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Student Work

Theses/Dissertations

1976

Biology

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Anatomical Data For The Classification Of Muhlenbergia Pungens., C. Martin Warwick Sep 1976

Anatomical Data For The Classification Of Muhlenbergia Pungens., C. Martin Warwick

Student Work

Introduction: The genus Muhlenbergia Schreb. is a member of the Gramineae. Of the 110 species described to date, 55 species are American (Gleason, 1963). The species are most numerous in the southwestern states. Muhlenbergia includes members of considerable diversity and several efforts have been made to subdivide the genus. Hitchcock (1913) states that members of Muhlenbergia have been classified in other genera such as Vilfa , Sporobolus, Calamagrostis, Clomena, Bealia , Chaboissaea, and Trichloa. However, no classification has been totally satisfactory.


Grassland Reestablishment Under Burning And Mowing Management In Eastern Nebraska., James N. Becic May 1976

Grassland Reestablishment Under Burning And Mowing Management In Eastern Nebraska., James N. Becic

Student Work

Bluestem prairie (Adriopogon Panicum Sorghastrum) (Kuchler 1964) once covered much of eastern Nebraska (Weaver 1954, Weaver and Albertson 1956, Costello 1969) but extensive cultivation since the mid-1800’s has eliminated most of these native Prairie stands. Four types of management have been widely used in managing remaining native bluestem Prairie ranges; these include burning, mowing for hay, raising, and prevention of burning, mowing, or grazing. Historically, burning of bluestem Prairie occurred frequently in both spring and fall and was initiated by lightning and native-American Indians (Catlin 1848, Komarek 1964, 1966, Anderson 1972); grazing by large herbivores was extensive but probably less …


A Taxonomic Investigation Of Some Rhizomatous Species Of The Genus Muhlenbergia (Gramineal)., James Kurtz May 1976

A Taxonomic Investigation Of Some Rhizomatous Species Of The Genus Muhlenbergia (Gramineal)., James Kurtz

Student Work

Introduction: The genus Mulenbergia, usually placed in the subfamily Eragrostoideae (Stebbins and Crampton, 1961; Gould, 1975) is a large, widely distributed, group of grasses, encompassing numerous species and various growth forms. The subgenus Muhlenbergia, comprised of mesic, broad-leaved, usually rhizomatous species, can easily be separated from the rest of the genus on the basis of growth habit and habitat preferences (Pohl, 1969). Species of the subgenus are widely distributed in North America but are most abundant in the deciduous forest of the eastern part of the continent.


The Effects Of Grazing Management On Small Mammal Density And Diversity In Nebraska Sandhills., Michael C. Schrad Apr 1976

The Effects Of Grazing Management On Small Mammal Density And Diversity In Nebraska Sandhills., Michael C. Schrad

Student Work

Introduction: Strong relationships exist between vegetative structure and composition of grassland and the animal composition in terms of density and diversity (MacArthur 1961, Wiens 1973). Recent investigations of grassland habitat management and its effect on the avifauna, indicate that the primary mechanism of habitat alteration of a mixed or short grass prairie is grazing (Owens and Myres 1973; Balda 1975; Wiens and Dyer 1975).