Search Results - "Stehn, Sarah"

Variability in the expansion of trees and shrubs in boreal Alaska by Brodie, Jedediah F., Roland, Carl A., Stehn, Sarah E., Smirnova, Ekaterina

“…The expansion of shrubs and trees across high-latitude ecosystems is one of the most dramatic ecological manifestations of climate change. Most of the work…”
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Environmental determinants of bryophyte community change over time by Shershen, Eric, Stehn, Sarah E., Budke, Jessica M.

“…Environmental factors mediating community change over time have been well documented for vascular plants, but not for their non‐vascular relatives, bryophytes…”
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Latent trajectory models for spatio‐temporal dynamics in Alaskan ecosystems by Lu, Xinyi, Hooten, Mevin B., Raiho, Ann M., Swanson, David K., Roland, Carl A., Stehn, Sarah E.

“…The Alaskan landscape has undergone substantial changes in recent decades, most notably the expansion of shrubs and trees across the Arctic. We developed a…”
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Multivariate Bayesian clustering using covariate‐informed components with application to boreal vegetation sensitivity by Scharf, Henry R., Raiho, Ann M., Pugh, Sierra, Roland, Carl A., Swanson, David K., Stehn, Sarah E., Hooten, Mevin B.

“…Climate change is impacting both the distribution and abundance of vegetation, especially in far northern latitudes. The effects of climate change are…”
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Searching for refuge: A framework for identifying site factors conferring resistance to climate-driven vegetation change by Raiho, Ann M., Scharf, Henry R., Roland, Carl A., Swanson, David K., Stehn, Sarah E., Hooten, Mevin B.

“…Aim Climate change is occurring at accelerated rates in high latitude regions such as Alaska, causing alterations in woody plant growth and associated…”
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Regional variation in interior Alaskan boreal forests is driven by fire disturbance, topography, and climate by Roland, Carl A., Schmidt, Joshua H., Winder, Samantha G., Stehn, Sarah E., Nicklen, E. Fleur

“…High latitude regions are warming rapidly with important ecological and societal consequences. Utilizing two landscape-scale data sets from interior Alaska, we…”
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Concordant community similarity patterns across functional groups in subarctic plant assemblages by Stehn, Sarah E., Roland, Carl A.

“…In light of increasing threats to global biodiversity, identifying the patterns in and drivers of variation in species composition along the environmental…”
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Borealization and its discontents: drivers of regional variation in plant diversity across scales in interior Alaska by Roland, Carl, Schmidt, Joshua H., Stehn, Sarah E., Hampton‐Miller, Celia J., Nicklen, E. Fleur

“…Quantitative studies of regional variation in plant diversity across eastern Beringia (northern Alaska and adjacent areas) are lacking due to an absence of…”
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A structural equation model linking past and present plant diversity in Alaska: a framework for evaluating future change by Roland, Carl A., Sadoti, Giancarlo, Nicklen, E. Fleur, McAfee, Stephanie A., Stehn, Sarah E.

“…Recent findings of peak plant species diversity occurring in alpine tundra in Alaska may reflect the filtering of the regional species pool during Pleistocene…”
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Microbial community diversity and composition across a gradient of soil acidity in spruce–fir forests of the southern Appalachian Mountains by Bardhan, Sougata, Jose, Shibu, Jenkins, Michael A., Webster, Christopher R., Udawatta, Ranjith P., Stehn, Sarah E.

“…► We evaluated the impact of acid deposition on microbial diversity in high elevation forests in US. ► Strong acidophilic bacterial species were identified…”
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Repeated Permafrost Formation and Degradation in Boreal Peatland Ecosystems in Relation to Climate Extremes, Fire, Ecological Shifts, and a Geomorphic Legacy by Jorgenson, Mark Torre, Kanevskiy, Mikhail, Roland, Carl, Hill, Kenneth, Schirokauer, David, Stehn, Sarah, Schroeder, Britta, Shur, Yuri

“…Permafrost formation and degradation creates a highly patchy mosaic of boreal peatland ecosystems in Alaska driven by climate, fire, and ecological changes. To…”
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Species richness of multiple functional groups peaks in alpine tundra in subarctic Alaska by Roland, Carl A., Stehn, Sarah E., Schmidt, Joshua H.

