Ecological Studies Of Wolves On Isle Royale,
2026
Michigan Technological University
Ecological Studies Of Wolves On Isle Royale, Sarah R. Hoy, Rolf O. Peterson, John A. Vucetich
Ecological Studies of Wolves on Isle Royale
Annual Report 2025-2026
Status Of Soils In Protected Areas With Different Management Objectives In Lowland Rainforest, Southwest Nigeria,
2026
Federal College of Forestry, Jericho, Ibadan, Oyo State, Nigeria
Status Of Soils In Protected Areas With Different Management Objectives In Lowland Rainforest, Southwest Nigeria, Bolanle Lisa Olajiire-Ajayi, Adeniyi Sulaiman Gbadegesin, Omotosho Ayodele Ogidan
Journal of Bioresource Management
Understanding soil properties is fundamental to sustaining the ecological integrity of protected forest ecosystems. This study examined the influence of two management categories; Strict Nature Reserve (SN) and Natural Park (NP) on soil physicochemical properties within the lowland rainforest of southwestern Nigeria. Fourteen composite soil samples, six from SN and eight from NP, were analyzed for texture, bulk density (BD), pH, organic carbon (OC), total nitrogen (TN), available phosphorus (AP), exchangeable bases (Ca²⁺, Mg²⁺, K⁺, Na⁺), and cation exchange capacity (CEC); base saturation (BS) was also determined. Both management categories exhibited sandy loam to loamy sand textures, typical of gneissic …
Unraveling Hydrologic And Hydrochemical Processes Based On Long-Term Concentration–Discharge Analysis In The Green Lake 4 Catchment, Colorado Front Range, Usa,
2026
Michigan Technological University
Unraveling Hydrologic And Hydrochemical Processes Based On Long-Term Concentration–Discharge Analysis In The Green Lake 4 Catchment, Colorado Front Range, Usa, Fengjing Liu
Michigan Tech Publications
Concentration–discharge (C-Q) relationships were analyzed over decadal, annual, and seasonal timescales from water years 1982 to 2020 to understand hydrologic and hydrochemical processes in the Green Lake 4 catchment, Green Lakes Valley, Colorado Front Range. Geogenic solutes, along with the magnitude of stable isotopes, were dominated by a strong (p < .05) C-Q power law (C = aQb, where a and b are constants from the curve fitting, with b usually termed the b-coefficient) and consistent patterns over various timescales. The b-coefficients of geogenic solutes were negative, suggesting that those solutes primarily originated from groundwater with higher concentrations and diluted by shallow source waters with lower …
The Effects Of Affordability And Quality Of Care On Utilization Of Primary Healthcare Among Rural Residents In Twifo Ati-Morkwaa District, Ghana: A Qualitative Study,
2026
Michigan Technological University
The Effects Of Affordability And Quality Of Care On Utilization Of Primary Healthcare Among Rural Residents In Twifo Ati-Morkwaa District, Ghana: A Qualitative Study, Peter Ansah Boakye, Francis Tei-Nartey, Gideon Owusu
Michigan Tech Publications
Objective: This qualitative study examines how affordability and quality of care influence the utilization of primary healthcare (PHC) services among rural residents in the Twifo Ati-Morkwaa District, Ghana. While Ghana has implemented policies such as CHPS and NHIS to improve access, subjective experiences of rural residents regarding total costs of care and perceived quality remain underexplored. Methods: We conducted a qualitative cross-sectional study between April and September 2024 using purposive and snowball sampling. Ten gender-segregated focus group discussions (FGDs; n = 90 residents) and six in-depth interviews (IDIs) with PHC providers were conducted. Data were collected in Twi, transcribed and …
Humin-Based Bioadhesives For Manufacturing Particleboard Panels,
2026
Linnaeus University, Växjö
Humin-Based Bioadhesives For Manufacturing Particleboard Panels, Papiya Bhowmik, Reza Hosseinpourpia
Michigan Tech Publications
