Research Articles
Sounds of Atlantic sturgeon spawning: first description and opportunities for riverine endangered species conservation with passive acoustic monitoring
Key Words: Bioacoustics • Anadromous fish • Spawning aggregation • Fisheries management • Acipenser oxyrinchus
The study, published in Endangered Species Research and co‑authored by Environmental Science Program faculty member Dr. Patrick Baker, provides the first confirmed description of Atlantic sturgeon (Acipenser oxyrinchus) spawning sounds in the Hudson River. Researchers identified a distinctive 44 Hz low‑frequency signal that reliably aligned with telemetry‑tagged adults during spawning periods, with captive recordings validating the same acoustic cue. These findings highlight passive acoustic monitoring as a powerful, non‑invasive tool for detecting spawning aggregations, tracking habitat use, and improving conservation strategies for this endangered species. By establishing a new biological indicator, the study expands the role of bioacoustics in freshwater fisheries management and endangered species recovery.
To cite this article: Cohen R, Baker PJ, Bowser C, Breece MW, Flecker A, Fox D, Henne J, Higgs A, Niemistö M, Pendleton R, Sethi SA, White SL, Rice A. 2025. Sounds of Atlantic sturgeon spawning: first description and opportunities for riverine endangered species conservation with passive acoustic monitoring. Endanger Species Res. 14(2):127–135. https://doi.org/10.3354/esr01429
Want to know more? Click here to read the full paper!
Network-centric US military intelligence strategy for Africa's evolving geopolitical landscape
Key Words: Military intelligence • Africa • United States • United States • network-centric
The study, published in the African Security Review and co-authored by West Point geography faculty member John Melkon, examines the growing geopolitical competition in Africa, specifically focusing on expanding Chinese influence. The authors advocate for a network-centric approach to U.S. Military Intelligence (USMI), emphasizing the critical integration of human intelligence (HUMINT) and the establishment of strategic partnerships with African intelligence services. By applying social network theory, the research outlines strategies to engage key influential nodes within these local communities, which maximizes information flow and counters adversarial disinformation. These findings highlight the necessity of joint intelligence centers, staff exchanges, and revitalized regional expertise, expanding the U.S. framework for maintaining strategic partnerships and regional stability in an era of great power competition.
To cite this article: John Melkon, Brock A. Salgado & Dries Putter (03 Aug 2025): Network-centric US military intelligence strategy for Africa’s evolving geopolitical landscape, African Security Review, DOI: 10.1080/10246029.2025.2528706
Want to know more? Click here to read the full paper!
Heat and mortality in a semi-arid city: A multi-scalar analysis of the impacts of temperature in Denver, Colorado
Key Words: Extreme heat • Temperature-mortality relationships • Heat wave effect • Generalized additive model • Mortality
The study, published in Urban Climate and authored by Elizabeth Dzwonczyk and researchers from the University of Colorado Denver, investigates the temperature-mortality relationship in a semi-arid urban environment over a 30-year period. Utilizing generalized additive models across citywide, census tract, and block group scales, the research demonstrates that 5-day rolling averages of daily maximum surface air temperature offer the most robust predictor of heat-related mortality. These findings identify a modest but consistent heat wave effect and provide localized predictive maps that show risk patterns diverging from conventional socioeconomic vulnerability indicators. Ultimately, this multi-scalar framework offers a replicable approach for other semi-arid metropolitan areas to design targeted, equity-driven public health interventions and neighborhood-level adaptation strategies.
Want to know more? Click here to read the full paper!
Design and ground testing of a Zero-Discharge plant growth system for microgravity Applications
Key Words: Microgravity • Space agriculture • Automated fertigation • Re-planting • Water Use Efficiency • Mizuna • Moisture sensors
The study, published in Computers and Electronics in Agriculture and co-authored by West Point faculty member Sarah Schreck, details the design and ground testing of the Utah Reusable Root Module (URRM) system developed for space-based agriculture within NASA’s Ohalo III Crop Production System. Researchers engineered a zero-discharge, automated fertigation framework equipped with redundant soil moisture sensors and innovative top cover containment designs to manage water, nutrients, and gas distribution in a microgravity environment. Preliminary ground tests utilizing Mizuna demonstrated that the system reliably maintained target soil moisture ranges and uniform resource distribution without manual intervention, successfully yielding over 1 kg of fresh edible biomass. These findings highlight the URRM’s capacity to support semi-autonomous, high-efficiency crop production across continuous cycles, significantly strengthening the feasibility of life-support systems for long-duration human space exploration.
