Abstract
Stream water quality data and atmospheric data were collected in a sub-basin of the Rio Napo in the Amazon rainforest of Peru. Previous investigations of a low-gradient stream indicated a diurnal dissolved oxygen curve that shows deoxygenation during daylight hours and reaeration during night hours. Data were collected to determine possible and most-probable causes of this unexpected pattern. Results of the investigation indicate that deoxygenation occurs during daylight hours because of the increase in stream temperature. Three agents of nighttime reaeration were found. The first and most significant was reaeration during rain events. Subsequent to the rain event, flow from a groundwater seep provided reaerated water to the site. In the absence of sufficient ground-water flow, nighttime condensate from the humid subcanopy atmosphere with nighttime drop in air temperature provided a source of well aerated water to the system. [Key words: water quality, dissolved oxygen, rainforest, Amazon, Peru.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
