Biological and Physical Anthropology Commons^™

Using Fiber-Optic Reflectance Spectroscopy (Fors) To Identify Human Decomposition Fluid Characteristics In Plant Leaves And Soil, Anielle Duncan

Masters Theses

Anthropologists may be asked by law enforcement or family members to assist in the search for missing deceased individuals. The search areas are often in harsh, rugged terrain for which some technologies, such as ground penetrating radar, cannot be used. Fiber-optic reflectance spectroscopy (FORS) is a portable instrument that can collect information on plants and soil in the surrounding environment, even in austere environments. This study aimed to test whether FORS could be used to identify decomposition fluid in nearby plants and soil in the visible near-infrared (VNIR) and short-wave infrared (SWIR) spectral regions. Using FORS to analyze the spectral …

A Handy Study Of Secular Change In Metacarpals Using The Terry Collection And Utk Donated Skeletal Collection, Helen E. Martin

Masters Theses

Hand morphology reflects an individual’s physical interaction with the world around them. Technological innovation, improved nutrition and health, changes levels of physical activity, and other environmental factors provoke secular change in skeletal morphology. This study elaborates on previous secular change research that has documented the narrowing of the American skeletal form in recent American history, and it contributes new information to this field by focusing on metacarpals. By utilizing a dataset comprising individuals from the Robert J. Terry Collection (N=213) and adults from the UTK Donated Skeletal Collection (N=180), this study examines metacarpal morphology for secular change over a 170-year …

Comparison Of Male And Female Rib Sternal Ends And The Effects Of Aging Using Elliptical Fourier Analysis, Marta M. Paulson

Masters Theses

Sex and age make up two of the main tenets of the biological profile. Most anthropologists would argue that sex is one of the most important aspects of the profile. When creating a biological profile, the first step is to estimate sex of the individual because this can affect age estimation using the os coxa or estimations of stature. Past studies have noted that even though ribs carry out the same function in males and females there are morphological differences that can affect age estimation using the ribs. This study uses Elliptical Fourier analysis to compare differences in overall shape …

Body Size Interactions With Pubic Symphysis Age-At-Death Estimation: A Critical Analysis Of Senescence Of The Pubic Symphysis Components, Elizabeth A. Ronald

Masters Theses

Biological anthropologists struggle with accuracy and precision during age-at-death estimation when attempting to correlate biological age with chronological age, especially in older adults. Research has shown that intrinsic and extrinsic factors can cause this discrepancy. Anthropologists have recently found that body size may affect age-at-death estimation, with larger individuals being more commonly overaged and smaller individuals being underaged (Merritt, 2019; Wescott and Drew, 2015). This study elaborates on previous work in three ways. First, by applying Hartnett’s (2010) pubic symphysis phase method as the age-at-death estimation method used, which has not been assessed for body size interactions and is likely …

A Study Comparing “Better Body Bags” Versus Standard White Body Bags To Estimate Relative Preservation Of Human Genomic And Morphological Information, Serena A. Thariath

Masters Theses

In disaster scenarios, identification of the dead usually is delayed until after help is given to the living. During delays in recovery and transport of deceased individuals, decomposition of soft tissues will occur at a fast rate if individuals are not refrigerated. The Better Body Bag, or BBB, was designed for the International Committee of the Red Cross (ICRC) with features such as a vacuum seal, reflective coating, and absorbent pad to help delay the onset of decomposition that could render someone unidentifiable. In this study, the BBB was tested to determine if the individuals placed within a BBB yielded …

Secular Change In Croatian Male Crania: 1812-1973, Ileana Ilas

Masters Theses

The study of secular change is the study of changes that have taken place in the human body during recent centuries. Although changes that affect populations are generally understood to occur over many centuries and millennia, anthropological studies have shown that population changes have occurred in the last two centuries, over a relatively small time period comprising a mere two hundred years. Biological anthropologists in particular are interested in how the human skeleton has changed in recent history, whether in the limbs, the torso, or the cranium. Changes have been observed in all areas of the skeleton, and these changes …

