Search Results - "Johnstone, Jill F."

Increasing wildfires threaten historic carbon sink of boreal forest soils by Walker, Xanthe J., Baltzer, Jennifer L., Cumming, Steven G., Day, Nicola J., Ebert, Christopher, Goetz, Scott, Johnstone, Jill F., Potter, Stefano, Rogers, Brendan M., Schuur, Edward A. G., Turetsky, Merritt R., Mack, Michelle C.

“…Boreal forest fires emit large amounts of carbon into the atmosphere primarily through the combustion of soil organic matter 1 – 3 . During each fire, a…”
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Changing disturbance regimes, ecological memory, and forest resilience by Johnstone, Jill F, Allen, Craig D, Franklin, Jerry F, Frelich, Lee E, Harvey, Brian J, Higuera, Philip E, Mack, Michelle C, Meentemeyer, Ross K, Metz, Margaret R, Perry, George LW, Schoennagel, Tania, Turner, Monica G

“…Ecological memory is central to how ecosystems respond to disturbance and is maintained by two types of legacies -information and material. Species…”
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Stable carbon isotope analysis reveals widespread drought stress in boreal black spruce forests by Walker, Xanthe J, Mack, Michelle C, Johnstone, Jill F

“…Unprecedented rates of climate warming over the past century have resulted in increased forest stress and mortality worldwide. Decreased tree growth in…”
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Widespread negative correlations between black spruce growth and temperature across topographic moisture gradients in the boreal forest by Walker, Xanthe, Johnstone, Jill F

“…The responses of tree growth to recent climate warming may signal changes in the susceptibility of forest communities to compositional change and consequently…”
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Examining forest resilience to changing fire frequency in a fire‐prone region of boreal forest by Hart, Sarah J., Henkelman, Jonathan, McLoughlin, Philip D., Nielsen, Scott E., Truchon‐Savard, Alexandre, Johnstone, Jill F.

“…Future changes in climate are widely anticipated to increase fire frequency, particularly in boreal forests where extreme warming is expected to occur…”
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The Impacts of Changing Disturbance Regimes on Serotinous Plant Populations and Communities by Buma, Brian, Brown, Carissa D, Donato, Dan C, Fontaine, Joseph B, Johnstone, Jill F

“…Climatic change is anticipated to alter disturbance regimes for many ecosystems. Among the most important effects are changes in the frequency, size, and…”
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Fire Severity Filters Regeneration Traits to Shape Community Assembly in Alaska’s Boreal Forest by Hollingsworth, Teresa N, Johnstone, Jill F, Bernhardt, Emily L, Chapin, F. Stuart, Reinhart, Kurt O

“…Disturbance can both initiate and shape patterns of secondary succession by affecting processes of community assembly. Thus, understanding assembly rules is a…”
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Modeling impacts of fire severity on successional trajectories and future fire behavior in Alaskan boreal forests by Johnstone, Jill F, Rupp, T. Scott, Olson, Mark, Verbyla, David

“…Much of the boreal forest in western North America and Alaska experiences frequent, stand-replacing wildfires. Secondary succession after fire initiates most…”
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The Relationship Between Maturation Size and Maximum Tree Size From Tropical to Boreal Climates by Journé, Valentin, Bogdziewicz, Michał, Courbaud, Benoit, Kunstler, Georges, Qiu, Tong, Acuña, Marie‐Claire Aravena, Ascoli, Davide, Bergeron, Yves, Berveiller, Daniel, Boivin, Thomas, Bonal, Raul, Caignard, Thomas, Cailleret, Maxime, Calama, Rafael, Camarero, J. Julio, Chang‐Yang, Chia‐Hao, Chave, Jerome, Chianucci, Francesco, Curt, Thomas, Cutini, Andrea, Das, Adrian, Daskalakou, Evangelia, Davi, Hendrik, Delpierre, Nicolas, Delzon, Sylvain, Dietze, Michael, Calderon, Sergio Donoso, Dormont, Laurent, Espelta, Josep Maria, Farfan‐Rios, William, Fenner, Michael, Franklin, Jerry, Gehring, Catherine, Gilbert, Gregory, Gratzer, Georg, Greenberg, Cathryn H., Guignabert, Arthur, Guo, Qinfeng, Hacket‐Pain, Andrew, Hampe, Arndt, Han, Qingmin, Hanley, Mick E., Lambers, Janneke Hille Ris, Holík, Jan, Hoshizaki, Kazuhiko, Ibanez, Ines, Johnstone, Jill F., Knops, Johannes M. H., Kobe, Richard K., Kurokawa, Hiroko, Lageard, Jonathan, LaMontagne, Jalene, Ledwon, Mateusz, Lefèvre, François, Leininger, Theodor, Limousin, Jean‐Marc, Lutz, James, Macias, Diana, Mårell, Anders, McIntire, Eliot, Moran, Emily V., Motta, Renzo, Myers, Jonathan, Nagel, Thomas A., Naoe, Shoji, Noguchi, Mahoko, Norghauer, Julian, Oguro, Michio, Ourcival, Jean‐Marc, Parmenter, Robert, Pearse, Ian, Pérez‐Ramos, Ignacio M., Piechnik, Łukasz, Podgórski, Tomasz, Poulsen, John, Redmond, Miranda D., Reid, Chantal D., Samonil, Pavel, Scher, C. Lane, Schlesinger, William H., Seget, Barbara, Sharma, Shubhi, Shibata, Mitsue, Silman, Miles, Steele, Michael, Stephenson, Nathan, Straub, Jacob, Sutton, Samantha, Swenson, Jennifer J., Swift, Margaret, Thomas, Peter A., Uriarte, Maria, Vacchiano, Giorgio, Whipple, Amy, Whitham, Thomas, Wright, S. Joseph, Zhu, Kai, Zimmerman, Jess, Żywiec, Magdalena, Clark, James S.

