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Full-Text Articles in Life Sciences
The Bell Natural History Museum, An Aid To Teaching Botany, Harold W. Hansen
The Bell Natural History Museum, An Aid To Teaching Botany, Harold W. Hansen
Journal of the Minnesota Academy of Science
Much of the regular academic year does not lend itself to observation of plants in their natural habitat outdoors. The museum exhibits can serve as study aids in the off season, although they should not be utilized as substitutes for field work. This study systematized some materials available for class use. Museum files, display legends, and original observations were used. From the Bell Museum of Natural History, 112 exhibits were listed and coded for location; 384 specimens, of 247 species were listed from individual displays; a massed alphabetized species index was prepared. The exhibit "Maple-Basswood Forest" was studied in detail; …
Lichen Studies On Allison Savanna, Clifford Wetmore
Lichen Studies On Allison Savanna, Clifford Wetmore
Journal of the Minnesota Academy of Science
Soil and tree lichens were studied on the Helen Allison Savanna in Anoka County, Minnesota. Sample plots established in parts of the savanna have had fires at various time frequencies, and one section has had no recent fires. Fire has not eliminated any lichen species on the trees but has reduced their frequency in the lower trunk plots. Most soil species of lichens are eliminated by even infrequent fires. Fifty two species were found on trees and 13 species on the soil.
Composition Of Goldenrod (Solidago: Compositae) Populations By Species In The Upper Midwest, William E. Miller
Composition Of Goldenrod (Solidago: Compositae) Populations By Species In The Upper Midwest, William E. Miller
Journal of the Minnesota Academy of Science
In each of 100 abandoned agricultural fields grown over with goldenrod, stems were diagnosed and counted in 20 occupied 0.4 M plots selected by hoop tossing. Preliminary results differed little between hoop tossing and random plot selection, and between 0.9 and 0.4 m plot sizes. In rank order of stem abundance the taxa were Solidago altissima L. S. canadensis L. complex S. gigantea Ait. S. graminifolia (L.) Saliab. S. nemoralis Ait. S. ulmifolia muhl. others. An average of 2.2 taxa were recorded per field, and three or more taxa in at least one plot in 34 percent of fields. Where …