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Articles 151 - 165 of 165
Full-Text Articles in Life Sciences
Personnel Profile - Alvin L. Throne, Peter J. Salamun
Personnel Profile - Alvin L. Throne, Peter J. Salamun
Field Station Bulletins
The UWM Field Stations Committee is composed of dedicated individuals interested in preserving natural areas for educational and scientific purposes. Success in the acquisition of such areas is often the result of the extra effort of one person. Such is the role played by Professor Alvin L. Throne, the Chairman of a previous committee and a former member of the present one. Until this Bulletin came into existence, there was no way to inform his many students and friends of his contributions, so this belated article is an expression of appreciation to Professor Throne for his years of dedicated service.
Why Support A Field Station?, Forest Stearns
Why Support A Field Station?, Forest Stearns
Field Station Bulletins
No abstract provided.
The Use Of Bio-Telemetry For Studying Squirrel Population Dynamics And Behavior, Paul E. Matthiae
The Use Of Bio-Telemetry For Studying Squirrel Population Dynamics And Behavior, Paul E. Matthiae
Field Station Bulletins
A full understanding of the ecology and behavior of any animal requires a knowledge of the animal's movements. Historically, data from natural events involving any animal under natural conditions have been obtained from such methods as trapping, marking, recapture and visual observations. In the 1950's and early 1960's however, major breakthroughs in data gathering techniques were made when biologists began developing telemetering devices with which to monitor animal movement and to a limited degree, physiological parameters. Wild animals were being tracked for days, weeks and even months, continuously telemetering such events as temperature, daily and seasonal movement patterns, dispersal and …
Phenology - The Layman's Science, Forest Stearns
Phenology - The Layman's Science, Forest Stearns
Field Station Bulletins
Phenology is embedded in human folklore and culture but it is also a science--a science of the relationships between biological events and environmental changes, chiefly those of season and weather. As a science phenology is closely related to ecology, physiology, meteorology and genetics. Agriculture, forestry and game management are among the applied sciences that depend heavily on phenological knowledge.
Yews And Hemlocks - A Progress Report., Peter J. Salamun
Yews And Hemlocks - A Progress Report., Peter J. Salamun
Field Station Bulletins
An investigation which has been underway for several years at the Cedar-Sauk Field Station and the adjacent Cedarburg Bog is concerned with the American Yew or Ground Hemlock (Taxus canadensis Marsh.) and the Eastern Hemlock (Tsuga canadensis (1.) Carr.). The yew occurs naturally in small clumps in the upland maple-beech woods, on several islands in the bog and on the better drained ridges and knolls throughout the bog area. Nowhere is it very abundant. In contrast, the hemlock has not been reported in the vicinity of the Station; however, scattered trees of various sizes occur in some of the wooded …
Uwm’S First Phd In Botany Awarded For Study Of Cedarburg Bog, Philip B. Whitford
Uwm’S First Phd In Botany Awarded For Study Of Cedarburg Bog, Philip B. Whitford
Field Station Bulletins
Thomas F. Grittinger's thesis, entitled "Vegetational Patterns and Edaphic Relationships in Cedarburg Bog," summarized for the first time we now have a large amount of information about the variety and detailed composition of the vegetation within the bog, together with related factors such as peat depth and water quality. The vegetation types were objectively analyzed, described, and mapped, then related to site factors and history of distrubance.
Phenology, Peter J. Salamun
Phenology, Peter J. Salamun
Field Station Bulletins
A number of events are being recorded at the UWM Field Station, chiefly concerning the earliest arrival dates of certain birds and the earliest flowering dates of native woodland and bog plants. In the table below are listed some events which may be observed during the months of April and May. Those starred (*) are of particular interest to researchers at the Field Station, and any observations by our readers will be appreciated.
A 24-Hour Radiation Budget At A High-Grass Marsh In Early Winter, Dennis Mayville
A 24-Hour Radiation Budget At A High-Grass Marsh In Early Winter, Dennis Mayville
Field Station Bulletins
As with others of the numerous physical factors forming the nonliving environment of terrestrial ecosystems, the upward and downward exchanges of the fluxes of solar (short-wave) and terrestrial (long-wave) radiation often appear in the literature as yearly, seasonal, or monthly averages. Because these tend to present a misleading or incomplete picture of environmental conditions, a 24-hour series of measurements is presented here. A series of radiation measurements was taken to determine the radiation budget at a high-grass marsh in early winter.
