Physical Sciences and Mathematics Commons^™

Recent Sediments Of Humboldt Bay, Eureka, California, Robert Wayne Thompson

Special Collections Archived Publications

Humboldt Bay is a coastal lagoon, 14 mi. long and a maximum of 4 mi. wide. The bay has three distinct segments, South, Entrance, and Arcata Bays, each of which occupies the seaward end of one or more stream valleys cut into Plio- Pleistocene paralic sediments. The segments are linked by narrow tidal channels which are bounded by a barrier spit on the west and by high valley interfluves on the east. Climate of the area is rainy temperate . Tides are of the mixed type with a mean range of 6.5 ft.

Textural variations of the surface sediments in …

A Clinico-Pathologic Study Of Botulism In Ring-Necked Pheasants, Hazel J. Shave

Electronic Theses and Dissertations

Toxins were produced from 6 strains of Cl. Botulinum, 2 of which killed pheasants. Inoculated birds were observed and a description of the progression of signs of the disease is given. Juvenile pheasants were inoculated with Types A and C toxin intramuscularly and were given the toxin orally. These birds were observed and their clinical signs noted. Adult pheasants were inoculated with toxoid prepared from type C toxin and commercial toxoid; injections were repeated in 21 days. Fourteen days following the final injection, the birds were challenged with toxin. Those protected with toxoid survived, while those receiving saline succumbed. Gross …

Movements And Habitat Use By Hen Pheasants During Brood Rearing, Lynn E. Hanson

Electronic Theses and Dissertations

Land-use patterns characteristic of prime pheasant range in the Great Plains and prairie region have 50-75 percent of the land under cultivation according to Kimball et. al. (1956). Farmland is pheasant habitat, and the production of pheasants is therefore greatly influenced by farming practices. Considerable research has been done on rates of pheasant production, nest success, and cover preferences for nesting. However, little information has been obtained on movements and cover preferences for brood rearing. Most studies of the type of cover utilized by pheasant broods have been based on roadside and random field observations. Kozicky and Hendrickson (1951) carried …

Interpretive Potential Of South Dakota Wetlands, Douglas C. Harr

Electronic Theses and Dissertations

A study was initiated to devise a method for selecting prairie wetlands on which nature interpretation areas could be established. An evaluation form was designed to systematically identify areas of good potential and 64 prairie wetlands were evaluated. Twenty-two percent of the evaluated marshes were found to rank “excellent”: the method of evaluation was determined successful. A survey was initiated to determine visitor preferences for interpretive methods and facilities at an existing wildlife-interpretive trail. Seventy-nine percent of the visitors indicated preference for a self-guiding interpretive trail. Maps and pictures used in conjunction with self-guiding signs were deemed important. Ninety-one percent …

Phytoplankton Dynamics Of Two Northern Prairie Lakes And Possible Relations To Dissolved Nutrients, Alan B. Hauber

Electronic Theses and Dissertations

Phytoplankton populations in Enemy Swim Lake were observed to be quite different. Although these lakes lie within the same geographic area (Coteau des Prairies), major differences in water quality were recorded. The differences in water quality were reflected in the phytoplankton populations and appeared to be influenced by the agricultural practices on the watersheds. Enemy Swim Lake was basically a diatom lake while Lake Herman contained mostly blue-green algae. Genera of algae found in Enemy Swim Lake were: Anabaena, Aphanizomenon, Lyngbya, Pediastrum, Staurastrum, Dinobyron, Asterionella, Fragilaria, Melosira, Stephanodiscus, and Ceratium. All of the above genera occurred in Lake Herman except …

Macroscopic Benthos Populations And Taxonomy Of The Family Chironomidae In Lake Poinsett, South Dakota, Stephen B. Smith

Electronic Theses and Dissertations

Benthos samples were collected in Lake Poinsett, a highly eutrophic eastern South Dakota lake, from March 1970 through February 1971. The lake bottom was divided into three substrate types (sand, sand-sapropel mixture and sapropel) and the percent of each substrate type was calculated. Nineteen macroscopic genera were taken from ten sampling stations located throughout the lake. Descriptions are presented for organisms in this group. Diversity of organisms was greatest in the sand substrates, in that all 19 genera were collected. Chironomus spp. (Chironomus plomosus, Chironomus attenuates and six unidentified species) was the most abundant group of organisms and occurred most …