Curvilinear Fractures In Burned Remains: An Assessment Of The Relationship Between Fracture Convexity And Fire Directionality, Kimber G. Cheek

Masters Theses

Burned remains present a challenge for forensic anthropologists due to the variable nature of fires, the unique way fires impact remains, and the impact of heat changes on the analysis of the remains. A topic of extensive study is the fracture patterns seen in burned remains. Curvilinear fractures are one type of fracture that was originally discussed in the context of studying the preburned state of remains (Baby, 1954; Binford, 1963; Buikstra and Swegle, 1989). These fractures are thought to be created through the kinetic energy generated as muscles shrink and pull on the periosteum, fracturing the bone below (Symes …

An Analysis Of Mincer's Method And Ut-Age, Sarah Hartman

Masters Theses

Third molars have the most developmental variation of all human dentition, yet Mincer’s method and the computer program UT-Age use third molars to estimate the age of migrants crossing the U.S. border. Most migrants subjected to dental exams are classified as Hispanic. However, the term and reference samples used to estimate age do not account for the possible population variation that the term “Hispanic” can encompass. Additionally, third molar reference samples do not address the possible influence of impaction on third molar development. The objective of this study is to assess the effects of various sources of third molar variation …

Simulating Fluvial Transport Patterns Of Human Remains In The Tennessee River, Karli Palmer

Masters Theses

Law enforcement and search and recovery personnel often encounter difficulties when trying to determine where to find a decedent within an aquatic environment. Drowning, boating accidents, and other water related deaths are not uncommon. However, expensive equipment such as sonar and remote operated vehicles, or specially trained rescue divers are often required when searching for remains. Due to both public health and ethical concerns, there is a lack of controlled studies on aquatic decomposition and fluvial transport of human remains, which has contributed to the difficulty of predicting where remains in the water may be located. The purpose of this …

Chemical Elemental Analysis Using Portable X-Ray Fluorescence As A Means Of Sorting Commingled Human Remains, Matthew Mikal Davis

Masters Theses

Anthropological analyses include the examination of individual skeletal elements to estimate the biological profile of an unknown individual (age, sex, stature, and ancestry). Commingled human remains (the remains of multiple individuals mixed together) present a significant challenge to these analyses. Commingled skeletal elements may appear similar in size and color, making visual determinations of which bones belong to a certain person insufficient to ensure accurate sorting. Furthermore, when remains are fragmentary as well as commingled, it is more complicated to re-associate each element with a single individual. Traditional methods of sorting commingled remains include pair matching, osteometrics, taphonomic assessment, and …

Factors Influencing Primate Hair Microbiome Diversity, Catherine Kitrinos

Masters Theses

Primate hair is both a substrate upon which essential social interactions occur and an important host-pathogen interface. As commensal microbes provide important immune functions for their hosts, understanding the microbial diversity in primate hair could provide insight into primate immunity and disease transmission. While studies of human hair and skin microbiomes show differences in microbial communities across body regions, little is known about the nonhuman primate hair microbiome. In this study, we collected hair samples (n=159) from 8 body regions across 12 nonhuman primate species housed at 3 US institutions to examine 1) the diversity and composition of the primate …

Assessing The Precision Of Cranial And Mandibular Morphoscopic Traits From 3d Surface Scans, Sarah Thomas Schwing

Masters Theses

Virtual anthropological (VA) methods have been successfully used to capture metric data in the form of standard caliper measurements as well as volumetric data from various human skeletal elements. Virtual anthropological investigations of morphoscopic traits have increased over the past two decades, however, greater attention has been paid to investigations of metric data and to the use of CT technologies. Few studies have focused on morphoscopic data and fewer have employed 3D surface scans in data collection. Morphoscopic VA studies largely pertain to age estimation using the os coxa; fewer pertain to sex estimation and, to the author’s knowledge, no …

Grandmotherhood In Ukraine: Behavioral Variation And Evolutionary Implications, Sofiya Shreyer

