Digital Commons Network^™

A Mimbres Burial With Associated Colon Remains From The Nan Ranch Ruin, New Mexico, Harry J. Shafer, Marrianne Marek, Karl J. Reinhard

Karl Reinhard Publications

The skeletal remains of an adult male associated with desiccated tissue and a coprolite were recovered from an apen-air midden deposit at the NAN Ranch Ruin (LA15049)) a large Mimbres site in Grant County) New Mexico. The find dates to about A.C. 1000-1100. Identifiable macroscopic elements in the caprolite consist offi nely fragmented corn and tiny seed fragments of an unknown plant. High amounts of willow (Salix) and mustard (Brassicaceae) pollen may indicate the ingestion of medicinal plants to combat a deteriorating health condition. The individual was approximately 35 -40 years old at the time of death and suffered from …

Parentage Analysis With Genetic Markers In Natural Populations I The Expected Proportion Of Offspring With Unambiguous Paternity, R Chakraborty, T R Meagher, P E Smouse

Faculty, Staff and Student Publications

Recent studies indicate that polymorphic genetic markers are potentially helpful in resolving genealogical relationships among individuals in a natural population. Genetic data provide opportunities for paternity exclusion when genotypic incompatibilities are observed among individuals, and the present investigation examines the resolving power of genetic markers in unambiguous positive determination of paternity. Under the assumption that the mother for each offspring in a population is unambiguously known, an analytical expression for the fraction of males excluded from paternity is derived for the case where males and females may be derived from two different gene pools. This theoretical formulation can also be …

Tall Shrub Dynamics In Northern Minnesota Aspen And Conifer Forests, J.C. Balogh, D.F. Grigal

Aspen Bibliography

Tall shrubs are a dynamic component of upland forests in the Lake States (Balogh 1983, Dunn 1986, Ohmann and Ream 1971). They are an integral part of forest element cycles, competitors with overstory for growth and reproduction, essential to post-harvest site stabilization, and a source of wildlife cover and browse (Comerford and White 1977, Dunn 1986, Robinette 1972, Tappeiner 1971).

Ecology And Interspecific Relationships Of The Painted Turtle, (Chrysemys Picta) In A Marsh-Fen Ecosystem, Eric S. Mcgee

Masters Theses

An ecological study of the painted turtle (Chrysemys picta) was conducted at the Fox River site in Chain O' Lakes State Park in northeastern Illinois from March to September in 1987. Findings were compared to two studies in 1986 concerning the common snapping turtle (Chelydra serpentina) and Blandings turtle (Emydoidea blandingi) also present in the area. Population densities and composition were evaluated to determine the degree of interspecific competition.

Two hundred-forty five turtles were captured in 1986 and 1987. Painted turtles comprised 75 percent of the chelonian population, while Blandings turtles and snapping turtles …

Autecological And Grazing Control Studies Of Dyers Woad (Isatis Tinctoria L.) On Northern Utah Rangelands, Kassim O. Farah

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Dyers woad (Isatis tinctoria L.) is a noxious weed on northern Utah rangelands. Chemical and mechanical means of control are unsuitable for rangelands. A potential alternative, biological control, is difficult due to a lack of basic ecological information. To remedy this, some aspects of the population biology and autecolgy of dyers woad were studied. The feasibility of controlling dyers woad by early spring grazing was also investigated via clipping experiments.

A population study followed the survivorship of experimentally established populations over two years. Fall germinating individuals (1984) overwintered as rosettes twice and all survivors reproduced successfully. Spring germinating individuals …

The Ecology Of Skeleton Weed In Western Australia. Survival And Reproduction Of Wild Radish Populations, F. D. Panetta

Experimental Summaries - Plant Research

1.1 Skeleton weed demographic studies (84BA17)

To determine potential growth rates of skeleton weed populations on contrasting soil types.

2.1 Wild radish demography in lupin crops (87GE86) - the results are missing in the report please see in supplementary content

Estimating Optimum Overstory Vegetation Reduction For Increasing Understory Production, John A. Tanaka

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to investigate analytical approaches for estimating the optimum (profit maximizing) rate of initial overstory kill for increasing seasonal forage availability on a specific ranch. The models were developed using the big sagebrush (Artemisia tridentata) - crested wheatgrass (Agropyron cristatum, A. desertorum) vegetation type on a Utah cow-calf-yearling operation as an example. The models should be applicable on any ranching situation where understory forage production is constrained by the establishment and growth of undesirable overstory vegetation.

Three model forms were developed and compared for their applicability to on-the-ground investment decision …

The Ecology Of Skeleton Weed (Chondrilla Juncea) In Western Australia. Survival And Fecundity Of Wild Radish (Raphanus Raphanistrum) Populations In Lupin Crops. Reproduction And Seed Persistence In Arum Lily (Zantedeschia Aethiopica)., F. D. Panetta

Experimental Summaries - Plant Research

After ripening and fates of field-stored skeleton weed seeds, 86BA11. Predation on seeds of skeleton weed, 86BA10. The effects of wetting/drying cycles upon the fates of skeleton weed seeds, 84PE42. Skeleton weed demographic studies, 84BA17. Radish control in lupins, 86N085. Seed production and seed persistence in Arum lily, 86PE56. Germination studies on fresh and stored seeds of Arum lily, 86PE57.