Seasonal Movements And Behavior Of Ring-Necked Pheasants In Eastern South Dakota, Arthur V. Carter

Electronic Theses and Dissertations

Information was gathered on mobility, behavior, and related activities of pheasants from July 1966 to July 1968 by banding and/or marking 160 birds with backtags and radio transmitters. Food was readily available since the winters were mild with little snow. Birds moved less than 1/4 mile from roosting areas to cornfields and weed patches to feed. Numbers of birds dispersing from the study area in spring varied each of the years, but 60 to 70 remained there during the two reproductive seasons. Adult cocks traveled less than 1/4 mile when dispersing-and adult hens moved less than 1/2 mile. Movements by …

Food Habits Of Black Crappies, White Crappies, Yellow Perch And White Suckers In A Small Impoundment In Northeastern South Dakota, Dennis Unkenholz

Electronic Theses and Dissertations

Crustaceans, aquatic insects and fish were the most important food items found in stomach samples. Black crappies depended on zooplankton and aquatic insects as their major food source as they occurred in all samples and were major food items in 70 percent and 40 percent respectively. Insects, zooplankton and fish were the major food items of white crappies. Insects were the dominant forage present in 54 percent of the samples while zooplankton and fish were dominant in 36 percent and 21 percent of the samples respectively. Perch relied on crayfish, fish and aquatic insects as their major food source. Aquatic …

Food Habits Of Deer In The Southern Black Hills As Determined By The Point Technique, Theron E. Schenck

Electronic Theses and Dissertations

White-tailed (Odocoileus virginianus) and mule deer (Odocoileus hemionius) were collected in 1968 and 1969 for a study of food habits. Rumen contents were analyzed by use of the point-analysis technique and weights. This is the first food habits study from the southern Black Hills and is necessary for proper deer management. To evaluate the suitability of the point technique for Black Hills vegetation, an artificial population was constructed from known weights of a forb, (Achillea lanulosa), grass (Oryzopsis asperfoliz), rose (Rosa sp.), kinnikinnick (Arctostaphylos uva-ursi), and ponderosa pine (Pinus ponderosa). Each population was tested with 100-point trails and 200-point trials. …

Effects Of Chick Stimuli And Dieldrin On Adoptive Behavior Of Penned Hen Pheasants, K. L. Cool

Electronic Theses and Dissertations

Studies to determine the effect of chick stimuli and dieldrin on adoptive behavior of penned hen pheasants were conducted in 1969 and 1970. Results indicated that whether caged hens saw or heard chicks had no effect on adoption or killing of chicks. Hens receiving sound stimuli and sight-and-sound stimuli from chicks responded similarly to hens receiving no stimuli. Sub-lethal doses of dieldrin also had no effect on chick adoption under the conditions of this study. Results demonstrated that non-incubating pheasant hens will adopt and brood orphan chicks. During the 2 years of the study, respectively, 37 and 49 percent of …

Effects Of Dieldrin On The Social Interactions Of Penned Pheasants And Chickens, Nancy Hayden Field

Electronic Theses and Dissertations

Studies to determine the effects of dieldrin on social hierarchy of pheasants and chickens were initiated in 1970. Social interactions were observed among groups of pheasant chicks, adult cock and hen pheasants and peck-order development among groups of young pheasants. To determine the effects of dieldrin on the pecking behavior of individual birds, pairs of pheasants and pairs of chickens were placed in a neutral cage. When patterns of dominance and subordination were consistent, dieldrin in capsules (4 mg to pheasants and 6 and 10 mg to chickens twice weekly) was given to one member of each pair and birds …

A Comparison Of Aspen And Pine Communities In The Northern Black Hills, Jeremiah J. Kranz

Electronic Theses and Dissertations

Three study areas, each containing an aspen (Populus tremuloides) community, a pine (Pinus ponderosa) community, and a mixed aspen-pine community, were studied during the summers of 1968, 1969, and 1970. Soil chemistry, plant chemistry, overstory density, understory production, and use by whitetail deer (Odocoileus virginianus) and cattle (Bos taurus) were determined for each community in each study. Pine and aspen communities of one study area were sampled for soil and plant chemistry. Soil phosphate and potassium levels were higher in the aspen community, while soil nitrates were higher in the pine community. Soil pH was similar to the two communities. …

