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Transactions of the Nebraska Academy of Sciences and Affiliated Societies
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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Potential Hybridization Among Two Species Of California Salvia, Ellie Morrison, Bryan Drew
Potential Hybridization Among Two Species Of California Salvia, Ellie Morrison, Bryan Drew
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Hybridization among plants is fairly common, particularly in instances where closely related species are sympatric. One example of a group in which hybridization has been detected is the genus Salvia (Lamiaceae; mint family). Salvia is a diverse genus consisting of about 1,000 species and is defined primarily by having only two stamens, each with their anther sacs separated by elongated connective tissue. The genus has diversity centers around the world, including Southwest Asia and the Mediterranean region, Mexico/Central America, northern and central South America, and temperate East Asia. The genus also has a smaller species radiation of 19 species in …
Genetic Protocols For Dna Extraction From White-Tailed Deer Cast Antlers To Confirm Individuality, Zach Carter, Brian C. Peterson, Casey W. Schoenebeck, Kimberly A. Carlson
Genetic Protocols For Dna Extraction From White-Tailed Deer Cast Antlers To Confirm Individuality, Zach Carter, Brian C. Peterson, Casey W. Schoenebeck, Kimberly A. Carlson
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
White-tailed deer (Odocoileus virginianus) are the most sought-after deer species in America. The antlers of mammals, such as deer, are one of the fastest regenerative tissues in the world and are grown and naturally cast every year. Research on cast antlers have been used for a variety of purposes including population comparisons and impacts of deer health due to climatic stressors. When investigating cast antlers, it is important to confirm individuality of match sets in addition to antlers of the same individual between years. Therefore, individuality must be confirmed genetically, and protocols must be developed and established to …
Molecular And Morphological Variation Among Populations Of Pediomelum Tenuiflorum (Pursh) A.N. Egan (Fabaceae) In Nebraska, Usa, Chauncey L. Kellar Jr., Roxi Kellar
Molecular And Morphological Variation Among Populations Of Pediomelum Tenuiflorum (Pursh) A.N. Egan (Fabaceae) In Nebraska, Usa, Chauncey L. Kellar Jr., Roxi Kellar
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Individuals of Pediomelum tenuiflorum, “wild alfalfa”, from disjunct populations in Nebraska vary extensively in their overall gestalt. Those in the western and central part of the state have a very slender growth habit, with thin stems and few, small flowers; whereas, those in the southeast have a very robust growth habit with heavy-looking stems and many tightly clustered flowers. For nearly 200 years, taxonomists have alternated between splitting P. tenuiflorum into two species, with the many-flowered morphotype named P. floribundum, and lumping all the morphological variants into one species as they are now. In this study, we investigated …
Linking Taxonomic Diversity And Trophic Function: A Graph-Based Theoretical Approach, Marcella M. Jurotich, Kaitlyn Dougherty, Barbara Hayford, Sally Clark
Linking Taxonomic Diversity And Trophic Function: A Graph-Based Theoretical Approach, Marcella M. Jurotich, Kaitlyn Dougherty, Barbara Hayford, Sally Clark
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
The purpose of this study is to develop a novel, visual method in analyzing complex functional trait data in freshwater ecology. We focus on macroinvertebrates in stream ecosystems under a gradient of habitat degradation and employ a combination of taxonomic and functional trait diversity analyses. Then we use graph theory to link changes in functional trait diversity to taxonomic richness and habitat degradation. We test the hypotheses that: 1) taxonomic diversity and trophic functional trait diversity both decrease with increased habitat degradation; 2) loss of taxa leads to a decrease in trophic function as visualized using a bipartite graph; and …