James A. Graaskamp, Richard T. Ely, and the Tradition of Real Estate and Urban Land Economics at the University of Wisconsin

Author(s):  
Marc A. Weiss
Author(s):  
Marybeth Lorbiecki

As you walk into the current University of Wisconsin-Madison’s Department of Forest and Wildlife Ecology, on the second floor of Russell Laboratories, you’ll see it is a far cry from Leopold’s 424 Farm Place, next to the university cow barns. Even so, resting just outside the department’s office door is a handmade Leopold Bench—one of those simply designed pieces with crossed-plank legs holding up a plank seat and back. As the Environmental Protection Agency’s Landscaping site states: “To spy a Leopold bench in someone’s yard is to know something about the family who there resides. … Its form, resting alone under a tree or in congregation around a fire-pit, reminds us of Leopold’s thoughtfulness.” This handmade blond bench, though, is over a half-century old. It was a gift to the Professor from his department—and wood-burned into it are the names of Aldo’s secretaries and graduate students for him to remember them by, and now for us to do the same. The department, of course, has changed radically since Aldo unexpectedly left. It web page displays a photo of Aldo in the upper corner and lists twenty-two faculty members, four of whom are women (which he would have liked). The fields of expertise presented at first seem like Leopold methods and topics on steroids: forest biometry, forest genetics, molecular ecology, forest remote sensing, spatial analysis, modern climate change. Other specialties are perspectives he had already been integrating into his thinking and planning: landscape ecology, forest ecosystem ecology, tree physiology, forest and environmental history, conservation biology, land use/land cover change, hydrology, population dynamics, conservation management extension, resource policy, ecosystem management, society and natural resources. Scanning the expertise of the emeritus and affiliate faculty, you can see even further outgrowths of Leopold’s far-ranging, integrated thinking and imagining: forest pathology, natural resource and land economics, biogeochemistry, international forestry, development planning, recreation management, economic forecasting, forest soils, human behavior and resource management, nutrient and carbon cycling in forest, nursery, and urban ecosystems.


Author(s):  
Hans Ris

The High Voltage Electron Microscope Laboratory at the University of Wisconsin has been in operation a little over one year. I would like to give a progress report about our experience with this new technique. The achievement of good resolution with thick specimens has been mainly exploited so far. A cold stage which will allow us to look at frozen specimens and a hydration stage are now being installed in our microscope. This will soon make it possible to study undehydrated specimens, a particularly exciting application of the high voltage microscope.Some of the problems studied at the Madison facility are: Structure of kinetoplast and flagella in trypanosomes (J. Paulin, U. of Georgia); growth cones of nerve fibers (R. Hannah, U. of Georgia Medical School); spiny dendrites in cerebellum of mouse (Scott and Guillery, Anatomy, U. of Wis.); spindle of baker's yeast (Joan Peterson, Madison) spindle of Haemanthus (A. Bajer, U. of Oregon, Eugene) chromosome structure (Hans Ris, U. of Wisconsin, Madison). Dr. Paulin and Dr. Hanna are reporting their work separately at this meeting and I shall therefore not discuss it here.


Author(s):  
Patricia N. Hackney

Ustilago hordei and Ustilago violacea are yeast-like basidiomycete pathogens ofHordeum vulgare and Silene alba respectively. The mating type system in both species of Ustilago is bipolar, with alleles, A,a, (U.hordei) and a1, a2 (U.violacea) at a single locus. Haploid sporidia maintain the asexual phase by budding, while the sexual phase is initiated by conjugation tube formation between the mating types during budding and conjugation.For observation of budding, sporidia were prepared by culturing the four types on YEG (yeast extract glucose) broth for 24 hours. After centrifugation at 5000g cells were either left unmated or mated in a1/a2,A/a combinations. The sporidia were then mixed 1:1 with 4% agar and the resulting 1mm cubes fixed in 8% gluteraldehyde and post fixed in osmium tetroxide. After dehydration and embedding cubes were thin sectioned with a LKB ultratome and photographed in a Zeiss 9s transmission electron microscope or in an AE1 electron microscope of MK11 1MEV at the High Voltage Electron Microscopy Center of the University of Wisconsin-Madison.


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