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Articles 1 - 30 of 53
Full-Text Articles in Life Sciences
Communication In Ground Squirrels, Robert Ryshke
Communication In Ground Squirrels, Robert Ryshke
Field Station Bulletins
Thirteen-lined ground squirrels (Citellus tridecemlineatus) are among the more abundant and conspicuous Midwestern mammals, yet surprisingly little is known of their behavior under natural conditions, except for the study of McCarley (1966) which concentrated on population dynamics. The object of my study was to describe the general behavior of the ground squirrel, with particular emphasis on postures and vocalizations used in communication. Communication occurs whenever the behavioral activities of one animal affect the activities of another. Communication among members of a group is an essential part of social life, reducing aggression in animal groups as well as synchronizing reproductive activities.
Influence Of Forest Openings On Climate, Diane Ringger, Forest Stearns
Influence Of Forest Openings On Climate, Diane Ringger, Forest Stearns
Field Station Bulletins
Data presented in this paper were obtained during a five year study by the U.S. Forest Service (Ringger, 1972). This study, done in a hardwood stand in Forest County, Wisconsin sought to determine the effect of opening size upon temperature and moisture. Stations were chosen under a complete forest canopy and in openings ranging from single tree size to those large enough to behave as open fields. Hygrothermographs provided continuous records of temperature and humidity.
Productivity And Energy Storage, Nic Kobriger, Forest Stearns
Productivity And Energy Storage, Nic Kobriger, Forest Stearns
Field Station Bulletins
Net annual production of plant communities is traditionally determined by measuring or estimating dry matter accumulation at the end of the growing season. Published records list crop or forest yields, i.e. the bales of hay, tons of silage, bushels of grain or cords of wood harvested. The yield represents only a portion of the organic matter produced. Each year a tree forms leaves, twigs and bark which are not harvested, and each year an entire new corn plant-roots, stalks and leaves-must develop to produce the bushels of grain. Primary production is the entire amount of growth for the year. For …
Nepal Studies Association Newsletter, Issue 2, Nepal Studies Association
Nepal Studies Association Newsletter, Issue 2, Nepal Studies Association
Nepal Studies Association Newsletter
No abstract provided.
Yields From 18-Year-Old Aspen Via Total Tree Harvesting, M.K. Benson, D.W. Einspahr
Yields From 18-Year-Old Aspen Via Total Tree Harvesting, M.K. Benson, D.W. Einspahr
Aspen Bibliography
Described are the results of harvesting the above-ground parts of an 18-year-old aspen stand and the observations made on the initial suckering of the new stand. The yields for the stand of 17.7 cunits per acre were greater than predicted yields of comparable material for the site at age 35. Suckering on the area the first area after cutting averaged 37,000 aspen stems per acre and 2.6 feet in height.
Yields From 18-Year-Old Aspen Via Total Tree Harvesting, M. K. Benson, D. W. Einspahr
Yields From 18-Year-Old Aspen Via Total Tree Harvesting, M. K. Benson, D. W. Einspahr
Aspen Bibliography
Described are the results of harvesting the above-ground parts of an 18-year-old aspen stand and the observations made on the initial suckering of the new stand. The yields for the stand of 17.7 cunits per acre were greater than predicted yields of comparable material for the site at age 35. Suckering on the area the first year after cutting averaged 37,000 aspen stands per acre and 2.6 feet in height.
Statement By Charles E. Swope, Chairman, Board Of Trustees, West Chester State College, Charles E. Swope
Statement By Charles E. Swope, Chairman, Board Of Trustees, West Chester State College, Charles E. Swope
Gordon Natural Area History & Strategic Plan Documents
No abstract provided.
