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Fighting The Black Snake: The Dapl And The Case For Indigenous Environmental Stewardship, Kenny Moll Jan 2026

Fighting The Black Snake: The Dapl And The Case For Indigenous Environmental Stewardship, Kenny Moll

Student Theses 2015-Present

This thesis analyzes the current scope of environmental injustice on Native lands in the U.S. Specifically it examines The Dakota Access Pipeline (DAPL) and its impacts on the Standing Rock Sioux Tribe of North Dakota. Western colonialism and capitalism have dominated North American ecosystems since their forcible introduction hundreds of years ago, causing the commodification of natural resources and leading to injustices such as that of the “Black Snake.” However, the story of The Standing Rock Sioux Tribe’s resistance will be analyzed through the framework of Indigenous philosophy and environmental justice. Chapter 1 analyzes the implementation of the DAPL and …


A Stable Isotope Comparison Of The Biogenic Carbonate Of Mammalian Tooth Enamel From The Modern Ohio River Valley And Fort Ancient Buffalo Sites, Sara Elizabeth Slack Jan 2026

A Stable Isotope Comparison Of The Biogenic Carbonate Of Mammalian Tooth Enamel From The Modern Ohio River Valley And Fort Ancient Buffalo Sites, Sara Elizabeth Slack

Theses, Dissertations and Capstones

δ18O and δ13C values change in response to anthropogenic factors (Ghosh & Brand, 2003). Little is known about the effects of anthropogenic climate and land use change on the ecology of the Ohio River Valley. The goal of this research was to quantify the effects of European colonization on the native ecology of the region. The specific questions of this research were: (1) How have mammalian tooth enamel δ18O and δ13C compositions shifted over time within the Ohio River Valley in response to anthropogenic climate change and vegetation? (2) Are there differences …


Soil Organic Carbon And Soil Health Property Responses To Land Management Across Topographic Positions, Mia D. Makovsky Jan 2026

Soil Organic Carbon And Soil Health Property Responses To Land Management Across Topographic Positions, Mia D. Makovsky

All Graduate Theses, Dissertations, and Other Capstone Projects

uring the last ice age, ice sheets advanced and retreated across the upper Midwest, leaving behind a landscape characterized by poorly drained hummocky topography. Well-aerated soils have formed on uplands and lowlands are dominated by hydric soils. These wetlands and hydric soils have potential to store large quantities of carbon, particularly compared to the well-aerated uplands, but many have been drained and cultivated for decades. Conservation agriculture methods have emerged to protect and conserve soil health from negative effects due to cultivation.The purpose of this study is to determine how agricultural management practices and landscape properties (e.g, topographic position) affect …


Understanding Knowledge And Perceptions Of The Beef Industry On A Land-Grant University Campus, Allison E. Reaves Jan 2026

Understanding Knowledge And Perceptions Of The Beef Industry On A Land-Grant University Campus, Allison E. Reaves

Theses and Dissertations--Community & Leadership Development

A well-researched phenomenon in the agricultural industry is the effects of constant innovation coupled with an increasing divide between producer and consumer. This issue has been presented as especially prevalent within animal agriculture and the beef industry, a predominant concern considering Kentucky’s agricultural commodities. This study (n = 31) utilized a mixed-methods approach to understand the knowledge, perceptions, and behavior of beef consumers on a land-grant university campus. Methodologies included Python’s DeepFace emotion recognition, semi-structured interviews, and the JMALI agricultural literacy assessment. Findings revealed participants to be below expected agricultural literacy levels of high school graduates (M=11), with no …


Non-Invasive Detection Of Intracranial Pressure, Andrei V. Nesterenko Jan 2026

Non-Invasive Detection Of Intracranial Pressure, Andrei V. Nesterenko

Honors Undergraduate Theses

Intracranial pressure is a critical metric used when managing tumors, strokes, TBIs, hydrocephalus, and other operative conditions. Traditional methods for continuous ICP monitoring, intraparenchymal catheters, epidural transducers etc., are invasive and carry a high risk of infection. Previous attempts to create accurate, easy to use, and non-invasive ICP monitoring techniques have been unsuccessful. In this study, we investigated the utility of supraorbital and posterior auricular photoplethysmography to monitor changes in ICP during orthostatic tilt and hyperventilation, which increase and decrease ICP respectively.

