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Geology Tour Of Lancaster County, Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Taxonomy And Relationships Of The Northern Swans, Paul A. Johnsgard

Paul Johnsgard Collection

The recent (1972) publication of the Wildfowl Trust's book The Swans has brought together an unprecedented array of information on all of the swans of the world, and makes it desirable to raise once again the question: how many species of northern swans are there, and what are their evolutionary relationships to one another? Delacour (1954) suggested the comprehensive vernacular name 'northern swans' to distinguish 'the various knobless white swans which breed in or near the Arctic parts of the northern hemisphere' from the Mute Swan (Cygnus olor) and the three southern hemisphere swans. The northern swans have …

Multimodal Radial Pulsational Instability In A Prenova Model, V. K. Sastri, Norman R. Simon

Norman R. Simon Papers

A prenova model, consisting of a white dwarf unstably burning a shell of accreted hydrogen, was tested for stability against radial pulsations. The pulsational analysis included terms due to thermal imbalance. The model was found to be pulsationally unstable in all of the modes examined, save one in which the thermal-imbalance integrals made the crucial damping contribution. An evaluation of some uncertainties in the present analysis is followed by a more general discussion in which it is concluded that multimodal radial pulsational instability can occur in a wide variety of thermally unstable, shell-burning stars. A brief discussion of some consequences …

Cytotypes And Morphometrics Of Two Phyllostomatid Bats, Micronycteris Hirsuta And Vampyressa Pusilla, Robert J. Baker, Hugh H. Genoways, William J. Bleier, Jerry W. Warner

University of Nebraska State Museum: Mammalogy Papers

As pointed out by Jackson (1971) and Patton (1972), the key to understanding mechanisms of chromosomal evolution lies in studies of chromosomal variation within populations that can hybridize. Hybrids between cytotypes contain the answer to problems of meiotic pairing and reduced fertility, as well as information concerning the nature of zones of contact. However, before detailed studies can be initiated, chromosomal races and hybrid zones must be located. Few chromosomal races have been described for bats (Baker, 1970a). Within the family Vespertilionidae, five species are known to have such races (Baker, 1970a) and races have been reported in two species …

Cytotypes And Morphometrics Of Two Phyllostomatid Bats, Micronycteris Hirsuta And Vampyressa Pusilla, Robert J. Baker, Hugh H. Genoways, William J. Bleier, Jerry W. Warner

University of Nebraska State Museum: Mammalogy Papers

Jackson and Patton stated that the key to understanding mechanisms of chromosomal evolution lies in studies of chromosomal variation within populations that can hybridize. Hybrids between cytotypes contain the answer to problems of meiotic pairing and reduced fertility, as well as information concerning the nature of zones of contact. However, before detailed studies can be initiated, chromosomal races and hybrid zones must be located. Few chromosomal races have been described for bats. Within the family Vespertilionidae, five species are known to have such races and races have been reported in two species of the family Phyllostomatidae.

Described are chromosomal races …

Agricultural Experiment Station News December 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S OFFICE
Production of Agricultural Research and Extension
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – NOVEMBER 1973
BULLETINS PRINTED

Natural And Unnatural Selection In A Wild Goose, Paul A. Johnsgard

Papers in Ornithology

Blue goose and snow goose color phases enable the species to reproduce efficiently in the harsh Canadian climate. But hunters, more eager than sporting, are upsetting this finely tuned pattern of survival.

