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Articles 16981 - 17010 of 17788
Full-Text Articles in Entire DC Network
Effects Of Rodents On Germination Of Desert Annuals, O. J. Reichman
Effects Of Rodents On Germination Of Desert Annuals, O. J. Reichman
Memorandum
No abstract provided.
Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson
Rodent Seed-Foraging Strategies And Competition With Ants In The Sonoran Desert, J. H. Brown, D. W. Davidson
Memorandum
No abstract provided.
Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, J. E. Kinnear, T. L. Ackerman, H. O. Hill
Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, J. E. Kinnear, T. L. Ackerman, H. O. Hill
Memorandum
No abstract provided.
Primary Production And Carbon Allocation In Creosotebush: Validation Of The Model, G. L. Cunningham, J. F. Reynolds
Primary Production And Carbon Allocation In Creosotebush: Validation Of The Model, G. L. Cunningham, J. F. Reynolds
Memorandum
No abstract provided.
Jornada Validation Site Report, W. G. Whitford
Tucson Basin Validation Site Report, J. L. Thames
Rock Valley Validation Site Report, F. B. Turner
Impact Of Grazing On Foothill Vegetation, K. C. Hodgkinson, P. S. Johnson
Impact Of Grazing On Foothill Vegetation, K. C. Hodgkinson, P. S. Johnson
Memorandum
No abstract provided.
User's Manual For Desert2: A Desert Ecosystem Simulator Written In Ansi Fortran Iv, W. D. Valentine
User's Manual For Desert2: A Desert Ecosystem Simulator Written In Ansi Fortran Iv, W. D. Valentine
Memorandum
No abstract provided.
Phosphorus Sources Trials, J W. Bowden, M Baker
Phosphorus Sources Trials, J W. Bowden, M Baker
Experimental Summaries - Plant Research
Pasture Trials 76BU1 New land pasture at Yallingupo Sand over laterite. 75N07B New land pasture at Chittering. Grave lo 76MT10 New land pasture at Mount Barker. Gravel. 77MT1 New land pasture at Mount Barkero Methods and particle size. Cropping Trials 76N4 New land - Phosphorus sources on barley - gravel sitee 76LG6 Short history - Phosphorus sources on barley - gravelly sande 76WH9 New land Phosphorus sources on wheat - loamy sands 77M016 - New land - Phosphorus sources on wheat - gravel ~ 3rd crop.
Wheat Potential Yield Trials - 79ka17 D. Hall, Beaufort River - 79wh32 Wongan Hills Research Station, R N. Weir, D Tennant, A. G. P. Brown, M. W. Perry
Wheat Potential Yield Trials - 79ka17 D. Hall, Beaufort River - 79wh32 Wongan Hills Research Station, R N. Weir, D Tennant, A. G. P. Brown, M. W. Perry
Experimental Summaries - Plant Research
COMMENTS 1. No insect problems experienced and broadleaf weeds effectively controlled by spraying. Septoria· leaf spot incidence insufficient to affect yields. 2. Little effect of time of planting on either total dry matter or grain yield. Crop received about 70% of the average May-October rainfall with a very dry September-October. Perhaps the distribution of rainfall allowed a similar pattern of water use, and total water use by each planting time. 3. There is probably a significant effect of Nitrogen regime on grain yield. Osmocote (N3) consistently yielded more than either single (N1) or repeated (N2) dressings of Agran 34:0. The …
Alkalinity And Ph In The Southern Chesapeake Bay And The James River Estuary, George T. F. Wong
Alkalinity And Ph In The Southern Chesapeake Bay And The James River Estuary, George T. F. Wong
OES Faculty Publications
The ranges of alkalinity and pH in the southern Chesapeake Bay and the James River estuary were 2.25 meq·liter−1 at 32‰ to
Petroleum Potential Of The Tilston Interval (Mississippian) Of Central North Dakota, John P. Himebaugh
Petroleum Potential Of The Tilston Interval (Mississippian) Of Central North Dakota, John P. Himebaugh
Theses and Dissertations
The Tilston interval sediments were deposited on the eastern flank of the Williston basin of North Dakota, Manitoba and Saskatchewan. The interval (Osagian) is composed of a basal carbonate and upper anhy drite in the predominantly carbonate Mississippian Madison Formation. The interval consists of four major facies (subtidal, shoal, tidal flat and supratidal anhydrite), and two geographically restricted facies (lagoonal and elastic) and represents a regressive sequence.