Evaluation Of Inter-Flock Genetic Improvement Programs For Sheep And Goats, G. B. Nicoll, L. Bodin, J. V. Jonmundson

World Congress on Genetics Applied to Livestock Production: 3rd (1986)

Some of the factors involved in inter-flock or breed improvement programs are discussed. Such programs are complicated by the fact that sheep and goats produce a wide range of products under diverse environmental, management and economic circumstances. This leads to problems in defining realistic breeding objectives arising from determining the beneficiaries of genetic improvement, the major genetic decision makers in the industry and the relative importance of the various productive characteristics. The implementation of functional performance recording systems, breeding systems to generate young sire replacements, and testing systems to disseminate genetic improvement, also depend on the conditions under which the …

A Demographic Study Of An Isolated Population Of The Gopher Tortoise, Gopherus Polyphemus; And An Assessment Of A Relocation Procedure For Tortoises, Terry J. Doonan

Retrospective Theses and Dissertations

It is acknowledged that the gopher tortoise is declining in numbers throughout its geographic range primarily from degradation and loss of suitable habitat. This research project is part of a pilot program to study the effectiveness of relocation as a mitigation method for the conservation of gopher tortoises. There was an opportunity to gather information about the tortoise population prior to its relocation, and for that reason this thesis is presented in two sections.

The first section of this work involved the analysis of the tortoise population prior to its removal from the development site. Results of two methods for …

Solid Phase Extraction Of Mammalian Cell Mitochondrial Dna And Its Electrophoretic Separation In Agarose Gels, Theresa Brick-Miller

Biological Sciences Theses & Dissertations

An improved and efficient electrophoretic procedure for the isolation of mitochondrial DNA (mtDNA) is described. The solid phase extraction procedure for the isolation of mtDNA involves embedding as few as 200,000 Ehrlich ascites tumor cells into a block of agarose, digestion of cellular membranes by detergent action and subsequent electrophoretic separation of nucleic acids in agarose gels. Genomic DNA remains in the original block of agarose while the mtDNA migrates in the separation gel to a position equivalent to that obtained for mtDNA isolated by traditional procedures.

The efficacy of a large number of detergents, agarose concentrations, embedding conditions, embedding …

Dynamics Of Arid-Land, Perennial Plant Populations With An Examination Of Potential Causal Agents, Henry George Gardiner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rigorous statistical examination of the population dynamics of a number of long-lived perennial plant species permitted an interpretation of changes in those populations and the establishment of potentially important causal agents. Survival and recruitment of six species from the mulga-zone rangelands of Western Australia varied across three climatically different periods following the removal of domestic livestock.

Two species' populations (Eragrostis xerophila and Maireana glomerifolia) had their rates of increase reduced by kangaroo and euro grazing. Both survival and recruitment of Eragrostis xerophila were reduced by this grazing while Maireana glomerifolia suffered reduced recruitment during all periods. These negative …

The Annual Meeting Of The Iowa Academy Of Science April 22-23, 1983 [Program, 95th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Reproduction In A Nebraska Sandhills Population Of The Northern Prairie Lizard Sceloporus Undulatus Garmani, Royce E. Ballinger, Dale L. Droge, Steven M. Jones

Papers in Herpetology

The reproductive cycle of Sceloporus undulatus was studied in western Nebraska. Females mature in the 1st year following hatching at a size of 45 mm SVL. Two clutches averaging 5.5 eggs each are produced. Egg sizes are similar to other grassland populations and contain approximately 650 g-cal. per egg. Egg weight to body weight ratios of 0.33 were the highest which have been reported for any S. undulatus population. Variation in life history characteristics within and between grassland and eastern woodland habitat types are explicable given a knowledge of the growing season, predation intensity and demographic environment.

The Effect Of Exploitation On Some Parameters Of Coyote Populations, Robert P. Davison

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study was conducted to examine the effect of exploitation on population parameters of coyotes (Canis latrans). Hypotheses tested were: (1) Substantial levels of exploitation do not change spring and fall coyote densities significantly; (2) Coyote recruitment (reproduction and immigration) rates are unaffected by substantial levels of exploitation; (3) Annual coyote survival rates are not related to intensity of harvest rates; (4) Coyote emigration rates remain unchanged by substantial levels of exploitation. Coyote demographic parameters were measured from 1975 to 1978 for a treatment population subject to substantial exploitation (Curlew Valley, Utah and Idaho), and for an unexploited …

Population Limitation Of Jackrabbits: An Examination Of The Food Hypothesis, William R. Clark

