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Progress Of Agricultural Experiments-1925, Bulletin, No. 221, New Hampshire Agricultural Experiment Station
Progress Of Agricultural Experiments-1925, Bulletin, No. 221, New Hampshire Agricultural Experiment Station
NHAES Bulletin
The Bulletin is a publication of the New Hampshire Agricultural Experiment Station, College of Life Sciences and Agriculture, University of New Hampshire, Durham, New Hampshire.
An Ecological Study Of Timpanogos Creek From Aspen Grove To Wildwood, Marion L. Harris
An Ecological Study Of Timpanogos Creek From Aspen Grove To Wildwood, Marion L. Harris
Theses and Dissertations
Ecology may be oonsidered as one of the vital parts of botany, since there are two ultimate facts in this science; namely, the plant and its habitat . The habitat is made up of the physical factors that control function. At Timpanogos there are so many different habitats, that the chief problem is not that of finding a problem to study, but rather that of selecting one from the many. The purpose of this paper is to point out some of the interesting features that are found in a study of Timpanogos Creek from Aspen Grove to Wildwood.
An Ecological Study Of Pasture Cover, Marshall Olin Lanphear
An Ecological Study Of Pasture Cover, Marshall Olin Lanphear
Masters Theses 1911 - February 2014
According to the report of th« Land Utilisation Committee (18) appointed by the Secretary of Agriculture in 1921 there are approximately 231,000,000 acres of humid grassland pasture in the United States* This area has an average carrying capacity of about one animal unit per five acres. (An animal unit may be defined as the equivalent of a mature horee, cow er steer, five hogs, or seven sheep* ) In addition to the above it is estimated that there are 587,000,000 acres of arid and ee»iarid pasture and range, practically all of which ie located in the fleet* The productiveness of …
Plant Production As A Measure Of Environment: A Study In Crop Ecology, J. E. Weaver
Plant Production As A Measure Of Environment: A Study In Crop Ecology, J. E. Weaver
Department of Agronomy and Horticulture: Faculty Publications
Table of Contents:
Introduction
Location and Description of Stations
Comparisons of Environments
Experimental Methods and Results, 1920
Experiments during 1921
Environmental Conditions
Plant Yield
Experiments during 1922
Environmental Conditions
Native Plant Yield
Growth Of Maize
Summary of Experiments on Native Vegetation
Summary
Range And Pasture Management, J. E. Weaver
Range And Pasture Management, J. E. Weaver
Department of Agronomy and Horticulture: Faculty Publications
Sampson's range and pasture management is an excellent example of the application of the principles of ecology to the solution of economic problems. In grazing experiments it is of equal importance to know what is happening to the stock and to the vegetation. This emphasizes the fact, which ecologists are coming more and more to recognize, that animals, both wild and domesticated, have a proper place in the environment and that they play an important role in modifying the vegetational development. This volume consists largely of first-hand information obtained by the author during fifteen years of intensive pasture investigations for …
A New Apparatus For Measuring Deep Water Temperatures, Frank A. Stromsten
A New Apparatus For Measuring Deep Water Temperatures, Frank A. Stromsten
Proceedings of the Iowa Academy of Science
There has always been a certain fascination in the study of things related to great bodies of water. The curiosity to know what is going on beneath the turbulent waves when the storm is raging and what the conditions are beneath the smooth surface when all is quiet has ever challenged our spirit of investigation. What are the environmental conditions of aquatic life has given considerable impetus to the physical and chemical phases of limnology. Temperature seems so closely interwoven into the environmental complex that careful and exact measurement of this factor is one of the first things to be …
Food Of The Short-Nosed Gar-Pike (Lepidosteus Platystomus) In Lake Okoboji, Iowa, George E. Potter
Food Of The Short-Nosed Gar-Pike (Lepidosteus Platystomus) In Lake Okoboji, Iowa, George E. Potter
Proceedings of the Iowa Academy of Science
The food habits of any animal have a distinct bearing upon its life and so it is with the Gar-pike. In order to ascertain the kind and amount of food taken by this fish, many collections were made, stomachs dissected, the contents carefully examined and preserved.
Biological Station Summer Session, 1921, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
Biological Station Summer Session, 1921, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
University of Montana Bulletin: Biological Series: Biological Station Summer Session, 1899-1974
Description of summer school offerings at the Flathead Lake Biological Station, June 18 to July 29, 1921.
