Seasonal carbon dynamics and water fluxes in an Amazon rainforest

DSpace/Manakin Repository

Seasonal carbon dynamics and water fluxes in an Amazon rainforest

Citable link to this page


Title: Seasonal carbon dynamics and water fluxes in an Amazon rainforest
Author: Kim, Yeonjoo; Knox, Ryan G.; Longo, Marcos; Medvigy, David; Hutyra, Lucy; Pyle, Elizabeth; Wofsy, Steven Charles; Bras, Rafael L.; Moorcroft, Paul R

Note: Order does not necessarily reflect citation order of authors.

Citation: Kim, Yeonjoo, Ryan G. Knox, Marcos Longo, David Medvigy, Lucy R. Hutyra, Elizabeth H. Pyle, Steven C. Wofsy, Rafael L. Bras, and Paul R. Moorcroft. 2012. “Seasonal Carbon Dynamics and Water Fluxes in an Amazon Rainforest.” Global Change Biology 18 (4) (January 20): 1322–1334. doi:10.1111/j.1365-2486.2011.02629.x.
Access Status: Full text of the requested work is not available in DASH at this time (“dark deposit”). For more information on dark deposits, see our FAQ.
Full Text & Related Files:
Abstract: Satellite-based observations indicate that seasonal patterns in canopy greenness and productivity in the Amazon are negatively correlated with precipitation, with increased greenness occurring during the dry months. Flux tower measurements indicate that the canopy greening that occurs during the dry season is associated with increases in net ecosystem productivity (NEP) and evapotranspiration (ET). Land surface and terrestrial biosphere model simulations for the region have predicted the opposite of these observed patterns, with significant declines in greenness, NEP, and ET during the dry season. In this study, we address this issue mainly by developing an empirically constrained, light-controlled phenology submodel within the Ecosystem Demography model version 2 (ED2). The constrained ED2 model with a suite of field observations shows markedly improved predictions of seasonal ecosystem dynamics, more accurately capturing the observed patterns of seasonality in water, carbon, and litter fluxes seen at the Tapajos National Forest, Brazil (2.86°S, 54.96°W). Long-term simulations indicate that this light-controlled phenology increases the resilience of Amazon forest NEP to interannual variability in climate forcing.
Published Version: doi:10.1111/j.1365-2486.2011.02629.x
Citable link to this page:
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)


Search DASH

Advanced Search