Výsledky vyhľadávania - "Koontz, Michael J."

Cross-scale interaction of host tree size and climatic water deficit governs bark beetle-induced tree mortality Autor Koontz, Michael J., Latimer, Andrew M., Mortenson, Leif A., Fettig, Christopher J., North, Malcolm P.

“…The recent Californian hot drought (2012–2016) precipitated unprecedented ponderosa pine ( Pinus ponderosa ) mortality, largely attributable to the western…”
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Three types of rescue can avert extinction in a changing environment Autor Hufbauer, Ruth A, Szűcs, Marianna, Kasyon, Emily, Youngberg, Courtney, Koontz, Michael J, Richards, Christopher, Tuff, Ty, Melbourne, Brett A

“…Setting aside high-quality large areas of habitat to protect threatened populations is becoming increasingly difficult as humans fragment and degrade the…”
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Risky Development: Increasing Exposure to Natural Hazards in the United States Autor Iglesias, Virginia, Braswell, Anna E., Rossi, Matthew W., Joseph, Maxwell B., McShane, Caitlin, Cattau, Megan, Koontz, Michael J., McGlinchy, Joe, Nagy, R. Chelsea, Balch, Jennifer, Leyk, Stefan, Travis, William R.

“…Losses from natural hazards are escalating dramatically, with more properties and critical infrastructure affected each year. Although the magnitude,…”
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Giving Ecological Meaning to Satellite-Derived Fire Severity Metrics across North American Forests Autor Parks, Sean, Holsinger, Lisa, Koontz, Michael, Collins, Luke, Whitman, Ellen, Parisien, Marc-André, Loehman, Rachel, Barnes, Jennifer, Bourdon, Jean-François, Boucher, Jonathan, Boucher, Yan, Caprio, Anthony, Collingwood, Adam, Hall, Ron, Park, Jane, Saperstein, Lisa, Smetanka, Charlotte, Smith, Rebecca, Soverel, Nick

“…Satellite-derived spectral indices such as the relativized burn ratio (RBR) allow fire severity maps to be produced in a relatively straightforward manner…”
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Vegetation Recovery 16 Years after Feral Pig Removal from a Wet Hawaiian Forest Autor Cole, Rebecca J., Litton, Creighton M., Koontz, Michael J., Loh, Rhonda K.

“…Nonnative ungulates can alter the structure and function of forest ecosystems. Feral pigs in particular pose a substantial threat to native plant communities…”
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Limited directional change in mountaintop plant communities over 19 years in western North America Autor Goff, Kaleb A., Oldfather, Meagan F., Nachlinger, Jan, Smithers, Brian V., Koontz, Michael J., Bishop, Catie, Bishop, Jim, Burke, Mary T., Sheth, Seema N.

“…Plant communities on mountain summits are commonly long‐lived, cold‐adapted perennials with low dispersal ability. These characteristics in tandem with limited…”
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Parsing propagule pressure: Number, not size, of introductions drives colonization success in a novel environment Autor Koontz, Michael J., Oldfather, Meagan F., Melbourne, Brett A., Hufbauer, Ruth A.

“…Predicting whether individuals will colonize a novel habitat is of fundamental ecological interest and is crucial to conservation efforts. A consistently…”
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Democratizing macroecology: Integrating unoccupied aerial systems with the National Ecological Observatory Network Autor Koontz, Michael J., Scholl, Victoria M., Spiers, Anna I., Cattau, Megan E., Adler, John, McGlinchy, Joseph, Goulden, Tristan, Melbourne, Brett A., Balch, Jennifer K.

“…Macroecology research seeks to understand ecological phenomena with causes and consequences that accumulate, interact, and emerge across scales spanning…”
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Reply to Wootton and Pfister: The search for general context should include synthesis with laboratory model systems Autor Hufbauer, Ruth A, Szűcs, Marianna, Kasyon, Emily, Youngberg, Courtney, Koontz, Michael J, Richards, Christopher, Tuff, Ty, Melbourne, Brett A

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Warming weakens the night-time barrier to global fire Autor Balch, Jennifer K., Abatzoglou, John T., Joseph, Maxwell B., Koontz, Michael J., Mahood, Adam L., McGlinchy, Joseph, Cattau, Megan E., Williams, A. Park

“…Night-time provides a critical window for slowing or extinguishing fires owing to the lower temperature and the lower vapour pressure deficit (VPD). However,…”
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The changing landscape of wildfire: burn pattern trends and implications for California’s yellow pine and mixed conifer forests Autor Steel, Zachary L., Koontz, Michael J., Safford, Hugh D.

“…Purpose Wildfire spatial patterns drive ecological processes including vegetation succession and wildlife community dynamics. Such patterns may be changing due…”
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Local forest structure variability increases resilience to wildfire in dry western U.S. coniferous forests Autor Koontz, Michael J., North, Malcolm P., Werner, Chhaya M., Fick, Stephen E., Latimer, Andrew M., Swenson, Nathan

“…A ‘resilient’ forest endures disturbance and is likely to persist. Resilience to wildfire may arise from feedback between fire behaviour and forest structure…”
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Fuel connectivity, burn severity, and seed bank survivorship drive ecosystem transformation in a semiarid shrubland Autor Mahood, Adam L., Koontz, Michael J., Balch, Jennifer K.

