NDLI: Postfire Soil N Cycling in Northern Conifer Forests Affected by Severe, Stand-Replacing Wildfires

Content Provider	Springer Nature Link
Author	Smithwick, Erica A. H. Turner, Monica G. Mack, Michelle C. Chapin, F. Stuart
Copyright Year	2005
Abstract	Severe, stand-replacing fires affect large areas of northern temperate and boreal forests, potentially modifying ecosystem function for decades after their occurrence. Because these fires occur over large extents, and in areas where plant production is limited by nitrogen (N) availability, the effect of fire on N cycling may be important for long-term ecosystem productivity. In this article, we review what is known about postfire N cycling in northern temperate and boreal forests experiencing stand-replacing fires. We then build upon existing literature to identify the most important mechanisms that control postfire N availability in systems experiencing severe, stand-replacing fires compared with fires of lower severity. These mechanisms include changes in abiotic conditions caused by the opening of the canopy (for example, decreased LAI, increased solar radiation), changes in ground layer quantity and quality (for example, nutrient release, permafrost levels), and postfire plant and microbial adaptations affecting N fixation and N uptake (for example, serotiny, germination cues). Based on the available literature, these mechanisms appear to affect N inputs, internal N cycling, and N outputs in various ways, indicating that severe fire systems are variable across time and space as a result of complex interactions between postfire abiotic and biotic factors. Future experimental work should be focused on understanding these mechanisms and their variability across the landscape.
Starting Page	163
Ending Page	181
Page Count	19
File Format	PDF
ISSN	14329840
Journal	Ecosystems
Volume Number	8
Issue Number	2
e-ISSN	14350629
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-02-22
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	fire nitrogen nutrient cycling boreal temperate disturbance stand-replacing large infrequent disturbances (LIDs) Ecology Plant Sciences Zoology Environmental Management Geoecology/Natural Processes Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Ecology Environmental Chemistry Ecology, Evolution, Behavior and Systematics

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