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study was conducted to examine the importance of forage resources in limiting peak population density of black-tailed jackrabbits (Lepus californicus). The research design combined field studies of jackrabbit diet and vegetation impact with computer simulation of herbivore nutrition and population dynamics. The relationships between available forage, dietary intake, energy and protein balance and population changes were compared for high and low population density. Hypotheses tested were : (1) Dietary composition is unaffected by availability above 10 kg/ha; (2) Jackrabbits do not require more forage than is available at high population densities; (3) Dietary composition is not significantly …

Coyote-Prey Relationships In Curlew Valley During A Period Of Low Jackrabbit Density, Stephen W. Hoffman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Coyote-prey relationships were examined in Curlew Valley, northern Utah and southern Idaho, during a period of low jackrabbit density (from September 1973 to May 1975). The Utah and Idaho portions of Curlew Valley were treated separately. Field work provided estimates of relative and absolute rodent densities as well as relative coyote density each spring and fall. Laboratory analysis of over 2,300 scats and 249 stomachs provided detailed information on coyote diets. Jackrabbit population data for northern Utah were obtained from L. Charles Stoddart.

Four species, Peromyscus maniculatus, Perognathus parvus, Eutamias minimus, and Dipodomys ordii comprised over 90 …

Live Trap Preference Among Grassland Mammals, Robert K. Rose, Norman A. Slade, James H. Honacki

Biological Sciences Faculty Publications

In two independent studies, small mammals of grassland communities in eastern Kansas, when given a choice, preferred Fitch to Sherman live traps. Except for the harvest mice in the demographic study, the type of preferred trap and magnitude of selection was remarkably comparable, with microtines showing slight, and cricetines strong, preferences overall. The merits of each type of trap are compared, and related to season, weather, prior experience, and trap-associated mortality.

Plant Demographic Studies Of Tall Threetip Sagebrush-Grass Vegetation On The Eastern Snake River Plains, Idaho, Kenneth Harold Rea

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It has commonly been assumed that grazing decreases the longevity of plants, however, very few studies address this question. Knowledge of mean age, longevity and other aspects of population dynamics would help improve estimates of productivity and nutrient cycling and aid understanding of range condition and trend. These data would also aid in developing a theory of community organization and control.

As a step toward these ends, pantograph records from twelve 1 m² plots established at the U. S. Sheep Station on the Snake River Plains of southeastern Idaho between 1923 and 1935 were examined. The plots were mapped …

Plant Demographic Studies Of A Desert Annuals Community In Northern Utah Dominated By Nonnative Weedy Species, David R. Duba

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Field and laboratory investigations were conducted relating to factors controlling distribution and abundance of annual species growing in a disturbed portion of the salt desert shrub zone on fine-textured soils. Dominant species on the site in the two study years were the nonnative, Halophytic, late-summer maturing, Halogeton glomeratus (Bieb.) C.A. Mey., and Bassia hyssopifolia (Pall.) Kuntze. Contrasting amounts of precipitation were received in the two years; in 1974, spring conditions were so dry that two early-maturing, sub-dominant annuals, Descurainia pinnata (walt.) Britton, and Lepidium perfoliatum L. were essentially absent. They successfully reproduced under more favorable 1975 conditions.

Studies on species …

Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, A. K. Temte

Memorandum

No abstract provided.

Plant Demographic Studies Of Desert Annual Communities In Northern Utah Dominated By Non-Native Weedy Species, D. R. Duba, B. E. Norton

Memorandum

No abstract provided.

Plant Demographic Studies Of Desert Annual Communities In Northern Utah Dominated By Non-Native Weedy Species, D.R. Duba, B.E. Norton

Memorandum

No abstract provided.

Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T.H. Hsiao, A.K. Temte

Memorandum

No abstract provided.

The Effects Of A Calisthenic Exercise Program On Fourth Grade Elementary School Children, Toby Bedford

Masters Theses

No abstract provided.

Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, A. K. Temte

Memorandum

No abstract provided.

The Growth Of The Red-Ear Turtle Pseudemys Scripta Elegans In A Thermal Lake In Southwestern Illinois, Diana Avalos

Masters Theses

No abstract provided.

Colony Characters Of Termites As Related To Population Density And Habitat, W. L. Nutting, M. I. Haverty, J. P. Lafage

Memorandum

No abstract provided.

Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, Ting H. Hsiao, Thomas W. Green

Memorandum

No abstract provided.

Impact Of The Black-Tailed Jackrabbits (Lepus Californicus) On Vegetation In Curlew Valley, Northern Utah, Mark Westoby

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The interrelations of black-tailed jackrabbits and the desert-shrub vegetation on which they were feeding were studied in Curlew Valley, Northern Utah. The vegetation was described as a three-cornered continuum, the corners being types dominated respectively by Artemisia tridentata, Atriplex confertifolia, and Sarcobatus vermiculatus.

Jackrabbit diet was studied by microscopic analysis of plant fragments in stomachs from shot animals. The method was inaccurate, apparently because the ratio of identifiable tissues to all ingested tissues was very low, and varied between plant taxa, and seasonally. This problem seems intractable for desert shrub vegetation.

The diet was similar to that …