This study focused on a novel approach to combine humin, derived from fructose-based biorefinery processes, with two-dimensional graphene nanoparticles and glyoxal, a bio-based crosslinker, to formulate functional bioadhesives for manufacturing particleboards. Five different single-layer 8 mm particleboard panels were prepared using the developed humin-based adhesive formulas with and without graphene and tested by means of their mechanical properties and thickness swelling in accordance with the EN 310 and EN 319standards. The results were compared with panels bonded with commercial melamine-urea-formaldehyde (MUF), showing that the mechanical properties of particleboards bonded with humin reinforced with graphene nanoparticles were almost comparable to those …
Effects Of Forest Management And Land Use Change On Soil Carbon In The Us Gulf Coastal Plain,
2026
Michigan Technological University
Effects Of Forest Management And Land Use Change On Soil Carbon In The Us Gulf Coastal Plain, Lucas E. Nave, Kendall Delyser, Grant M. Domke, Scott M. Holub, Adrienne B. Keller, Darren Miller, Kevin A. Solarik, Erik Schilling, Jason Vogel, Christopher W. Swanston
Michigan Tech Publications
The US Gulf Coastal Plain is a region of diverse forests and management systems and dynamic land use changes. These drivers affect carbon (C) stocks at ecosystem to regional scales, in turn affecting processes such as forest regeneration, hydrologic and biogeochemical cycling, and social and economic systems. We quantified land use change and forest management effects on C stocks in the Gulf Coastal Plain, focusing on soils, using two complementary approaches: meta-analysis of published literature and analysis of forest inventory data. Land use change had larger effects than forest management on soil C stocks at all scales. The direction and …
Structural Dynamic Response Assessment Of Clt Wall Structure Systems In Wind-Only And Sequential Seismic–Wind Scenarios,
2026
Michigan Technological University
Structural Dynamic Response Assessment Of Clt Wall Structure Systems In Wind-Only And Sequential Seismic–Wind Scenarios, Yunxiang Ma, Qingli Dai, Xiang Zhao
Michigan Tech Publications
Because of concentrated connection damage, the impact of sequential hazards on CLT shear wall systems is much more severe than that on traditional concrete and steel structures considering ductile component behaviors. The present paper evaluated the dynamic response of CLT wall structures in wind-only and sequential seismic–wind scenarios and compared the structural dynamic responses and damage levels of different CLT wall systems. The structural models were established separately based on an SOM benchmark structure, a SOFIE project three-story CLT shear wall structure, and a PT CLT wall platform structure from the NHERI Tall Wood project. The equivalent fluctuating wind load …
Structural Dynamic Response Assessment Of Clt Wall Structure Systems In Wind-Only And Sequential Seismic–Wind Scenarios,
2026
Michigan Technological University
Structural Dynamic Response Assessment Of Clt Wall Structure Systems In Wind-Only And Sequential Seismic–Wind Scenarios, Yunxiang Ma, Qingli Dai, Alexander Zhao
Michigan Tech Publications
Because of concentrated connection damage, the impact of sequential hazards on CLT shear wall systems is much more severe than that on traditional concrete and steel structures considering ductile component behaviors. The present paper evaluated the dynamic response of CLT wall structures in wind-only and sequential seismic–wind scenarios and compared the structural dynamic responses and damage levels of different CLT wall systems. The structural models were established separately based on an SOM benchmark structure, a SOFIE project three-story CLT shear wall structure, and a PT CLT wall platform structure from the NHERI Tall Wood project. The equivalent fluctuating wind load …
“Blue Rings” In Engelmann Spruce From The Greater Yellowstone Ecoregion: Their Presentation And Efficacy As Proxies For Ephemeral Cooling Events,
2026
University of Louisville
“Blue Rings” In Engelmann Spruce From The Greater Yellowstone Ecoregion: Their Presentation And Efficacy As Proxies For Ephemeral Cooling Events, Isaac Grimm, Maegen Rochner
The Cardinal Edge
