DOI: 10.5061/dryad.8fb47
title: Data from: Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests

description: In evergreen tropical forests, the extent, magnitude, and controls on
 photosynthetic seasonality are poorly resolved and inadequately
 represented in Earth system models. Combining camera observations with
 ecosystem carbon dioxide fluxes at forests across rainfall gradients in
 Amazônia, we show that aggregate canopy phenology, not seasonality of
 climate drivers, is the primary cause of photosynthetic seasonality in
 these forests. Specifically, synchronization of new leaf growth with dry
 season litterfall shifts canopy composition toward younger, more light-use
 efficient leaves, explaining large seasonal increases (~27%) in ecosystem
 photosynthesis. Coordinated leaf development and demography thus reconcile
 seemingly disparate observations at different scales and indicate that
 accounting for leaf-level phenology is critical for accurately simulating
 ecosystem-scale responses to climate change.
description: K34_CfluxBFThe eddy flux data used in this paper for k34 site. The data are processed in the same way as Restrepo-Coupe et al. 2013. What drives the seasonality of photosynthesis across the Amazon basin? A cross-site analysis of eddy flux tower measurements from the Brasil flux network. Agricultural and forest meteorology, 182, 128-144.CAX_CfluxBFThe eddy flux data used in this paper for CAX site. The data are processed in the same way as Restrepo-Coupe et al. 2013. What drives the seasonality of photosynthesis across the Amazon basin? A cross-site analysis of eddy flux tower measurements from the Brasil flux network. Agricultural and forest meteorology, 182, 128-144.RJA_CfluxBFThe eddy flux data used in this paper for RJA site. The data are processed in the same way as Restrepo-Coupe et al. 2013. What drives the seasonality of photosynthesis across the Amazon basin? A cross-site analysis of eddy flux tower measurements from the Brasil flux network. Agricultural and forest meteorology, 182, 128-144Tapajos-K67 Camera_Part 1 (2010 Jan-Mar)The first part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Tapajos-K67 Camera_Part 2 (2010 Apr-Jun)The second part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Tapajos-K67 Camera_Part 3 (2010 Jul-Sep)The third part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site..Tapajos-K67 Camera_Part 4 (2010 Oct-Dec)The fourth part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Tapajos-K67 Camera_Part 5 (2011 Jan-Mar)The fifth part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Tapajos-K67 Camera_Part 6 (2011 Apr-Jun)The sixth part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Tapajos-K67 Camera_Part 7 (2011 Jul-Sep)The seventh part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Tapajos-K67 Camera_Part 8 (2011 Oct-Dec)The eighth part of k67 site near-surface camera data, which is used for deriving leaf phenology at k67 site.Phenocam_K34This is k34 near-surface camera image series, which is used for deriving leaf phenology at k34 site.Litterfall data at Manaus-k34 siteGround based litterfall measurements conducted at k34 site at monthly interval.Leaf level age-dependent Vcmax at Tapajos-k67 siteGround meaured leaf level age-dependent Vcmax at k67 site via leaf gas exchange measuremnets (by a handheld Licor 6400).