The Relation Of The Smaller Forest Areas In Non-Forested Regions To Evaporation And Movement Of Soil Water, Irwin T. Bode
The Relation Of The Smaller Forest Areas In Non-Forested Regions To Evaporation And Movement Of Soil Water, Irwin T. Bode
Proceedings of the Iowa Academy of Science
The importance of the climatic and edaphic relations of forests has been the basis for wide discussion and study. The scope of this field is shown in a condensed way in a report of the Sub-Committee on Forest Investigations to the Fifth National Conservation Congress, which discusses studies undertaken up to the time of the report (1913) and presents in general results obtained. Recently, Zon, in a paper, "Forests and Water in the Light of Scientific Investigation," has presented a much more comprehensive view of the subject and the literature. He has attempted to bring together "all the well-established scientific …
Relative Transpiration Of Coniferous And Broad-Leaved Trees In Autumn And Winter, J. E. Weaver, A. Mogensen
Relative Transpiration Of Coniferous And Broad-Leaved Trees In Autumn And Winter, J. E. Weaver, A. Mogensen
Department of Agronomy and Horticulture: Faculty Publications
Transpiration has been of special interest to many investigators for a long time. At first it was considered without reference to environmental factors, but later, as more observations were made and these factors were noted to have a marked effect upon the water loss, they were taken into consideration. Many of the data assembled have been limited to plants during the growing season, so that it has seemed profitable to obtain not only quantitative data on winter losses, but also a comparison of the relative transpiration of conifers and broad-leaved trees in summer and winter.
An Ecological Study Of Dry Run, A Typical Prairie Stream, Laurence Palmer
An Ecological Study Of Dry Run, A Typical Prairie Stream, Laurence Palmer
Proceedings of the Iowa Academy of Science
Dry Run, a tributary of Cedar River in Black Hawk County, Iowa, furnishes an excellent unit for studying the ecology of a prairie stream. It is rather exceptional in that for a greater portion of the year a natural barrier is formed where the stream flows underground for the last two miles of its course. This study is concerned only with the west branch which joins a brook of similar size near the grounds of the Cedar Valley Fair Association. While this paper deals only with a description of the creek and the distribution of its fish inhabitants, it is …
Biological Station Summer Session, 1919, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
Biological Station Summer Session, 1919, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
University of Montana Bulletin: Biological Series: Biological Station Summer Session, 1899-1974
Description of summer school offerings at the Flathead Lake Biological Station, August 4 to September 12, 1919.
The Quadrat Method In Teaching Ecology, J. E. Weaver
The Quadrat Method In Teaching Ecology, J. E. Weaver
Department of Agronomy and Horticulture: Faculty Publications
The quadrat method of studying vegetation has become an integral part of many of the more important ecological investigations. Although occasionally used throughout the past century for determining the amount of plant material produced or for purposes of enumeration, it was organized into a definite system for the study of the structure and development of vegetation by Pound and Clements (15, 16) and Clements (2, 3, 5) only about eighteen years ago. Since that time it has been used, sometimes in a modified form (12, 21), by numerous investigators both American and European. Indeed, with the rapid increase in the …
On A New Subspecies Of Otter From Nebraska, Myron Harmon Swenk
On A New Subspecies Of Otter From Nebraska, Myron Harmon Swenk
Papers from the University Studies series (University of Nebraska)
Formerly otters were very common along all of our Nebraska streams. In the winter of 1819-20 they were found frequently on the Missouri river and tributary streams near Engineer Cantonment (north of Omaha), as reported by Edwin James, that botanist and geologist of the Major S.H. Long Expedition. At Fort Kearny, Nebraska, on July 5, 1856, W.S. Wood with Lieut. F.T. Bryan's survey party obtained a young female otter which is now Cat. No. 1877 (skin) and 2575 (skull) of the U.S. National Museum. Otters were also extensively and persistently trapped by the early trappers and Indians, and due to …
Further Studies In The Ecotone Between Prairie And Woodland, R. J. Pool, J. E. Weaver, F. C. Jean
Further Studies In The Ecotone Between Prairie And Woodland, R. J. Pool, J. E. Weaver, F. C. Jean
Department of Agronomy and Horticulture: Faculty Publications
A series of intensive investigations of the ecological features of the tension zone between prairie and woodland in the Mississippi valley was begun by Weaver and Thiel in 1915. These studies were continued for two seasons in Minnesota and were also extended to the prairies of eastern Nebraska in 1916. These investigations represent the first attempt to attack the prairie-forest problem on a comprehensive scale by means of the quantitative methods of modern ecology. Some of the results secured from these studies have been published as the first paper of a series planned to deal with critical investigations in the …
Cumulative Index, Volumes I To Xxv, 1887-1918
Cumulative Index, Volumes I To Xxv, 1887-1918
Proceedings of the Iowa Academy of Science
No abstract provided.
Biological Station Summer Session, 1918, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
Biological Station Summer Session, 1918, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
University of Montana Bulletin: Biological Series: Biological Station Summer Session, 1899-1974
Description of summer school offerings at the Flathead Lake Biological Station, June 25 to August 7, 1918.