Tilston deposition began with the subtidal facies, deposited on a broad, shallow shelf. As the sea regressed this was followed by deposition of the shoal facies. Further regression resulted in the deposition of …
Depositional Environments And Diagenesis Of The Mississippian Bottineau Interval (Lodgepole) In North Dakota, Thomas J. Heck
Depositional Environments And Diagenesis Of The Mississippian Bottineau Interval (Lodgepole) In North Dakota, Thomas J. Heck
Theses and Dissertations
Bottineau interval rocks from the North Dakota part of the Williston Basin comprise a single marine transgression/regression cycle, Early Mississippian (lower Scallion subinterval) marine transgression from the restricted depositional environment of the Bakken Formation resulted in normal marine circulation, Six major facies were developed: (1) the central basin, (2) basin flank, (3) open shelf, (4) crinoidal mudstone, (5) gray shale, and (6) restricted shelf. Marine transgression continued until upper Scallion subinter val time, by which time the open shelf facies had already prograded over the gray shale and crinoidal mudstone facies.
Marine regression had begun by middle Bottineau interval (Virden …
Investigations Of Ryegrass Toxicity, B A. Stynes
Investigations Of Ryegrass Toxicity, B A. Stynes
Experimental Summaries - Plant Research
Development of toxicity in the field. Experiment – 79KA13. Location – C. Butterworth, Katanning. The effect of herbicides and growth regulants on gall development. Experiment – 79KA14. Location - C. Butterworth, Katanning. Effect of burning on the production of galls. Experiment – 79KA9. Location - L. Blight, Gnowangerup; K. Butterworth, Katanning; C. Hanna, Katanning; J. Shepherdson, Gnowangerup. Table 1 Previous land use and characteristics of fires at four farms where fields were burnt in autumn to reduce the level of toxicity of ryegrass in the subsequent spring pasture. Table 2 The numbers and relative proportions of galls retained in the …
Distribution Of Phytoplankton In Nebraska Lakes, F. A. Morris, M. M. Morris, W. D. Taylor, L. R. Williams, S. C. Hern, V. W. Lambou
Distribution Of Phytoplankton In Nebraska Lakes, F. A. Morris, M. M. Morris, W. D. Taylor, L. R. Williams, S. C. Hern, V. W. Lambou
United States Environmental Protection Agency: Publications
The National Eutrophication Survey was initiated in 1972 in response to an Administration commitment to investigate the nationwide threat of accelerated eutrophication to freshwater lakes and reservoirs. The Survey was designed to develop, in conjunction with State environmental agencies, information on nutrient sources, concentrations, and impact on selected freshwater lakes as a basis for formulating comprehensive and coordinated national, regional, and State management practices relating to point source discharge reduction and nonpoint source pollution abatement in lake watershed.
The Survey collected physical, chemical, and biological data from 815 lakes and reservoirs throughout the contiguous United States. To date, the Survey …
Geology Newsletter- 1978, Department Of Geology
Geology Newsletter- 1978, Department Of Geology
Geological and Environmental Sciences News
Vol. 1, No . 4
- Dear Alumni and Friends
- Here and There This and That
- Faculty News
- Graduate Students 1977-78
- Former Faculty
- Colorado River Trip Alumni
- Geology Development Fund
The Dietary Effects Of Rana Catesbeiana Larvae On Micropterus Salmoides, Eric Jon Evenson
The Dietary Effects Of Rana Catesbeiana Larvae On Micropterus Salmoides, Eric Jon Evenson
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Paleoecology Of The Spiriferid Brachiopods Of The Silica Shale Formation (Middle Devonian), S.E. Michigan And N.W. Ohio, Darioush T. Ghahremani
Paleoecology Of The Spiriferid Brachiopods Of The Silica Shale Formation (Middle Devonian), S.E. Michigan And N.W. Ohio, Darioush T. Ghahremani
Masters Theses
Spiriferid brachiopods of the Middle Devonian Silica Formation in northwestern Ohio and southeastern Michigan show many Features that are useful For paleoecologic interpretation. This study is undertaken to examine and interpret the paleoecology and paleobiology of six spiriferid brachiopods Mucrospirifer prolificus, Mucrospirifer grabaui, Mucrospirifer profundus, Mucrospirifer mucronatus, Paraspirifer bownockeri and Spinocyrtia euryteines. All are very abundant and can be easily collected from quarries in the Silica Formation near Sylvania, Ohio.