As the polar jet stream’s activity transforms under climate change’s influence, short-term, or ephemeral, cooling events could become more frequent. Understanding how such cooling events may affect forest dynamics and tree-growth can allow us to predict how the morphing jet stream may reflect in our future forests. “Blue rings” (BRs) have presented themselves as subsections of annual rings, made clear through the double-staining of microsections of wood, which have been associated with the interruption of conifers’ lignification process. Such features could allow us to peer back into pre-instrumental records and assess how a tree’s growth and their surrounding canopy may …
Leaf Droppage Delayed In Sugar Maple Trees On An Urban To Rural Gradient,
2026
University of Louisville
Leaf Droppage Delayed In Sugar Maple Trees On An Urban To Rural Gradient, Isabella S. Bastien, Isabella Bastien
The Cardinal Edge
This study investigates the timing of leaf abscission in Sugar Maple (Acer saccharum) trees along an urban-to-rural gradient in Louisville, Kentucky, to determine how proximity to urban environments influences leaf drop. We hypothesized that urban trees would retain their leaves longer than suburban or rural trees due to environmental stressors and tested this using weekly leaf collection and canopy cover measurements from three locations—urban, suburban, and rural. Results showed that urban trees exhibited delayed leaf drop and slower canopy opening compared to suburban and rural trees. These findings suggest that urban stressors significantly alter tree phenology, which may signal underlying …
Alternative Tree Species For Utah Syrup Production,
2026
Utah State University
Alternative Tree Species For Utah Syrup Production, Abigail Porter, Steven Price, Youping Sun, Darren Mcavoy
All Current Publications
When thinking about producing syrup from trees, most people's minds go straight to maple trees. However, a variety of other species in the Intermountain West can be tapped for sap, including other maple species, birch, sycamore, aspen, and walnut. This fact sheet reviews alternative tree species for syrup production in Utah.
Bondline Quality Of Norway Spruce (Picea Abies) Prepared At Various Gluing Conditions,
2026
Linnaeus University, Växjö
Bondline Quality Of Norway Spruce (Picea Abies) Prepared At Various Gluing Conditions, Souvik Ray, Roqeia Al Aid, Nour Aho, Michael Schweigler, Mattias Brännström, Reza Hosseinpourpia
Michigan Tech Publications
The objective of this study was to explore the effect of selected gluing parameters such as different wood surface temperature and equilibrium moisture content (EMC), the use of primer, and pressing pressure and duration, on the bondline quality of Norway spruce (Picea abies). Eight various combinations were evaluated for gluing spruce samples using commercial 1-component polyurethane adhesives and compared with control boards that were bonded at standard conditions of 12% EMC, 20°C surface temperature, 0.6 MPa pressing pressure and 75 min pressing duration. Tensile shear strength tests were conducted in accordance with the EN 302-1:2023 standard and revealed a negligible …
Recent Progress In The Application Of Graphene In Forest-Derived Products,
2026
Linnaeus University, Växjö
Recent Progress In The Application Of Graphene In Forest-Derived Products, Papiya Bhowmik, Sheikh Ali Ahmed, Xinfeng Xie, Reza Hosseinpourpia
Michigan Tech Publications
The global requirement to mitigate environmental challenges demands a paradigm shift towards sustainable materials. Forest-based products, primarily derived from wood, present a promising path due to their abundance and renewability. However, enhancing their properties to meet modern demands remains a challenge. This review article, the first of its kind, explores the transformative potential of incorporating graphene and graphene-based nanomaterials into forest-based products to overcome the challenges associated with mass-scale applications. Graphene, a two-dimensional carbon nanomaterial, has emerged as a multifunctional additive with exceptional mechanical, electrical, and thermal properties. Functionalization of graphene through covalent or non-covalent modifications has emerged as a …
Effect Of Tall Oil-Based Hydrophobic Emulsions On The Mechanical And Water-Related Properties Of High-Density Fibreboards,
2026
Linnaeus University, Växjö
Effect Of Tall Oil-Based Hydrophobic Emulsions On The Mechanical And Water-Related Properties Of High-Density Fibreboards, John Tosin Aladejana, Sheikh Ali Ahmed, Benjamin Voogt, Valeri Naydenov, Adrien Letoffe, Svante Nordänger, Conrad M. Sala, Piotr Koprowski, Stergios Adamopoulos, Andreas Stephan, Reza Hosseinpourpia
