Variable-Retention Harvesting as a Silvicultural Option for Lodgepole Pine

Bark beetle-induced mortality in forested landscapes of structurally uniform, even-aged lodgepole pine stands has inspired a growing interest in the potential of silvicultural treatments to enhance resilience by increasing spatial and vertical complexity. Silvicultural treatments can simulate mixed-severity disturbances that create multiaged lodgepole pine stands, which, along with heterogeneous forest landscapes, can play a role in mitigating susceptibility to primary disturbance agents (bark beetles and wildfire). With this article, we review multiaged lodgepole pine stand dynamics and discuss variable-retention harvesting as a silvicultural option for lodgepole pine. We describe the establishment and initial outcomes of an experimental variable-retention harvesting project established at the Tenderfoot Creek Experimental Forest (Montana) in 1999‐2003 and the objectives of a collaborative multiagency effort that is presently revisiting and analyzing that experiment.

[1]  J. Negrón,et al.  The effectiveness of vegetation management practices for prevention and control of bark beetle infestations in coniferous forests of the western and southern United States , 2007 .

[2]  Ecosystem-based management in the lodgepole pine zone , 2000 .

[3]  J. N. Long,et al.  Technical Commentary: Management of Lodgepole Pine Stand Density to Reduce Susceptibility to Mountain Pine Beetle Attack , 1996 .

[4]  M. Amoroso,et al.  Evidence of mixed-severity fires in the foothills of the Rocky Mountains of west-central Alberta, Canada , 2011 .

[5]  J. Hicke,et al.  Cross-scale Drivers of Natural Disturbances Prone to Anthropogenic Amplification: The Dynamics of Bark Beetle Eruptions , 2008 .

[6]  R. Alexander,et al.  Silvicultural systems and cutting methods for old-growth lodgepole pine forests in the Central Rocky Mountains / , 1986 .

[7]  M. Jenkins,et al.  Potential Mountain Pine Beetle (Coleoptera: Scolytidae) Attack of Lodgepole Pine as Described by Stand Density Index , 1987 .

[8]  C. Hardy,et al.  The Use of Silviculture and Prescribed Fire to Manage Stand Structure and Fuel Profiles in a Multi-aged Lodgepole Pine Forest , 2006 .

[9]  F. H. Eyre,et al.  Forest cover types of the United States and Canada , 1980 .

[10]  R. D. Nyland Even- to uneven-aged: the challenges of conversion , 2003 .

[11]  G. D. Amman,et al.  Guidelines for reducing losses of lodgepole pine to the mountain pine beetle in unmanaged stands in the Rocky Mountains. , 1977 .

[12]  L. Safranyik Management of Lodgepole Pine to Reduce Losses From The Mountain Pine Beetle , 2002 .

[13]  J. Régnière,et al.  Climate Change and Bark Beetles of the Western United States and Canada: Direct and Indirect Effects , 2010 .

[14]  S. Arno Forest Fire History in the Northern Rockies , 1980, Journal of Forestry.

[15]  Robert S. Seymour,et al.  Maintaining Biodiversity in Forest Ecosystems: Principles of ecological forestry , 1999 .

[16]  S. Arno,et al.  Fire regimes of western larch – lodgepole pine forests in Glacier National Park, Montana , 1991 .

[17]  S. Mitchell,et al.  The retention system:reconciling variable retention with the principles of silvicultural systems , 2002 .

[18]  K. O’Hara,et al.  Leaf area and tree increment dynamics of even-aged and multiaged lodgepole pine stands in Montana , 1999 .

[19]  J. Agee Fire Ecology of Pacific Northwest Forests , 1993 .

[20]  M. Adams,et al.  Experimental forests and ranges of the USDA Forest Service , 2004 .

[21]  Klaus J. Puettmann,et al.  A Critique of Silviculture: Managing for Complexity , 2008 .

[22]  T. Swetnam,et al.  Warming and Earlier Spring Increase Western U.S. Forest Wildfire Activity , 2006, Science.

[23]  K. O’Hara Dynamics and Stocking-Level Relationships of Multi-Aged Ponderosa Pine Stands , 1996 .

[24]  G. D. Amman,et al.  The mountain Pine beetle in Lodgepole Pine forests. , 1970 .

[25]  Charles B. Halpern,et al.  Variable-retention harvests in the Pacific Northwest: A review of short-term findings from the DEMO study , 2009 .

[26]  J. Negrón,et al.  The Once and Future Forest: Consequences of Mountain Pine Beetle Treatment Decisions , 2014 .

[27]  Kevin L. O'Hara,et al.  The silviculture of transformation — a commentary , 2001 .

[28]  Monica G. Turner,et al.  Consequences of spatial heterogeneity for ecosystem services in changing forest landscapes: priorities for future research , 2012, Landscape Ecology.