G. Henry
1990, Environmental Toxicology and Chemistry (9) 233-248
The relative sensitivities of bioassays to determine the toxicity of sediments were investigated and three methods of making the sample dilutions required to generate dose-response relationships were compared. The assays studied were: (a) Microtox®, a 15-min assay ofPhotobacterium phosphoreum bioluminescence inhibition by pore water; (b) 48-h Daphnia magnalethality test in pore water;...
Toxicokinetics of PAHs in Hexagenia
Guy R. Stehly, Peter F. Landrum, Mary G. Henry, C. Klemm
1990, Environmental Toxicology and Chemistry (9) 167-174
The accumulation kinetics of two waterborne polycyclic aromatic hydrocarbons (PAHs), benzo[a]pyrene (BAP) and phenanthrene (PHE), were studied in the mayfly nymph (Hexagenia limbata). The uptake clearance decreased while the bioconcentration of BAP increased with an increase in weight of the H. limbata nymph. The relationship between uptake clearance and bioconcentration for PHE was...
Mass-marking of otoliths of lake trout sac fry by temperature manipulation
Roger A. Bergstedt, Randy L. Eshenroder, Charles Bowen, James G. Seelye, Jeffrey C. Locke
1990, American Fisheries Society Symposium (7) 216-223
The otoliths of 676,000 sac fry of lake trout Salvelinus namaycush in 1986, and of 1,100,000 in 1987, were marked by daily manipulation of water temperature. The fish were stocked into Lake Huron in the spring. Otolith marks consisted of groups of daily growth rings accentuated into recognizable patterns by...
Decline of wildcelery buds in the lower Detroit River, 1950-85
Donald W. Schloesser, Bruce A. Manny
1990, Journal of Wildlife Management (54) 72-76
American wildcelery buds (Vallisneria americana), an abundant food eaten by diving ducks (Aythini) during migrations, decreased in the lower Detroit River of the Great Lakes from 1950 to 1985. Bud densities decreased at 2 (-14 and -18 buds/mA?) of 5 locations and were similar at 3 (-2, +2, and +3...
Anchistropus spp. (Crustacea: Cladocera: Chydoridae): a new distribution record for Lake Erie
Marlene S. Evans, Jarl K. Hiltunen, Donald W. Schloesser
1990, Journal of Great Lakes Research (16) 153-157
This note extends the known Great Lakes distribution of Anchistropus sp. from Lake Michigan, Huron, Superior, and St. Clair to Rondeau Harbor in Lake Erie. Anchistropus sp. was collected in benthic samples where it occurred as epibionts on hydra. Previous studies, which are briefly reviewed, have noted the parasitic...
Comparison of ground motion from tremors and explosions in deep gold mines
Art McGarr, J. Bicknell, J. Churcher, S. Spottiswoode
1990, Journal of Geophysical Research Solid Earth (95) 21777-21792
Seismic body waves, from tamped chemical explosions, two with yields of 50 and one of 150 kg, were compared with corresponding data from three mining-induced tremors with a view to testing methods of discriminating between the two types of events. Detonated at depths of about 2 km, all three explosions...
Volcanism in the Sumisu Rift, I. Major element, volatile, and stable isotope geochemistry
A.G. Hochstaedter, J.B. Gill, M. Kusakabe, S. Newman, M. Pringle, B. Taylor, P. Fryer
1990, Earth and Planetary Science Letters (100) 179-194
A bimodal volcanic suite with KAr ages of 0.05–1.40 Ma was collected from the Sumisu Rift using alvin. These rocks are contemporaneous with island arc tholeiite lavas of the Izu-Ogasawara arc 20 km to the east, and provide a present day example of volcanism associated with...
Evolution of the Tertiary La Honda basin, central California
Richard G. Stanley
1990, Conference Paper, Geology and tectonics of the central California coastal region, San Francisco to Monterey: Camarillo, Calif., American Association of Petroleum Geologists, Pacific Section Guidebook
Tertiary strata of the La Honda basin are exposed in the Santa Cruz Mountains along the central California coast south of San Francisco. The basin fill has a composite thickness of more than 14,500 m and consists of sedimentary and volcanic rocks that in places rest on granitic basement...
A method of prioritizing small islands and shoals for conservation based on biological and aesthetic criteria
M. G. Knutson
1990, Thesis
Abstract not submitted to date...
The feeding ecology of the slider turtle
R.R. Parmenter, H.W. Avery
J.W. Gibbons, editor(s)
1990, Life history and ecology of the slider turtle. 257-265
No abstract available at this time...
Reintroduction of sea otters (Enhydra lutris) to San Nicolas Island, California: Preliminary results for the first year. Occasional papers, vol 3
G. B. Rathbun, R.J. Jameson, G.R. VanBlaricom, R.L. Brownell
P.J. Bryant, J. Remington, editor(s)
1990, Endangered Wildlife and Habitats in Southern California. (3) 99-114
No abstract available at this time...
Photosynthesis in vernal pool macrophytes: relation of structure and function
Jon E. Keeley
D.H. Ikeda, R.A. Schlising, editor(s)
1990, Book chapter, Vernal pool plants, their habitat and biology.
No abstract available at this time...
