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Temporal Variation in Pelagic Community Respiration: Patterns, Drivers, and Relationships

Explore the drivers of temporal variation in pelagic community respiration across lakes, analyzing patterns and relationships over time. Investigate the similarities in respiration time series among lakes and the factors explaining its fluctuations. Understand how these dynamics change along lake trophy gradients. Get involved and share your comments and suggestions for this research. High-frequency data required includes dissolved oxygen, water temperature, wind speed, and irradiance (PAR), along with other factors like chlorophyll-a and dissolved organic carbon/color.

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Temporal Variation in Pelagic Community Respiration: Patterns, Drivers, and Relationships

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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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