Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives...
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Transcript of Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives...
![Page 1: Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives Design a multi-year monitoring plan to meet objectives.](https://reader036.fdocuments.net/reader036/viewer/2022070400/56649f0d5503460f94c21569/html5/thumbnails/1.jpg)
Monitoring Recommendations
• Clarify and refine key regulatory and management monitoring objectives
• Design a multi-year monitoring plan to meet objectives
• Not necessarily more expensive• More value per dollar
![Page 2: Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives Design a multi-year monitoring plan to meet objectives.](https://reader036.fdocuments.net/reader036/viewer/2022070400/56649f0d5503460f94c21569/html5/thumbnails/2.jpg)
Likely Management Questions
• Q1: Does the project negatively impact existing aquatic and wetland habitats? Monitoring: Pre- and post-project
comparisons of existing conditions
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Monitoring Recommendations
• Q2: Do the restored habitats increase the risk of Hg bioaccumulation? Monitoring: Compare habitat types
within breached areas to the ambient condition of same types of habitats within the North Bay.
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Q1: Impact to Existing Habitats?
• Marsh restoration does not appear to affect risk in subtidal habitats adjacent to marsh (see right)
• Risk to adjacent marsh habitats is unknown
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Q2: Do Restored Habitats increase Risk?
• Pond 2A restored in 1995
• MeHg in subtidal food web is typical of North Bay region
• MeHg in restored marsh food web is unknown
![Page 6: Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives Design a multi-year monitoring plan to meet objectives.](https://reader036.fdocuments.net/reader036/viewer/2022070400/56649f0d5503460f94c21569/html5/thumbnails/6.jpg)
Use Biosentinels to Standardize
• These comparisons should be based on the same biosentinel species for each habitat type that is monitored shallow subtidal
intertidal aquatic
intertidal marsh
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Silversides Excellent Subtidal Biosentinel
• Bay margin, large sloughs, and managed ponds
![Page 8: Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives Design a multi-year monitoring plan to meet objectives.](https://reader036.fdocuments.net/reader036/viewer/2022070400/56649f0d5503460f94c21569/html5/thumbnails/8.jpg)
Add Marsh Biosentinels
• Silversides, and other transient fish, do not provide information about Hg risk in marsh
• Assess bioaccumulation in tidal marsh • Does not need to increase overall cost.
Prioritize based on management questions and what is already known.
![Page 9: Monitoring Recommendations Clarify and refine key regulatory and management monitoring objectives Design a multi-year monitoring plan to meet objectives.](https://reader036.fdocuments.net/reader036/viewer/2022070400/56649f0d5503460f94c21569/html5/thumbnails/9.jpg)
Small fish indicate subtidal Other indicators for marsh risk
Small fish
Song sparrow
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Is Winter Monitoring Necessary?
• How do we use results of winter fish Hg concentrations in management decisions?
• Lower risk to wildlife in winter, because birds are not breeding
• Lower biomass of small fish in winter, so less important in the food web
• Save costs by eliminating winter monitoring, in the absence of a specific management question?
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For project report and data:http://www.sfei.org/projects/NBaySmallFishHg
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Thank You
• Karen Taylor, CDFG• Tom Gandesbury and Betsy Wilson,
State Coastal Conservancy• Project collaborators – Darell
Slotton, Shaun Ayers, Letitia Grenier• John Ross, Cristina Grosso, Don Yee,
April Robinson, Josh Collins, SFEI• The California State Coastal
Conservancy and the San Francisco Foundation