OOS 26
Sustaining Forest Goods and Services In a Time Of Change: The Role Of Harvest Gaps In Northern Temperate Forest Regeneration and Diversity

Thursday, August 8, 2013: 8:00 AM-11:30 AM
101F, Minneapolis Convention Center
Organizer:
Christel C. Kern
Co-organizers:
Julia I. Burton and Patricia Raymond
Moderator:
Michael B. Walters
Although sustainable forest management has been a goal of silviculture for decades, the quest for such practices continues to be of high relevance nationally and internationally. At the global level, the United Nations named 2011 the International Year of Forests to bolster sustainable forest management worldwide. In North America, the National Report on Sustainability of U.S. Forests, just published in 2011, highlighted the need for further research, development, and application of sustainable forest management in the U.S. Changing climate and natural disturbance patterns, exotic species, ungulate herbivory, forest fragmentation and fragmentation, etc. continue to challenge conventional approaches to forest management, compelling practioners to seek sustainable management alternatives. Developing sustainable forest management practices for northern temperate forests, and more broadly multi-aged, mixed species forests, pose a significant management challenge. Over the past century, these forests have experienced significant diversity losses and, more recently, regeneration failures. To overcome this problem, historical and contemporary reference conditions as well as ecological theory, such as gap dynamics, provide a scientific framework to design sustainable management solutions. As such, conventional wisdom suggests that medium to large harvest gaps can be incorporated into light, partial harvests to increase the diversity of these forests. Yet, empirical data to support this idea are limited, especially in areas of elevated deer populations. This session examines the role of harvest gaps in tree regeneration and plant diversity and the efficacy of harvest gaps as a mechanism for the sustainable management of forest goods and services. Our goal is to produce a conceptual framework on tree regeneration and plant diversity response to harvest gap size, age, and structure by bringing together recent findings from harvest gap-centered research in northern temperate forests. The session will challenge conventional wisdom and more broadly highlight the tradeoffs that may occur between commodity focused objectives and sustainability of other ecosystem services. In addition, it will provide the synergy for a collaborative publication on harvest gaps of multi-aged, mixed species forests and general management recommendations for northern temperate forests.
8:00 AM
 Diversifying the composition and structure of managed, late-successional forests with harvest gaps: What is the optimal gap size?
Christel C. Kern, USDA Forest Service; University of Minnesota; Anthony W. D'Amato, University of Minnesota; Terry F. Strong, USDA Forest Service, Retired
8:20 AM
 Young seedling dynamics depend on harvest gap size and surface disturbance
John L. Willis, Michigan State University; Michael B. Walters, Michigan State University; Kurt W. Gottschalk, USDA Forest Service Northern Research Station
8:40 AM
 Influence of legacy-tree retention on regeneration dynamics and harvest opening persistence in northern hardwoods
Christopher R. Webster, Michigan Technological University; Sarah Klingsporn Poznanovic, Michigan Technological University; Joseph Bump, Michigan Technological University
9:00 AM
 Assessing the efficacy of natural disturbance-based harvest gaps at restoring old-growth composition and structure
Anthony W. D'Amato, University of Minnesota; Laura Reuling, University of Minnesota; Brian J. Palik, USDA Forest Service, Northern Research Station; Karl J. Martin, Wisconsin Department of Natural Resources
9:20 AM
 Experimental gaps in the Vermont Forest Ecosystem Management Demonstration Project: Effects on stand dynamics, salamanders, understory plants, and fungi
William S. Keeton, University of Vermont; Sarah E. Ford, University of Vermont; Nicholas C. Dove, University of Vermont; Kimberly J. Smith, University of Vermont; Heather C. McKenny, Yosemite National Park
9:40 AM
9:50 AM
 Influence of retention trees on regeneration dynamics in expanding-gap shelterwood treatments in the Acadian forest
Nathan E. Rutenbeck, University of Maine; Robert S. Seymour, University of Maine
10:10 AM
 Microclimate and regeneration discordance in harvest gaps of mixed-species stands
Patricia Raymond, Ministère des Ressources naturelles du Québec; Marcel Prévost, Ministère des Ressources naturelles du Québec
10:30 AM
 Sustaining forest diversity amidst the interacting forces of northern temperate forests
Alejandro A. Royo, USDA Forest Service; Timothy J. Nuttle, Civil & Environmental Consultants, Inc.; Mary B. Adams, USDA FS Timber and Watershed Laboratory; Walter P. Carson, University of Pittsburgh
10:50 AM
 Variation in biotic linkages with slope aspect in a temperate hardwood forest
Frank S. Gilliam, Marshall University; Radim Hédl, Institute of Botany; Marketa Chudomelová, Institute of Botany; Rebecca L. McCulley, University of Kentucky; Jim A. Nelson, University of Kentucky
11:10 AM
 Pattern of forest overstory retention, broad-scale environmental variation and species traits influence spatial patterning of understory vegetation after thinning
Julia I. Burton, Oregon State University; Lisa M. Ganio, Oregon State University; Klaus J. Puettmann, Oregon State University