Whole Issue Nebraska Bird Review (December 1973) 41(4)

Nebraska Bird Review

TABLE OF CONTENTS

Recent Mammals of Crescent Lake National Wildlife Refuge, Garden County, Nebraska................ 71

A Bald Eagle Nest in Nebraska................ 76

Vertical Stratification among Selected Species of Birds ................77

Notes ................79

Index of Volume XXXXI ................81

Selenium In Nebraska's Groundwater And Streams, R.A. Engberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Water Resources News, Volume 5, No. 12, December 1973

Water Current Newsletter

From the Desk of the Director
Flood Insurance Increased
EPA Not Revealing Economic Impact to Public
Future Assessment of Nation's Resources
NSF Seeks Proposals
Train Speaks on Environment vs Energy Crisis
Economy vs Environment
Water Resources Cost-Sharing Proposals Pending
WRC Water Policy Views
Senator Church Against "District Beneficiaries"
Higher Interest Rates Blasted Again
Atkins Relates Energy to Water
Research on Wastewater Application and Nitrogen Use
New Rules for Weather Modification Programs

A Cross-Cultural Analysis Of Sex Differences In The Behavior Of Children Aged Three Through 11, Beatrice Whiting, Carolyn P. Edwards

Department of Psychology: Faculty Publications

This paper uses the cross-cultural, systematic child observations of the Six Culture Study, led by John and Beatrice Whiting of Harvard University, to investigate the validity of the stereotypes of sex differences about nurturance, aggression, compliance, dependency, and other behaviors. The children aged 3 – 11 years, were observed in natural settings in seven different parts of the world. The analysis indicates that there are universal sex differences in the children’s behavior, but the differences are not consistent nor as great as the studies of American and Western European children would suggest. Furthermore, socialization pressure in the form of task …

Heligmosomoides Johnsoni Sp. Nov. (Nematoda: Heligmosomatidae) From The Heather Vole, Phenacomys Intermedius Merriam, Virginia R. Rausch, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Heligmosomoides johnsoni sp. noy. is described from the cecum of the heather vole, Phenacomys intermedius Merriam, from the Olympic Mountains, Washington. The absence of longitudinal cuticular ridges dorsally separates H. johnsoni from species of Heligmosomoides other than H. hudsoni (Cameron, 1937), which occurs in varying lemmings, Dicrostonyx spp., and from which H. johnsoni is distinguished by its longer spicules, form of the dorsal ray, and other characters. Both Phenacomys and Dicrostonyx have a specialized cecum, with long villi around which the nematodes are found tightly coiled. The zoogeography of heligmosomid nematodes in Phenacomys is briefly discussed.

French abstract: On décrit …

Nsca - Asc - National Plan For Biological Collections, Asc Committee

Harold W. Manter Laboratory of Parasitology: Faculty Publications

American systematics collections: A national plan. Developed by a stellar group of biologists including David Wake and Peter Raven, this plan called for action by the systematics community. The estimate of needs in 1973 called for about 63 million USD for the next five years just to keep the US National Collections from disintegrating and to get them in shape to mount the huge effort needed to fully inventory the biota of the earth (a plan that was not even dreamed of until about the year 1995).

A report to the nation's systematics collections community, and includes a National Plan …

The Prairie Naturalist Volume 5, No.4. December 1973

The Prairie Naturalist

REESTABLISHMENT OF PRAIRIE IN EASTERN NORTH DAKOTA ▪ O. A. Stevens

THE AGE DISTRIBUTION OF ENVIRONMENTAL PERIODICALS ▪ D. H. Johnson

SOME OBSERVATIONS ON THE ECOLOGY OF PLUMATELLA REPENS (L.) (BRYOZOA: PLUMATELLIDAE) IN NORTHEASTERN NORTH DAKOTA ▪ R. D. Stoaks

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1973 ▪ R. N. Randall 61

NOTE: Red-bellied Woodpecker in Rolette, County, North Dakota ▪ D. T. Disrud 52

Index to Volume 5

How Many Cranes Make A Skyful?, Paul A. Johnsgard

Paul Johnsgard Collection

Every year thousands of lesser sandhills congregate along the Platte River in Nebraska on their spring migration northwards. Mainly because of local damage caused by the birds during their fall migration, they have been legally hunted since 1961. Can the population survive such persistent destruction?

