English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Rates of change in intrinsic water use efficiency ( W ) of trees relative to those in atmospheric [CO 2 ] ( c  a ) have been mostly assessed via short-term studies (e.g., leaf analysis, flux analysis) and/or step increases in  c  a  (e.g., FACE studies). Here we use compiled data for abundances of carbon isotopes in tree stems to show that on decadal scales, rates of change ( dW/dc  a ) vary with location and rainfall within the global tropics. For the period 1915–1995, and including corrections for mesophyll conductance and photorespiration,  dW/dc  a  for drier tropical forests (receiving ~ 1000 mm rainfall) were at least twice that of the wettest (receiving ~ 4000 mm). The data also empirically confirm theorized roles of tropical forests in changes in atmospheric  13 C/ 12 C ratios (the  13 C Suess Effect). Further formal analysis of geographic variation in decade-to-century scale  dW/dc  a  will be needed to refine current models that predict increases in carbon uptake by forests without hydrological cost.

Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests