Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Leif A. Mortenson"'
Autor:
Zachary J. Robbins, Chonggang Xu, Alex Jonko, Rutuja Chitra-Tarak, Christopher J. Fettig, Jennifer Costanza, Leif A. Mortenson, Brian H. Aukema, Lara M. Kueppers, Robert M. Scheller
Publikováno v:
Frontiers in Environmental Science, Vol 11 (2023)
Outbreaks of several bark beetle species can develop rapidly in response to drought and may result in large transfers of carbon (C) stored in live trees to C stored in dead trees (10s of Tg C yr-1 in the western U.S. alone), which over time will be r
Externí odkaz:
https://doaj.org/article/f29be63d253347baad6cced61fc4a7f2
Autor:
Michael J. Koontz, Andrew M. Latimer, Leif A. Mortenson, Christopher J. Fettig, Malcolm P. North
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-13 (2021)
The 2012–2016 drought and western pine beetle outbreaks caused unprecedented mortality of ponderosa pine in the Sierra Nevada, California. Here, the authors analyse drone-based data from almost half a million trees and find an interaction between h
Externí odkaz:
https://doaj.org/article/8571c320782749b99ea565f59c6e317f
Autor:
Justin B. Runyon, Christopher J. Fettig, Jared A. Trilling, A. Steven Munson, Leif A. Mortenson, Brytten E. Steed, Kenneth E. Gibson, Carl L. Jørgensen, Stephen R. McKelvey, Joel D. McMillin, Jackson P. Audley, Jose F. Negrón
Publikováno v:
Trees, Forests and People, Vol 2, Iss , Pp 100038- (2020)
Bark beetle outbreaks alter forests in many ways including stand structure, fuels and fire behavior, wildlife habitat, and aesthetic value. Less understood are the effects outbreaks have on understory vegetation, despite the importance for overstory
Externí odkaz:
https://doaj.org/article/3fca0d4956ec4adbabae1cf9c063860a
Publikováno v:
Forests, Vol 12, Iss 12, p 1677 (2021)
We examined causes and levels of tree mortality one year after thinning and prescribed burning was completed in ponderosa pine (Pinus ponderosa Dougl. ex Laws.) forests at Pringle Falls Experimental Forest, Oregon, U.S. Four blocks of five experiment
Externí odkaz:
https://doaj.org/article/b2b4575c94d8466d8ed01481ac6e28a0
Autor:
Rutuja Chitra-Tarak, Gavin D. Madakumbura, Robert M. Scheller, Michael L. Goulden, Devin W. Goodsman, Alex Hall, Christopher J. Fettig, P. Buotte, Leif A. Mortenson, James A. Powell, Zachary J. Robbins, Brian H. Aukema, Lara M. Kueppers, Chonggang Xu, Charles D. Koven
Publikováno v:
Global Change Biology. 28:509-523
Quantifying the responses of forest disturbances to climate warming is critical to our understanding of carbon cycles and energy balances of the Earth system. The impact of warming on bark beetle outbreaks is complex as multiple drivers of these even
Autor:
Emilio Vilanova, Leif A. Mortenson, Lauren E. Cox, Beverly M. Bulaon, Jamie M. Lydersen, Christopher J. Fettig, John J. Battles, Jodi N. Axelson
Publikováno v:
Forest Ecology and Management. 537:120945
Autor:
Christopher J. Fettig, Robert A. Progar, Brytten E. Steed, Agenor Mafra-Neto, Cynthia L Snyder, Sandra J. Kegley, Matthew J. Rinella, Leif A. Mortenson, A. Steven Munson, Daniel R. Cluck
Publikováno v:
Journal of Economic Entomology. 114:209-214
Whitebark pine, Pinus albicaulis Engelm., is a subalpine tree endemic to western North America. This species provides multiple ecosystem services and is suffering widespread mortality from mountain pine beetle, Dendroctonus ponderosae Hopkins. Verben
Autor:
Christopher J. Fettig, Steven A. Munson, Justin B. Runyon, Leif A. Mortenson, Brytten E. Steed, Kenneth E. Gibson, Carl L. Jørgensen, Stephen R. McKelvey, Joel D. McMillin, Jackson P. Audley, Jose F. Negrón
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1af49a22516e775d83005cda0e917414
https://doi.org/10.2737/nrs-gtr-p-197-paper11
https://doi.org/10.2737/nrs-gtr-p-197-paper11
Autor:
Jackson P Audley, Christopher J Fettig, A Steven Munson, Darren C Blackford, Leif A Mortenson, Agenor Mafra-Neto
Publikováno v:
Journal of economic entomology. 115(1)
Spruce beetle, Dendroctonus rufipennis Kirby (Coleoptera: Curculionidae), is a lethal pest of spruce trees in North America. Despite decades of research, a semiochemical repellent that consistently and effectively protects spruce trees remains elusiv
Publikováno v:
Forest Ecology and Management. 432:164-178
Much of California, U.S. experienced a severe drought in 2012–2015 inciting a large tree mortality event in the central and southern Sierra Nevada. We assessed causal agents and rates of tree mortality, and short-term impacts to forest structure an