Phillip van Mantgem
Phil van Mantgem is a research ecologist at the Western Ecological Research Center.
RESEARCH INTERESTS
- Conservation biology
- Fire ecology
- Forest ecology
Professional Experience
Research Ecologist, USGS, Redwood Field Station, Arcata, CA, 2008 - Present
Ecologist, USGS, Sequoia and Kings Canyon Field Station, Three Rivers, CA, 2000 - 2008
Education and Certifications
Ph.D., Ecology, University of California, Davis, CA 2001
M.S., Plant Biology, University of California, Davis, CA 1996
B.S., Botany, University of Iowa, Iowa City, IA 1991
Science and Products
Filter Total Items: 16
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Filter Total Items: 77
Forest restoration at Redwood National Park: Exploring prescribed fire alternatives to second-growth management: A case study Forest restoration at Redwood National Park: Exploring prescribed fire alternatives to second-growth management: A case study
Almost half of Redwood National Park is comprised of second-growth forests characterized by high stand density, deficient redwood composition, and low understory biodiversity. Typical structure of young redwood stands impedes the recovery of old-growth conditions, such as dominance of redwood (Sequoia sempervirens (D. Don) Endl.), distinct canopy layers and diverse understory vegetation...
Authors
Eamon Engber, Jason Teraoka, Phillip J. van Mantgem
Growth of coast redwood and Douglas-fir following thinning in second-growth forests at Redwood National Park and Headwaters Forest Reserve Growth of coast redwood and Douglas-fir following thinning in second-growth forests at Redwood National Park and Headwaters Forest Reserve
Managers of second-growth forests at Redwood National Park and the Bureau of Land Management’s Headwaters Forest Reserve encourage the development of late seral forest characteristics using mechanical thinning, where competing vegetation is removed to promote growth of residual trees. Yet the ability to quantify and reliably predict outcomes of treatments such as these is hindered by the...
Authors
Phillip J. van Mantgem, Jason Teraoka, David LaFever, Laura Lalemand
Forest restoration at Redwood National Park: exploring prescribed fire alternatives to second-growth management: a case study Forest restoration at Redwood National Park: exploring prescribed fire alternatives to second-growth management: a case study
Almost half of Redwood National Park is comprised of second-growth forests characterized by high stand density, deficient redwood composition, and low understory biodiversity. Typical structure of young redwood stands impedes the recovery of old-growth conditions, such as dominance of redwood (Sequoia sempervirens (D. Don) Endl.), distinct canopy layers and diverse understory vegetation...
Authors
Eamon Engber, Jason Teraoka, Phillip van Mantgem
Low thinning and crown thinning of two severities as restoration tools at Redwood National Park Low thinning and crown thinning of two severities as restoration tools at Redwood National Park
Interest in the restoration of second-growth forests has continued to increase in the redwood region, which has further increased the importance of evaluating restoration-based silvicultural strategies. This study assessed the short-term effectiveness of four silvicultural treatments (two silvicultural thinning methods, low thinning and crown thinning, and two basal area retentions, 80...
Authors
Jason Teraoka, Phillip van Mantgem, Christopher R. Keyes
The relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis) The relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis)
Pathogens and insect pests have become increasingly important drivers of tree mortality in forested ecosystems. Unfortunately, understanding the relative contributions of multiple mortality agents to the population decline of trees is difficult, because it requires frequent measures of tree survival, growth, and recruitment, as well as the incidence of mortality agents. We present a...
Authors
Erik S Jules, Jenell Jackson, Phillip van Mantgem, Jennifer Beck, Michael Murray, E. Sahara
Duration of fuels reduction following prescribed fire in coniferous forests of U.S. national parks in California and the Colorado Plateau Duration of fuels reduction following prescribed fire in coniferous forests of U.S. national parks in California and the Colorado Plateau
Prescribed fire is a widely used forest management tool, yet the long-term effectiveness of prescribed fire in reducing fuels and fire hazards in many vegetation types is not well documented. We assessed the magnitude and duration of reductions in surface fuels and modeled fire hazards in coniferous forests across nine U.S. national parks in California and the Colorado Plateau. We used
Authors
Phillip van Mantgem, Laura Lalemand, MaryBeth Keifer, Jeffrey M. Kane
Does prescribed fire promote resistance to drought in low elevation forests of the Sierra Nevada, California, USA? Does prescribed fire promote resistance to drought in low elevation forests of the Sierra Nevada, California, USA?
Prescribed fire is a primary tool used to restore western forests following more than a century of fire exclusion, reducing fire hazard by removing dead and live fuels (small trees and shrubs). It is commonly assumed that the reduced forest density following prescribed fire also reduces competition for resources among the remaining trees, so that the remaining trees are more resistant...
Authors
Phillip van Mantgem, Anthony C. Caprio, Nathan Stephenson, Adrian J. Das
Increasing elevation of fire in the Sierra Nevada and implications for forest change Increasing elevation of fire in the Sierra Nevada and implications for forest change
Fire in high-elevation forest ecosystems can have severe impacts on forest structure, function and biodiversity. Using a 105-year data set, we found increasing elevation extent of fires in the Sierra Nevada, and pose five hypotheses to explain this pattern. Beyond the recognized pattern of increasing fire frequency in the Sierra Nevada since the late 20th century, we find that the upper...
Authors
Mark Schwartz, Nathalie Butt, Christopher Dolanc, Andrew Holguin, Max A. Moritz, Malcolm North, Hugh Safford, Nathan Stephenson, James Thorne, Phillip van Mantgem
The influence of prefire tree growth and crown condition on postfire mortality of sugar pine following prescribed fire in Sequoia National Park The influence of prefire tree growth and crown condition on postfire mortality of sugar pine following prescribed fire in Sequoia National Park
Tree mortality is a vital component of forest management in the context of prescribed fires; however, few studies have examined the effect of prefire tree health on postfire mortality. This is especially relevant for sugar pine (Pinus lambertiana Douglas), a species experiencing population declines due to a suite of anthropogenic factors. Using data from an old-growth mixed-conifer...
Authors
Jonathan Nesmith, Adrian J. Das, Kevin O’Hara, Phillip van Mantgem
Structure, diversity, and biophysical properties of old-growth forestsin the Klamath region, USA Structure, diversity, and biophysical properties of old-growth forestsin the Klamath region, USA
The diverse old-growth forests in Klamath region of northern California and southern Oregon provide valuable ecosystem services (e.g., maintaining watersheds, wildlife habitat, recreation), but may be vulnerable to a wide range of stressors, including invasive species, disrupted disturbance regimes, and climatic change. Yet our understanding of how forest structure in the Klamath region...
Authors
Phillip van Mantgem, Daniel Starr
An individual-based growth and competition model for coastal redwood forest restoration An individual-based growth and competition model for coastal redwood forest restoration
Thinning treatments to accelerate coastal redwood forest stand development are in wide application, but managers have yet to identify prescriptions that might best promote Sequoia sempervirens (Lamb. ex D. Don) Endl. (redwood) growth. The creation of successful thinning prescriptions would be aided by identifying the underlying mechanisms governing how individual tree growth responds to
Authors
Phillip van Mantgem, Adrian J. Das
Rate of tree carbon accumulation increases continuously with tree size Rate of tree carbon accumulation increases continuously with tree size
Forests are major components of the global carbon cycle, providing substantial feedback to atmospheric greenhouse gas concentrations. Our ability to understand and predict changes in the forest carbon cycle—particularly net primary productivity and carbon storage - increasingly relies on models that represent biological processes across several scales of biological organization, from...
Authors
N.L. Stephenson, A.J. Das, R. Condit, S.E. Russo, P.J. Baker, N.G. Beckman, D.A. Coomes, E.R. Lines, W.K. Morris, N. Rüger, E. Alvarez, C. Blundo, S. Bunyavejchewin, G. Chuyong, S.J. Davies, A. Duque, C.N. Ewango, O. Flores, J.F. Franklin, H.R. Grau, Z. Hao, M. Harmon, S.P. Hubbell, D. Kenfack, Y. Lin, J.-R. Makana, A. Malizia, L.R. Malizia, R.J. Pabst, N. Pongpattananurak, S.-H. Su, I-F. Sun, S. Tan, D. Thomas, P. van Mantgem, X. Wang, S.K. Wiser, M.A. Zavala
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 77
Forest restoration at Redwood National Park: Exploring prescribed fire alternatives to second-growth management: A case study Forest restoration at Redwood National Park: Exploring prescribed fire alternatives to second-growth management: A case study
Almost half of Redwood National Park is comprised of second-growth forests characterized by high stand density, deficient redwood composition, and low understory biodiversity. Typical structure of young redwood stands impedes the recovery of old-growth conditions, such as dominance of redwood (Sequoia sempervirens (D. Don) Endl.), distinct canopy layers and diverse understory vegetation...
Authors
Eamon Engber, Jason Teraoka, Phillip J. van Mantgem
Growth of coast redwood and Douglas-fir following thinning in second-growth forests at Redwood National Park and Headwaters Forest Reserve Growth of coast redwood and Douglas-fir following thinning in second-growth forests at Redwood National Park and Headwaters Forest Reserve
Managers of second-growth forests at Redwood National Park and the Bureau of Land Management’s Headwaters Forest Reserve encourage the development of late seral forest characteristics using mechanical thinning, where competing vegetation is removed to promote growth of residual trees. Yet the ability to quantify and reliably predict outcomes of treatments such as these is hindered by the...
Authors
Phillip J. van Mantgem, Jason Teraoka, David LaFever, Laura Lalemand
Forest restoration at Redwood National Park: exploring prescribed fire alternatives to second-growth management: a case study Forest restoration at Redwood National Park: exploring prescribed fire alternatives to second-growth management: a case study
Almost half of Redwood National Park is comprised of second-growth forests characterized by high stand density, deficient redwood composition, and low understory biodiversity. Typical structure of young redwood stands impedes the recovery of old-growth conditions, such as dominance of redwood (Sequoia sempervirens (D. Don) Endl.), distinct canopy layers and diverse understory vegetation...
Authors
Eamon Engber, Jason Teraoka, Phillip van Mantgem
Low thinning and crown thinning of two severities as restoration tools at Redwood National Park Low thinning and crown thinning of two severities as restoration tools at Redwood National Park
Interest in the restoration of second-growth forests has continued to increase in the redwood region, which has further increased the importance of evaluating restoration-based silvicultural strategies. This study assessed the short-term effectiveness of four silvicultural treatments (two silvicultural thinning methods, low thinning and crown thinning, and two basal area retentions, 80...
Authors
Jason Teraoka, Phillip van Mantgem, Christopher R. Keyes
The relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis) The relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis)
Pathogens and insect pests have become increasingly important drivers of tree mortality in forested ecosystems. Unfortunately, understanding the relative contributions of multiple mortality agents to the population decline of trees is difficult, because it requires frequent measures of tree survival, growth, and recruitment, as well as the incidence of mortality agents. We present a...
Authors
Erik S Jules, Jenell Jackson, Phillip van Mantgem, Jennifer Beck, Michael Murray, E. Sahara
Duration of fuels reduction following prescribed fire in coniferous forests of U.S. national parks in California and the Colorado Plateau Duration of fuels reduction following prescribed fire in coniferous forests of U.S. national parks in California and the Colorado Plateau
Prescribed fire is a widely used forest management tool, yet the long-term effectiveness of prescribed fire in reducing fuels and fire hazards in many vegetation types is not well documented. We assessed the magnitude and duration of reductions in surface fuels and modeled fire hazards in coniferous forests across nine U.S. national parks in California and the Colorado Plateau. We used
Authors
Phillip van Mantgem, Laura Lalemand, MaryBeth Keifer, Jeffrey M. Kane
Does prescribed fire promote resistance to drought in low elevation forests of the Sierra Nevada, California, USA? Does prescribed fire promote resistance to drought in low elevation forests of the Sierra Nevada, California, USA?
Prescribed fire is a primary tool used to restore western forests following more than a century of fire exclusion, reducing fire hazard by removing dead and live fuels (small trees and shrubs). It is commonly assumed that the reduced forest density following prescribed fire also reduces competition for resources among the remaining trees, so that the remaining trees are more resistant...
Authors
Phillip van Mantgem, Anthony C. Caprio, Nathan Stephenson, Adrian J. Das
Increasing elevation of fire in the Sierra Nevada and implications for forest change Increasing elevation of fire in the Sierra Nevada and implications for forest change
Fire in high-elevation forest ecosystems can have severe impacts on forest structure, function and biodiversity. Using a 105-year data set, we found increasing elevation extent of fires in the Sierra Nevada, and pose five hypotheses to explain this pattern. Beyond the recognized pattern of increasing fire frequency in the Sierra Nevada since the late 20th century, we find that the upper...
Authors
Mark Schwartz, Nathalie Butt, Christopher Dolanc, Andrew Holguin, Max A. Moritz, Malcolm North, Hugh Safford, Nathan Stephenson, James Thorne, Phillip van Mantgem
The influence of prefire tree growth and crown condition on postfire mortality of sugar pine following prescribed fire in Sequoia National Park The influence of prefire tree growth and crown condition on postfire mortality of sugar pine following prescribed fire in Sequoia National Park
Tree mortality is a vital component of forest management in the context of prescribed fires; however, few studies have examined the effect of prefire tree health on postfire mortality. This is especially relevant for sugar pine (Pinus lambertiana Douglas), a species experiencing population declines due to a suite of anthropogenic factors. Using data from an old-growth mixed-conifer...
Authors
Jonathan Nesmith, Adrian J. Das, Kevin O’Hara, Phillip van Mantgem
Structure, diversity, and biophysical properties of old-growth forestsin the Klamath region, USA Structure, diversity, and biophysical properties of old-growth forestsin the Klamath region, USA
The diverse old-growth forests in Klamath region of northern California and southern Oregon provide valuable ecosystem services (e.g., maintaining watersheds, wildlife habitat, recreation), but may be vulnerable to a wide range of stressors, including invasive species, disrupted disturbance regimes, and climatic change. Yet our understanding of how forest structure in the Klamath region...
Authors
Phillip van Mantgem, Daniel Starr
An individual-based growth and competition model for coastal redwood forest restoration An individual-based growth and competition model for coastal redwood forest restoration
Thinning treatments to accelerate coastal redwood forest stand development are in wide application, but managers have yet to identify prescriptions that might best promote Sequoia sempervirens (Lamb. ex D. Don) Endl. (redwood) growth. The creation of successful thinning prescriptions would be aided by identifying the underlying mechanisms governing how individual tree growth responds to
Authors
Phillip van Mantgem, Adrian J. Das
Rate of tree carbon accumulation increases continuously with tree size Rate of tree carbon accumulation increases continuously with tree size
Forests are major components of the global carbon cycle, providing substantial feedback to atmospheric greenhouse gas concentrations. Our ability to understand and predict changes in the forest carbon cycle—particularly net primary productivity and carbon storage - increasingly relies on models that represent biological processes across several scales of biological organization, from...
Authors
N.L. Stephenson, A.J. Das, R. Condit, S.E. Russo, P.J. Baker, N.G. Beckman, D.A. Coomes, E.R. Lines, W.K. Morris, N. Rüger, E. Alvarez, C. Blundo, S. Bunyavejchewin, G. Chuyong, S.J. Davies, A. Duque, C.N. Ewango, O. Flores, J.F. Franklin, H.R. Grau, Z. Hao, M. Harmon, S.P. Hubbell, D. Kenfack, Y. Lin, J.-R. Makana, A. Malizia, L.R. Malizia, R.J. Pabst, N. Pongpattananurak, S.-H. Su, I-F. Sun, S. Tan, D. Thomas, P. van Mantgem, X. Wang, S.K. Wiser, M.A. Zavala