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Articles 1891 - 1910 of 1910
Full-Text Articles in Natural Resources and Conservation
The Prairie Naturalist Volume 3, No.1 March, 1971
The Prairie Naturalist Volume 3, No.1 March, 1971
The Prairie Naturalist
EDITORIAL: One House for Natural Resource Management ▪ Paul B. Kannowski
CHECKLIST OF BIRDS IN NORTH DAKOTA ▪ Robert E. Stewart
ADDITIONAL INFORMATION ON THE WOOD DUCK IN NORTH DAKOTA ▪ Edmund A. Hibbard
NOTES ON DANDELIONS ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1970 ▪ Robert N. Randall
THE EROSION OF ONE OF MAN'S MOST PRECIOUS NATURAL RESOURCES: HIS FREEDOM OF CHOICE ▪ Gordon L. Iseminger
NOTEWORTHY PLANTS OF THE NORTH DAKOTA PRAIRIE COTEAU FOREST ▪ W. Carter Johnson
NOTE — Duck mortality caused by wind ▪ Harold Kantrud
Micronutrients And Biological Patterns In Lake Mead, Hasan K. Qashu, Lorne G. Everett, J. S. Carlson, Bureau Of Reclamation
Micronutrients And Biological Patterns In Lake Mead, Hasan K. Qashu, Lorne G. Everett, J. S. Carlson, Bureau Of Reclamation
Publications (WR)
Progressive increases in concentration of dissolved solids in the Colorado River water from Lake Powell to Imperial Dam seem to alter plankton dynamics and biological productivity of the river. Also, changes in biological productivity and micronutrients concentrations occur within the same reservoir. Development of a digital simulation model to predict micronutrients concentrations and biological productivity is necessary for diagnosing changes in plankton population and effluent-carrying capacity of the system. The objectives of the study are: (1) to determine trace metal balance at different locations in Lake Mead, (2) to measure biological productivity and conduct plankton population counts at each sampling …
The Prairie Naturalist Volume 2, Nos. 3 And 4 September–December, 1970
The Prairie Naturalist Volume 2, Nos. 3 And 4 September–December, 1970
The Prairie Naturalist
EDITORIAL: Ecology and Environmental Education ▪ Keith R. Stamm
PEOPLE IN PERIL ▪ Thomas L. Kimball
MEN IN MAN'S ENVIRONMENT ▪ Robert L. Burgess
ENERGY AND MAN'S ENVIRONMENT ▪ Dale Henegar
MINERALS AND SOILS IN MAN'S ENVIRONMENT ▪ Wilson M. Laird
WATER IN MAN'S ENVIRONMENT ▪ Norman Peterson
THE ATMOSPHERE IN MAN'S ENVIRONMENT ▪ Gene A. Christianson
WHY ENVIRONMENTAL EDUCATION IN THE LIFE SCIENCES? ▪ James R. Reilly
ECOLOGICAL EDUCATION IN THE PHYSICAL SCIENCES ▪ William P. Eastwood
MASS MEDIA AND ENVIRONMENTAL EDUCATION ▪ Richard Palmer
THE JUDGMENT OF THE JACKAL ▪ C. Benson Thomerson
THE ROLE OF COLLEGES AND …
The Prairie Naturalist Volume 2, No.2 June, 1970
The Prairie Naturalist Volume 2, No.2 June, 1970
The Prairie Naturalist
EDITORIAL: Ecocide on the Sheyenne? ▪ Paul B. Kannowski
NEW RECORDS OF VASCULAR PLANTS IN NORTH DAKOTA ▪ Robert E. Stewart
SOME LOCAL NATIVE PLANT LOSSES AND SOME SAL V AGE ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS IN NORTH DAKOTA ▪ Robert N. Randall
ENVIRONMENTAL DESIGN IN COMMUNITY PLANNING ▪ Cameron Man
DISTRIBUTION OF THE SCIRPUS VALIDUS COMPLEX IN NORTH DAKOTA ▪ Richard L. Ward
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist
EDITORIAL: Speaking of Ecologists ▪ Paul B. Kannowski
NEEDED: AN ETHICAL BASIS FOR ENVIRONMENTAL POLICY ▪ Gordon L. Iseminger
THE POPULATION PARADOX ▪ Gary L. Pearson
THE ENVIRONMENTAL CRISIS—A CALL TO ACTION ▪ Glen A. Sherwood
NORTH DAKOTA—1970 ▪ Philip B. Aus
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist
EDITORIAL: Restoring Beauty to the Human Environment ▪ Paul B. Kannowski
A REQUIEM FOR THE PRAIRIE ▪ Hugh H. Iltis
BIRDING IN MY BACK YARD ▪ Mrs. George A. Anderson
OCCURRENCE OF THE CECROPIA AND ROCKY MOUNTAIN SILK MOTHS IN SOUTHWESTERN NORTH DAKOTA ▪ James Oberfoell
Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration
Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration
Publications (WR)
This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.
