Digital Commons Network^™

The Use Of An In Chemico Digestibility Assay To Reduce The In Vivo Fish Bioaccumulation Testing Of Nanomaterials, Craig Mchardy, Nathaniel J. Clark, Robert Clough, Richard D. Handy

School of Biological and Marine Sciences

Currently for engineered nanomaterials (ENMs), there are no alternatives to bioaccumulation testing in fish as prescribed by OECD TG 305. New approaches are being sought, in order to reduce the numbers of animals used and address the ethical concerns associated with the use of vertebrates in such testing. This study aimed to demonstrate the value of an alternative method — the in chemico digestibility assay — as a tool to assess the bioaccumulation potential of ENMs. Titanium dioxide ENMs, or their equivalent bulk form, were incorporated onto a commercial fish diet and the fish digestion process was simulated in vitro …

Carbon Sequestration Through Conservation Tillage In Sandy Soils Of Arid And Semi-Arid Climates: A Meta-Analysis, Samantha Lynn Colunga, Leila Wahab, Alejandro Fierro-Cabo, Engil Isadora Pujol Pereira

School of Earth, Environmental, & Marine Sciences Faculty Publications

Highlights

• Under CST, SOC increased by 12.74 ± 1.46 % in sandy soils with 5 of the 6 practices contributing to this rise.
• SOC increased up to 15 years post-CST conversion, but more research is needed to assess long-term effects.
• SOC increased by 13% in soils with over 56% sand content under CST.
• SOC increased by 15% in the 0-20 cm depth under CST, with no significant increase at greater depths.
• SOC increased under CST when nitrogen was applied at rates up to 100 kg N ha⁻¹.

Abstract

This meta-analysis assessed soil organic carbon (SOC) percent changes in sandy soils, …

Assessing Inter-Organizational Collaboration Within The Transboundary Network Governing The Conservation Of Southern Resident Killer Whales, Dane Pedersen, Owen Temby, Antonia Sohns, Evelyn Roozee, Gordon M. Hickey

School of Earth, Environmental, & Marine Sciences Faculty Publications

The Southern Resident Killer Whale (SRKW) is an endangered and charismatic species whose home range spans the Salish Sea, an ecosystem that extends across the Canada-US border. Conserving and recovering the SRKW represents a high-profile transboundary governance challenge that depends heavily on collaboration between a wide range of organizations. To better understand the factors affecting transboundary SRKW governance in the Salish Sea, this study applies a multi-dimensional trust, control, perceived risk framework to assess the inter-organizational architecture supporting collaboration. The analysis is based on key informant interviews (n=32) and surveys (n=35) conducted with policy actors working for different organizations involved …

Nesting Population Trend Of The Leatherback Sea Turtle In Bocas Del Toro Province And Comarca Ngäbe-Buglé, Panama For The Period 2002–2022, Sonia Gutiérrez Parejo, Susan E. Piacenza, Raúl García, Cristina Ordóñez, Roldán A. Valverde

School of Earth, Environmental, & Marine Sciences Faculty Publications

Sea turtle biologists have made sustained efforts to understand the global status of leatherback sea turtle populations. However, despite progress in assessments, demographics, and ecology, key uncertainties persist in tracking leatherback population trends. Trend analyses have historically focused on nesting beaches, with nest counts providing a widely used index for population abundance. Here, we analysed 20 years of annual nest abundance at four main nesting beaches (Soropta, Bluff, Playa Larga and Chiriquí) in Bocas del Toro province and the Comarca Ngäbe-Buglé, Panama, which constitute the largest nesting leatherback sea turtle population in Central America. We conducted daily nest counts during …

Nurturing The Event: A Trauma-Informed Psychosocial Analysis Of Conversions To Christianity And Desistance From Crime, Alex Beaumont

School of Law, Humanities and Social Sciences Theses

The aim of this thesis is to demonstrate the role prison chaplaincy and faith-based organisations play in supporting new Christian converts across HMPPS establishments. Drawing on research data from 11 in-depth narrative interviews with formerly incarcerated individuals, many of whom were long-term desisters or still in the desistance process (18 months post-release), this thesis provides a psychoanalytic interpretation of the relationship between early childhood development, traumatic events, and spiritual transformations in prison. Data was gathered using Hollway and Jefferson’s (2001) Free Association Narrative Interview Method (FANIM), which applies psychoanalytic principles to explore subjectivity beyond surface-level descriptions of self and identity. …