To cite this article: Garrido-Ruiz, C., González-Teruel, J. D., Dixon, C., Schreck, S., Bingham, C., Winward, T., Hutchings, R., Bingham, G. E., Bugbee, B., & Jones, S. B. (2025). Design and ground testing of a Zero-Discharge plant growth system for microgravity Applications. Computers and Electronics in Agriculture, 239, Article 111044. https://doi.org/10.3354/esr01429
Want to know more? Click here to read the full paper!
A matrix approach to visually communicate simultaneously the environmental and health impacts of foods
Key Words: environmental sustainability • human health • food groups • relative risk • health index
The study, published in Frontiers in Nutrition and co-authored by West Point faculty member Andrew Berardy, introduces a visual matrix designed to simultaneously communicate the environmental and health impacts of 30 commonly consumed food groups in the United States. Researchers aggregated data on carbon footprints and relative disease risks to categorize foods, demonstrating that plant-based, less-processed options generally offer favorable health benefits and lower carbon footprints compared to animal-based and highly processed alternatives. By intuitively highlighting the tradeoffs of various dietary choices, this matrix provides a practical tool for quickly evaluating sustainability and health outcomes. Ultimately, this accessible framework encourages more informed decision-making among consumers, policymakers, and health professionals to improve both human and planetary health.
To cite this article: Berardy, A., Fresán, U., Abbaspour, N., & Sabaté, J. (2025). A matrix approach to visually communicate simultaneously the environmental and health impacts of foods. Frontiers in Nutrition (Lausanne), 12, 1572297. https://doi.org/10.3389/fnut.2025.1572297
Want to know more? Click here to read the full paper!
Digitized Posters
Geopolitical Implications of Critical Mineral Mining in the Lithium Triangle
Introduction
Background and Relevance
The Lithium Triangle sits in the Andean Plateau region of Argentina, Chile, and Bolivia. 60% of the world’s known lithium reserves are contained within a subterranean brine found beneath the regions high-altitude salt flats, known as salars.
The current energy transition has increased the market demand for lithium, which is the primary component of lithium-ion batteries, used in most electronic devices and in notably large quantities in electric vehicle batteries.
Ground Truth Under Fire: Evaluating Backpack SLAM LiDAR for Under-Canopy Topography and Military Trafficability
Handheld SLAM LiDAR enables organic terrain collection in GPS-denied environments. This study compares SLAM-derived DEMs against UAS airborne ground truth at two sites to evaluate accuracy and asses whether the magnitude of the error is acceptable for vehicle trafficability planning.
The Impacts of Hemlock Woolly Adelgid on Army Installations
Introduction
Threat
The Hemlock Woolly Adelgid (Adelges tsugae, HWA) is an invasive insect native to East Asia which is now spreading across the Northeast affecting training areas and forests on military installations. HWA kills Eastern Hemlock (Tsuga canadensis) within 4-10 years, by feeding on the nutrients at the base of the needles during the winter (NYS DEC). The Eastern Hemlock is a foundational tree species in the northeast United States that plays a crucial ecological role in supporting wildlife habitats (Biological Control of Hemlock Woolly Adelgid 2024)
Assessing Forest Health Across U.S. Army Installations Using Sentinel-2 Imagery
Introduction
Preparing soldiers for combat is the responsibility of the leaders within our United States Army. This requires realistic training locations to best simulate what soldiers can expect to see in combat. Forests are the life blood of that realistic setting. Our Army needs realistic, thriving forests to best simulate the conditions soldiers may meet in austere, forward deployed environments