“…ABSTRACT The fundamental trade‐off between current and future reproduction has long been considered to result in a tendency for species that can grow large to…”
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Impacts of pre-fire conifer density and wildfire severity on ecosystem structure and function at the forest-tundra ecotone by Walker, Xanthe J, Howard, Brain K, Jean, Mélanie, Johnstone, Jill F, Roland, Carl, Rogers, Brendan M, Schuur, Edward A G, Solvik, Kylen K, Mack, Michelle C

“…Wildfire frequency and extent is increasing throughout the boreal forest-tundra ecotone as climate warms. Understanding the impacts of wildfire throughout this…”
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Drivers of legacy soil organic matter decomposition after fire in boreal forests by Izbicki, Brian, Walker, Xanthe J., Baltzer, Jennifer L., Day, Nicola J., Ebert, Christopher, Johnstone, Jill F., Pegoraro, Elaine, Schuur, Edward A. G., Turetsky, Merritt R., Mack, Michelle C.

“…Boreal forests harbor as much carbon (C) as the atmosphere and significant amounts of organic nitrogen (N), the nutrient most likely to limit plant…”
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The influence of postfire recovery and environmental conditions on boreal vegetation by Jorgensen, Alexis Gardiner, Alfaro‐Sánchez, Raquel, Cumming, Steven G., White, Alison L., Degré‐Timmons, Geneviève Éliane, Day, Nicola, Turetsky, Merritt, Johnstone, Jill F., Walker, Xanthe J., Baltzer, Jennifer L.

“…Climate change is increasing the frequency and extent of fires in the boreal biome of North America. These changes can alter the recovery of both canopy and…”
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Impacts of fire on non-native plant recruitment in black spruce forests of interior Alaska by Walker, Xanthe J, Frey, Matthew D, Conway, Alexandra J, Jean, Mélanie, Johnstone, Jill F

“…Climate change is expected to increase the extent and severity of wildfires throughout the boreal forest. Historically, black spruce (Picea mariana (Mill.)…”
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Cascading effects: insights from the U.S. Long Term Ecological Research Network by Bahlai, Christie A., Hart, Clarisse, Kavanaugh, Maria T., White, Jeffrey D., Ruess, Roger W., Brinkman, Todd J., Ducklow, Hugh W., Foster, David R., Fraser, William R., Genet, Hélène, Groffman, Peter M., Hamilton, Stephen K., Johnstone, Jill F., Kielland, Knut, Landis, Douglas A., Mack, Michelle C., Sarnelle, Orlando, Thompson, Jonathan R.

“…Ecosystems across the United States are changing in complex and unpredictable ways and analysis of these changes requires coordinated, long‐term research. This…”
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Predicting patterns of terrestrial lichen biomass recovery following boreal wildfires by Greuel, Ruth J., Degré‐Timmons, Geneviève É., Baltzer, Jennifer L., Johnstone, Jill F., McIntire, Eliot J. B., Day, Nicola J., Hart, Sarah J., McLoughlin, Philip D., Schmiegelow, Fiona K. A., Turetsky, Merritt R., Truchon‐Savard, Alexandre, Telgen, Mario D., Cumming, Steven G.

“…Increased fire activity due to climate change may impact the successional dynamics of boreal forests, with important consequences for caribou habitat. Early…”
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Explaining spatial heterogeneity in population dynamics and genetics from spatial variation in resources for a large herbivore by Contasti, Adrienne L, Tissier, Emily J, Johnstone, Jill F, McLoughlin, Philip D

“…Fine-scale spatial variation in genetic relatedness and inbreeding occur across continuous distributions of several populations of vertebrates; however, the…”
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Carbon loss from boreal forest wildfires offset by increased dominance of deciduous trees by Mack, Michelle C, Walker, Xanthe J, Johnstone, Jill F, Alexander, Heather D, Melvin, April M, Jean, Mélanie, Miller, Samantha N

“…In boreal forests, climate warming is shifting the wildfire disturbance regime to more frequent fires that burn more deeply into organic soils, releasing…”
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Assessing spatial and temporal variations in surface soil moisture in fire-disturbed black spruce forests in Interior Alaska using spaceborne synthetic aperture radar imagery — Implications for post-fire tree recruitment by Kasischke, Eric S., Bourgeau-Chavez, Laura L., Johnstone, Jill F.

“…Recent studies [Bourgeau-Chavez, L.L., Kasischke, E.S., Riordan, K., Brunzell, S.M., Nolan, M., Hyer, E.J., Slawski, J.J., Medvecz, M., Walters, T., and Ames,…”
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Controlled soil warming powered by alternative energy for remote field sites by Johnstone, Jill F, Henkelman, Jonathan, Allen, Kirsten, Helgason, Warren, Bedard-Haughn, Angela

“…Experiments using controlled manipulation of climate variables in the field are critical for developing and testing mechanistic models of ecosystem responses…”
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Once burned, twice shy: Repeat fires reduce seed availability and alter substrate constraints on Picea mariana regeneration by Brown, Carissa D., Johnstone, Jill F.

“…► Climate warming is expected to cause increases in fire frequency in the boreal forest. ► A change to the disturbance regime is an indirect effect of climate…”
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