Through a continuous 5-minute recording on a tilt-table we characterized SOA and PAA waveforms in 12 participants (ages …


Characterization Of The Human Thnatomicrobiome By Decomposition Stage Through Bioinformatic And Meta Data Analysis, Ashton C. Laughlin Jan 2026

Characterization Of The Human Thnatomicrobiome By Decomposition Stage Through Bioinformatic And Meta Data Analysis, Ashton C. Laughlin

Biology Theses

Estimating the postmortem interval (PMI) is one of the most crucial factors in forensic death investigations. Recent advances in forensic microbiology have led to increased interest in using the study of the human postmortem microbiome, or “thanatomicrobiome,” to improve PMI estimates. In addition to current PMI estimation techniques, microbial community succession could serve as a valuable tool in estimating PMI. Further research is needed to develop a comprehensive understanding of the human postmortem microbiome. The purpose of this study is to contribute to the expansion of this tool by reviewing the current literature and analyzing previously published data using the …


Development Of A Python Pipeline For The Inference Of Selection In Human Genomes And Applications To Adh1b*2, Aine Macdermott Jan 2026

Development Of A Python Pipeline For The Inference Of Selection In Human Genomes And Applications To Adh1b*2, Aine Macdermott

Honors Theses

Human evolutionary genomics provides an avenue to understand how genetic variation has been impacted by the environmental pressures of the past, revealing how selective pressures impacted past populations and contributed to present-day biological diversity. In this thesis, I describe the construction of a Python-based computational pipeline designed to automate and integrate multiple analyses of positive selection across worldwide population datasets, including derived allele frequency calculation, haplotype-based tests of selection, RELATE-based genealogical inference, and CLUES2-based temporal modeling. By automating file preparation, format conversion, job submission, result aggregation, model comparison, and visualization, this pipeline streamlines the data interpretation process, and shifts focus …


The Forensic Implications Of Hydrochloric Acid (Hcl) Exposure On Dna Preservation In Human Teeth, Shaelyn Lee Zimmerman Jan 2026

The Forensic Implications Of Hydrochloric Acid (Hcl) Exposure On Dna Preservation In Human Teeth, Shaelyn Lee Zimmerman

Graduate Student Theses, Dissertations, & Professional Papers

Identity is a human right, and forensic anthropological methods are often aimed at returning identity to decedents. Three main pathways are used for the identification of human remains: fingerprints, dental records, and DNA analysis. Identification efforts may be hindered when perpetrators attempt to obscure the victim’s identity. In cases where corrosive substances, such as hydrochloric acid (HCl) are used, dental comparison and fingerprinting often fail and genetic analysis becomes the best chance of achieving personal identification.

Previous studies have shown teeth are an excellent source of DNA. Large, multi-rooted teeth, such as molars, are often preferred because they contain the …


Examining Life Course Trends In Dental Tissues Measurements In Members Of The Cayo Santiago Macaque Colony, Tyler Moore Jan 2026

Examining Life Course Trends In Dental Tissues Measurements In Members Of The Cayo Santiago Macaque Colony, Tyler Moore

2026 Research Poster Competition

Dental tissue dynamics in primates are largely understood: as enamel wears with tooth use, tertiary dentin is laid down in response to cumulative (micro)traumas, compressing the internal pulp chamber and root canals. However, our knowledge of the rate and pattern of change in tissue quantities across the life course of primates remains incomplete, particularly in well-documented free-ranging populations. This study examined age- and sex-related variation in dental tissue surface area (SA) and volume (V) in a skeletal sample of rhesus macaques (Macaca mulatta) from the Cayo Santiago colony (Puerto Rico), a population with known life history data. Forty-six individuals were …