One may ask the question “How many cranes are enough?” This is perhaps analogous to the rhetorical question as to how many redwood trees are needed to make a viable forest; for a remnant crane population is not only unimpressive but also seemingly does not survive or reproduce well, judging from population trends in the …

Morphological And Physiological Factors Related To Yield Of Alfalfa, A. L. Foutz, Wallace Wilhelm, A. K. Dobrenz

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Several morphological and physiological factors were measured on clones of alfalfa (Medicago sativa L. ‘Mesa- Sirsa’) which displayed a wide range in SLW, leaflet weight and leaflet area. Apparent photosynthesis, dark respiration and post-illumination burst expressed as mg C0₂ dm^-2hr^-1 were not related to yield. However, when the rate of each factor was expressed on a whole plant basis (rate x leaf area per plant) , significant relationships were found with yield. Correlation coefficients between total apparent photosynthesis, total dark respiration, total post-illumination C0₂ burst and yield were r = .71*, r = .77* …

Systematics And Evolutionary Relationships Of Spiny Pocket Mice, Genus Liomys, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Introduction

Spiny pocket mice of the genus Liomys are members of the rodent family Heteromyidae and together with the genus Heteromys form the subfamily Heteromyinae. Their geographic range extends from northern Sonora, in western Mexico, and southern Texas southward to the vicinity of the Panama Canal Zone. Within this area, members of the genus occur mainly in dry to arid situations being replaced in areas of rain forest and cloud forest by members of the genus Heteromys. The vernacular name for Liomys is based on the fact that many of their hairs have been modified in the form of …

Cc255 Energy Uses In Nebraska Agriculture, D. E. Lane, P. E. Fischbach, N. C. Teter

University of Nebraska-Lincoln Extension: Historical Materials

Campaign Circular 255: This circular includes information about energy uses in Nebraska Agriculture including machine operations, irrigation, crop drying, and electrical energy use in general.

Results Of The Third International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This is the third report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The nursery was designed to (1) test the adaptation of winter wheat varieties in a range of latitudes, daylengths, fertility conditions, water management, and disease complexes; (2) identify superior winter varieties to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of the …

Results Of Systematic Analyses For Protein And Lysine Composition Of Common Wheats (Triticum Aestivum L.) In The Usda World Collection, K. P. Vogel, V. A. Johnson, P. J. Mattern

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Protein and lysine contents of 12,613 common wheats of the USDA World Wheat Collection were determined in order to identify wheats that may be sources of genes for high protein and high lysine. Results indicate that significant genetic differences in protein and lysine content probably exist among world collection common wheats. Selection criteria have been developed for further evaluation of World Collection lines high in protein and lysine content.

Agricultural Experiment Station News November 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
NOTICE
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - October 1973
FEATURE ARTICLES

Decompositions Of Modules And Matrices, Thomas Shores, Roger Wiegand

Department of Mathematics: Faculty Publications

A canonical form for a module M over a commutative ring R is a decomposition M ≈ R/I₁ Ο … Ο R/I_n, where the I_j are ideals of R and 1₁ ≤ . . . ≤ I_n. A complete structure theory is developed for those rings for which every finitely generated module has a canonical form. The (possibly larger) class of rings, for which every finitely generated module is a direct sum of cyclics, is also considered, and partial results are obtained for rings with fewer than 2^{c …}

Water Resources News, Volume 5, No. 11, November 1973

Water Current Newsletter

From the Desk of the Director
Energy Crisis May Cause Mineral Shortages
Chlorine Shortage Near
Water Bill On Its Way
Environmental Education Act Extended
Underground Water Supply in Danger
Water Projects Endangered by Mining
Guidelines Suit Filed
Muske Speaks Out on Waste Planning
Ex-Governor Peterson Replaces Train
What Happened on the Big Blue?
Information Dissemination Program Instituted
Higgins Appointed Water Board Liaison Officer
MRBC Announces Newsletter