Safe Space: A Novel And Accompanying Critical Study Into The Participatory Culture In Fandom And A Historiographic Approach To The Fragmentation Of Popular Culture In Select Novels By Kurt Vonnegut And Thomas Pynchon., Edward Whitfield

School of Law, Humanities and Social Sciences Theses

This research is submitted as both a novel and supplementary critical study. It explores the dynamic interplay between media consumers and content creators within the context of contemporary online critical discourse. The study is anchored by the novel Safe Space, a metamodern science fiction novel that explores the tension between progressive and orthodox ideologies within Anglo-American science fiction fandom – a symbolic battle in the Culture Wars.The investigation uses a historiographic, long durée (or long term) approach to test the hypothesis that periods of cultural anxiety are related to a loss of confidence in great hegemons. The research interrogates the …

‘At Least I Wasn't In An Inner-City Flat With A Partner I Hated’: An Auto/Biographical Study Of Reflections On Well-Being By 35-65 Year Olds In Cornwall Following The Covid-19 Pandemic, Cheralyn May

School of Law, Humanities and Social Sciences Theses

The effects of the Covid-19 pandemic on mental health have been considerably researched since its start in 2019, by researchers from a range of disciplines around the world. This sociological study (using insights from social and positive psychology) contributes to our knowledge of the pandemic by using qualitative methods – fourteen semi-structured interviews and researcher auto/biography to investigate the mental health experiences of middle-aged, single adults living in Cornwall in the UK during the pandemic. In the pandemic literature, this is an under-researched, and therefore potentially less understood, group and location. The data was analysed using a combination of the …

Transient Lives: Trans & Non-Binary People’S Encounters With The Harms Of Work, Siggi Auerbach

School of Law, Humanities and Social Sciences Theses

This ethnographic criminological research aimed to address several theoretical gaps in the existing literature surrounding trans people, vulnerability, and victimisation. The overarching objective of this study was to offer a revised account of the harms trans people encounter in relation to their work via a new theoretical framework which is informed by ultra-realist criminology, critical hate studies. The theoretical framework was informed by contemporary criminologies of the harms of work, as opposed to the harms the institution of work is argued to inflict upon intersectional aspects of the individual’s social identity. This thesis aimed to reconceptualise the harms trans workers …

Reassembling Anti-Oppressive Teaching Practices In Professionally Qualifying Youth And Community Work Education, Christine Smith

School of Law, Humanities and Social Sciences Theses

New and continuing formations of oppression remains a contemporary 21st Century challenge compounded by a fracturing of democratic structures that give rise to intolerance of difference and threaten social bonds. The big questions about the type of society we want to live in, what it means to be human, and the role of education are questions that are increasingly alienated from everyday lived experiences and a collective commitment to shape a fairer and more socially just world. Thus, the scale of challenges underscores a need to think differently about how Anti-Oppressive Practice (AOP) in professionally qualifying youth and community education …

Circulating Medium- And Long-Chain Acylcarnitines Are Associated With Plasma P-Tau181 In Cognitively Normal Older Adults, Tahmida Sharmin, Pratishtha Chatterjee, James D. Doecke, Nicholas J. Ashton, Kevin Huynh, Steve Pedrini, Hamid R. Sohrabi, Benjamin Heng, Shaun Eslick, Henrik Zetterberg, Kaj Blennow, Manohar Garg, Ralph N. Martins

Research outputs 2022 to 2026

Alzheimer's disease (AD) pathogenesis involves dysregulation in diverse biochemical processes. Nevertheless, plasma tau phosphorylated at threonine 181 (P-tau181), a recognised AD biomarker, has been described to reflect early-stage cortical amyloid-β (Aβ) deposition in cognitively normal (CN) adults. Therefore, identifying changes in plasma metabolites associated with plasma P-tau181 at the pre-clinical stage may provide insights into underlying biochemical mechanisms to better understand initial AD pathogenesis. In the current study, plasma P-tau181, quantified via single molecule array (Simoa) technology, and plasma metabolites, quantified via targeted-mass spectrometry, were investigated for associations in CN older adults and upon stratification by positron emission tomography (PET)-Aβ …

Long-Term Trends In Brook Trout Production And Large Wood In West Virginia Headwater Streams, Halden D. Edwards

Graduate Theses, Dissertations, and Problem Reports (ETD)

