UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Influences of Forest Structure, Climate and Species Composition on Tree Mortality across the Eastern US

Lines, ER; Coomes, DA; Purves, DW; (2010) Influences of Forest Structure, Climate and Species Composition on Tree Mortality across the Eastern US. PLoS ONE , 5 (10) , Article e13212. 10.1371/journal.pone.0013212. Green open access

[thumbnail of journal.pone.0013212.pdf]
Preview
PDF
journal.pone.0013212.pdf

Download (1MB)

Abstract

Few studies have quantified regional variation in tree mortality, or explored whether species compositional changes or within-species variation are responsible for regional patterns, despite the fact that mortality has direct effects on the dynamics of woody biomass, species composition, stand structure, wood production and forest response to climate change. Using Bayesian analysis of over 430,000 tree records from a large eastern US forest database we characterised tree mortality as a function of climate, soils, species and size (stem diameter). We found (1) mortality is U-shaped vs. stem diameter for all 21 species examined; (2) mortality is hump-shaped vs. plot basal area for most species; (3) geographical variation in mortality is substantial, and correlated with several environmental factors; and (4) individual species vary substantially from the combined average in the nature and magnitude of their mortality responses to environmental variation. Regional variation in mortality is therefore the product of variation in species composition combined with highly varied mortality-environment correlations within species. The results imply that variation in mortality is a crucial part of variation in the forest carbon cycle, such that including this variation in models of the global carbon cycle could significantly narrow uncertainty in climate change predictions.

Type: Article
Title: Influences of Forest Structure, Climate and Species Composition on Tree Mortality across the Eastern US
Open access status: An open access version is available from UCL Discovery
DOI: 10.1371/journal.pone.0013212
Publisher version: http://dx.doi.org/10.1371/journal.pone.0013212
Language: English
Additional information: © 2010 Lines et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
URI: https://discovery.ucl.ac.uk/id/eprint/1394862
Downloads since deposit
83Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item