Masters Theses

Grandmothers are known to increase the health and well-being of their grandchildren in many different populations. However, grandmothers may vary in their contributions based on their relatedness to their grandchildren. In some populations, maternal grandmothers decrease the risk of mortality and increase the health of their grandchildren more than paternal grandmothers. Grandmaternal influence also sometimes varies based on the gender of the grandchild. The behavioral mechanisms of grandmaternal investment are not well understood and have not been explored in the heavily intergenerational context of Eastern Europe. This study examines the behavioral variation of sixty-two Ukrainian grandmothers through interviews and a …

Archery's Lasting Mark: A Biomechanical Analysis Of Archery, Tabitha Dorshorst

Masters Theses

The physical demands of archery involve strenuous movements that place repetitive mechanical loads on the upper body. Given that bone remodels in response to mechanical loading (Ruff, 2008), it is reasonable to assume that repetitive bow and arrow use impacts upper limb bone morphology in predictable ways. The introduction and increased use of archery have been suggested to impact bilateral humeral asymmetry (Rhodes and Knüsel, 2005; Thomas, 2014). However, this claim is yet to be tested in vivo. This project aims to use kinematic and electromyographic approaches to validate claims inferring that, 1. archery places mechanical loading on the non-dominant …

Fat Bias And Culture Shock: Psychosocial Adjustments In Post-Obesity Life, Scott Thomas Macpherson

Masters Theses

Obesity in the United States is unprecedented levels, affecting adults and children as well. As our society has become for sedentary since industrialization, the nation has become fatter. The escalating rate of obesity has had a negative effect on the health of millions of Americans. Health problems such as metabolic disorders and other comorbidities, for instance, hypertension, Type II diabetes, heart disease, weight related cancers etc., (Mozaffarian and Benjamin 2013). The collective cost of obesity is to the nation is staggering, weighing in at $270 billion a year, childhood obesity costs nearly $15 billion alone (Hammond and Levine 2010). This …

The Influence Of Body Size On Sexual Dimorphism, Haley Elizabeth Horbaly

Masters Theses

Accurate sex estimation of human skeletal remains is imperative for skeletal biologists, and relies upon the sexual dimorphism between males and females in a population. The degree of dimorphism, and hence the accuracy of sex estimation methods, are known to vary among populations, and while such global patterns have been well studied, the underlying causes of this variation are relatively unclear. Body size—a sexually dimorphic trait that also varies among populations—has previously been shown to affect skeletal morphology, yet whether specific body size parameters, such as stature and body mass, influence the expression of traits used for nonmetric sex estimation …

Estimating Postmortem Intervals Of Human Remains Recovered In Mid-Western Waterways: A Test Of Terrestrial And Aquatic Body Scoring Methods, Amanda Rose Fink

Masters Theses

In attempt to determine postmortem intervals (PMI), forensic investigators often rely on observed amounts of postmortem taphonomic alterations of the human body. Research has been conducted in an attempt to understand and predict the sequence and rate of human decomposition using total body scoring methods as well as accumulated degree days (ADD) (Megyesi et al. 2005). While most research focuses on methods of decomposition scoring in terrestrial environments, Heaton et al. (2010) devised a method to aid in the prediction of PMI and postmortem submersion intervals (PMSI) in an aqueous environment. Using 73 forensic cases collected from the Hennepin County, …

Geographic Information Systems (Gis) And Predictive Modeling Of Body Disposal Sites, Annemarie Catherine Gundel

Masters Theses

Homicide victims are often discovered by accident or located through witness testimony, both of which are unreliable methods. Moving a victim’s body from the scene of the crime to a secondary disposal site may further complicate their discovery, delaying recovery, identification, and evidence collection. Homicides are exponentially more difficult to investigate, solve, and prosecute without a body. In the medicolegal context, a body disposal site prediction model is an alternative to relying on luck or witness testimony. Predictive models were created using body disposal data collected from the Office of the Chief Medical Examiner (OCME), Connecticut, to explore the feasibility …

Identity By The Numbers: Cancerous Lesions And Likelihood Ratios, William Daniel Cawley