“…Climate warming has initiated changes to vegetation across subarctic North America with potential to dramatically alter the distribution of biodiversity of…”
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Proliferating poplars: the leading edge of landscape change in an Alaskan subalpine chronosequence by Roland, Carl A., Stehn, Sarah E., Schmidt, Joshua, Houseman, Brian

“…We remeasured a classic chronosequence study in the subalpine zone of the Alaska Range to evaluate how plant community attributes have changed across a set of…”
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Landscape heterogeneity buffers the impact of an extreme weather event on wildlife by Prugh, Laura R., Lundquist, Jessica D., Sullender, Benjamin K., Cunningham, Calum X., Dechow, Jack, Borg, Bridget L., Sousanes, Pamela J., Stehn, Sarah, Durand, Michael T.

“…Extreme weather events are becoming more frequent, with poorly known consequences for wildlife. In December 2021, an atmospheric river brought…”
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Regeneration responses to exogenous disturbance gradients in southern Appalachian Picea-Abies forests by Stehn, Sarah E., Jenkins, Michael A., Webster, Christopher R., Jose, Shibu

“…► We quantified the spatial variability of woody regeneration in Picea-Abies forests. ► Abies fraseri regeneration exhibited greater local variability than…”
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Patterns in the occupancy and abundance of the globally rare lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska by Stehn, Sarah E, Nelson, Peter R, Roland, Carl A, Jones, Jennifer R

“…We investigated habitat attributes related to the occupancy of the globally rare and endangered epiphytic lichen, Erioderma pedicellatum, in a newly discovered…”
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High-elevation ground-layer plant community composition across environmental gradients in spruce-fir forests by Stehn, Sarah E., Webster, Christopher R., Jenkins, Michael A., Jose, Shibu

“…We examined the influence of vegetation structure and soil chemistry on post-adelgid, ground-layer plant communities in high-elevation forests of the southern…”
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Ground-Layer Bryophyte Communities of Post-Adelgid Picea-Abies Forests by Stehn, Sarah E., Webster, Christopher R., Glime, Janice M., Jenkins, Michael A.

“…Spruce-fir forests of the southern Appalachians are threatened by the widespread death of Abies fraseri (Fraser Fir) caused by the exotic Adelges piceae…”
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Increasing fire and the decline of fire adapted black spruce in the boreal forest by Baltzer, Jennifer L., Day, Nicola J., Walker, Xanthe J., Greene, David, Mack, Michelle C., Alexander, Heather D., Arseneault, Dominique, Barnes, Jennifer, Bergeron, Yves, Boucher, Yan, Bourgeau-Chavez, Laura, Brown, Carissa D., Carrière, Suzanne, Howard, Brian K., Gauthier, Sylvie, Parisien, Marc-André, Reid, Kirsten A., Rogers, Brendan M., Roland, Carl, Sirois, Luc, Stehn, Sarah, Thompson, Dan K., Turetsky, Merritt R., Veraverbeke, Sander, Whitman, Ellen, Yang, Jian, Johnstone, Jill F.

“…Intensifying wildfire activity and climate change can drive rapid forest compositional shifts. In boreal North America, black spruce shapes forest flammability…”
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Non‐parametric methods reveal non‐linear functional trait variation of lichens along environmental and fire age gradients by Nelson, Peter R, McCune, Bruce, Roland, Carl, Stehn, Sarah, Podani, János

“…QUESTIONS: Popular methods to analyse community–trait–environment relationships constrain community patterns by trait and environment relationships. What if…”
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