A Botanical History Of Downer Woods, Peter J. Salamun
A Botanical History Of Downer Woods, Peter J. Salamun
Field Station Bulletins
The pattern of vegetation which occurs in Downer Woods, a wooded tract on The University of Wisconsin—Milwaukee campus and a landmark on Milwaukee's east side, is a reflection of the uses to which it has been subjected for a period of over two hundred years. Information to document this has been compiled by students in various field courses and by faculty members and individual students who carried out independent investigations in this woods. These persons checked land deed records, surveyors records, interviewed long-time residents who are familiar with the woods, counted tree rings and evaluated the present vegetation through a …
Phenology And Microclimate, Jeffrey M. Klopatek
Phenology And Microclimate, Jeffrey M. Klopatek
Field Station Bulletins
The Fairy Chasm Scientific Area encompasses twenty acres at the Lake Michigan end of a series of ravines that begin approximately 1 1/4 miles west of the shore of Lake Michigan in Ozaukee County. These ravines vary from sixty to one hundred feet in depth and have some slopes greater than 45°. The protection of the slopes, the cool air draining down them, and the cool winds coming off the lake, create a microclimate suitable for many northern species of plants. This study examined the effects of different microclimates on the phenology of several plant species. A second objective involved …
The Upland Hardwood Forest Of The Cedar-Sauk Field Station, James Dunnum
The Upland Hardwood Forest Of The Cedar-Sauk Field Station, James Dunnum
Field Station Bulletins
As forest communities develop, their composition is molded by many factors—climate, soil, available seed and subtle or catastrophic disturbance both natural and man-made. Given time, the pioneer species that colonize open ground are replaced by others more tolerant of shade and gradually a community develops composed of species suited to the soil and climate of the area and capable of reproduction within the forest environment. Such is the nature of the upland forest on the UWM Field Station. This study of forest composition and structure was designed to establish the nature of the Field Station stand relative to other forest …
Evaluation Of Four Systemic Insecticides Against The Cottonwood Twig Borer, Jack E. Coster, Robert G. Merrifield, R.A. Woessner
Evaluation Of Four Systemic Insecticides Against The Cottonwood Twig Borer, Jack E. Coster, Robert G. Merrifield, R.A. Woessner
Faculty Publications
No abstract provided.
Nepal Studies Association Newsletter, Issue 1, Nepal Studies Association
Nepal Studies Association Newsletter, Issue 1, Nepal Studies Association
Nepal Studies Association Newsletter
No abstract provided.
Answering Questions About Tourism: A Growing Economic Development Tool, John D. Hunt, Perry J. Brown, John H. Schomaker
Answering Questions About Tourism: A Growing Economic Development Tool, John D. Hunt, Perry J. Brown, John H. Schomaker
Forest Management Faculty Publications
No abstract provided.
Land For Ecological Purposes, Russell K. Rickert
Land For Ecological Purposes, Russell K. Rickert
Gordon Natural Area History & Strategic Plan Documents
No abstract provided.
Effects Of Feeding And Mating On Pheromone Release In The Southern Pine Beetle, Jack E. Coster, J.P. Vite`
Effects Of Feeding And Mating On Pheromone Release In The Southern Pine Beetle, Jack E. Coster, J.P. Vite`
Faculty Publications
Response of field populations of Delldroetoll1lS frontalis Zimmermann to their aggregating pheromone was correlated with pheromone content of dissectted hindgut tissues of adult beetles a determined by the gas-liquid chromatography (GLC) technique. Adult beetles in various stages of feeding activity and reproductive states were used for this purpose. Two major components of the aggregating pheromones, frontalin and trans-verbenol, were found in the largest quantities in emergent unfed females. After 48 hours of feeding, frontal in content of the hindguts was 29% and trans-verbeno content was only 5% of that of emergent females. Continuous bioassays of females feeding in host material …
Predicting Survival Of Unthinned, Old-Field Loblolly Pine Plantations, J. David Lenhart
Predicting Survival Of Unthinned, Old-Field Loblolly Pine Plantations, J. David Lenhart
Faculty Publications
A prediction equation, graph, and tables can assist forest landowners in estimating tree survival in unthinned loblolly pine (Pinus Taeda L.) plantations in the Interior West Gulf coastal plain.