Masters Theses

The use of Bayesian theory has been gaining popularity within the forensic anthropology community for its ability to model the way in which decisions are made based upon varying levels of confidence. However, many forensic anthropologists have been reticent to adapt Bayesian approaches given the general lack of knowledge in regards to this approach (Konigsberg and Frankenburg, 2013:153). The purpose of this thesis is to demonstrate how the application of an establish Bayesian framework can be used to determine likelihood ratios representing the probative value of skeletal lesions consistent with cancer for use in forensic personal identification. To do this, …

Effects Of Terrain On Reconstructions Of Mobility In Past Populations, Erin M. Whittey

Masters Theses

Femoral and tibial diaphyseal geometry has frequently been used to evaluate mobility and other patterns of physical activity in past populations. The high antero-posterior (A-P) to medio-lateral (M-L) bending rigidity ratio (I_X/I_Y) typical of many hunter-gatherer femora, for instance, may reflect mechanical loads associated with long distance travel. The possible confounding effect of physical terrain on lower limb diaphyseal morphology is rarely evaluated. This study investigated the possible effect of terrain on lower limb shape ratios (I_X/I_Y) and bending and torsional strength (Z_P) in adult skeletons from Europe, North America, …

A Morphometric Examination Of Cranial Vault Modification In The Middle Cumberland Region Of Central Tennessee, Gregory James Wehrman

Masters Theses

Cranial vault modification (CVM) is a physical manifestation of intersections between culture and biology. Cultural practices that apply pressure to the head during infancy result in significant reshaping of the skull and can be either intentional or unintentional. Occipital flattening is present among many Mississippian skeletal samples from the Middle Cumberland Region (MCR) of central Tennessee and is thought to be an unintentional result of childcare practices. Traditional methods for CVM classification have concentrated on visual assessment of location and means of flattening; however, this method is subjective. This thesis seeks to evaluate visual assessment of CVM through a morphometric …

Patterns In Faunal Remains At Fort St. Joseph, A French Fur Trade Post In The Western Great Lakes, Joseph Hearns

Masters Theses

Faunal studies have the potential to detect a variety of patterns in animal processing activities at an archaeological site. The spatial relationships of taphonomic mechanisms observed within the animal bone assemblage illuminate the use of space on a site as well as the patterns of waste discard. Patterns within the formation processes influencing the distribution of faunal remains serve as the basis for interpretation of animal processing behaviors. This study analyzes a sample of animal bones from Fort St. Joseph (20BE23), an eighteenth-century French fur trade post in the western Great Lakes region. This post was a hub of exchange …

Raccoon Scavenging And The Taphonomic Effects On Early Human Decomposition And Pmi Estimation, Jacob K. Smith

Masters Theses

Forensic investigators must consider the effects of numerous taphonomic variables when estimating the postmortem interval (PMI) in forensic cases, such as temperature and insect activity. Efforts to quantify the decomposition process have been made. Megyesi et al. (2005) modified the categories and stages of decomposition presented by Galloway et al. (1989), and introduced a total body scoring system that uses accumulated degree-days to estimate PMI. However, none of these systems include the potential effects of animal scavenging. Galloway et al. (1989) stated that carnivorous activity occurs mainly during advanced decomposition and mummification. Haglund et al. (1989) specifically investigated canid scavenging …

Food And Diet In The Andes: Changing Markets And Lives In Nuñoa, James A. Fisher

Masters Theses

The town of Nuñoa, located in the southern Peruvian Andes, has been the ongoing focus of anthropological research. Household surveys of diet and food security (n=69) administered during 2012 are analyzed here and compared to past studies from previous decades. Study results show clearly that the amount and diversity of new foods available in the area has increased dramatically, but also gives evidence for continued disparate access to certain types of food along class lines. Socioeconomic status had a significant negative correlation with food insecurity and poor households more frequently consumed both potatoes and other cheap, high carbohydrate foods such …

The Preservation And Persistence Of Human Dna In Soil During Cadaver Decomposition, Alexandra Leah Emmons