Magnesium-Based Metal Matrix Nanocomposite Implants And Nanobubble-Based Delivery Systems: Integrated Strategies For Bone Loss Treatment With Cytocompatibility Evaluation, Lucas José Martinho Bizuti Jan 2026

Magnesium-Based Metal Matrix Nanocomposite Implants And Nanobubble-Based Delivery Systems: Integrated Strategies For Bone Loss Treatment With Cytocompatibility Evaluation, Lucas José Martinho Bizuti

Honors Undergraduate Theses

This thesis intends to investigate the development of different multimodal therapeutic strategies for combating bone loss. Most specifically, this paper will emphasize the utilization of Magnesium-Based Metal Matrix Nanocomposite Implants (MMNC) and Nanobubble-Based Delivery Systems as options for future treatment focus. The effects of biodegradable magnesium implants were evaluated for cytotoxicity and cytocompatibility via Hematoxylin and Eosin, and Masson’s Trichrome staining, as well as radiological images. The Nanobubble-Based Delivery System is being developed and optimized as a delivery system to target osteoclast activity. This paper focused on optimizing experimental parameters, which include Rotational speeds for nanobubble stimulation under microgravity conditions …


Kenyon College Neuroscience Department Faculty And Staff Jan 2026

Kenyon College Neuroscience Department Faculty And Staff

Scientific Kenyon: The Neuroscience Edition

No abstract provided.


Signs Of Life: Interkingdom Communication And The Sympoietic Organism, Scott F. Gilbert Jan 2026

Signs Of Life: Interkingdom Communication And The Sympoietic Organism, Scott F. Gilbert

Biology Faculty Works

No abstract provided.


Nutritional Niche Separation Amongst Sympatric Threatened Lemurs: The Role Of Micronutrients In Food Selection And Implications For Physiological Health, Maire K. O'Malley Jan 2026

Nutritional Niche Separation Amongst Sympatric Threatened Lemurs: The Role Of Micronutrients In Food Selection And Implications For Physiological Health, Maire K. O'Malley

Graduate Research Theses & Dissertations

Madagascar’s biodiversity is heavily affected by anthropogenic change and consequently, conservation management plans need to reflect current research to protect biodiversity. Primate nutritional ecology offers valuable insights into ecology, evolution, health, habitat requirements, social behavior, and conservation management strategies. Macronutrients (fat, carbohydrates, and protein) provide consumers with energy whereas micronutrients (vitamins and minerals) are essential to metabolic processes but are frequently overlooked. This study provides a novel examination of dietary niche separation by comparing mineral consumption between three sympatric species differing in feeding strategies: 1) Grey Bamboo lemur (Hapalemur griseus), a bamboo specialist, 2) Diadema sifaka (Propithecus diadema), a folivore, …


Unintended Consequences Of Estuarine Management Within The Trajectory Of Recovery: Examples From The Chesapeake Bay, Jessica S. Turner, Fei Da, Molly M. Mitchell Jan 2026

Unintended Consequences Of Estuarine Management Within The Trajectory Of Recovery: Examples From The Chesapeake Bay, Jessica S. Turner, Fei Da, Molly M. Mitchell

OES Faculty Publications

Estuaries are vital ecosystems that support biodiversity, human populations, and economic activities such as fisheries, aquaculture, and tourism. Managing estuarine systems often involves interventions to regulate sediment and nutrient inputs with the goal of improving water quality, and subsequently the economic values of the estuary. However, these management strategies can produce unintended consequences. The Chesapeake Bay is an estuary recovering from eutrophication which provides clear case studies for these patterns. In the Chesapeake Bay, decreased sediment inputs, resulting from shoreline stabilization and watershed modifications, can impair marsh resilience to sea level rise and disrupt sediment-light-algal interactions affecting water clarity. Likewise, …