The Prairie Naturalist Volume 1, No. 3. September, 1969
The Prairie Naturalist Volume 1, No. 3. September, 1969
The Prairie Naturalist
EDITORIAL: A VOICE FOR CONSERVATION ▪ Paul B. Kannowski
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1968 ▪ Robert N. Randall
SOME ENVIRONMENTAL MANAGEMENT PROBLEMS AND PROPOSED SOLUTIONS ▪ Laurence R. Jahn
SOME PLANTS OF WESTERN MINNESOTA ▪ O. A. Stevens
MORTALITY OF MIGRATORY BIRDS AT GRAND FORKS, NORTH DAKOTA FOLLOWING A MOSQUITO CONTROL OPERATION IN MAY, 1969 ▪ Robert W. Seabloom, Lewis W. Oring and James R. Reilly
NESTING OF THE UPLAND PLOVER ON THE MISSOURI COTEAU ▪ K. F. Higgins, H. F. Duebbert and R. B. Oetting
NOTE
Albino sparrows discovered at Hazen, North Dakota ▪ Larry L. Kruckenberg and …
The Prairie Naturalist Volume 1, No. 2. May, 1969
The Prairie Naturalist Volume 1, No. 2. May, 1969
The Prairie Naturalist
EDITORIAL: North Dakota's Naturalist-at-Large ▪ Paul B. Kannowski
WETLAND VEGETATION OF THE TURTLE MOUNTAINS, NORTH DAKOTA ▪ Robert L. Burgess and Dennis T. Disrud
RAPID METHOD OF FILTRATION OF MARSH WATERS ▪ V. A. Adomaitis and J. A. Shoesmith
NOTES
Additional distribution records of the false map turtle and the short-horned lizard in North Dakota ▪ Dennis J. Gemmell
Summer record of the snowy owl in North Dakota ▪ Donald R. Johnson
Long-billed curlews in LaMoure County, North Dakota ▪ Gary L. Krapu
The Prairie Naturalist Volume 1. No.1. March 1968
The Prairie Naturalist Volume 1. No.1. March 1968
The Prairie Naturalist
EDITORIAL: Another Milestone ▪ John T. Lokemoen
NESTING OF THE COMMON SNIPE IN NORTH DAKOTA ▪ Robert E. Stewart and Harold A. Kantrud
SCIENCE WRITING — A PROBLEM ▪ Soren O. Kolstoe
INSECTICIDES: A DOUBLE-EDGED SWORD ▪ Richard D. Urban
NOTES
Why I like the Badlands ▪ Wayne Hecker
White-faced ibis in McIntosh County, North Dakota ▪ Harold F. Duebbert
Cinnamon teal observations in North Dakota ▪ A. T. Klett and John T. Lokemoen
Trumpeter swan in Kidder County, North Dakota ▪ Lewis M. Cowardin and James C. Bartonek
Specimen records of greater scaup ▪ Charles W. Dane and Harold …
Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation
Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation
Publications (WR)
PURPOSE The purpose of the proposed research is to quantify the effects that Lakes Mead and Powell have on the salinity in the Colorado River system, and to evaluate changes that cap be made to the operating system of the reservoirs (within legal/institutional constraints) to enhance salt precipitation and/or minimize evaporation within the reservoirs. The effect of any changes (i.e., selective withdrawal uses, pumped storage, etc.) on reservoir evaporation could also be evaluated with a goal of minimizing evaporation. This will be accomplished through the development of a mathematical model of the reservoirs as described below. BACKGROUND Two major problems …
Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation
Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation
Publications (WR)
The survey results indicate that the impoundment of water behind Hoover Dam has not adversely affected the dissolved oxygen (DO) content and that water quality and DO content were uniform regardless of depth. The study made in April-May 1964 will provide water quality data of Lake Mead prior to releases from Lake Powell as a basis for evaluating Lake Powell's effect on water quality and limnology of Lake Mead. The performance of a DO analyzer was tested and found unsatisfactory at depths below 150 ft. Parameters tested by standard chemical analyses of water samples in the Denver Laboratory and by …
Amphibians And Reptiles Of Vigo County, Indiana, David Rubin
Amphibians And Reptiles Of Vigo County, Indiana, David Rubin
All-Inclusive List of Electronic Theses and Dissertations
Vigo County, Indiana is an extremely interesting area for herpetological studyo Its geographical location allows for the interplay of faunal elements from east, west, north, and south (Smith and minton, 1957) and its physiography permits investigation of the relations of terrain and glacial geology to herpetofaunal distribution. Blatchley (1891, 1899) published two papers on the amphibians and reptiles of the county and Allyn and Shockley (1938) reported on the county's salamandersa The present paper has the following objectives: to determine which species occur or have recently occurred in Vigo County; to determine amphibian and reptile distribution in the county; to …
Available Water Supply Of The Las Vegas Ground-Water Basin Nevada, Glenn Thomas Malmberg
Available Water Supply Of The Las Vegas Ground-Water Basin Nevada, Glenn Thomas Malmberg
Publications (WR)
The Las Vegas ground-water basin as described in this report includes the southern part of Indian Spring Valley, Three Lakes Valley, the northern half of Ivanpah Valley, and Las Vegas Valley. These valleys in part are inferred to form a hydrologic unit that includes an area of about 3,000 square miles in the southern part of Clark County, Nev.
