Xanthe J. Walker

Permafrost supports post-fire recovery of black spruce dominance in subarctic boreal forests

Caitlyn L. Lyons, Nicola J. Day, Jill F. Johnstone, Michelle C Mack et autres

Abstract Black spruce (Picea mariana) dominates the boreal forest of North America, provides important wildlife habitat, and contributes substantially to long-term carbon storage. Wildfire shifts forest composition immediately following fire, but under climate change an intensifying wildfire regime may hinder black spruce …

ca, nz, us (code pays fourni par la source)

Fire-adapted natural climate solutions to reduce wildfire emissions in US forests

Charles Truettner, Kendall DeLyser Roney, Lisa M Markovchick, Elizabeth R Pansing et autres

Abstract Wildfire activity and associated greenhouse gas emissions are increasing across US forests as climate change intensifies fire weather and fuel aridity. These trends challenge forest-based natural climate solutions (NCS) that prioritize carbon accumulation without accounting for wildfire-driven disturbance risk. We synthesize …

us, cn, Malawi (code pays fourni par la source)

Reburning from overwintering fires in boreal North America: insights from a Landsat time series analysis

Thomas D. Hessilt, Sander Veraverbeke, Michelle C. Mack, Richard Olsen et autres

Background Across boreal North America, fire is the primary forest disturbance. In recent years, concerns about overwintering fires in boreal forests have been growing. Overwintering fires smolder throughout winter and reappear in early spring in the subsequent fire season. Aims To investigate …

nl, gb, us, ca (code pays fourni par la source)

Burned area mapping across the Arctic-boreal zone with Landsat and Sentinel-2 imagery

Stefano Potter, Yili Yang, Arden L. Burrell, Anna Talucci et autres

Wildfires in the Arctic-boreal zone have increased in frequency over recent decades, carrying substantial ecological, social, and economic consequences. Remote sensing is crucial for mapping burned areas, monitoring wildfire dynamics, and evaluating their impacts. However, existing high-latitude burned area products suffer from …

gb, be, us (code pays fourni par la source)

Burned area mapping across the Arctic-boreal zone with Landsat and Sentinel-2 imagery

Stefano Potter, Yili Yang, Arden L. Burrell, Anna Talucci et autres

Wildfires in the Arctic-boreal zone have increased in frequency over recent decades, carrying substantial ecological, social, and economic consequences. Remote sensing is crucial for mapping burned areas, monitoring wildfire dynamics, and evaluating their impacts. However, existing high-latitude burned area products suffer from …

Burned area mapping across the Arctic-boreal zone with Landsat and Sentinel-2 imagery

Stefano Potter, Yili Yang, Arden L. Burrell, Anna Talucci et autres

Wildfires in the Arctic-boreal zone have increased in frequency over recent decades, carrying substantial ecological, social, and economic consequences. Remote sensing is crucial for mapping burned areas, monitoring wildfire dynamics, and evaluating their impacts. However, existing high-latitude burned area products suffer from …

Meta-analysis of North American Arctic and boreal aboveground biomass datasets: assessing accuracy, dynamics, and similarities

Wanwan Liang, Kirsten Bauck, Devon V. Maloney, Elizabeth Hoy et autres

Abstract The North American arctic and boreal regions (ABRs) are rapidly warming and experiencing intensifying disturbances. Accurately quantifying aboveground biomass (AGB) is critical for understanding the impacts of these changes on the carbon cycle and for designing climate change mitigation strategies. Several …

us (code pays fourni par la source)

Increased deciduous tree dominance reduces wildfire carbon losses in boreal forests

Betsy Black, Xanthe J. Walker, Logan T. Berner, Jacqueline Dean et autres

us (code pays fourni par la source)

Mitigating increasing wildfire risk through fuel break innovations

Nicholas T. Link, Jill F. Johnstone, Xanthe J. Walker, Felecia Amundsen et autres

A warming climate and expanding wildland urban interface are escalating wildfire risk to human life and property in the boreal forests of western North America. To address this heightened risk, fuel breaks, which reduce fuels and enhance tactical use by firefighters, are …

us, ca (code pays fourni par la source)

Permafrost Thaw Accelerates Old Soil Carbon Release, Outpacing New Plant Inputs During a 13‐Year Tundra Warming Experiment

Emma Lathrop, Craig R. See, Xanthe J. Walker, Grant Falvo et autres

ABSTRACT Massive stores of ancient soil organic carbon (SOC) in permafrost can decompose with Arctic warming and accelerate global climate change. Declining SOC stocks are central to the permafrost carbon feedback, but direct measures of SOC loss are extremely rare due to …

us, be (code pays fourni par la source)

Do fuel reduction treatments in Alaska affect tree health?

Sonja Noomah, Xanthe J. Walker, Nicholas T. Link, Michelle C. Mack

Abstract Increasing wildfire risk in Alaska has prompted the adoption of fuel reduction treatments, including hand-thinning and mechanical mastication, to mitigate fire behavior and improve firefighter safety. These fuel treatments may influence tree health conditions, including mortality, wind damage, disease, and one …

us (code pays fourni par la source)

Increasing wildfire frequency decreases carbon storage and leads to regeneration failure in Alaskan boreal forests

Xanthe J. Walker, Michelle C. Mack, Elizabeth C. Black, Jacqueline Dean et autres

Background: The increasing size, severity, and frequency of wildfires is one of the most rapid ways climate warming could alter the structure and function of high-latitude ecosystems. Historically, boreal forests in western North America had fire return intervals (FRI) of 70-130 years, …

us (code pays fourni par la source)