Population Dynamics Of The Mourning Dove In South Dakota, Leslie A. Rice

Electronic Theses and Dissertations

Mourning dove bandings in South Dakota totaled 44,842 from 1917 through 1970. Adult bandings totaled 44.4 percent of all bandings while immatures, juveniles, locals, and unknown age were 41.3, 0.8, 12.8, and 0.7 percent, respectively. Recoveries totaled 2.8 percent of the banded population, 2.5 percent from hunting and 0.5 percent from non-hunting. Annual mortality estimates of local (nestling) bandings from 1956-61 were between 54.4 and 64.5 percent. Subsequent adult mortality from local bandings was between 51.0 and 52.4 percent. Mean annuals mortality estimates of flying doves banded from 1964-69 were calculated using composite dynamic, composite time-specific, relative recovery rate, a …

Nutrient Transport In The Lake Poinsett System, Jack M. Skille

Electronic Theses and Dissertations

Concentrations and loads of nutrients transported through the Lake Poinsett system were monitored from April 1, 1970 to April 1, 1971. An annual 2.07x 10~ m3 surface discharge into Lake Poinsett transported 1.66 x 104 kg (PO4) phosphorus, 1.28 x 104 kg nitrate nitrogen, and 3.90 x 104 kg organic carbon. The Big Sioux River-Dry Lake system contributed 63% of the phosphorus, 45% of the nitrate nitrogen, and 43% of the organic carbon load. The remaining portion entered Lake Poinsett from the Lake Albert drainage. Of the annual load of nutrients transported into Lake Poinsett, 33% of the nitrate nitrogen …

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

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 …

"Remarks On The Motion Picture No Blade Of Grass", Cornel Wilde

Special Collections: Oregon Public Speakers

No abstract provided.

The 1963-64 Lake Mead Survey, J. M. Lara, J. I. Sanders, Bureau Of Reclamation

Publications (WR)

The 1963-64 Lake Mead survey was run to compute the reservoir capacity. Results of the geodetic and hydrographic surveys and sediment sampling equipment are described. The geodetic survey showed Hoover Dam subsided an average of 118 mm since 1935. Sonic sounding, photogrammetry, and crosssectional profiling methods were used to run the hydrographic survey. Reservoir area and capacity tables were generated using an electronic computer. The present lake capacity is 29,755,000 acre-ft and the reservoir surface area is 162,700 acres at elevation 1229 ft. 2,720,000 acre-ft of sediments accumulated in the lake since 1935. A unit weight of 60 Ib/cu ft …

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

Record In Rock: A Handbook Of The Invertebrate Fossils Of Nebraska, Roger K. Pabian

Conservation and Survey Division: Faculty and Staff Publications

Table of Contents:

Introduction
What Are Fossils? How Do They Form?
Fossilization
How Are Fossiliferous Rocks Formed?
What is Paleontology?
What Can Fossils Tell Us?
Fossils and Geologic Time
Fossils as Environmental Indicators
Fossils and Conservation
How Are Fossils Named?
Where Are Fossils Found?
Collecting Courtesy
Tools for Collecting Fossils
Tips on Collecting Fossils
Safety Rules
Quarry Safety
Safety Don'ts to Remember
Preparation of Specimens
A Bit of Advice
General Characteristics of Nebraska's Important Fossils
Phylum Protozoa (Single-Celled Animals)
The Living Protozoan
Fossil Protozoans from Nebraska
Phylum Porifera (Pore Bearers or Sponges)
The Living Sponge
Fossil Sponges from Nebraska
Phylum …

Some Wildflowers Of Western Australia, C. F. H. Jenkins, A. S. George

Bulletins - 3000 - 3999

MUCH recent discussion on conservation has centred around the importance of wild flower reserves and the need for protecting one of thci State's most important tourist attractions. Although less important to visitors than the flowers, many of our wild animals hold equal interest for nature lovers and scientists, and they also need protection.

ALTHOUGH the brilliance and diversity of West Australian wildflowers are widely appreci­ated, the localities where they can best be observed in their natural state are not so well known.

