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- Arnoglossum plantagineum (1)
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- School of Biological Sciences: Faculty Publications (3)
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Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
Métodos Cuantitativos Para La Conservación De Los Vertebrados, Michael J. Conroy, John P. Carroll, Juan Carlos Senar, Jeffrey J. Thompson
Métodos Cuantitativos Para La Conservación De Los Vertebrados, Michael J. Conroy, John P. Carroll, Juan Carlos Senar, Jeffrey J. Thompson
School of Natural Resources: Faculty Publications
Este libro es destinado para el uso por biólogos del campo y otras personas, incluso biólogos de campo en el futuro que podrían estar en un curso de la universidad y trabajando en estudios y conservación de animales. Nuestro objetivo es que los biólogos usen este libro como (haciendo apología a nuestro colega Evan Cooch) una “introducción suave” al campo de la ecología cuantitativa. Esperamos convencer a los lectores que los métodos y aproximaciones del libro no son solo para los matemáticos, estadísticos y programadores de computadoras, sino que de hecho son herramientas esenciales para practicar la conservación en el …
Ecology And Morphology Of The Late Miocene Musk Deer, Longirostromeryx Wellsi (Artiodactyla: Moschidae: Blastomerycinae), Katheryn Y. C. Chen
Ecology And Morphology Of The Late Miocene Musk Deer, Longirostromeryx Wellsi (Artiodactyla: Moschidae: Blastomerycinae), Katheryn Y. C. Chen
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Longirostromeryx wellsi, one of the latest surviving members of the extinct clade Blastomerycinae (Artiodactyla: Moschidae), possesses highly derived craniodental morphology that deviates from typical musk deer form. Previous work suggests that the unique anatomy of L. wellsi represents adaptations for occupying open savannas. To test this hypothesis I conduct principal components analysis on five postcranial bones of L. wellsi, comparing them to that of several extant ruminant artiodactyls, which are divided among seven habitat categories. These elements are also compared with the postcrania of other blastomerycines. These analyses indicate that L. wellsi anatomy is most similar to that of other …
Assessment Of Disturbance Effects Of An Existing Wind Energy Facility On Greater Prairie-Chicken (Tympanuchus Cupido Pinnatus) Breeding Season Ecology In The Sandhills Of Nebraska, Jocelyn O. Harrison
Assessment Of Disturbance Effects Of An Existing Wind Energy Facility On Greater Prairie-Chicken (Tympanuchus Cupido Pinnatus) Breeding Season Ecology In The Sandhills Of Nebraska, Jocelyn O. Harrison
School of Natural Resources: Dissertations, Theses, and Student Research
Recent wind energy development in the Great Plains of North America has given rise to concerns of potential impacts on the greater prairie-chicken (Tympanuchus cupido pinnatus). Recent studies in fragmented landscapes have suggested greater prairie-chickens may avoid wind facilities, which may lead to habitat loss and negative impacts on reproduction and survival. But, it is unknown if there is a similar effect in contiguous grass landscapes. Thus, we investigated the effect of a pre-existing, 36-turbine wind energy facility on greater prairie-chicken nesting, brood-rearing, and spatial ecology in the Nebraska Sandhills. We captured and marked 78 female greater prairie-chickens …
Discovery And Delimitation: Criconematid Nematodes Of North American Grasslands, Magdalena Jean Olson
Discovery And Delimitation: Criconematid Nematodes Of North American Grasslands, Magdalena Jean Olson
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Approximately 200 years ago, North American landscapes were dominated by vast expanses of grassland. The Great Plains, an ecologically complex and diverse ecoregion, extended from Canada to the Gulf of Mexico, and from the Rocky Mountains to the border of the eastern hardwood forest in Indiana. Now the original tallgrass prairie exists in small widely dispersed remnant patches surrounded by agroecosystems. This study is an effort to characterize soil nematode diversity and population structure within those remnant patches. The plant parasitic nematode family Criconematidae serves as our indicator for nematode diversity, due to its global distribution, high abundance in natural …
Interspecific Egg Rejection As Ecological Collateral Damage From Selection Driven By Conspecific Brood Parasitism, Bruce E. Lyon, Daizaburo Shizuka, John M. Eadie
Interspecific Egg Rejection As Ecological Collateral Damage From Selection Driven By Conspecific Brood Parasitism, Bruce E. Lyon, Daizaburo Shizuka, John M. Eadie
School of Biological Sciences: Faculty Publications
Distinguishing between interspecific and intraspecific coevolution as the selective driver of traits can be difficult in some taxa. A previous study of an avian obligate brood parasite, the black-headed duck, Heteronetta atricapilla, suggested that egg rejection by its two main hosts (two species of coot) is an incidental by-product of selection from conspecific brood parasitism within the hosts, not selection imposed by the interspecific parasite. However, although both species of coot can recognize and reject eggs of conspecific brood parasites, which closely resemble their own, they paradoxically also accept a moderate fraction of duck eggs (40–60%), which differ strikingly …
