Rate of tree carbon accumulation increases continuously with tree size

  title={Rate of tree carbon accumulation increases continuously with tree size},
  author={Nathan L. Stephenson and A. J. Das and Richard Condit and Sabrina E. Russo and Patrick J. Baker and Noelle G. Beckman and David Anthony Coomes and Emily R. Lines and William K. Morris and Nadja R{\"u}ger and Esteb{\'a}n {\'A}lvarez and Cecilia Blundo and Sarayudh Bunyavejchewin and George B. Chuyong and Stuart J. Davies and Alexandra Duque and Corneille E N Ewango and Olivier Flores and Jerry F. Franklin and H. Ricardo Grau and Zhang Hao and Mark E. Harmon and Stephen P. Hubbell and David Kenfack and Y. Lin and Jean-Remy Makana and Agustina Malizia and Lucio Ricardo Malizia and Robert J. Pabst and Nantachai Pongpattananurak and Sheng‐Hsin Su and I Fang Sun and S. Tan and Duncan Thomas and P. J. van Mantgem and X. K. Wang and Susan K. Wiser and Miguel A. Zavala},
Forests are major components of the global carbon cycle, providing substantial feedback to atmospheric greenhouse gas concentrations. Our ability to understand and predict changes in the forest carbon cycle—particularly net primary productivity and carbon storage—increasingly relies on models that represent biological processes across several scales of biological organization, from tree leaves to forest stands. Yet, despite advances in our understanding of productivity at the scales of leaves… 

Carbon stocks and accumulation rates in Pacific Northwest forests: role of stand age, plant community, and productivity

Examining measured change in live and dead woody C pools on Pacific Northwest National Forest lands suggests that old-growth and large trees are important C stocks, but they play a minor role in additional C accumulation.

Sustained carbon uptake in a mixed age southern conifer forest

Key messageLarger trees accumulate more carbon but have lower growth rates per unit biomass. Nevertheless, large trees are a vital part of the carbon cycle of this mixed age forest.AbstractGlobally,

Implications of size-dependent tree mortality for tropical forest carbon dynamics.

A theory-based framework is proposed that abiotic drivers of tree mortality-particularly drought, wind and lightning-regulate tropical forest carbon cycling via their disproportionate effects on large trees and could rapidly and lastingly reduce tropical forest biomass stocks.

The persistence of carbon in the African forest understory

The smaller trees that make up the understory in African tropical forests store their carbon longer as compared to sub-canopy and canopy trees and they represent a disproportionately large share of the carbon sink, in spite of their small size.

Distribution of biomass dynamics in relation to tree size in forests across the world.

Tree size shapes forest carbon dynamics and determines how trees interact with their environment, including a changing climate. Here, we conduct the first global analysis of among-site differences in

Carbon Sequestration in Mixed Deciduous Forests: The Influence of Tree Size and Species Composition Derived from Model Experiments

Forests play an important role in climate regulation due to carbon sequestration. However, a deeper understanding of forest carbon flux dynamics is often missing due to a lack of information about

Evidence for environmentally enhanced forest growth

The results provide the first ground-based evidence that global environmental changes can increase C sequestration in forests on a broad geographic scale and imply that both the traits and age of trees regulate the responses of forest growth to environmental changes.

The limited contribution of large trees to annual biomass production in an old-growth tropical forest.

A low net carbon uptake of old-growth forests in comparison to that of logged forests is suggested and Tropical forests that reach a successional stage with relatively high density of large trees progressively cease to be carbon sinks as large trees contribute sparsely or even negatively to the carbon uptake at the stand level.

Scaling nitrogen retention from trees to forests through succession

We seek to understand how the ability of trees to acquire and retain nitrogen (N) changes throughout their lifetimes. This capacity enables trees to act as carbon (C) sinks individually and



Tree allometry and improved estimation of carbon stocks and balance in tropical forests

A critical reassessment of the quality and the robustness of these models across tropical forest types, using a large dataset of 2,410 trees ≥ 5 cm diameter, directly harvested in 27 study sites across the tropics, is provided.

Are old forests underestimated as global carbon sinks?

Old forests are important carbon pools, but are thought to be insignificant as current atmospheric carbon sinks. This perception is based on the assumption that changes in productivity with age in

Growth Strategies of Tropical Tree Species: Disentangling Light and Size Effects

Overall, tree size was less important for growth than light and about half the species were predicted to grow faster in diameter when bigger or smaller, respectively, and together light availability and tree diameter only explained on average 12% of the variation in growth rates.

Capacity of old trees to respond to environmental change.

This work addresses the question of whether old trees have already responded to the rapid rise in [CO2] occurring over the past 150 years, and suggests the potential for continued growth in old trees as a function of continued global climate change.

Forest turnover rates follow global and regional patterns of productivity.

Using a global database, it is found that forest turnover rates parallel broad-scale patterns of net primary productivity and are broadly similar to the patterns of turnover in populations of plant organs (leaves and roots) found in other studies.

A Large and Persistent Carbon Sink in the World’s Forests

The total forest sink estimate is equivalent in magnitude to the terrestrial sink deduced from fossil fuel emissions and land-use change sources minus ocean and atmospheric sinks, with tropical estimates having the largest uncertainties.

Photosynthetic capacity peaks at intermediate size in temperate deciduous trees.

  • S. Thomas
  • Environmental Science
    Tree physiology
  • 2010
It is argued that ontogenetic increases in photosynthetic capacity and related traits early in tree ontogeny are general among relatively shade-tolerant tree species that have a low capacity for leaf-level acclimation, as are declines in this set of traits late in treeOntario, Canada.

Tree Size- and Age-Related Changes in Leaf Physiology and Their Influence on Carbon Gain

More integrated studies that consider the simultaneous roles of leaf structure, chemistry and stomatal and mesophyll factors are needed to disentangle and assign importance to the various factors responsible for decreases in carbon gain with tree age and size.

Allometric scaling of production and life-history variation in vascular plants

A prominent feature of comparative life histories is the well documented negative correlation between growth rate and life span. Patterns of resource allocation during growth and reproduction reflect