Projects which monitor long-term trends in ecosystems are uncommon but extremely important in the management of fish and wildlife populations. By assessing the health of a population or community over multiple temporal scales, these projects provide true insight into population success that cannot be elucidated through short-term studies. Long-term projects are also instrumental in assessing the effects of disturbance events as they provide valuable baseline information which can be compared to data collected post-disturbance. Even more importantly, long-term studies can help identify crucial changes in the health and success of imperiled and invaluable species to improve and focus conservation efforts. …

Dynamically Scaling Biomimetic Robots Through Parallel Viscoelastic Actuators, Foster Olaf Holmquist

Graduate Theses, Dissertations, and Problem Reports (ETD)

Robots provide a unique proving ground for testing scientists’ understanding of neuromuscular systems. Synergistically, mimicking biological control laws and mechanics could offer robotics the robust and adaptive locomotion of animals. Previous work has utilized the wealth of research on insect biomechanics to develop scaled robotic models but doing so presented a problem: while these robots’ larger scale has simplified manufacturing, the scale has also shifted its mechanics from those of the modeled organisms. While animals walk, forces are generated that describe their mechanics and influence motor control. The musculoskeletal structure and stretch of muscles result in viscous and elastic forces, …

The Effect Of Cerebellar Feedback On The Spatial Processing Of Conspecific Signals In The Electrosensory System, Dakota Ray Miller

Graduate Theses, Dissertations, and Problem Reports (ETD)

Animals have evolved sensory systems to help decipher important environmental signals that are vital for their survival. Feedback pathways are necessary to allow these signals to stand out in a noisy background, enabling the animal to focus on them more effectively. The electrosensory system of Apteronotus leptorhynchus allows the fish to sense the modulations caused by other conspecifics to allow for proper responses during social interactions. Electroreceptors detect these EODs, and afferent nerves project these signals to the ELL, where electrosensory information is projected to other parts of the brain. Cerebellar feedback to the ELL allows the suppression of lower …

Vital Rates And Nest Site Selection Of Merriam’S Wild Turkeys (Meleagris Gallopavo Merriami) In South-Central, South Dakota, Luke N. Mccray

Graduate Theses, Dissertations, and Problem Reports (ETD)

Wild turkeys (Meleagris gallopavo) are an economically and culturally significantly game species throughout much of the United States. Within South Dakota, spring turkey hunting generates approximately $20 million in expenditures annually to local economies. Merriam’s wild turkeys (Meleagris gallopavo meriami) were reintroduced to the Missouri River Breaks of Gregory County, South Dakota, USA, between the 1950s and 1980s, and was one of the most successful reintroductions in the state. However, a recent decline in gobbler harvest suggests a potential decline in this population. To estimate survival and reproduction and evaluate nest site selection, we captured 121 …

Comparative Analysis Of Electrode Encapsulation Reliability: Planar Vs. Thermoformed Interdigitated Neural Electrodes In Biomedical Engineering, Tatum Peyerl

Graduate Theses, Dissertations, and Problem Reports (ETD)

Durable dielectric encapsulation is crucial for the long-term function of implantable neural electrodes; however, the reliability of curved, thermoformed coatings remains underexplored. This study addresses that gap by comparing planar (non-thermoformed) and thermoformed interdigitated neural electrodes (IDEs) encapsulated in Polyimide-2611. Both device types underwent accelerated in vitro aging in phosphate‑buffered saline (PBS) at 67 °C for approximately 91 days, simulating two years of physiological exposure. Post-accelerated aging evaluation included electrochemical impedance spectroscopy (EIS) from 0.1 Hz to 100 kHz to monitor moisture‑induced leakage, and high‑voltage breakdown testing under saline immersion to assess dielectric strength. After aging, all electrodes maintained impedance …

Evaluating Osmia Cornifrons As An Effective Pollinator For Agricultural Crops: An Analysis Of Hair Morphology And Sex-Ratio Distorting Bacterium, Wolbachia, Nellie Heitzman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Effective pollination relies not only on the presence of pollinators but also on their morphological adaptations and reproductive biology. In this study, I investigated both the external hair morphology and the intracellular bacterial infection status of Osmia cornifrons, a solitary bee species increasingly used in orchard pollination due to its efficiency and early seasonal activity. Using Scanning Electron Microscopy (SEM), I characterized the distribution and structure of two major hair types present on the bee's body: branched and unbranched. Branched hairs were found widely distributed across the head, thorax, dorsal abdomen, and legs, and appeared to function primarily in incidental …

Individual And Collective Properties Of Tunable Photochemical Belousov-Zhabotinsky Micro-Reactors, Kudakwashe Benedict Shumba