“…A key challenge in ecology is understanding how multiple drivers interact to precipitate persistent vegetation state changes. These state changes may be both…”
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Effects of topoclimatic complexity on the composition of woody plant communities Autor Oldfather, Meagan F., Britton, Matthew N., Papper, Prahlad D., Koontz, Michael J., Halbur, Michelle M., Dodge, Celeste, Flint, Alan L., Flint, Lorriane E., Ackerly, David D.

“…Topography can create substantial environmental variation at fine spatial scales. Shaped by slope, aspect, hill-position and elevation, topoclimate…”
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Optimizing aerial imagery collection and processing parameters for drone‐based individual tree mapping in structurally complex conifer forests Autor Young, Derek J. N., Koontz, Michael J., Weeks, JonahMaria

“…Recent advances in remotely piloted aerial systems (‘drones’) and imagery processing enable individual tree mapping in forests across broad areas with low‐cost…”
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Range dynamics mediated by compensatory life stage responses to experimental climate manipulations Autor Oldfather, Meagan F., Koontz, Michael J., Doak, Daniel F., Ackerly, David D., Levine, Jonathan

“…The expectations of polar or upslope distributional shifts of species ranges in response to warming climate conditions have been recently questioned. Diverse…”
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Community turnover by composition and climatic affinity across scales in an alpine system Autor Smithers, Brian V., Oldfather, Meagan F., Koontz, Michael J., Bishop, Jim, Bishop, Catie, Nachlinger, Jan, Sheth, Seema N.

“…Premise Examining community turnover across climate gradients at multiple scales is vital to understanding biogeographic response to climate change. This…”
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Harnessing the NEON data revolution to advance open environmental science with a diverse and data‐capable community Autor Nagy, R. Chelsea, Cattau, Megan E., Ilangakoon, Nayani, Johnson, Brian, Joseph, Maxwell B., Marconi, Sergio, O’Riordan, Catherine, Sanovia, James, Swetnam, Tyson L., Travis, William R., Wasser, Leah A., Woolner, Elizabeth, Zarnetske, Phoebe, Abdulrahim, Mujahid, Adler, John, Barnes, Grenville, Blake, Rachael E., Brun, Julien, Buchanan, Jacob D., Chadwick, K. Dana, Chapman, Melissa S., Chong, Steven S., Chung, Y. Anny, Corman, Jessica R., Couret, Jannelle, Crispo, Erika, Doak, Thomas G., Donnelly, Alison, Duffy, Katharyn A., Dunning, Kelly H., Duran, Sandra M., Edmonds, Jennifer W., Fairbanks, Dawson E., Felton, Andrew J., Florian, Christopher R., Gann, Daniel, Gebhardt, Martha, Gill, Nathan S., Gram, Wendy K., Guo, Jessica S., Harvey, Brian J., Hayes, Katherine R., Helmus, Matthew R., Hensley, Robert T., Hondula, Kelly L., Huang, Tao, Iglesias, Virginia, Jarzyna, Marta A., Johnson, Tiona M., Jones, Katherine D., Jones, Megan A., Just, Michael G., Kaddoura, Youssef O., Kagawa‐Vivani, Aurora K., Keller, Adrienne B., King, Katelyn B. S., Kitzes, Justin, Koontz, Michael J., Kwan, Wai‐Yin, LaRue, Elizabeth A., Li, Daijiang, Li, Bonan, Lin, Yang, Liptzin, Daniel, Long, William Alex, Mahood, Adam L., Malone, Sparkle L., McGlinchy, Joseph M., Meier, Courtney L., Melbourne, Brett A., Morisette, Jeffery T., Muscarella, Chance, Muthukrishnan, Ranjan, Naithani, Kusum, Neely, Merrie, Norman, Kari, Parker, Stephanie M., Perez Rocha, Mariana, Petri, Laís, Ramey, Colette A., Record, Sydne, Rossi, Matthew W., SanClements, Michael, Schweiger, Anna K., Seyednasrollah, Bijan, Smith, Kathleen R., Sokol, Eric R., Spaulding, Sarah A., Spiers, Anna I., St. Denis, Lise A., Staccone, Anika P., Stanitski, Diane M., Stricker, Eva, Surasinghe, Thilina D., Thomsen, Sarah K., Vasek, Patrisse M., Xiaolu, Li, Yu, Rong, Yule, Kelsey M., Zhu, Kai

“…It is a critical time to reflect on the National Ecological Observatory Network (NEON) science to date as well as envision what research can be done right now…”
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Community turnover by composition and climatic affinity across scales in an alpine system Autor Smithers, Brian V, Oldfather, Meagan F, Koontz, Michael J, Bishop, Jim, Bishop, Catie, Nachlinger, Jan, Sheth, Seema N

“…Premise of the study: Examining community turnover across climate gradients at multiple scales is vital to understanding biogeographic response to climate…”
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The Effect of Forest Structure on Yellow Pine/Mixed-conifer Resilience to Wildfire and Bark Beetle Disturbance in the Sierra Nevada, California Autor Koontz, Michael J

“…Past and future disturbances are linked by their feedbacks with forest structure-- the size, species, and spatial distribution of vegetation in a forest…”
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