Dissociative Attachment From The O2 (A1 Δ G) State, P.D. Burrow

Paul Burrow Publications

The dissociative attachment cross section for production of O^- by electron impact on the metastable O₂ (a¹ Δ _g) state is studied. The cross section is found to be 4.6 ± 1.3 × 10^-18 cm² at its maximum. From the measured energy dependence, we infer that the dissociative attachment process takes place through the O^2̅ (² П_u) state as in the case of O^- production from the O₂ ground state. The information thus obtained is used to estimate the portion of the cross section for excitation of the …

Diphyllobothrium Ursi From Man In British Columbia--First Report Of This Tapeworm In Canada, Leo Margolis, Robert L. Rausch, E. Robertson

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A case of human infection in British Columbia by the tapeworm Diphyllobothrium ursi is reported and the likely source of infection is discussed. This is the first report of D. ursi in Canada and the third from humans.

Aerially Applied Methiocarb Spray For Protecting Wild Lowbush Blueberries From Birds, Rene M. Bollengier, Joseph L. Guarino, Charles P. Stone

Bird Control Seminars Proceedings

Ripening blueberries are subject to serious damage by a variety of bird species. Through a questionnaire survey, Pearson (1958) calculated that losses of highbush blueberries to birds in Massachusetts averaged about $38,000 a year in 1955-57. From a 1972 questionnaire on bird damage to highbush blueberries directed to individuals in 14 states, Mott and Stone (1973) estimated that birds damaged at least 5% of the crop, representing a minimum nationwide loss of about $1.6 million. Most species of birds that feed on blueberries are not only desirable but also protected under the Migratory Bird Treaties Act. Any means of reducing …

Fao Quelea Research In Africa, Jeffrey J. Jackson

Bird Control Seminars Proceedings

Large scale grain growing schemes are developing rapidly in Africa and the importance of birds as pests becomes more evident each year. Although the potential production of cereals is quite high in some parts of Africa, effective methods for protecting the new schemes from bird damage will have to be developed if their food raising potential is to be realized. The best known of the avian pests of cereals in Africa is Quelea quelea. In addition to their importance as pests their notoriety is due to their intensely gregarious nature. The cloudlike feeding swarms and dense nesting colonies with millions …

Crop Depredations By Waterfowl In Wisconsin, Richard A. Hunt, James G. Bell

Bird Control Seminars Proceedings

On December 5, 1965 the Governor of Wisconsin signed into law a statute permitting claims against the State for damages to crops by wild geese and ducks. This law had been rushed through the legislature in the wake of a rash of crop depredation complaints caused by Canada Geese in their off-refuge feeding flights from the Horicon National Wildlife Refuge. This paper reviews our experiences with waterfowl depredations in the development of a cooperative program by State and Federal wildlife agencies that has held a potentially serious wildlife problem to a minimum of financial losses and public relations concern.

Use Of Perches At Refinery Sites, J. J. Dill

Bird Control Seminars Proceedings

I was listed to speak about bird control on industrial sites, so I have selected three or four of the more interesting jobs that we have worked on over the past ten years. Naturally the ones that the pest control firms call us about are those that they have tackled from several different angles and been unable to solve. As a result of this, we have had several really interesting bird control jobs in conjunction with pest control firms. I think each one of them will point out different problems and ways to solve them. The first of the jobs …

Application Of An Avian Bioenergetics Simulation Model To Red-Winged Blackbird - Crop Relations, John A. Wiens, Melvin I. Dyer

Bird Control Seminars Proceedings

The impact of bird populations upon the properties or processes of ecosystems is mediated through patterns and magnitudes of energy flow. This impact may be either direct, by processing of large quantities of energy or nutrients, or indirect, through feedback control of other ecosystem rate processes or components. In either case, however, the impact is a result of the population dynamics and the pattern and magnitude of food consumption of the birds. Recent research by several groups points to a relatively small direct impact on birds on most natural ecosystems (Wiens 1973). Impact through feedback control, a more difficult relationship …