Fourteen different morphologic characteristics have been tabulated for all specimens used in this study. These characteristics allow interpretations of the ontogenetic de velopment and ecologic relationships of the six studied …
Ua77/1 Western Alumnus, Vol. 49, No. 4, Wku Alumni Association
Ua77/1 Western Alumnus, Vol. 49, No. 4, Wku Alumni Association
WKU Administration Documents
Alumni magazine published by WKU. This issue has the following articles:
- Kerrick, Sara-Lois. Western's First Lady – Harriet Downing
- Bennett, Jo. Oral History, History on Tape
- Snodgrass, Jim. A Freshman Dabbles with Ethylene Gas and Has a Surprising Result – Steve Estok
- Bennett, Jo. Mark Twain Slept Here – Gene Rich
- Given, Ed. It's a Long Time to December – Gene Keady
- Gross, Jan. Shakertown, More Than a Memory
- Conway, Sheila. WKU Fine Arts Festival
- Armstrong, Don. Free Enterprise and Free People
- Highland, Jim. Joseph Cangemi in Venezuela, Latin American Connection
- Jack Corn Photographer
- Julian Carroll Addresses Graduates
- Regents Appoint …
The Distribution Of Several Metals And Cation Exchange Capacity In Sediment Fractions From An Artificial And Natural Marsh, James River, Virginia, William Nivens
OES Theses and Dissertations
In order to examine the mechanisms by which Fe, Mn, Ca, Zn, Cu, Ni and Pb are bound in sediments, a sequential selective extraction procedure was employed on sediment samples collected at an experimental dredge disposal marsh and a neighboring natural marsh located near Windmill Point, James River, Va. The metal concentrations were determined in six phases, interstitial water, exchangeable, easily reducible (oxides of Mn), organic, moderately, reducible (oxides of Fe), and residual fractions. In addition, the cation exchange capacity (CEC) of the sediments was determined as well as the actual role of organics and colloidal iron coatings as they …
Organochlorine Pesticide Residue, Physico-Chemical, And Bacteriological Profile Of The Lower Rio Grande River Of Texas, Juan H. Gonzalez
Organochlorine Pesticide Residue, Physico-Chemical, And Bacteriological Profile Of The Lower Rio Grande River Of Texas, Juan H. Gonzalez
Theses and Dissertations - UTB/UTPA
An investigation was conducted to determine if the widespread and abundant use of organochlorine pesticides in the Lower Rio Grande Valley of Texas has had any effect on the microbial flora in the water and in the bottom sediments of the Lower Rio Grande River of Texas.
Rio Grande River water and bottom sediments were cultured for microbial flora, were analyzed for pesticide residues, and the physicochemical properties of the water were determined. Samples were taken at four different sites during a ten month sampling period in 1974.
Traces of organochlorine residues were found in the water, and higher concentrations …
Shallow Water High-Magnesium Calcite Mud Production And Dispersal, St. Croix, U.S. Virgin Islands, Jonathan A. Fuller
Shallow Water High-Magnesium Calcite Mud Production And Dispersal, St. Croix, U.S. Virgin Islands, Jonathan A. Fuller
Masters Theses
Boiler Bay, on the northeast coast of St. Croix, is 200 m wide, 800 m long, and about 3-5 m. deep. The hay is separated from the open Caribbean by a barrier reef. Winds from the east drive currents westward across a narrow carbonate platform (where they entrain platform-derived carbonate mud) and into the east end of the bay. Longshore currents continue westward through the bay, and the entrained platform- derived suspended load is combined with bay-produced carbonate mud and swept northwestward off the platform after passing through a 6 km complex of bays along the northeastern shore. The suspended …
Geological And Botanical Features Of Sand Beach Systems In Maine And Their Relevance To The Critical Areas Program Of The State Planning Office, Bruce W. Nelson, L. Kenneth Fink Jr.
Geological And Botanical Features Of Sand Beach Systems In Maine And Their Relevance To The Critical Areas Program Of The State Planning Office, Bruce W. Nelson, L. Kenneth Fink Jr.
