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With an increase in drought, bark beetles, and high-severity wildfire, resilience in frequent-fire forests may hinge on creating stands with significantly lower densities and minimal competition. Current management practices often prescribe conditions that maintain full competition to guide development of desired forest conditions. Creating stands largely free of competition would require a fundamental rethinking of how frequent-fire forests can be managed for resilience.
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Yellow pine and mixed-conifer (YPMC) forests are common forest types in northwestern California and southwestern Oregon. We conducted an in-depth assessment of the natural range of variation (NRV), focusing on ecosystem processes and forest structure from historical data sources and current reference forests, and then compared current conditions to the NRV. The assessment found that fires that escape initial attack can be much larger and generally have larger proportions of high-severity areas than typical pre-Euro-American settlement fires.
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Publications by research area:
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A framework for establishing a rapid ‘Ōhi‘a death resistance program.
Luiz, Blaine C.; Giardina, Christian P.; Keith, Lisa M.; Jacobs, Douglass F.; Sniezko, Richard A.; Hughes, Marc A.; Friday, James B.; Cannon, Philip; Hauff, Robert; Francisco, Kainana; Chau, Marian M.; Dudley, Nicklos; Yeh, Aileen; Asner, Gregory; Martin, Roberta E.; Perroy, Ryan; Tucker, Brian J.; Evangelista, ʻAleʻalani; Fernandez, Veronica; Martins- Keliʻihoʻomalu, Chloe; Santos, Kirie; Ohara, Rebekah. 2022. New Forests.
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Applications of a conceptual framework to assess climate controls of forest tree diseases.
Hennon, Paul E.; Frankel, Susan J.; Woods, Alex J.; Worrall, James J.; Ramsfield, Tod D.; Zambino, Paul J.; Shaw, Dave C.; Ritóková, Gabriela; Warwell, Marcus V; Norlander, Daniel; Mulvey, Robin L.; Shaw, Charles G. 2021. Forest Pathology. 51(6): 418.
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Management tactics to reduce bark beetle impacts in North America and Europe under altered forest and climatic conditions.
Fettig, Christopher J.; Egan, Joel M.; Delb, Horst; Hilszczanski, Jacek; Kautz, Markus; Munson, A. Steven.; Nowak, John T.; Negrón, Jose F. 2022. Bark Beetle Management, Ecology, and Climate Change. Cambridge, MA: Academic Press: 345-394. Chapter 11.
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Resource Management and Use
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Assessing climate risk to support urban forests in a changing climate.
Esperon-Rodriguez, Manuel; Rymer, Paul D.; Power, Sally A.; Barton, David N.; Cariñanos, Paloma; Dobbs, Cynnamon; Eleuterio, Ana Alice; Escobedo, Francisco J.; Hauer, Richard; Hermy, Martin; Jahani, Ali; Onyekwelu, Jonathan C.; Östberg, Johan; Pataki, Diane; Randrup, Thomas B.; Rasmussen, Tørres; Roman, Lara A.; Russo, Alessio; Shackleton, Charlie; Solfjeld, Ingjerd; Doorn, Natalie S.; Wells, Matthew J.; Wiström, Björn; Yan, Pengbo; Yang, Jun; Tjoelker, Mark G. 2022. Plants, People, Planet.
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Increasing conservation capacity by embracing ritual: kuahu as a portal to the sacred.
Kealiikanakaoleohaililani, Kekuhi; Sato, Aimee Y.; Giardina, Christian P.; Litton, Creighton M.; Ramavarapu, Smrity; Hutchins, Leslie; Wight, Evelyn H.; Clark, Michelle; Cordell, Susan; Francisco, Kainana S.; McMillen, Heather; Pascua, Pua‘alaIt; Yogi, Darcy. 2021. Pacific Conservation Biology. 27(4): 327-336.
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Kōkua aku, kōkua mai: an indigenous consensus-driven and place-based approach to community led dryland restoration and stewardship.
Kamelamela, Katie L.; Springer, Hannah Kihalani; Ku'ulei Keakealani, Roberta; Ching, Moana Ulu; Ticktin, Tamara; Ohara, Rebekah Dickens; Parsons, Elliott W.; Adkins, Edith D.; Francisco, Kainana S.; Giardina, Christian. 2022. Forest Ecology and Management. 506(3): 119949.
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Evidence for widespread changes in the structure, composition, and fire regimes of western North American forests.
Hagmann, R.K.; Hessburg, P.F.; Prichard, S.J.; Povak, N.A.; Brown, P.M.; Fulé, P.Z.; Keane, R.E.; Knapp, E.E.; Lydersen, J.M.; Metlen, K.L.; Reilly, M.J.; Sánchez Meador, A.J.; Stephens, S.L.; Stevens, J.T.; Taylor, A.H.; Yocom, L.L.; Battaglia, M.A.; Churchill, D.J.; Daniels, L.D.; Falk, D.A.; Henson, P.; Johnston, J.D.; Krawchuk, M.A.; Levine, C.R.; Meigs, G.W.; Merschel, A.G.; North, M.P.; Safford, Hugh; Swetnam, T.W.; Waltz, A.E.M. 2021. Ecological Applications. 31(8): e02431.
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Arresting the spread of invasive species in continental systems.
Hofstadter, Daniel; Kryshak, Nicholas; Wood, Connor; Dotters, Brian; Roberts, Kevin; Kelly, Kevin; Keane, John; Sawyer, Sarah; Shaklee, Paula; Kramer, H Anu; Gutiérrez, RJ; Peery, M Zachariah. 2022. Frontiers in Ecology and the Environment.
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