Tallgrass Prairie Vegetation Response To Spring Fires And Bison Grazing, Stephen L. Winter, Brady W. Allred, Karen R. Hickman, Samuel D. Fuhlendorf
Tallgrass Prairie Vegetation Response To Spring Fires And Bison Grazing, Stephen L. Winter, Brady W. Allred, Karen R. Hickman, Samuel D. Fuhlendorf
School of Natural Resources: Faculty Publications
Spring fires in tallgrass prairie can create environmental conditions conducive to plant growth in the subsequent growing season. Following fires, burned areas can also be attractive to grazing animals such as bison (Bison bison). Sustained grazing activity within recently burned areas can alter vegetation structure relative to nearby landscape patches that haven’t burned recently. In 2007, we collected data on bison grazing activity, vegetation structure, and the growth and reproduction of a perennial forb, Arnoglossum plantagineum, in Oklahoma tallgrass prairie. We compared these variables in landscape patches that had burned in the spring of 2007 to measurements …
Cuban Treefrogs, Osteopilus Septentrionalis (Duméril & Bibron 1841) (Anura: Hylidae), And Other Nonindigenous Herpetofauna Interdicted In Grenada, Lesser Antilles., Louis A. Somma, Paul R. Graham
Cuban Treefrogs, Osteopilus Septentrionalis (Duméril & Bibron 1841) (Anura: Hylidae), And Other Nonindigenous Herpetofauna Interdicted In Grenada, Lesser Antilles., Louis A. Somma, Paul R. Graham
Papers in Herpetology
The number of introduced nonindigenous species of amphibians and reptiles within the greater Caribbean, including Grenada, is escalating and has become an ever-increasing critical conservation concern (Daudin and de Silva 2011; Powell et al. 2011; Powell and Henderson 2012). The amount of development, tourism, and consequent import commerce is increasing, requiring careful regulation of the pet trade and fauna introduced for biological control as well as diligence in cargo inspection. Herein we document the first records of nonindigenous Cuban Treefrogs, Osteopilus septentrionalis (Duméril and Bibron 1841), interdicted from cargo, along with recent interceptions of two species of nonindigenous lizards already …
Diversity Of Yeast And Mold Species From A Variety Of Cheese Types, Nabaraj Banjara, Mallory J. Suhr, Heather E. Hallen-Adams
Diversity Of Yeast And Mold Species From A Variety Of Cheese Types, Nabaraj Banjara, Mallory J. Suhr, Heather E. Hallen-Adams
Department of Food Science and Technology: Faculty Publications
To generate a comprehensive profile of viable fungi (yeasts and molds) on cheese as it is purchased by consumers, 44 types of cheese were obtained from a local grocery store from 1 to 4 times each (depending on availability) and sampled. Pure cultures were obtained and identified by DNA sequence of the ITS region, as well as growth characteristics and colony morphology. The yeast Debaryomyces hansenii was the most abundant fungus, present in 79 % of all cheeses and 63 % of all samples. Penicillium roqueforti was the most common mold, isolated from a variety of cheeses in addition to …
Nutritional Physiology Of Life-History Trade-Offs: How Food Protein–Carbohydrate Content Influences Life-History Traits In The Wing-Polymorphic Cricket Gryllus Firmus, Rebecca M. Clark, Anthony J. Zera, Spencer T. Behmer
Nutritional Physiology Of Life-History Trade-Offs: How Food Protein–Carbohydrate Content Influences Life-History Traits In The Wing-Polymorphic Cricket Gryllus Firmus, Rebecca M. Clark, Anthony J. Zera, Spencer T. Behmer
School of Biological Sciences: Faculty Publications
Although life-history trade-offs result from the differential acquisition and allocation of nutritional resources to competing physiological functions, many aspects of this topic remain poorly understood. Wing-polymorphic insects, which possess alternative morphs that trade off allocation to flight capability versus early reproduction, provide a good model system for exploring this topic. In this study, we used the wing-polymorphic cricket Gryllus firmus to test how expression of the flight capability versus reproduction trade-off was modified across a heterogeneous protein–carbohydrate nutritional landscape. Newly molted adult female long- and short-winged crickets were given one of 13 diets with different concentrations and ratios of protein …
Females Sample More Males At High Nesting Densities, But Ultimately Obtain Less Attractive Mates, Robin M. Tinghitella, Chelsea Stehle, Janette W. Boughman
Females Sample More Males At High Nesting Densities, But Ultimately Obtain Less Attractive Mates, Robin M. Tinghitella, Chelsea Stehle, Janette W. Boughman
School of Biological Sciences: Faculty Publications
Background: Sexual selection is largely driven by the availability of mates. Theory predicts that male competition and female choice should be density-dependent, with males competing more intensely at relatively high density, and females becoming increasingly discriminating when there are more males from whom to choose. Evidence for flexible mating decisions is growing, but we do not understand how environmental variation is incorporated into mate sampling strategies. We mimicked threespine stickleback (Gasterosteus aculeatus) breeding conditions in pools with high and low densities of nesting males and allowed females to search for mates to determine whether 1) mate search strategies change with …