Seasonal variations in the net ecosystem CO2 exchange of a mature Amazonian transitional tropical forest (cerradão)
Dry season
Wet season
Tropical rain forest
Ecotone
Seasonality
Tropical forest
Tropical savanna climate
DOI:
10.1046/j.1365-2435.2001.00535.x
Publication Date:
2003-03-11T20:47:18Z
AUTHORS (6)
ABSTRACT
Summary Tower‐based eddy covariance and measurements of the vertical CO 2 concentration gradient within canopy were used to quantify seasonal variations in net ecosystem exchange (NEE) a 28–30 m tall transitional tropical forest (cerradão). The study was conducted near city Sinop, Mato Grosso, Brazil (11°24·75′ S; 55°19·50′ W), which is located ecotone two major regional types South America (tropical rainforest savanna). NEE during dry season (August–September) balance, but transition period between wet seasons (October–November) cerradão stand became source 50–150 mmol −2 day −1 atmosphere. Measurements (February, April) indicate that sink −55 −102 . more similar season, reported for savanna. data suggest rainfall have important implications pattern cerradão.
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