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cell-like model chemical systems are powerful tools that can be used to explore the role of intercellular coupling on population level behaviors in communities of biological cells. Firstly, we present a new method for fabricating such micro-reactors using the photosensitive Belousov–Zhabotinsky (BZ) reaction system employed in silica microparticles. These BZ micro-reactors have a tunable response to photochemical coupling, varying from a fully excitatory response to a fully inhibitory response. Their response can be tuned through variations in either the reactive mixture or, on an individual micro-reactor level, by changes in the synthesis temperature used during the fabrication of the silica …

Demonstrating The Potential Of Biophilic Design, Sustainable Site Initiatives, And Regenerative Landscape Design To Transform Neglected And Underutilized Spaces Into Vibrant, Eco-Friendly Hubs In Mckeesport Pennsylvania., Chinweuba Stephen Kikanme

Graduate Theses, Dissertations, and Problem Reports (ETD)

McKeesport is a city located along Monongahela and Youghiogheny rivers in Allegheny County, Pennsylvania, about 13 miles southeast of Pittsburgh. It is part of the River metropolitan area. McKeesport, once a thriving center of steel production, is now facing significant challenges associated with industrial decline, urban blight, flood hazard, population decline, brownfield sites and environmental degradation. However, the transformation of neglected spaces within the city into sustainable and vibrant urban hubs offers a powerful opportunity for revitalization. By incorporating natural elements such as green roofs, urban agriculture, and native plant restoration, this project seeks to create spaces that not only …

P23h Rhodopsin Accumulation Disrupts Synaptic Protein Levels In Rod Photoreceptors, Samantha Thompson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Rod photoreceptors are specialized neurons located in the retina, the neural tissue that lines the back of the eye. Rod photoreceptors are necessary for dim light and peripheral vision through the photoactivation rhodopsin (Rho). Rho is synthesized in the inner segment of rods before being unidirectionally trafficked to the outer segment. In diseases such as retinitis pigmentosa (RP), Rho trafficking can be disrupted, leading to progressive rod cell death. In many cases of RP, Rho is mislocalized to the rod photoreceptor synapse (“spherule”). The impact of Rho mislocalization on spherule structure and protein organization is poorly understood. We hypothesize that …

Introduction Of Polar Functional Groups To Pyridinedipyrrolide Zirconium Photosensitizers Through Post-Synthetic Modifications, Marisa Nicole Tordella

Graduate Theses, Dissertations, and Problem Reports (ETD)

Photosensitizers are vital components to applications such as photoredox catalysis, photodynamic therapy, and various avenues of solar energy production. The abilities of transition metal photosensitizers containing precious metals have been well studied over the years. However, because of the growing scarcity of these metals, there has been a shift in finding more earth abundant alternatives. To help fill this gap in the literature, the Milsmann group has developed and studied the photophysical properties of Zr(IV) complexes with various ligand systems. Due to the electron deficient metal center, these complexes exhibit ligand-to-metal charge transfer (LMCT), unlike the metal-to-ligand charge transfer commonly …

Investigating The Physiological, Metabolomic, And Transcriptomic Changes In Response To Telomerase Deletion In Saccharomyces Cerevisiae, Taizina Momtareen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Telomerase is an enzyme found in rapidly dividing cells that maintains chromosome ends and prevents the loss of genetic information during cell division. When telomerase is inactive, cells gradually lose their telomeres and eventually stop dividing. In yeast, a rare subset of cells can bypass this growth arrest by switching to a recombination-based mechanism to maintain telomeres. Therefore, yeast provides a powerful system to study this adaptation, as telomerase-deficient strains can generate 'survivors' that mimic the Alternative Lengthening of Telomeres (ALT) pathway observed in some human tumors. In this work, my goal was to examine how a telomerase-null (TLC1 …

Investigating The Biology, Hypovirulence, And Pathogenicity Of Three Canker-Causing Phytopathogenic Fungi In The Cryphonectriaceae And Cytosporaceae On American Chestnut (Castanea Dentata) And Oaks (Quercus Spp.) In The Eastern U.S., Danielle N. Mikolajewski

Graduate Theses, Dissertations, and Problem Reports (ETD)

