Natural Resources Canada

Biomass harvesting intensity influences above and below ground wood decomposition processes in a northern Ontario jack pine forest

Dead wood decomposition affects provision of habitat, carbon storage and soil nutrients and can serve as a functional indicator of ecosystem integrity. We aimed to assess the effect of increased biomass harvesting practices on wood decomposition processes, hypothesizing that incr...

Understanding spatial and temporal evolution of progressive excavation damage zone in granitic rocks – development of a novel mine-by and laboratory experimental framework at the BedrettoLab

Abstract. The brittle damage around tunnels in the form of spalling is common in massive crystalline rocks subjected to high in-situ stresses. Understanding the short-term development and long-term evolution of the Excavation Damage Zone (EDZ) is particularly important for deep g...

On the Discovery of the First Tetrapod Burrow from the Pennsylvanian-Age Clifton Formation, Stonehaven, New Brunswick, Canada

Reported trace fossils from the Clifton Formation, New Brunswick, Canada, are limited to a single occurrence of a temnospondyl trackway and invertebrate trackways identified in the Pennsylvanian continental strata. Our study builds on this with a description of a horizontal burro...

Technical note: T c 1D – a 1D thermal and thermochronometer age prediction model

Abstract. Thermochronological data are commonly used to study the activity of geological processes over timescales of millions of years. Ages produced by thermochronological measurements, however, are non-unique and do not directly record rates of processes, which has led to the...

Right on time: evaluating accuracy and timing of burn-severity assessments to support post-fire management

Abstract Effective wildfire impact assessment and post-fire management rely on burn-severity maps that accurately characterize fire effects on vegetation and soils. These maps inform time-sensitive activities such as post-fire flood and debris-flow modeling, risk mitigation for h...

Deformation, metamorphism, and time: a multi-method approach to mid-low temperature geochronology in Precambrian cratons

Abstract This study examines the microstructural, petrological, and geochemical processes that disrupt date relationships within biotite and apatite. We combine SEM-EBSD, cold/SEM-cathodoluminescence, EPMA and LA-ICP-MS geochemical mapping, with in situ multi-system geochronology...

Compounding Impacts—Genomic Exploration of the Potential Effect of Domestic Introgression on Climate Adaptation in Atlantic Salmon ( Salmo salar )

ABSTRACT Predicting population, species, and community responses to climate change is critical for the successful management of wild ecosystems. However, climate change does not act alone. Interactions among climate change and other anthropogenic threats could significantly compl...

Understanding forest soil degradation in Canada: threats, indicators and knowledge gaps

Canadian forests, encompassing approximately 367 million hectares, play an important role in global biodiversity conservation, carbon sequestration, hydrological regulation, and timber production. Nevertheless, these ecosystems are subjected to degradation pressures arising from...

Response of permafrost to recent extreme warm conditions (2023-2024) in northwestern Canada

The response of permafrost to anomalously warm years is examined within the context of a multi decadal warming trend in the Mackenzie Valley and Delta regions of northwestern Canada. The effects of warm conditions in 1998, 2023, and 2024 on permafrost are compared using long term...

Tree Species Vulnerability to Fire Increases at Dry Range Edge

ABSTRACT Plant responses to fire are generally characterized for individual species and thus do not capture the variation in responses that can occur geographically. Here, we examine post‐fire responses across the climatic range of multiple resprouting eucalypt species following...

Subsurface temperature anomalies reveal blind geothermal systems: A case study from the Aryskum Depression, South Torgai Basin, Kazakhstan

The petroliferous Aryskum Depression, located within the South Torgai Basin, Kazakhstan, comprises several grabens up to 6 km deep, separated by horsts with more than 4 km of structural relief. Spatial analysis of reported reservoir and measured bottomhole temperatures from oil a...

Activated carbon-based hybrid Ru catalysts for mild pyrolysis bio-oil stabilization: balancing Ru accessibility and Ru–support interaction

Mild hydrotreating of pyrolysis oil, often referred to as stabilization, requires selective hydrogenation of reactive oxygenates while limiting cracking, decarboxylation, and coke formation. This balance depends on how catalyst support controls Ru accessibility and Ru–support int...

Imaging and modeling crater floor subsidence at Nyiragongo Volcano, DRC

Abstract Localized crater deformation can shed insight into shallow magma processes and eruption hazards. To study localized crater deformation at Nyiragongo volcano (Democratic Republic of Congo), we processed Interferometric Synthetic Aperture Radar (InSAR) time series using RA...

AD-MERGE 2.0: an integrated assessment of the Nexus among energy transitions, climate impacts, and adaptation responses

Abstract. This paper presents AD-MERGE 2.0, an enhanced integrated assessment model that evaluates reactive (“flow”) and proactive (“stock”) adaptation strategies along with climate mitigation policies. The updated model extends AD-MERGE 1.0 through seven enhancements: (i) includ...

Fluid Injection Triggers Large‐Scale Slow‐Slip Activation of the Rocky Mountain Fold and Thrust Belt

Abstract Using interferometric synthetic aperture radar (InSAR) we show that hydraulic fracturing treatments near the subsurface deformation limit of the Rocky Mountain Fold and Thrust Belt produced 12 intraplate, aseismic, slow‐slip events with magnitudes 4.71–5.06 at 1,640–2,41...

Experimental and Numerical Investigation of Biocarbon Injection Behavior for Electric Arc Furnace Slag Foaming

Integrating renewable carbon sources into electric arc furnace (EAF) steelmaking requires an understanding not only of their reaction chemistry but also of their injectability under realistic process conditions. Biocarbon has emerged as a promising candidate, yet its physical del...

Life‐History Traits and Overwintering of Actia interrupta (Diptera: Tachinidae), a Larval Parasitoid of Choristoneura fumiferana (Lepidoptera: Tortricidae)

ABSTRACT Actia interrupta (Diptera: Tachinidae) is an important larval parasitoid of the eastern spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae), especially during low‐density (endemic) population phases. Despite its ecological importance, information on its b...

A Comparative Assessment of Alternative Approaches to Tree Diameter Increment Modelling

Tree diameter increment data are often characterized by skewness and heteroscedasticity. Increments can also be so small that null values are recorded in the field. Several modelling approaches exist to tackle these issues. We compared four approaches to diameter at breast height...

Deformation mechanism in laser-powder bed fused Ti-6Al-2Sn-4Zr-2Mo alloy: Role of heat treatment

The deformation mechanisms of heat-treated laser powder bed fused Ti-6Al-2Sn-4Zr-2Mo were investigated using tensile testing and transmission electron microscopy. Heat-treated conditions (solutionized and solutionized + aged) showed improved ductility and non-monotonic strain-har...