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Chemical Characteristics Of Natural Licks Used By Big Game Animals In Western Montana, Dwight S. Stockstad

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

The Ecology Of Mosquito Borne Viruses1, Carl M. Eklund

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

The ecology of a mosquito borne virus involves a consideration of the growth of the virus within the vertebrate and arthropod hosts, the reaction of these hosts to the presence of the virus, and the vertebrate-arthropod associations which are necessary for the dissemination and maintenance of the virus. Little is known of the physiological properties of a particular host and virus which permit multiplication of the virus. In this review stress will be laid upon studies which attempt to discover the mechanisms in nature which maintain these viruses. The first section will relate to the geographical distribution and time of …

Comments On The Bacillariophycaea Of North Central Arkansas, Albert Robinson Jr.

Journal of the Arkansas Academy of Science

No abstract provided.

An Ecological Study Of The Second Ward Of Omaha, James R. Mead

Student Work

An ecological study relating to sociology involves the spatial, selective and distributive functions and relations of human beings in a given geographical and cultural area. These functions and relations characterize the forms and types of social interaction. The sociological concept of the term "ecology" has been borrowed from the students of botany and zoology. Ecology has been defined as "that phase of biology that considers plants and animals as they exist in nature, and studies their interdependence, and the relation of each kind and individual to its environment. This definition is not sufficiently comprehensive to include all the elements that …

Ornithological Literature, Wilson Bulletin

Wilson Bulletin

No abstract provided.

Effects Of Excessive Natural Mulch On Development, Yield, And Structure Of Native Grassland, J. E. Weaver, N. W. Rowland

Department of Agronomy and Horticulture: Faculty Publications

Prairie vegetation is so universally mowed, grazed, or burned that little information has been recorded on its behavior under complete protection. Climax grassland, when grazed lightly or even moderately, may retain essentially its natural composition over extremely long periods (16, 18). But aside from observation there is little information upon the unusual and rare phenomenon of complete protection of grassland from disturbance over a considerable period of time.

107th University Of Notre Dame Commencement And Mass Program, University Of Notre Dame

Commencement Programs

107th University of Notre Dame Commencement and Mass Program

Summer

An Ecological Study Of The Bacterial Flora Of Westhampton Lake, Thomas Constantine Mandes

Master's Theses

Most natural bodies of water which have been investigated have been shown to contain bacteria. Exceptions apparently occur where we find those waters which, due to their chemical constitution and physical makeup, are inimical even to the growth of bacteria .

Since bacteria are virtually ubiquitous in waters, it would necessarily follow that biologists interested in this aspect of biology would have intensively studied bacteria and the part they play in the biology of water. Quite the contrary; instead of the study continuing along lines laid down by early scholars it has shifted to a study of bacteria which were …

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Effects Of Temperature And Light On The Mass Rearing Of The Geminate Leafhopper, Colladonus Geminatus (Van D.), Walter H. A. Wilde

Biology

Mass rearing experiments with Colladonus geminatus ( Van D.) conducted in an experimental greenhouse laboratory from January 30, 1952, to April 18, 1952, indicated light had important breeding effects on C. geminatus, the geminate leafhopper. A light intensity of forty foot-candles provided by a 100 watt incandescent bulb for a period of 16 hours daily was the most effective of the three light intensities and the three heat ranges tried. It was found in the expirimental cages that light had the effect of speeding up the development of the new leaf hopper generation, progeny of the overwintering adults from …

Helminths From The Round-Tailed Muskrat, Neofiber Alleni Nigrescens Howell, With Descriptions Of Two New Species, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Two specimens of round-tailed muskrat, Neofiber alleni nigrescens Howell, were examined for helminth parasites. Four species, a trematode and three cestodes, were collected. Two of these, Quinqueserialis floridensis and Paranoplocephala neofibrinus, are described as new. Cittotaenia praecoquis Stiles, 1895, is recorded from this host, and larval cestodes are tentatively identified as Taenia lyncis Skinker, 1935.

Graduate Research In Ornithology, Aaron M. Bagg, Gustav A. Swanson

Wilson Bulletin

No abstract provided.

Notes On The Ecology Of The Short-Billed Marsh Wren In The Lower Arkansas Rice Fields, Brooke Meanley

Wilson Bulletin

No abstract provided.

Bryophytes Of South-Central Colorado. Part 1, James H. Craft, Irene H. Craft

Proceedings of the Iowa Academy of Science

Prominent among the names of the many bryologists who have collected in Colorado are those of Leo Lesquereux, T. S. Brandegee, T. C. Porter, and A. J. Grout. Their findings are discussed by Dr. Geneva Sayre in an unpublished dissertation on the mosses of Colorado, a work completed in 1938 (2). She points out that, with the exception of Brandegee's collections in southwest Colorado, collections of southern Colorado mosses are either meagre or lacking. The largest reported collection of recent date from southern Colorado is that of Dr. Belle K. Stewart who collected fourteen species in the Creede Valley incident …

Whole Issue Nebraska Bird Review (Jan 1952) 20(1)

Nebraska Bird Review

Table of Contents

Fall Field Day, 1951.............................................................. 3

Editorial ................................................................................ 9

Notes on the Food Habits of the Great Horned Owl, by J. Knox Jones, Jr. 10

James Chamberlain Crawford, by Alexander Wetmore .................................... 11

Fred M. Dille Collection ................................................................................................ 12