American chestnut (Castanea dentata) and various oak species (Quercus spp.) are impacted by several economically important canker pathogens in the fungal order Diaporthales, namely Cryphonectria parasitica and Endothia gyrosa (Cryphonectriaceae). Cytospora canker caused by several closely related fungi in the fungal genera Cytospora and Valsa (Cytosporaceae) have also been implicated in causing canker diseases of Quercus and Castanea in Asia, Europe and North America. The impacts of C. parasitica on American chestnut have been exhaustively studied and it’s impacts on various oak hosts have also been broadly investigated and reported. Endothia gyrosa has …

Rare Earth Element Recovery From Acid Mine Drainage Using Ion Exchange And Selective Precipitation Processes, Paubla Andrea Gallego Lopez

Graduate Theses, Dissertations, and Problem Reports (ETD)

Rare earth elements (REEs) are used in high-tech applications due to their electromagnetic and optical properties. As global demand for REEs surges, the limitation of primary mineral deposits has increased interest in alternative sources. One such source is acid mine drainage (AMD), which, although typically low in REE concentration, offers a promising avenue for recovery. Among the emerging recovery methods, ion exchange has shown promise due to its effectiveness at low concentrations and lower operational cost than conventional techniques such as acid leaching and solvent extraction.

This research focused on developing a recovery process by combining ion exchange with selective …

Characterization Of A Descending Neuron That Modulates Flight Performance And Provides Input Onto A Flight-Related Predictive Motor Circuit, Andisheh Balouchi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Descending neurons (DNs) play a critical role in sensorimotor integration by relaying motor information to the ventral nerve cord (VNC). Within the VNC, local interneurons, other DNs, and ascending neurons (ANs) make circuits with sensory and motor neurons to modify flies’ behavior. One important AN pair in Drosophila Melanogaster is mesothoracic ascending histaminergic neurons (MsAHNs), which are known to convey predictive wing motor signals to the brain. DNg32 is the primary upstream synaptic partner of MsAHNs, integrating DNg32 input with other inputs to generate predictive motor signals. The goals of this study were to 1) map the synaptic connectivity of …

Simulated Slot Machine Gambling In Relation To Sign-Tracking, Polina Krom

Graduate Theses, Dissertations, and Problem Reports (ETD)

The propensity to attribute incentive salience to reward-related cues, or sign-tracking (ST) has been linked to addiction in animal models and some initial human data. The current study explores the role of sign-tracking (ST), as a potential risk factor for problematic slot machine gambling, which abundantly features audiovisual reward-related cues, henceforth sensory features. A sample of healthy participants without gambling problems (n = 30) completed a Pavlovian-to-Instrumental Transfer (PIT) paradigm to assess ST propensity and played on a realistic slot machine simulator consisting of two versions: with sensory features (SF+) and without (SF-). Each game version had fixed bet sizes, …

Exploration Of Coping And Mental Health In West Virginia Farmers, Jodi Meadows Richmond

Graduate Theses, Dissertations, and Problem Reports (ETD)

Compared nationally, West Virginia currently ranks lowest for life expectancy, highest for drug related deaths and 35^th for access to adequate health (WV DHHR Organization Assessment & Strategic Plan, 2022). The state also ranks first in the nation for depression with one in four adults experiencing some form of depressive condition each year (CDC, 2020). The rurality of the state may limit social interaction and availability of medical treatment facilities (Brew et al., 2016).

The situation is even more dire for those in farming-related occupations. Farmers often struggle with management stress, utilizing appropriate coping strategies, and accessing mental health …

Gestational Age–Specific Prevalence Of Preeclampsia Among Pregnant Women In Ghana: A Hospital-Based Retrospective Observational Study, Wina Ivy Ofori Boadu, Enoch Odame Anto, Akua Benewaah Asamoah, Ezekiel Ansah, Godfred Yawson Scott, Emmanuel Ekow Korsah, Joseph Frimpong, Valentine Christian Kodzo Tsatsu Tamakloe, Michael Nyantakyi, Agartha Odame Anto, Emmanuel Timmy Donkoh, Kwame Ofori Boadu, Richard Vikpebah Duneeh, Frederick Ayensu, Christian Obirikorang

Research outputs 2022 to 2026

Background: Preeclampsia is responsible for a significant rate of maternal morbidity and mortality worldwide. Gestational age as a risk factor has a significant impact on fetal outcomes in pregnancies affected by preeclampsia. However, to our knowledge, no study has identified the gestational age–specific prevalence of preeclampsia in Ghana. Thus, this study ascertained the gestational age–specific prevalence of preeclampsia as well as its associated factors. Methods: A hospital-based retrospective observational study was conducted by reviewing data collected from the maternal birth register on 619 pregnant women who delivered at the facility from 1st January 2021 to 31st December 2021. Results: Out …