An Alternative Procedure For Improving Height/Age Data From Stem Analysis, J. David Lenhart
An Alternative Procedure For Improving Height/Age Data From Stem Analysis, J. David Lenhart
Faculty Publications
No abstract provided.
A Simulation Model For The Management Of Sandhill Cranes, Richard S. Miller, George S. Hochbaum, Daniel B. Botkin
A Simulation Model For The Management Of Sandhill Cranes, Richard S. Miller, George S. Hochbaum, Daniel B. Botkin
Yale School of the Environment Bulletin Series
No abstract provided.
Forest Fuel Accumulation -- A Growing Problem, Marvin Dodge
Forest Fuel Accumulation -- A Growing Problem, Marvin Dodge
The Bark Beetles, Fuels, and Fire Bibliography
Discusses the problem caused by accumulation of forest fuels in the wild-land forests of the western USA under the policy of total fire protection pursued there for many years, and emphasizes the need to find economical and practical ways of reducing fuel hazards in these forests, especially by means of prescribed burning under conditions in which low-intensity fires can be achieved.
Lucille Vinyard Journal 1972, Lucille Vinyard
Lucille Vinyard Journal 1972, Lucille Vinyard
Lucille Vinyard Journal Collection
No abstract provided.
Size And Suckering Of Trembling Aspen Clones In Manitoba, Gustav A. Steneker
Size And Suckering Of Trembling Aspen Clones In Manitoba, Gustav A. Steneker
Aspen Bibliography
No abstract provided.
Effect Of An Aspen Clearcutting On Water Yield And Quality In Northern Minnesota, Elon S. Verry
Effect Of An Aspen Clearcutting On Water Yield And Quality In Northern Minnesota, Elon S. Verry
Aspen Bibliography
The impact of different forest types on streamflow or groundwater recharge must be considered in evaluating multiple-use alternatives. The impact of species conversion on streamflow has been directly measured at the Coweeta Experimental Watersheds in North Carolina. However, the use of net precipitation1 data, with appropriate cautions, provides a practical basis for estimating water yield differences between forest types where long-term streamflow comparisons are not available.
Estimating Woody Dry Matter Loss Resulting From Defoliation, D.F.W. Pollard
Estimating Woody Dry Matter Loss Resulting From Defoliation, D.F.W. Pollard
Aspen Bibliography
No abstract provided.
Growth And Yield Of Managed Stands, Bryce E. Schlaegel
Growth And Yield Of Managed Stands, Bryce E. Schlaegel
Aspen Bibliography
No abstract provided.
Waterfowl Habitat Trends In The Aspen Parkland Of Manitoba, W.H. Kiel, A.S. Hawkins, N.G. Perret
Waterfowl Habitat Trends In The Aspen Parkland Of Manitoba, W.H. Kiel, A.S. Hawkins, N.G. Perret
Aspen Bibliography
No abstract provided.
Mortality Of Aspen On The Gros Ventre Elk Winter Range, R.G. Krebill
Mortality Of Aspen On The Gros Ventre Elk Winter Range, R.G. Krebill
Aspen Bibliography
No abstract provided.
Projecting The Aspen Resource In The Lake States [Usa], W.A. Leuschner
Projecting The Aspen Resource In The Lake States [Usa], W.A. Leuschner
Aspen Bibliography
No abstract provided.
Silvics And Ecology In Canada, J.S. Maini
[I] Ceratocystis Canker Of Aspen. [Ii] Insect Transmission Of Ceratocystis Species Associated With Aspen Cankers, Thomas E. Hinds
[I] Ceratocystis Canker Of Aspen. [Ii] Insect Transmission Of Ceratocystis Species Associated With Aspen Cankers, Thomas E. Hinds
Aspen Bibliography
No abstract provided.
Insect Transmission Of Ceratocystis Species Associated With Aspen Cankers, Thomas E. Hinds
Insect Transmission Of Ceratocystis Species Associated With Aspen Cankers, Thomas E. Hinds
Aspen Bibliography
No abstract provided.