Psychological Impact Of Cultural Heritage Vr Experience Using Well-Mind Framework. (Case Study: Mahmoud Sami Palace In Mansoura)., Sara Ahmed El-Bayoumi, Hager Ahmed El-Sayed El-Ayouti, Mohamed Mohamed Shawki Abo Leila Jan 2026

Psychological Impact Of Cultural Heritage Vr Experience Using Well-Mind Framework. (Case Study: Mahmoud Sami Palace In Mansoura)., Sara Ahmed El-Bayoumi, Hager Ahmed El-Sayed El-Ayouti, Mohamed Mohamed Shawki Abo Leila

Mansoura Engineering Journal

This study examines the psychological effects of immersive virtual reality (VR) experiences designed to preserve and disseminate intangible cultural heritage. It addresses the growing challenge of declining cultural engagement and the need for innovative tools that support psychological well-being, emotional engagement, and cultural connection. A VR-based reconstruction was developed within the historic Mahmoud Sami Al-Baroudi Palace in Mansoura, Egypt, focusing on traditional Egyptian practices and oral storytelling. The evaluation employed the WELL-MIND framework alongside participant feedback to assess both structured well-being indicators and subjective user experiences. The WELL-MIND-based assessment indicated improvements in cognitive stimulation, emotional engagement, and environmental perception. In …


Homoplasy Of Maxillary Orthognathism In Derived Homo, Jared Jordan Jan 2026

Homoplasy Of Maxillary Orthognathism In Derived Homo, Jared Jordan

Graduate Studies Theses and Dissertations 2026

The evolution of the orthognathic condition in the genus Homo represents a monumental transition toward the facial morphology of modern humans from that of earlier hominins, but the phylogenetic positioning of this transformation remains poorly understood. This study investigated temporal trends in maxillary and mandibular prognathism in the genus Homo, and whether maxillary and mandibular shortening in East Asian H. erectus and later East Asian Middle Pleistocene Homo (e.g., Homo longi) represent independent derivations of orthognathic morphology, thereby making orthognathism a homoplasy in the genus Homo. Using a sample of roughly 109 cranial and mandibular specimens spanning …


Michigan Academician Volume 50, Issue 2 Jan 2026

Michigan Academician Volume 50, Issue 2

Michigan Academician

Volume 50, Issue 2 - Abstract Issue


Everyday Practices In Seed Sovereignty, Tapiwa Singini, Wu Xu Dec 2025

Everyday Practices In Seed Sovereignty, Tapiwa Singini, Wu Xu

Journal of Nonprofit Innovation

Seed sovereignty is increasingly recognized as central to debates around food security, biodiversity, and rural livelihoods, particularly in the Global South. In Malawi, seed is not merely an agricultural input but a carrier of memory, resilience, and political agency. This paper explores how smallholder farmers in rural Malawi engage in everyday acts of resistance to maintain seed sovereignty amidst expanding corporate influence, restrictive state policies, and climate variability. Based on 12 months of ethnographic fieldwork in Mchinji District, I employ a political ecology framework and peasant resistance theory to analyze the lived strategies of farmers. These include seed saving, informal …


Face Value: A Computational Approach To Subjective Impressions Of Faces, Kevin Kpankou Dec 2025

Face Value: A Computational Approach To Subjective Impressions Of Faces, Kevin Kpankou

Undergraduate Research Symposium

Various computational models of first impressions have been developed to uncover the mechanisms driving these judgments. However, the implicit notion of a singular ``human'' often overlooks meaningful individual differences in beliefs, attitudes, and associations, as well as culturally grounded group-level constructs. In this paper, we extend Cultural Consensus Theory (CCT) to estimate culturally shared beliefs about faces by incorporating latent constructs structured around interpretable facial features extracted via computer vision algorithms. We apply our model to a large-scale dataset of people’s first impressions of faces. Our approach reveals a robust mapping between facial features and culturally constructed impressions, allowing us …


