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Full-Text Articles in Life Sciences
Uncovering Morphological Variation In Light Of Genetic Data Within The Ozark Minnow, Notropis Nubilus, Sara Katherine Holmes
Uncovering Morphological Variation In Light Of Genetic Data Within The Ozark Minnow, Notropis Nubilus, Sara Katherine Holmes
Honors Program Theses
It has been hypothesized that the modern distribution of the Ozark minnow was shaped by the fragmentation of a widespread ancestral population by periodic glaciations during the late Pliocene and early Pleistocene eras (Berendzen et al., 2010). Today, the species comprises three distinct genetic clades that are: upper Mississippi and northern Ozarks, western Ozarks, and southern Ozarks. In light of this hypothesis, the objective of this study is to determine if the morphology of the fish displays differences that parallel the genetic variation. One way to determine these morphological differences within a population is to look at the geometric morphometrics …
Early Avian Colonization In A Prairie Biofuel Project, James T. Mason
Early Avian Colonization In A Prairie Biofuel Project, James T. Mason
Dissertations and Theses @ UNI
The steady decline of grassland bird populations has been attributed to agricultural intensification. The establishment of native prairie vegetation for biomass fuel has potential to reverse this decline. The Tallgrass Prairie Center at the University of Northern Iowa is investigating the potential of perennial native vegetation as a biofuel feedstock. In the spring of 2009, research plots located in seven previously row cropped fields in Black Hawk County, Iowa, were seeded with one of four treatments of native vegetation: 1) switchgrass monoculture, 2) five native warm-season grasses, 3) 16 native species, and 4) 32 native species. Treatments were replicated four …