Water balance, nutrient and carbon export from a heath forest catchment in central Amazonia, Brazil

Carbon storage values in the Amazon basin have been studied through different approaches in the last decades in order to clarify whether the rainforest ecosystem is likely to act as a sink or source for carbon in the near future. This water balance, dissolved organic carbon (DOC) and nutrient export...

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Bibliographic Details
Published in:Hydrological processes 2015-08, Vol.29 (17), p.3633-3648
Main Authors: Zanchi, Fabrício B., Waterloo, Maarten J., Tapia, Andrés Peralta, Alvarado Barrientos, Maria S., Bolson, Marcos A., Luizão, Flávio J., Manzi, Antônio O., Dolman, Albertus J.
Format: Article
Language:English
Subjects:
Amazon Basin
Amazonia
Carbon
DOC export
evapotranspiration
Exports
Forests
groundwater
heath forest
International trade
Rainfall
River basins
river runoff
water balance
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Summary:Carbon storage values in the Amazon basin have been studied through different approaches in the last decades in order to clarify whether the rainforest ecosystem is likely to act as a sink or source for carbon in the near future. This water balance, dissolved organic carbon (DOC) and nutrient export study were carried out in a micro‐scale heath forest (Campina) catchment in central Amazonia, Brazil. For a 1‐year study period (18 March 2007 until 19 March 2008), rainfall amounted to 3054 mm; of which, 1532 mm was evaporated by the forest (4.1 mm day−1). Rainfall interception loss amounted to 15.6% of gross rainfall. Surface runoff amounted to 485 mm, whereas another 1071 mm was discharged as regional groundwater outflow. Accumulated DOC exports in surface runoff amounted to 15.3 g m−2 year−1, whereas the total carbon exported was 55.9 g m−2. This is much higher than that observed for a nearby tall rainforest catchment in central Amazonia (DOC export 
ISSN:0885-6087
1099-1085
DOI:10.1002/hyp.10458