Bridging The Communication Gap In Natural Disaster Information: An Exploratory Study Of Extension Service Websites, Emmanuel Chisom Okolo, Rafael Landaverde, Laxmi Prasanna Kandi, Kim E. Dooley, Sarah Mccord, Kelsi Opat, Abdul Saboor Rahmany Dec 2025

Bridging The Communication Gap In Natural Disaster Information: An Exploratory Study Of Extension Service Websites, Emmanuel Chisom Okolo, Rafael Landaverde, Laxmi Prasanna Kandi, Kim E. Dooley, Sarah Mccord, Kelsi Opat, Abdul Saboor Rahmany

Journal of Human Sciences and Extension

Natural disasters are expected to become more frequent and severe, increasing the need for effective disaster management. Governments are emphasizing community awareness and local self-reliance, with the Cooperative Extension Services (CES) playing a vital role in distributing science-based knowledge and supporting preparedness efforts. This qualitative content analysis (QCA), guided by Framing Theory, examined how CES disseminated weather-related disaster preparedness and response information from 2003 to 2023 on Extension Service websites. We explored: (1) the frequency of information on natural disaster preparedness and response published on Extension Service websites, (2) dissemination methods, and (3) the quality of disaster preparedness and response …


The Genetic And Environmental Determinants Of Stress Resilience Across Model Systems, Carson Len Stacy Dec 2025

The Genetic And Environmental Determinants Of Stress Resilience Across Model Systems, Carson Len Stacy

Graduate Theses and Dissertations

Survival in fluctuating environments demands that organisms effectively anticipate and respond to future challenges. This capacity is shaped by both genetic background and environmental context. In this dissertation, I apply a population aware lens to explore how genetic diversity and environmental conditions intersect to shape stress survival. Integrating functional genomics and transcriptomics in Saccharomyces cerevisiae (brewer’s yeast) and a vertebrate (common canary) system, I dissect gene-by-environment (GE) interactions that underpin resilience. First, I move beyond a single reference genome by using a pan-genomic CRISPR knockout screen to assess osmotic stress survival across diverse S. cerevisiae isolates. This analysis reveals a …


Applicability Of Cementochronology To Estimate Season-Of-Death In Humans: Insights From Modern Documented Collections, Olga Ibarra-Sanchez Dec 2025

Applicability Of Cementochronology To Estimate Season-Of-Death In Humans: Insights From Modern Documented Collections, Olga Ibarra-Sanchez

Theses and Dissertations

Dental cementum is characterized by lifelong deposition of alternating opaque annuli in fall/winter and translucent bands in spring/summer. This study aims to test the applicability of cementochronology to estimate season-of-death, by observing the properties of the last layer, with direct implications for forensic anthropology and bioarchaeology. The sample includes canine teeth from 146 adults (84 males, 62 females), age-at-death ranging from 20-97 years (mean=61.7 years, SD=18.6 years), from two contemporary skeletal collections. Of these individuals, 78 (53.4%) died in spring/summer and 68 (46.6%) died in fall/winter. Overall accuracy was low at 64.4% (94/146). Accuracy was higher for spring/summer deaths 100.0% …


Mountain Communities During A Time Of War: A Case Study Of The Hutsul Region In The Carpathian Mountains Of Ukraine, Pavlo Rybaruk Dec 2025

Mountain Communities During A Time Of War: A Case Study Of The Hutsul Region In The Carpathian Mountains Of Ukraine, Pavlo Rybaruk

Electronic Theses and Dissertations

This thesis investigates the ethno-ecological technologies employed by the Hutsul people within the highland agrarian economy of the Carpathian Mountains. Over centuries, the Hutsuls have developed ethno-ecological technologies that maintain ecological integrity while supporting community livelihoods.

The study addresses three primary research questions: What are the most important ethno-ecological technologies of the Hutsul highland economy? How might these traditional ethno-ecological practices be applied to economic, agricultural, and tourism development in the Hutsul region? How might these traditional ethno-ecological practices be combined with contemporary approaches to encourage sustainable development in the region?

