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Extreme pCO2 Variability in a Macrotidal Eel Grass Meadow Mediated by Tidal and Diurnal Cycles
Salish Sea Ecosystem Conference
  • Brooke Love, Western Washington University
  • Colleen O'Brien, Eckerd College
  • Douglas Bulthuis, Padilla Bay National Estuarine Research Reserve (Agency : U.S.)
Session Title
Session S-05A: Frontiers of Ocean Acidification Research in the Salish Sea
Conference Track
Ocean Acidification
Conference Name
Salish Sea Ecosystem Conference (2014 : Seattle, Wash.)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Start Date
1-5-2014 10:30 AM
End Date
1-5-2014 12:00 PM
Abstract

It has been suggested that photosynthetic activity of macrophytes in coastal areas can decrease pCO2 and may provide areas of refuge for organisms sensitive to ocean acidification. To assess the effect of a large eel grass meadow on water chemistry, discreet samples were collected hourly over several 24 hour cycles in Padilla Bay, WA. Calculated pCO2 ranged from less than 100 ppm to greater than 700 ppm, often over the course of only a few hours. Aragonite saturation, DIC and pH were also highly variable. These data, weather station data and in-situ sensors(Padilla Bay National Estuarine Research Reserve) were used to develop a model that estimates pCO2 for the summer season. Tidal height and photosynthetically active radiation were the most significant predictors of pH and pCO2, with Salinity and DO. Model estimates suggest that an even wider range of pCO2 values are common in this estuary, especially in the early summer. Data from a mooring in 20 meters of water over a kilometer from the intertidal eel grass environment, provide some hints of the spatial extent of influence.

Rights
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.
Language
English
Format
application/pdf
Type
Text
Citation Information
Brooke Love, Colleen O'Brien and Douglas Bulthuis. "Extreme pCO2 Variability in a Macrotidal Eel Grass Meadow Mediated by Tidal and Diurnal Cycles" (2014)
Available at: http://works.bepress.com/brooke-love/2/