Data from: Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests
Data files
Jan 26, 2017 version files 6.90 GB
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CAX_CfluxBF.csv
65.56 MB
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K34_CfluxBF.csv
113.77 MB
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Leaf level age-dependent Vcmax at Tapajos-k67 site.xlsx
9.89 KB
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Litterfall data at Manaus-k34 site.xlsx
9.60 KB
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Phenocam_K34.zip
207.44 MB
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README_for_CAX_CfluxBF.txt
29.36 KB
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README_for_K34_CfluxBF.txt
29.74 KB
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README_for_Phenocam_K34.txt
2.01 KB
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README_for_RJA_CfluxBF.txt
29.87 KB
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README_for_Tapajos-K67 Camera_Part 1 (2010 Jan-Mar).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 2 (2010 Apr-Jun).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 3 (2010 Jul-Sep).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 4 (2010 Oct-Dec).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 5 (2011 Jan-Mar).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 6 (2011 Apr-Jun).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 7 (2011 Jul-Sep).txt
2.60 KB
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README_for_Tapajos-K67 Camera_Part 8 (2011 Oct-Dec).txt
2.60 KB
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RJA_CfluxBF.csv
58.39 MB
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Tapajos-K67 Camera_Part 1 (2010 Jan-Mar).zip
968.86 MB
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Tapajos-K67 Camera_Part 2 (2010 Apr-Jun).zip
986.85 MB
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Tapajos-K67 Camera_Part 3 (2010 Jul-Sep).zip
589.25 MB
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Tapajos-K67 Camera_Part 4 (2010 Oct-Dec).zip
1.01 GB
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Tapajos-K67 Camera_Part 5 (2011 Jan-Mar).zip
984.06 MB
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Tapajos-K67 Camera_Part 6 (2011 Apr-Jun).zip
699.39 MB
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Tapajos-K67 Camera_Part 7 (2011 Jul-Sep).zip
485.96 MB
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Tapajos-K67 Camera_Part 8 (2011 Oct-Dec).zip
727.58 MB
Abstract
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.