Michigan Tech Publications
This study unravelled the intricacy of bio-based hydrophobic formulae as a substitute for the conventional emulsified paraffin wax (hydrowax), a hydrophobic additive currently utilised in high-density fibreboard (HDF) fabrication. Utilisation of hydrowax is not a sustainable practice due to the potential depletion of its fossil-based sources. The industrial acceptability of a renewable hydrophobic additive depends on several stages of trials. Therefore, through a pilot-scale trial, this study explored the substitution effect of bio-based tall oil distillation product (TODP) in the HDF panels, establishing its mechanical and water-related properties. While the mechanical properties of the panels were not primarily influenced by …
Signatures Of The Anthropocene: Population Genomic Structure Detected In Pennsylvania Coyotes,
2026
Princeton University
Signatures Of The Anthropocene: Population Genomic Structure Detected In Pennsylvania Coyotes, Craig A. Marshall, Julia Halo, Kyle Van Why, Yeraldi Loera, Stavi R. Tennenbaum, Casey Burton, Ariana Di Landro, Dominic Dominguez, Daniel Duncan, Madison Machado, Catalina Posada, Stephen J. Gaughran, Madison Lichak, Kristin Brzeski, Elizabeth Heppenheimer, Bridgett Vonholdt
Michigan Tech Publications
Coyotes (Canis latrans) expanded across eastern North America in the last century and are ecological generalists capable of thriving across diverse habitats. Broad genetic surveillance has reported little spatial genetic patterning for this highly dispersive species. Here, we explore the genome-wide signatures of spatial patterns found in a 10-year study of 1199 coyotes from northeastern United States, with a temporal analysis of Pennsylvania coyotes. Despite their broad dispersal capability, we detected subtle but significant population structure, with two genetic clusters that have a weak clinal transition zone. This partitioning aligned qualitatively with patterns of human population density and activity. We …
Stemflow Dynamics In The Jamari National Forest (Brazilian Amazon): Ii. Solute Concentrations And Flux Dynamics,
2026
Federal University of Rondônia
Stemflow Dynamics In The Jamari National Forest (Brazilian Amazon): Ii. Solute Concentrations And Flux Dynamics, Jeferson Alberto De Lima, John T. Van Stan Ii, Karolina Lewińska, Agnieszka Dradrach, Jakub Ceglarek, Kelly Cristina Tonello
Biological, Geological, and Environmental Faculty Publications
Trees can redirect large volumes of rainwater to the base of their stems. This stemflow not only redistributes water but also channels canopy-derived solutes to the forest floor. Building on research showing canopy geometry and bark properties govern stemflow volumes, we examined how those same traits modulate the biogeochemical side of this flux. Over a 12-month period in Jamari National Forest (Brazil), we quantified stemflow volume and solute chemistry for 19 trees grouped by diameter at breast height (D: < 10, 10-20 and > 20 cm), crown area (CA: < 30, 30-60 and > 60 m(2)) and bark texture (smooth, fissured and rough). Small-stemmed, smooth-barked trees produced the greatest stemflow …
Assessing Tree Species Diversity In Forests Using Combined Remote Sensing Data,
2026
TÜBİTAK
Assessing Tree Species Diversity In Forests Using Combined Remote Sensing Data, Tufan Demi̇rel
Turkish Journal of Agriculture and Forestry
Tree species diversity (TSD) is a critical biological variable for ecosystem functioning and sustainable forest management.This study aimed to model TSD in forest ecosystems using spectral and texture metrics extracted from Sentinel-2, WorldView-3,and PlanetScope satellite imagery, and structural metrics derived from LiDAR data. Tree species data collected through field surveyswere used to calculate Shannon, Simpson, and species richness biodiversity indices. These biodiversity indicators were then related toexplanatory variables derived from remote sensing (RS) metrics. The Boruta algorithm was applied for variable selection and randomforest regression analysis was used for modeling. The results show that combining LiDAR and satellite data is …
