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Chlorophyll Criteria based on SAV Minimum Light Habitat Requirements

Chlorophyll Criteria based on SAV Minimum Light Habitat Requirements. ca. 22% surface light for PH/MH ca. 13% for OH/TF => K d Z=1.5 PH/MH or 2.0 OH/TF. Four Factors Contribute to Water-column Light Attenuation. Water Colored dissolved organic matter Chlorophyll

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Chlorophyll Criteria based on SAV Minimum Light Habitat Requirements

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  1. Chlorophyll Criteria based on SAV Minimum Light Habitat Requirements • ca. 22% surface light for PH/MH • ca. 13% for OH/TF • => KdZ=1.5 PH/MH or 2.0 OH/TF

  2. Four Factors Contribute to Water-column Light Attenuation • Water • Colored dissolved organic matter • Chlorophyll • Suspended particulate matter

  3. Crudely, we can write Bay-wide Average Parameters

  4. Maximum allowable median Chl during SAV growing season Maximum allowable median Chl during SAV growing season Rearrange to Calculate Water Quality Threshold for SAV Survival

  5. Problems & Caveats • Application depth for water clarity criterion varies with location • Contribution of CDOM to light attenuation varies with location (scheduled for monitoring) • Optical properties of suspended particulate matter highly variable • Uncertain how to deal with bloom vs. chronic levels

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