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Community Ecology

, Volume 14, Issue 2, pp 208–218 | Cite as

Historical links and new frontiers in the study of forest-atmosphere interactions

  • L. C. R. SilvaEmail author
  • M. Anand
Article

Abstract

Forest biomes have expanded and contracted in response to past climate fluctuations, but it is not clear how they will respond to human-induced atmospheric change. We provide a review of the literature, describing historical links between biogeographical and atmospheric patterns, comparing characteristics of forest biomes and describing expected changes in climate forcings from observed range shifts. Over the geological history, climate fluctuations prompted changes in forest distribution that, in turn, stabilized the atmosphere. Over the past century, warming-induced stress has caused widespread declines of mature forests, but new forests have expanded into open areas of boreal, tropical and temperate regions. Historically, forest expansion happened at much faster rates in cold than in warm regions. Across biomes, species interactions control the use of limiting resources, regulating community dynamics and expansion rates in response to climate variability. Modern impacts of land use change on the distribution of forest biomes are well understood, but the expansion of new forests and their role in stabilizing the atmosphere are yet to be accounted for in global models. Expansion of tropical and temperate forests would yield a negative climate forcing through increased carbon sequestration and evaporative cooling, but in the boreal region forest expansion could amplify climate warming due to changes in albedo. Although qualitative descriptions of forest-atmosphere interactions are possible based on existing records, the net climate forcing from forest range shifts remains uncertain. Three critical gaps in knowledge hinder rigorous evaluations of causality necessary to probe for linkages between climatic and biogeographical patterns: (i) reconstructions of vegetation dynamics have not sufficiently represented warm biomes; (ii) climate and vegetation dynamics are typically assessed at non-comparable scales; and (iii) single-proxies are normally used to simultaneously infer changes in climate and vegetation distribution, leading to redundancy in interpretation. Addressing these issues would improve our ability to decipher past and predict future outcomes of forest-atmosphere interactions.

Keywords

Anthropocene Climate change Forest migration Paleoecology Soil-plant-atmosphere interactions 

Abbreviations

NPP

Net primary productivity

YBP

year before present

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Copyright information

© Akadémiai Kiadó, Budapest 2013

Authors and Affiliations

  1. 1.Global Ecological Change Laboratory, School of Environmental SciencesUniversity of GuelphGuelphCanada
  2. 2.Biogeochemistry and Nutrient Cycling Laboratory, Department of Land Air and Water ResourcesUniversity of California DavisUSA

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