Forest-landscape structure mediates effects of a spruce bark beetle ( Dendroctonus rufipennis ) outbreak on subsequent likelihood of burning in Alaskan boreal forest

Published Date
Forest Ecology and Management, 2016

¹Scenarios Network for Alaska and Arctic Planning, University of Alaska Fairbanks, Fairbanks, AK, 99775-6100, USA
²Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775-6100, USA
³Department of Economics, University of Montana, Missoula, MT 59812-5472, USA
⁴Department of Forest Sciences, University of Alaska Fairbanks, Fairbanks, AK 99775-6100, USA
⁵Current address, Landscape and Ecosystem Ecology Lab, Department of Zoology, University of Wisconsin, Madison, Madison, WI 53706-1313

Author 
Winslow D. Hansen,   F. Stuart Chapin,   Helen T. Naughton,   T. Scott Rupp,   David Verbyla

Abstract

Characterizing how variation in forest landscape structure shapes patterns of natural disturbances and mediates interactions between multiple disturbances is critical for anticipating ecological consequences of climate change in high-latitude forest ecosystems. During the 1990s, a massive spruce bark beetle ( Dendroctonus rufipennis ) outbreak took place in boreal spruce forest on the Kenai Peninsula, Alaska allowing us to ask 1) How did the extent and duration of bark beetle outbreak differ between a homogenous landscape dominated by white spruce ( Picea glauca ), and a landscape in which white spruce and black spruce ( Picea mariana ) were intermixed? (2) How has the occurrence and duration of bark beetle outbreak influenced the likelihood of subsequent burning in these two landscapes?...

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