Further Studies In The Ecotone Between Prairie And Woodland, R. J. Pool, J. E. Weaver, F. C. Jean
Further Studies In The Ecotone Between Prairie And Woodland, R. J. Pool, J. E. Weaver, F. C. Jean
Papers from the University Studies series (University of Nebraska)
A series of intensive investigations of the ecological features of the tension zone between prairie and woodland in the Mississippi valley was begun by Weaver and Thiel in 1915. These studies were continued for two seasons in Minnesota and were also extended to the prairies of eastern Nebraska in 1916. These investigations represent the first attempt to attack the prairie-forest problem on a comprehensive scale by means of the quantitative methods of modern ecology. Some of the results secured from these studies have been published as the first paper of a series planned to deal with critical investigations in the …
Ecological Studies In The Tension Zone Between Prairie And Woodland, J. E. Weaver, Albert F. Thiel
Ecological Studies In The Tension Zone Between Prairie And Woodland, J. E. Weaver, Albert F. Thiel
Department of Agronomy and Horticulture: Faculty Publications
Upon the completion of a series of investigations in southeastern Washington and adjacent Idaho, in which there was found to be a direct relation between the available water content of the soil and the evaporating power of the air as succession progressed from grassland through scrub to forest, the senior writer moved to Minneapolis, Minnesota. Here such excellent conditions of prairie invaded by scrub and followed by forest offered themselves for study that the services of the junior author were enlisted and an analysis of the situation attempted. Later this study was supplemented by similar work carried on at Lincoln, …
The Insect Association Of A Local Enviornmental Complex In The Dsitrict Of Holmes Chapel, Cheshire., Alfred E. Cameron
The Insect Association Of A Local Enviornmental Complex In The Dsitrict Of Holmes Chapel, Cheshire., Alfred E. Cameron
Bu
No abstract provided.
Plant Studies In Lyon County, Iowa, D. H. Boot
Plant Studies In Lyon County, Iowa, D. H. Boot
Proceedings of the Iowa Academy of Science
The subject of this paper is one of a series of ecological studies carried on by the author during the last few years, and is a study of a part of the region, consisting chiefly of high prairie, in the northwestern part of the state, the tract considered covering a part of the southwest corner of Lyon County, which is the northwesternmost county in Iowa.
Biological Station Summer Session, 1916, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
Biological Station Summer Session, 1916, State University Of Montana (Missoula, Mont.), Flathead Lake Biological Station
University of Montana Bulletin: Biological Series: Biological Station Summer Session, 1899-1974
Description of summer school offerings at the Flathead Lake Biological Station, June 19 to August 18, 1916.
Weekly Kaimin, May 7, 1914, Associated Students Of The University Of Montana
Weekly Kaimin, May 7, 1914, Associated Students Of The University Of Montana
Montana Kaimin, 1898-present
Student newspaper of the University of Montana, Missoula.
Weed Survey Of Story County, Iowa, L. H. Pammel, Charlotte M. King
Weed Survey Of Story County, Iowa, L. H. Pammel, Charlotte M. King
Proceedings of the Iowa Academy of Science
The matter of the distribution of weeds is one of interest, not only to the phytogeographer, but to the farmer and horticulturist as well. Our alien flora, though Iowa is not an old state, is a large one. In 1879 Dr. Gray prepared a list of the predominant weeds of Eastern North America. In a discussion of weed migration in The Weed Flora of Iowa, I made a comparison of weeds and alien plants in Iowa. In counting the weeds of Iowa I find that 172 of that list occur in Iowa. This list can be augmented by the addition …
Biological Station Summer Session, 1913, University Of Montana (Missoula, Mont. : 1893-1913), Flathead Lake Biological Station
Biological Station Summer Session, 1913, University Of Montana (Missoula, Mont. : 1893-1913), Flathead Lake Biological Station
University of Montana Bulletin: Biological Series: Biological Station Summer Session, 1899-1974
Description of summer school offerings at the Flathead Lake Biological Station, June 17 to July 30, 1913.
Twenty-Five Years Of Botany In Iowa, Thomas H. Macbride
Twenty-Five Years Of Botany In Iowa, Thomas H. Macbride
Proceedings of the Iowa Academy of Science
To tell of Botany in Iowa for twenty-five years, even as presented in the work of members of this Academy, is a task far more difficult than would at first appear. Shall I present a list of all Iowa botany papers for a quarter of a century; such list would mean much indeed, and such list so far as attainable may be found as an appendix to the present paper. But the slightest reflection suggests that such list, long or short, is, as a matter of fact, no measure whatever of either the industry or the achievements of those who …
An Ecological Study Of A Prairie Province In Central Iowa, Ada Hayden
An Ecological Study Of A Prairie Province In Central Iowa, Ada Hayden
Proceedings of the Iowa Academy of Science
This virgin prairie area is mostly of the kame hill, saucer type. One portion of the territory is probably the pre-Wisconsin bed of the Des Moines River whose course was changed by the ice sheet. The region examined in detail is one mile in radius and bordered by a woodland adjacent to Skunk River.