Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 9 of 9
Full-Text Articles in Life Sciences
The March Ice Storm: Disaster And Opportunity, Paul Matthiae, Philip B. Whitford
The March Ice Storm: Disaster And Opportunity, Paul Matthiae, Philip B. Whitford
Field Station Bulletins
The ice storm of March 1-5,1976, of perhaps once in a century severity, hit the UWM Field Station with ice loads up to 2 in. thick. The crowns of many trees, especially older beech and maple, were literally torn asunder by the sheer weight. In the swamp forest most tamaracks had their tops snapped off. The beech-maple forest of course was one of the Nature Conservancy's first major projects in Wisconsin, one of the jewels of the Scientific Areas System, and fortunately one of the most thoroughly studied tracts in the state. We had excellent pre-storm data on the forest …
Soil Monolith Construction: A Practical Teaching Experience For Field And Lab, Nicholas P. Kobriger, James B. Levenson
Soil Monolith Construction: A Practical Teaching Experience For Field And Lab, Nicholas P. Kobriger, James B. Levenson
Field Station Bulletins
Soil formation, structures and differences are difficult to visualize or understand without being able to experience them. Most of us are familiar with the soil profiles (soil sequum) on display in many Soil Conservation Service or County Extension Service offices. Whether an ecologist, engineer, or home gardener, we have all examined the intricate structures, features and horizon development. The objective of this paper is to describe a technique to construct such soil monoliths for classroom use with minimal expense.
Mineral Cycling And Productivity In An Upland Deciduous Forest: Soils And Methods, Nicholas P. Kobriger
Mineral Cycling And Productivity In An Upland Deciduous Forest: Soils And Methods, Nicholas P. Kobriger
Field Station Bulletins
This study was designed to improve our understanding of the dynamics of the upland forest and of the productivity of Wisconsin forest communities. Data were collected to quantify the biological cycling of nutrients, nutrient availability and water availability, the principal factors supporting production of organic matter in forest ecosystems (Duvineaud and Denaeyer-De Smet, 1970). Using the data from this study we can then examine the stability of the upland deciduous forest and its response to the environment, for example recovery from a catastrophic event such as the March ice storm. Once this ecosystem's structure and functioning are known, we can …
Landscape Patterns And Forest Island Interactions, Forest Sterns, James B. Levenson, Paul Matthiae
Landscape Patterns And Forest Island Interactions, Forest Sterns, James B. Levenson, Paul Matthiae
Field Station Bulletins
On March 18, the Field Station welcomed faculty and graduate students involved in the Landscape Pattern Analysis project. This study has both theoretical and practical objectives. The theoretical problems are concerned with island biogeography as outlined by Robert MacArthur and E. O. Wilson were discussed in the Spring 1975 Field Station Bulletin. These questions relate principally to how island size and distance from neighboring islands affect species composition and extinction, i.e., affect the diversity of island communities. These theoretical questions are being approached in a series of studies undertaken jointly by scientists at the Oak Ridge National Laboratory, Rutgers University, …
Cold Air Drainage: A Field Experiment, James Levenson, Paul Matthiae
Cold Air Drainage: A Field Experiment, James Levenson, Paul Matthiae
Field Station Bulletins
The following descriptions of a 24-hour cycle of the flows of radiant energy in November 1974 were written as follow-up assignments to a class exercise measuring these energy flows at the Field Station (Meteorology 511 - Dynamic Meteorology I: Radiation). All the flows of short-wave (or solar) radiation (wave length less than 3 micrometers) and long-wave radiation (wave lengths 3 to 50 micrometers) were measured, and their interrelations calculated.
Natural Landscaping Bill (Ab 348), Philip Whitford
Natural Landscaping Bill (Ab 348), Philip Whitford
Field Station Bulletins
Native plants are making a comeback in Wisconsin, thanks to the growing number of homeowners who are switching to "natural landscaping". Many parks are also preserving or restoring areas with native plant communities, and the state highway department and some county departments are reducing mowing and spraying of road sides to encourage the return of native wildflowers, grasses and some shrubby species. Too often such efforts are stymied, however, by a municipal cutting ordinance or noxious weed list, and citizens are told to conform with the conventional clipped lawn aesthetics (an ecological wasteland) or the city will do it for …
Species Composition And Absolute Population Density Of Breeding Birds Obtained By Two Methods, Dennis Keith Gustafson
Species Composition And Absolute Population Density Of Breeding Birds Obtained By Two Methods, Dennis Keith Gustafson
Field Station Bulletins
John Emlen in 1971 (Auk 88:323-341.) explained details of a new technique for determination of bird population densities involving a transect or strip-census count. From this count, using previously established coefficients of detectability, absolute population densities can be determined. The Emlen technique is applicable in summer and winter while necessitating proportionately fewer man-hours in the field than comparable methods. This study was an evaluation of the technique by comparing it with the territorial mapping method. The study was conducted in the upland beech-maple woods at The University of Wisconsin-Milwaukee Field Station. Twelve censuses each year were taken from June 28 …
Island Biogeography In Southeastern Wisconsin: A Progress Report., James Levenson, Paul Matthiae
Island Biogeography In Southeastern Wisconsin: A Progress Report., James Levenson, Paul Matthiae
Field Station Bulletins
Ecosystems develop as a result of interactions between the biotic and abiotic components in the environment. Natural systems are diverse and stable when interactions between the community and the supersystem are in balance. Change or perturbation in the supersystem will effect a commensurate change in the natural subsystems. Urbanization results in the remaining natural systems becoming isolated within the urban system-a supersystem quite unlike that which gave rise to the natural system. As a result, the natural subsystem must change in the way in which it interacts with its new supersystem to reach equilibrium. A mechanism for such change in …
The Radiation Weekend, David Miller, Anthony Siebers, Joe Manning
The Radiation Weekend, David Miller, Anthony Siebers, Joe Manning
Field Station Bulletins
The following descriptions of a 24-hour cycle of the flows of radiant energy in November 1974 were written as follow-up assignments to a class exercise measuring these energy flows at the Field Station (Meteorology 511 - Dynamic Meteorology I: Radiation). All the flows of short-wave (or solar) radiation (wave length less than 3 micrometers) and long-wave radiation (wave lengths 3 to 50 micrometers) were measured, and their interrelations calculated.