Masters Theses

Recent decades have seen a marked increase in the amount of research concerning the impact of human cadaveric decomposition on the grave soil environment; however, despite such advances, the fate of important biological correlates in grave soil, including human DNA, have remained relatively understudied. This study redresses the current lack of knowledge regarding the preservation and persistence of human DNA in the soil during cadaveric decomposition, with the purpose of enhancing forensic identification efforts including the detection of primary burial sites. This study assessed the preservation (i.e., presence or absence) of human nuclear and mitochondrial DNA and evaluated the quantity …

Were Neandertal Humeri Adapted For Spear Thrusting Or Throwing? A Finite Element Study, Michael Anthony Berthaume

Masters Theses

An ongoing debate concerning Neandertal ecology is whether or not they utilized long range weaponry. The anteroposteriorly expanded cross-section of Neandertal humeri have led some to argue they thrusted their weapons, while the rounder cross-section of Late Upper Paleolithic modern human humeri suggests they threw their weapons. We test the hypothesis that Neandertal humeri were built to resist strains engendered by thrusting rather than throwing using finite element models of one Neandertal, one Early Upper Paleolithic (EUP) human and three recent human humeri, representing a range of cross-sectional shapes and sizes. Electromyography and kinematic data and articulated skeletons were used …

Issues Of Commingling Within The Gold Mine Site (16ri13) Collection: Adult Human Humeri And Tibiae, Kinsey Brett Stewart

Masters Theses

Gold Mine (16RI13) is a Troyville ossuary mound site (circa CE 825) in northeastern Louisiana. Approximately 10-20% of the primary mound (Mound A) was excavated over the course of three field seasons (1978-1980), yielding a host of human skeletal remains. Extensively commingled secondary burials make up the majority of interments. The number of individuals represented within the collection (N) has been estimated at 150+ (McGimsey 2004:214), but attempts to quantitatively determine N have produced varied results. Formal analysis of the skeletal collection is complicated by the loss of provenience for many remains as well as additional post-excavation fragmentation …

Two Of A Kind: Implications Of Bilateral Directional Asymmetry On Pair Matching Of Human Limb Bones., Lauren Ashley Garroway

Masters Theses

The task of sorting and analyzing commingled remains can be daunting, depending on the degree of fragmentation, distribution, and contents of the assemblage. The Most Likely Number of Individuals (MLNI) calculation for quantifying the contents of human skeletal assemblages is dependent upon the ability to properly match bilateral elements into pairs. Anthropologists employ numerous methods to reassociate commingled remains into discrete individuals, but the guiding principle used to match sided elements is “general symmetry” (Adams and Konigsberg, 2008; Byrd, 2008). However, different skeletal elements and regions within those elements are variably responsive to a combination of environmental and genetic factors. …

An Assessment Of The Effect Of X-Ray Radiation On Dna Marker Profiles Obtained From Human Teeth, Erin Lynn Knapp

Masters Theses

X-ray radiation is known to destroy cells and damage DNA, yet human remains from forensic anthropology cases are routinely exposed to X-ray radiation as part of the documentation and evidence collection process. If X-ray radiation significantly impacts the quality of DNA extracted from human remains in forensic cases, then the validity of a resulting genetic profile is called into question. To better understand how X-ray radiation affects DNA profiles, specifically profiles consisting of short tandem repeat (STR) markers, this study followed standard forensic X-ray and genetic profiling protocols to obtain DNA profiles on individual molar teeth, before and after they …

Nonparametric Discriminant Analysis In Forensic Ancestry Estimation: An Assessment Of Utilized And Alternative Statistical Methods, David Anthony Mercer

Masters Theses

This thesis evaluates and compares the performances of four discriminant analysis techniques in forensic ancestry estimation using craniometric variables. Giles and Elliot (1962) were the first anthropologists to use discriminant analysis for ancestry estimation. They used Linear Discriminant Analysis (LDA) in an attempt to predict American White, American Black, and American Indian ancestry from craniometric variables. LDA has since been the dominant discriminant technique used for this purpose. It is the method that is exclusively used in FORDISC (Ousley and Jantz, 2005) and, until recently, was the only method applied to forensic craniometric ancestry estimation.

LDA, however, assumes the data …