The research explores the devastating impact of the Russian …


Testing Microscopic Approaches For Cementochronology In The 21st Century Identified Skeletal Collection, Portugal, Amando Luis Montalvo Jr. Dec 2025

Testing Microscopic Approaches For Cementochronology In The 21st Century Identified Skeletal Collection, Portugal, Amando Luis Montalvo Jr.

Theses and Dissertations

Age-at-death estimation is a key component to the creation of a biological profile in forensic anthropology. Acellular extrinsic fiber cementum annulations have been shown to correlate with chronological age. Cementochronology examines this correlation through the sum of the alternating translucent bands and opaque annuli, and the age of eruption of a tooth. While several microscopy techniques have been used, there is no consensus on the most optimal. This study will assess the reliability, precision and accuracy of three microscopy techniques: Brightfield (BF), Phase Contrast (PC) and Differential Interference Contrast (DIC). PC was the most reliable (rTEM= 10.4%), the most precise …


Decomposition Processes And Insect Indicators In Forensic Investigations, Eli Taylor Dec 2025

Decomposition Processes And Insect Indicators In Forensic Investigations, Eli Taylor

University Honors Theses

Insects play an essential biological and ecological role in human life, and their predictable relationship with decomposing remains has positioned them as a cornerstone of modern forensic science. Since the early 20th century, forensic entomology has provided critical evidence for estimating the postmortem interval (PMI), relying on patterns of colonization, species succession, and insect developmental timelines. Accurate PMI estimations are vital to medicolegal investigations, influencing the interpretation of biological evidence, guiding resource allocation, and informing determinations of cause and manner of death. However, insect activity is profoundly shaped by environmental and ecological variables, including temperature, humidity, seasonal shifts, and geographic …


Transdisciplinary Perspectives On Ai: The Fourth Annual Conference Of The European Culture And Technology Laboratory, Connell Vaughan, Ioana Madalina Moldovan, Silivan Moldovan, Noel Fitzpatrick Nov 2025

Transdisciplinary Perspectives On Ai: The Fourth Annual Conference Of The European Culture And Technology Laboratory, Connell Vaughan, Ioana Madalina Moldovan, Silivan Moldovan, Noel Fitzpatrick

Books/Book Chapters

The fourth annual conference of the ECT Lab+ was hosted by Technical University of Cluj-Napoca over two days in October 2024 at the Cluj Innovation Park. The conference brought together experts from the Arts, Humanities, Social Sciences, Technology, and other fields to discuss and reflect on the advent of Artificial Intelligence and how the associated technologies are transforming how we live, work and study. Under the title Transdisciplinary perspectives on AI: Alternative Histories, Current Practices and Possible Futures the conference moved beyond simplistic technophila and technophobia to consider whether we can co-evolve with these new technologies which combine machine learning …


Immunological Surveillance Against Cancer Across Mammals, Orsolya Vincze, Piotr Minias, Alexandre Corthay, Fernando Colchero, Jean-François Lemaître, Louise Maille, Tamás Malkócs, Justus Hagemann, Dalia A. Conde, Samuel Pavard, Antoine M. Dujon, Beata Ujvari, Frédéric Thomas, Amy M. Boddy, Carlo C. Maley, Damien Chevallier, Tuul Sepp, Thomas Pradeu, Mathieu Giraudeau Nov 2025

Immunological Surveillance Against Cancer Across Mammals, Orsolya Vincze, Piotr Minias, Alexandre Corthay, Fernando Colchero, Jean-François Lemaître, Louise Maille, Tamás Malkócs, Justus Hagemann, Dalia A. Conde, Samuel Pavard, Antoine M. Dujon, Beata Ujvari, Frédéric Thomas, Amy M. Boddy, Carlo C. Maley, Damien Chevallier, Tuul Sepp, Thomas Pradeu, Mathieu Giraudeau