Twenty-five Year Summary of Bird Migration in Nebraska, Part 6, by William F. Rapp, Jr ..................................................................... 13

News and Notes .............................................................. 19

Five Year Summary of Christmas Bird Counts, by Janet L. C. Rapp and William F. Rapp, Jr ................................................................................. 15

General Notes ................................................................. 19

Book Reviews ................................................................. .23

Membership List .................................................... .26

An Ecological Study Of Cladophora Glomerate (Chlorophyceae) Near Dallas, Martha Hasty Thurman, Robert A. Kuehne

Field and Laboratory

Cladophora glomerata, a green alga of the order Ulotrichales, family Cladophoraceae, is characterized by dich tomous branching, with ramuli ending in dense terminal fascicles…. Between October, 1949 and July, 1950, we collected this species in the Dallas area from Elm Fork of the Trinity River, and Bachman's, White Rock, and Ten Mile creeks.

Addenda On Texas Chamaesyce (Euphorbiaceae), Lloyd H. Shinners

Field and Laboratory

No abstract provided.

The Influence Of The Seasons On The Crime Rate, Gerhard J. Falk

Journal of Criminal Law and Criminology

No abstract provided.

An Annotated List Of The Lygaeidae Of Iowa And Illinois (Hemiptera: Heteroptera), James A. Slater

Proceedings of the Iowa Academy of Science

In this paper an attempt has been made to present an adequate list of Lygaeidae found in Iowa and Illinois, and to indicate what is known of the intrastate distributions of the various species. This paper is limited to geographic considerations and, in this sense, assumes the character of a "local list"' as no biological or ecological considerations are discussed. It is felt that our knowledge of the Nearctic Lygaeidae has reached a degree of maturity where knowledge of state and lesser faunal areas is essential to encourage the badly needed bionomic work that should develop with a relatively stable …

An Investigation As To The Uses Of The Topographic Map And Improvements Desired By The General Public, George O. Boeckman

Masters Theses

"The demand for topographic maps from hunters, fishermen, vacationers, professional engineers etc, has been increasing with each passing year. In 1940 people bought some 700,000 copies of topographic maps. In 1946 sales had jumped to well over 2,000,000 copies. Civilian use of these maps by veterans has contributed substantially to the tremendous expansion of demand for maps since World War II. In recent years, the quality of topographic maps has been greatly improved by refinements in methods and by the use of aerial photography in map compilation. This advancement, and an ever-increasing demand from engineers, geologists, and many others for …

Pacific Islands Herpetology, No. V, Guadalcanal, Solomon Islands. A Check List Of Species, Vasco M. Tanner

Great Basin Naturalist

No abstract provided.

The Tiger Vol. Xlv No. 7 - 1951-10-11, Clemson University

Tiger Newspapers

No abstract provided.

The President's Page, Maurice Brooks

Wilson Bulletin

No abstract provided.

Nesting Of The Marsh Hawk At Delta, Manitoba, William Robert Hecht

Wilson Bulletin

No abstract provided.

Pinus Virginiana In The Forest Primeval Of Five Southern Indiana Counties, Mildred I. Ross

Butler University Botanical Studies

The numerous misconceptions of the primeval conditions in our country plainly show that the most common knowledge of an environment may become less than a half-truth by the time a second generation of men lives in that same area. New environmental conditions bring out the hidden potentialities of plants and animals and gradually men formulate new concepts and believe that they are describing the organism under primeval conditions. It is, of course, amazing how very little man placed on record about the things with which he was associated when he came into the wilderness where life was controlled by natural …

Physiographic Influences Of The Edwards Plateau On Its Endemic Amphibian Fauna-A Résumé, Lawrence Curtis

Field and Laboratory

It has long been known that the geographic ranges of certain plants and animals not only closely parallel each other, but also the physiography of their habitat. Indeed, plants and animals seem often to follow clearly certain intangible lines, in their distribution.

Young Goldfinches Eaten By Garter Snake, Charles C. Carpenter

Wilson Bulletin

No abstract provided.

Ecology Of Passerine Birds Wintering At Utah Lake, Joseph R. Murphy

Theses and Dissertations

During the period of October to April of the winter of 1950-51, an ecological study was undertaken of a population or passerine birds wintering in a segment of the Utah Lake Shore. Available winter weather data indicated that although such factors as precipitation, temperature, and wind may often be severe, they are not critical enough to prevent a fairly large population of passerine birds from spending the winter months in the study locale. Five fairly distinct plant communities can be recognized in the area. There is evidence which indicates that certain passerine bird species are especially dependent on a particular …

An Ecological Study Of A Sphagnum Lake In The Subalpine Forest Of The Uinta Mountains Of Utah, Howard C. Stutz

Theses and Dissertations

A study was made of the ecology and floristics of a small bog lake referred to as Moss Lake, in the Grandaddy lakes region of the Uinta Mountains , Utah . Three consecutive summers, 1948, 1949, and 1950, were spent in collecting the data presented in this study. Throughout the study the following ecological measurements were made: 1. Water 2. Soil 3. Macroscopic vegetation 4. Plankton 5. Macroscopic animal forms.

A Preliminary Study Of The Distribution Of Fleas In Utah Known To Be Capable And Potential Vectors Of Plague, Dorald M. Allred

Theses and Dissertations

Plague outbreaks in the past have been disastrous where domestic rats and their fleas of certain species were common. Plague has been known to occur in most parts of the world (Robertson 1923), and has occurred as human epidemics for many centuries (Dubos 1948).