In this article a brief outline is given of the more important districts in the south western part …

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

Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg

School of Natural Resources: Faculty Publications

The concentration of CO, in air sampled above a sugar beet crop was measured during July, August, and early September 1966 at Scottsbluff, Nebr. During July the mean daytime concentration decreased from 310 ppm to 283 ppm as the leaf area index increased from 0.8 to 4.0. Only small deviations from the mean daytime Concentration of 283 ppm occurred during the remainder of the season. The mean nocturnal concentration during this period was 320 ppm and was more variable than the daytime concentration. The daily amplitude of concentration averaged 70 ppm and was as great at times as 100 ppm. …

Us/Ibp Analysis Of Ecosystems Newsletter No.1-6, Us/Ibp

Progress reports

No abstract provided.

Soil Conservation Handbook, D J. Carder, G W. Spencer, Soil Consevation Service

Books & book chapters

Soil Conservation means, basically sound land management. With good management the Ste's resources of productive land can be bot only maintained but actually improved. It is a question of deciding the best use for each soil type and situation. Profitable Production must be kept up in changing economic conditions without destroying land assets in the process.

Water Conservation : The Storage Life Of Farm Dams, D J. Carder

Journal of the Department of Agriculture, Western Australia, Series 4

HOW MANY stock can a dam of a certain size and depth be expected to carry and how long will the supply last?

What size of dam is needed in case the winter rains fail? How many stock can a dam support and still provide a drought supply?

Ecology Of The Black-Footed Ferret And The Black-Tailed Prairie Dog, Robert G. Sheets

Electronic Theses and Dissertations

Research involving the black-footed ferret (Mustela nigripes) and black-tailed prairie dog (Cynomys ludovicianus) was conducted during 1968 and 1969. Eighteen prairie dog burrows were excavated in 1968 and 1969. Burrow systems ranged from 13 to 109 feet long and 3 to 14 feet deep. Fifteen of the burrows exhibited dome-shaped entrances leading to a gradually descending passageway which made an abrupt vertical ascent to a crater-shaped entrance. Nest chambers were found in 6 burrows. Earthen plugs created by prairie dogs in burrows after ferret departure ranged from 9 to 33 feet long. Eighty-two ferret scats were recovered. Animal remains found …

Pheasant Use And Waterfowl Production On State And Private Lands, Charles R. Elliott

Electronic Theses and Dissertations

Ring-necked pheasant (Phasianus colchicus) use on state-owned game production areas was compared to that on privately-owned areas in east-central South Dakota. Four 80-acre and four 160-acre tracts of state lands were paired with private areas of the same size having the same amount of wetland and were selected from aerial photographs taken before the purchase of the state-owned areas. None of four nests were successful on private areas in 1968 and three of five nests were successful on game production areas. In 1969 three of 19 nests were successful on private areas and 10 of 21 nests were successful on …

Effects Of Aldrin On Young Pen-Reared Pheasants, Joseph Edward Hall

Electronic Theses and Dissertations

Three levels of encapsulated aldrin (.05, 1.0, and 1.5 mg) were administered weekly to young pen-reared pheasants from 5 to 11 weeks of age to determine effects on growth and residue levels in brain, feathers, and whole body during and after treatment. During treatment, birds were weighed weekly. After treatment ceased, birds were weighed every other week until 21 weeks of ---. Analysis of residues was by electron capture gas chromatography. Growth of pheasants --- 5 to 21 weeks of age was depressed (P 0.01) by administration of aldrin dosages of 1.0 to 1.5 mg. Aldrin values in the brain …

Feeding Of Black Bullheads Ictalurus Melas (Rafinesque) In Experimental Cages, Kay R. Hill

Electronic Theses and Dissertations

Black bullheads, Ictalurus melas (Rafinesque), were grown experimentally from July 25, 1969, through October 21, 1969. The fish, collected from Lake Poinsett, were grown in five cages each with a water volume of 2.6 m³ and five cages each with a volume of 3.86 m³. The larger cages contained nearly 60 percent of the total 323 m³ of water volume in the cages. No significant difference in fish growth between the two cage sizes were observed. Fish in large cages gained 204.4 Kg and were fed 1550.8 Kg of food, for a food conversion of 6.60. Fish in smaller cages …