Presidential Fellows Articles and Research

Contrary to expectations based on their higher cell numbers, larger and longer-lived species do not face dramatically increased risk of cancer. This strongly suggests that evolution has fashioned natural cancer resistance mechanisms, yet our knowledge remains limited on what these mechanisms might be. The cancer immunological surveillance hypothesis, proposed by Burnet and Thomas in the 1950s, highlights immunity as a key factor determining species-specific cancer resistance. Here we address the original, evolutionary interpretation of this hypothesis by investigating the relationship between cancer mortality risk and markers of efficient antigen presentation. Our results show that the expansion of the MHC class …


A Bioarchaeological Study Of The Individuals From The Városfalva Burial Mound In Transylvania, Romania (15th-19th Century), Vanessa C. Reeves Nov 2025

A Bioarchaeological Study Of The Individuals From The Városfalva Burial Mound In Transylvania, Romania (15th-19th Century), Vanessa C. Reeves

USF Tampa Graduate Theses and Dissertations

This study explores the lives and deaths of the Szekler people recovered from a burial mound in the Transylvanian village of Városfalva. The Transylvanian plateau is located in present day Romania, and is protected on the east and the south by the Carpathian Mountains. The Szekler people arrived in this area around 1000 CE, and were a nomadic group originating in the Asian Steppes region who later intermarried with various migratory groups as they moved across the Eurasian plains. The Szeklers eventually banded together with the proto-Hungarian Magyar peoples and settled in the Carpathian Basin, the easternmost frontier of the …


Michigan Academician Volume 50, Issue 1 Nov 2025

Michigan Academician Volume 50, Issue 1

Michigan Academician

2025 Michigan Academy Conference abstracts.


‘Earth System Engineers’ And The Cumulative Impact Of Organisms In Deep Time, Simon A. F. Darroch, Michelle M. Casey, Alison T. Cribb, Amanda E. Bates, Matthew E. Clapham, Dori L. Contreras, Matthew Craffey, Ivo A. P. Duijnstee, William Gearty, Nicholas J. Gotelli, Marcus J. Hamilton, Riley F. Hayes, Pincelli M. Hull, Daniel E. Ibarra, V. A. Korasidis, Jaemin Lee, Cindy V. Looy, Tyler R. Lyson, Benjamin Muddiman, Peter D. Roopnarine, Alex B. Shupinski, Felisa A. Smith, Alycia L. Stigall, Catalina P. Tomé, Katherine A. Turk, Amelia Villaseñor, Peter J. Wagner, Steve C. Wang, S. Kathleen Lyons Nov 2025

‘Earth System Engineers’ And The Cumulative Impact Of Organisms In Deep Time, Simon A. F. Darroch, Michelle M. Casey, Alison T. Cribb, Amanda E. Bates, Matthew E. Clapham, Dori L. Contreras, Matthew Craffey, Ivo A. P. Duijnstee, William Gearty, Nicholas J. Gotelli, Marcus J. Hamilton, Riley F. Hayes, Pincelli M. Hull, Daniel E. Ibarra, V. A. Korasidis, Jaemin Lee, Cindy V. Looy, Tyler R. Lyson, Benjamin Muddiman, Peter D. Roopnarine, Alex B. Shupinski, Felisa A. Smith, Alycia L. Stigall, Catalina P. Tomé, Katherine A. Turk, Amelia Villaseñor, Peter J. Wagner, Steve C. Wang, S. Kathleen Lyons

College of Life Sciences Faculty Papers

Understanding the role of humans as 'ecosystem engineers' requires a deep-time perspective rooted in evolutionary history and the fossil record. However, no conceptual framework exists for studying the rise of ecosystem engineering in deep time, requiring us to consider effects that fall outside the scope of traditional definitions. Here, we present a new framework applicable to both modern and ancient engineering-type effects. We propose a new term - 'Earth system engineering' - to describe biological processes that alter the structure and function of planetary spheres, and which combines core tenets of ecosystem engineering, niche construction, and legacy effects. We illustrate …