Investigating Protective And Risk Factors And Predictive Insights For Aboriginal Perinatal Mental Health: Explainable Artificial Intelligence Approach, Guanjin Wang, Hachem Bennamoun, Wai Hang Kwok, Jenny Paola Ortega Quimbayo, Bridgette Kelly, Trish Ratajczak, Rhonda Marriott, Roz Walker, Jayne Kotz

Research outputs 2022 to 2026

Background: Perinatal depression and anxiety significantly impact maternal and infant health, potentially leading to severe outcomes like preterm birth and suicide. Aboriginal women, despite their resilience, face elevated risks due to the long-term effects of colonization and cultural disruption. The Baby Coming You Ready (BCYR) model of care, centered on a digitized, holistic, strengths-based assessment, was co-designed to address these challenges. The successful BCYR pilot demonstrated its ability to replace traditional risk-based screens. However, some health professionals still overrely on psychological risk scores, often overlooking the contextual circumstances of Aboriginal mothers, their cultural strengths, and mitigating protective factors. This highlights …

Cruciferous Vegetables Improve Glycaemic Control Compared To Root/Squash Vegetables In A Randomized, Controlled, Crossover Trial: The Vegetables For Vascular Health (Vessel) Study, Emma L. Connolly, Alex H. Liu, Richard J. Woodman, Armaghan Shafaei, Lisa G. Wood, Richard Mithen, Anthony P. James, Carl J. Schultz, Seng Khee Gan, Catherine P. Bondonno, Joshua R. Lewis, Jonathan M. Hodgson, Lauren C. Blekkenhorst

Research outputs 2022 to 2026

Aims: Higher cruciferous vegetable (e.g., broccoli) intake is associated with lower risk of type 2 diabetes and cardiovascular disease, but limited causal evidence exists. We investigated if cruciferous vegetable intake improved glycaemic control compared to root/squash vegetables in non-diabetic adults with elevated blood pressure. Materials and Methods: This randomized, controlled, crossover trial consisted of two 2-week dietary interventions (300 g/day cruciferous [active] and root/squash [control] soups with standardized lunch/dinner meals) separated by a 2-week washout. Participants were blinded to the intervention allocation. Glycaemic measures were a pre-specified secondary outcome. Flash glucose monitoring measured interstitial glucose every 15-min throughout both interventions. …

Half Of The Habitat Of Australia's Highly Imperilled Narrow-Range Species Is Outside Protected Areas, Michelle Ward, Martine Maron, Jeremy S. Simmonds, Mark Lintermans, Nick S. Whiterod, David G. Chapple, Hugh P. Possingham, Sarah M. Legge, Rachael V. Gallagher, Brendan A. Wintle, Samantha Vine, Kita Ashman, Conrad J. Hoskin, Stephen T. Garnett, John C.Z. Woinarski, Ben C. Scheele, Cerin Loane, James A. Fitzsimons, Romola R. Stewart, Ayesha I.T. Tulloch, Isabel T. Hyman, Kate Pearce, Allan H. Burbidge, Tarmo A. Raadik, Gerald Kuchling, Arthur Georges

Research outputs 2022 to 2026

Globally, species with small distributions face disproportionate extinction risk, with the impacts of land use change more likely to have catastrophic consequences. Identifying, protecting and managing sites where such species occur is essential for minimising their extinction risk. Yet across Australia, efforts to protect and manage such species' habitats have hitherto been insufficient. Here, we present an example of an analytical and interpretive pathway for the conservation of such species, for a continental-scale case study. We identified 305 Critically Endangered species that have narrow ranges (<20,000 km2), and are distributed in fewer than six discrete patches. We refined existing species' habitat maps with advice from 18 experts via a modified Delphi approach. We assessed how much of each species' habitat is outside protected areas and considered to have agricultural capability, potentially elevating risk of conversion. We identified ∼85,000 km2 of habitat (∼1% of Australia) for these 305 species that must receive protection and management if the nation is going to meet its commitment to halt new extinctions. Approximately half of this habitat is outside the protected area estate, including the entire distribution of 39 species. Approximately 55% of habitat outside of protected areas had at least some agricultural capability. Protecting and managing the habitats of these narrow-range species should be a high priority in state and national conservation policy. Our case study serves as a template for the identification of important habitat for threatened species and could be applied in other regions of the world.