Small Mammals At The Field Station, Donald Morzenti
Small Mammals At The Field Station, Donald Morzenti
Field Station Bulletins
Ecological studies of small mammals are undertaken for a variety of reasons. Some investigations are conducted to determine their economic relationship to man, since small mammals directly affect his welfare through transmission of diseases and parasites and through destruction of crops, orchards, and forest seedlings. Much research, however, is basic in nature. The primary objectives of such research are to aid in man's quest for knowledge concerning the distributional and population aspects of small mammals. During the summer of 1968, an intensive live-trapping program was begun to determine the status of small mammals, primarily mice and shrews, among the various …
Bird Hybrids In The Kettle Moraine, Millicent S. Ficken
Bird Hybrids In The Kettle Moraine, Millicent S. Ficken
Field Station Bulletins
Since hybridization in birds is so rare in nature, it is unusual to have the opportunity to study what happens when two species interbreed. Blue-winged Warblers (Vermivora pinus) and Golden-winged Warblers (V. chrysoptera) produce hybrids wherever they occur together. Furthermore, such hybrids are fertile and there is pairing between these hybrids and both parental species. When we learned that both species breed in the northern Kettle Moraine State Forest, we decided to see what sorts of interactions between the two species were occurring there. Our objective initially was to determine if pairing was random between the species, e.g. were Blue-wings …
Goldenrods, Peter J. Salamun
Goldenrods, Peter J. Salamun
Field Station Bulletins
The Goldenrods, with their abundance and diversity, produce one of the most brilliant natural wildflower displays in our area from mid-August to November. In North America there are about one hundred species of these plants occurring in such habitats as upland woods, marshes, bogs, abandoned fields, dry roadsides, prairies, railroad rights-of-way and even open cliffs and sandy beaches. Approximately twenty-one species are found in Wisconsin.
Benedict Prairie, Philip B. Whitford
Benedict Prairie, Philip B. Whitford
Field Station Bulletins
The Benedict Prairie Unit of The University of Wisconsin-Milwaukee Field Stations consists of about six acres, actually 100 feet wide and one half mile long, on what was once a railroad right of way on the old Kenosha-Silver Lake-Beloit branch line of the Chicago Northwestern Railroad.
In Quest Of The Elusive Ovenbird, Charles M. Weise
In Quest Of The Elusive Ovenbird, Charles M. Weise
Field Station Bulletins
The Ovenbird was selected for intensive study at the UWM Field Station for a variety of reasons. First, it is closely adapted in all respects-morphological, physiological, behavioral- to the upland forest environment, reaching maximum numbers in climax forests, such as the maple-beech forest which is under special investigation at the station. Second, because of its song it can be accurately censused and annual variations in numbers can be detected. Third, unlike most of the hard-wood forest birds, which spend most of their time in the tree canopy, the Ovenbird both nests and feeds on the ground, thus making it more …
Winter Bird Studies At The Uwm Field Station, Charles M. Weise
Winter Bird Studies At The Uwm Field Station, Charles M. Weise
Field Station Bulletins
The winter trapping program was begun in the winter of 1965-66 and was expanded and conducted more systematically in 1966-67 and 1967-68. The primary objective has been to determine accurately the daily and seasonal changes in body weight and depot fat in the Chickadee and Junco. Secondarily, we (my students and I) have been interested in the winter population densities of these birds, their organization into social groups and flocks, their movements and range of activity in the local area.
Wisconsin's Earliest Native Flowering Plant, Peter J. Salamun
Wisconsin's Earliest Native Flowering Plant, Peter J. Salamun
Field Station Bulletins
With the coming of spring there is an enthusiastic revival of interest in people for the out-of-doors and, not infrequently, a more than casual interest in the pursuit of the first flowering plant. For the stay-at-home there is contentment in simply waiting for the first Crocus, Scilla, Narcissus, Forsythia or even the Common Dandelion (Taraxacum officinale Weber) to bloom, but the dedicated naturalist is not satisfied until he finds the native harbinger-of-spring. During this adventure the often asked question is "What is the earliest native flowering species?"