The valleys forming the Las Vegas ground-water basin are broad structural depressions surrounded by mountains. The climate of the region is arid, and precipitation in the basin lowlands rarely exceeds 5 inches per year. Drainage is interior except for occasional Hood …
The Archeology Of The Lime Creek Site In Southwestern Nebraska, E. Mott Davis
The Archeology Of The Lime Creek Site In Southwestern Nebraska, E. Mott Davis
University of Nebraska State Museum: Staff and Affiliates, Publications
The Lime Creek site is a stratified Early Lithic (Paleo-Indian) camp site buried in the Terrace-2A alluvial fill of a valley in the dissected loess plains. Geological correlations indicate an early Valders (Wisconsin- IV) date. A radiocarbon date (No. C-471) of 9524 B.P. from just below Lime Creek I, the lowest occupation zone, must be taken only as a minimal possible age for the site. The animal bones in Lime Creek I are primarily of pronghorn and beaver, whereas those in Lime Creek III, the highest occupation zone, are exclusively of bison. The change in hunting patterns seems due to …
The Gascoyne River Catchment Area, W M. Nunn
The Gascoyne River Catchment Area, W M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 4
A RECENT Department of Agriculture survey of the Gascoyne River catchment area has indicated that deterioration of plant cover in the area contributes to the severity of floods which regularly damage the town of Carnarvon.
It is hoped that the results of the survey will help efforts to regenerate the catchment area, and reduce the risk of flooding.
Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation
Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation
Publications (WR)
During the fall of 1959, monolayer behavior studies were made on two lakes in the southwest; Boulder Basin of Lake Mead, Nevada, and Lake Sahuaro near Phoenix, Arizona. These studies were made to evaluate the effect of geographical and climatological conditions on movement and behavior of monolayers. The Lake Sahuaro tests also were used to provide data for design and development of improved methods of application and maintenance of a film on this lake in anticipation of full scale, evaporation-reduction tests to be performed there during the summer of I960. The Lake Mead studies produced the following general points of …
Progress Report On The Ground-Water Resources Of The Las Vegas Artesian Basin, Nevada, George B. Maxey, C. Harry Jameson
Progress Report On The Ground-Water Resources Of The Las Vegas Artesian Basin, Nevada, George B. Maxey, C. Harry Jameson
Publications (WR)
Whether the tremendously increased population acquired by Las Vegas in the years 1940 to 1942 will be retained cannot at present be foretold. However, the valley will undoubtedly be expected to support a considerably larger population than it did at any time prior to 1940, and continually increasing demands on the water supply for innumerable pcacetimc activities must be anticipated. Therefore, a sound evaluation of tho ground water resources of Las Vegas Valley is directly in line with the other wisely progressive planning programs which are now operating or are taking shape in the valley as well as in the …
Bird Studies Of The Bear River Marshes, Ernest W. Parkinson
Bird Studies Of The Bear River Marshes, Ernest W. Parkinson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The establishment of the Bear River Bay Bird Refuge has created for the state of Utah an immense and valuable biological field, a veritable paradise for naturalist and sportsman alike. The naturalist wants a place to study wild life and the sportsman desires game. With the proper control of open seasons on wild fowl the hunting instinct and incentive for the sport should be satisfied for the sportsman. To the naturalist this region will open up bountiful treasures of knowledge that is to be gained only by intense and prolonged scientific study.