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Drivers of temporal variation in pelagic community respiration

Drivers of temporal variation in pelagic community respiration. Chris Solomon 3 Feb 2009. Respiration varies among lakes. Chl a. Respiration. DOC. Pace and Prairie 2005. What about temporal variation within lakes?. Drivers vary over time… …and R varies over time.

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Drivers of temporal variation in pelagic community respiration

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  1. Drivers of temporal variation in pelagic community respiration Chris Solomon 3 Feb 2009

  2. Respiration varies among lakes Chl a Respiration DOC Pace and Prairie 2005

  3. What about temporal variation within lakes? • Drivers vary over time… • …and R varies over time Staehr and Sand-Jensen 2007 Among lakes: 0.7 to 160 mmol O2 L-1 d-1(Pace and Prairie 2005) Within a lake: 1 to 400 mmol O2 L-1d-1(Staehr and Sand-Jensen 2007)

  4. What are the patterns and drivers of temporal variation in R? • How similar are time series of R across lakes? • What explains temporal variation in R? • How do relationships change across lake trophy gradients? • Rtot = RA + RH,autoch + RHalloch

  5. Interested in being involved? Comments and suggestions? Please let me know!!

  6. What data do we need? • High frequency: • DO • Water temperature • Wind speed • Irradiance (PAR) • Other: • Chl a • DOC and/or color • …

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