Examining The Effect Of Different Polycarbonate Greenhouse Cover Materials On Tomato Yield And Plant Development With Thermal Imaging, Candan Korkmaz, Nefi̇se Yasemi̇n Tezcan
Turkish Journal of Agriculture and Forestry
In this study, the effects of different polycarbonate (PC) greenhouse covering materials on the environmental microclimateand plant growth were examined using three research greenhouses. Two types of PC covering materials were tested: the first greenhousewas covered with UV-additive PC (UV PC), the second greenhouse with UV+Infrared (IR) additive PC (UV+IR PC), and the third(control) greenhouse had UV-additive PC on the sidewalls and polyethylene (PE) covering material (UV PC+PE) on the roof. Themeasured fundamental parameters included total radiation transmittance, photosynthetically active radiation (PAR) transmittance,temperature, and relative humidity. Plant development was monitored and leaf temperatures were measured using a thermal camera atvarious …
Bioactive Profile And Mineral Composition Of Fruit Extracts From Four Wild Hawthorn (Crataegus Spp.) Species,
2026
Mardin Artuklu University, Vocational Higher School of Kızıltepe
Bioactive Profile And Mineral Composition Of Fruit Extracts From Four Wild Hawthorn (Crataegus Spp.) Species, Özlem Çakir, Kübra Çinar Topçu, Abdurrahman Sefali, İshak Bayyi̇ği̇t, Gülçe İlhan, Jyoti̇ Singh
Turkish Journal of Agriculture and Forestry
This study compared the antioxidant capacity, total phenolic content (TPC), phenolic composition, lipid oxidation level, andmineral profiles of extracts obtained from four wild hawthorn species (Crataegus tanacetifolia, C. orientalis subsp. orientalis, C. orientalissubsp. szovitsii, and C. monogyna) collected from northeastern Türkiye. Significant interspecific variations were observed in DPPH,FRAP, and CUPRAC assays. While C. monogyna had the highest reducing capacity and TPC, C. orientalis subsp. szovitsii had the highestDPPH activity. Ultra-high performance liquid chromatography coupled to tandem mass spectrometry analysis showed that catechin,epicatechin, chlorogenic acid, and quinic acid were the major phenolics, and were particularly abundant in C. monogyna. Despitehaving a …
Functional Characteristics Of Ice Creams Enriched With Aronia Melanocarpa And Sambucus Nigra L. Extracts,
2026
Atatürk Üniversitesi
Functional Characteristics Of Ice Creams Enriched With Aronia Melanocarpa And Sambucus Nigra L. Extracts, Murat Emre Terzi̇oğlu, Emi̇ne Maci̇t
Turkish Journal of Agriculture and Forestry
In this study, the effects of Aronia melanocarpa and Sambucus nigra L. extracts added at different concentrations (0.5%, 1%,and 1.5%) on the physicochemical, sensory, microbiological, antioxidant capacity (DPPH• and ABTS•+ radical scavenging activity, TPC,TFC, and TAC) antidiabetic (α-amylase and α-glucosidase inhibition), and anti-Alzheimer properties (AChE inhibitory activity) of icecream were investigated. According to the statistical analysis results, extract addition did not have an effect on the total dry matter, fatand ash ratios of the ice cream samples (p > 0.05), but it had an effect on the protein ratio, viscosity, and first drip time at the level ofp < 0.05. The addition of extract positively affected the DPPH• radical scavenging activity IC50 and ABTS•+ radical scavenging activityIC50 values of the ice cream samples, and also increased the TPC, TFC, and TAC values. Indeed, a decrease in the IC50 values of DPPH•and ABTS•+ radical scavenging activities indicates an increase in antioxidant activity. The highest TPC, TFC, and TAC values weredetected in the A-1.5 sample (sample containing 1.5% A. melanocarpa extract) as 749.33 mg GA/kg, 434.70 mg QE/kg, and 290.97 mg/kg, respectively. Similarly, the highest α-amylase inhibitory activity (23.08%), the highest α-glucosidase inhibitory activity (10.41%) andthe highest AChE inhibitory activity (14.70%) were observed in the A-1.5 sample. Extract addition had no effect on microbiologicalproperties and sensory properties except texture. The results of this study showed that A. melanocarpa, S. nigra L. extracts can be usedas a natural additive with antioxidant, antidiabetic and anti-Alzheimer activities in ice cream production.