Maine Collection
Geological and Botanical Features of Sand Beach Systems in Maine and Their Relevance to the Critical Areas Program of the State Planning Office
by Bruce W. Nelson and L. Kenneth Fink, Jr.
"A Report Prepared for the Maine Critical Areas Program, State Planning Office, Augusta, Maine 04330 - Planning Report Number 54 (14 March 1978)."
Contents: Abstract / Foreword / Acknowledgements / Geology, Distribution, and Geomorphology of Maine's Coastal Sandy Beaches and Dune Systems / Methods of Locating Sandy Beaches and Dunes / General Consideration in Developing Criteria for Inclusion in the List of Significant Coastal Sandy Beaches and Dunes …
Soil And Plant Analysis : A Guide To Fertilizer Usage, Walter Jacob Cox
Soil And Plant Analysis : A Guide To Fertilizer Usage, Walter Jacob Cox
Journal of the Department of Agriculture, Western Australia, Series 4
Soil and plant analysis can be used to identify problems in soils, diagnose nutrient deficiencies and as a guide to fertiliser usage.
Soil testing is particularily useful where large amounts of phosphorus and potassium are leached or removed from the paddock in hay or silage.
Actual rates of fertiliser can only be recommended from soil testing and only in conjunction with additional biological and economic information.
Effect Of Growing Season On Sprouting Of Blue Huckleberry, United States Department Of Agriculture, Forest Service
Effect Of Growing Season On Sprouting Of Blue Huckleberry, United States Department Of Agriculture, Forest Service
Forestry
Vaccinium globulare, blue huckleberry, was clipped on five dates from May 19 to August 4. All clipping treatments caused more lateral bud release than occurred in control plants. May, June, and early July treatments caused the same amount of dormant bud release. The amount of shoot growth from released buds corresponded to the amount of growing season remaining after treatment. Irregularity between plants in shoot development after the July 8 treatment and the lack of bud development after the August 4 treatment are attributed to the onset of seasonal bud dormancy.
Terpenes For Indirect Selection Of Growth Potential In Rocky Mountain Douglas-Fir, United States Department Of Agriculture, Forest Service
Terpenes For Indirect Selection Of Growth Potential In Rocky Mountain Douglas-Fir, United States Department Of Agriculture, Forest Service
Forestry
Possibilities of using terpene composition for indirect selection of growth potential were explored for Rocky Mountain Douglas-fir. Volatile leaf oil analyses were made on 170 5-year-old seedlings that represented full-sib hybrid families, wind-pollinated parental lines of inland origin, and wind-pollinated parental lines of coastal origin. Correlation analyses showed that terpenes could not be used efficiently for indirect selection of growth potential in the inland variety. But, terpenes may be useful in selecting parental lines in programs of intervarietal hybridization.
An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume I - Introduction, Summary And Conclusions, And Recommendations, Arkansas Water Resources Research Center
An Evaluation Of The Effects Of Dredging Within The Arkansas River Navigation System - Volume I - Introduction, Summary And Conclusions, And Recommendations, Arkansas Water Resources Research Center
Arkansas Water Resources Center Technical Reports
The foundation for the development of the Arkansas River was laid with the authorization of many upstream reservoirs in the comprehensive River and Harbor Act of 1946 signed by President Truman. Subsequent authorizations were forthcoming and work began on many of the bank stabilization facilities in 1950 and on the major structures in 1957. The current McClellan-Kerr Arkansas River Navigation System was substantially completed in 1972. The authorized multiple-purpose plan for the Arkansas River and tributaries provided for the construction of coordinated developments in the interests of navigation, hydroelectric power, flood control, bank stabilization, and related benefits including recreation and …
The Application Of Ecosym Vegetation Classification To Rangelands Near Price, Utah, Don Shute, Neil E. West
The Application Of Ecosym Vegetation Classification To Rangelands Near Price, Utah, Don Shute, Neil E. West
Memorandum
No abstract provided.
Desert Biome Aquatic Program: A Literature Search For Biological And Physical Parameters For Use In Estimation Of Zooplankton Production, J. Anne Holman
Desert Biome Aquatic Program: A Literature Search For Biological And Physical Parameters For Use In Estimation Of Zooplankton Production, J. Anne Holman
Memorandum
No abstract provided.