Contaminant Concentrations in Fish: 2000

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Contaminant Concentrations in Fish 2000

• Ben Greenfield and Jay Davis SFEI

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This talk includes the work of Marco Sigala,
Cassandra Roberts, and Rusty Fairey Moss Landing
Marine Labs David Crane, Kathleen Regalado CDFG
Water Pollution Control Lab John Wilcockson EVS
Environment Consultants Fred Hetzel SFB Regional
Water Quality Control Board Patricia Chambers,
Jay Davis, Ben Greenfield, Cristina Grosso, Jon
Leatherbarrow, John Ross, and Eric Wittner San
Francisco Estuary Institute
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Fish Monitoring Goals

• Status
• Human health advisories
• Trends
• Spatial Patterns
• Special Study Goals
• Mechanisms

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Contaminant Concentrations in Fish
2000 Chemical Sampling Special
Studies Organochlorines Seasonal Croaker
Chemistry PCBs DDTs Food Web
Study Chlordanes Gut Contents Dieldrin
PCB Food Web Model Dioxins
PBDEs Stable Isotopes Trace Metals
Biomarkers Mercury Selenium Crabs and
Clams
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Focus on Species Consumed by Humans or Useful
Spatial Indicator Species
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(All photos courtesy of Cassandra Roberts and
Marco Sigala, MLML)
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Fish Monitoring Goals

• Status
• Human health advisories
• Trends
• Spatial Patterns
• Special Study Goals
• Mechanisms

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PCB Concentrations in San Francisco Bay Fish 2000
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Mercury Concentrations in San Francisco Bay
Fish 2000
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Percent of Fish Samples That Are Above Screening
Values
Contaminant N Percent Above
PCBs 80 90
Mercury 134 38
Dieldrin 80 19
Selenium 12 17
DDTs 80 4
Chlordanes 80 0
(Screening values from Brodberg and Pollock 1999)
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Fish Monitoring Goals

• Status
• Human health advisories
• Trends
• Spatial Patterns
• Special Study Goals
• Mechanisms

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Seasonal Variation In White Croaker PCBs 2000
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Fish Monitoring Goals

• Status
• Human health advisories
• Trends
• Spatial Patterns
• Special Study Goals
• Mechanisms

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Fish Monitoring Goals

• Status
• Human health advisories
• Trends
• Special Study Goals
• Mechanisms

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Special Study 1 Contaminant Mapping In the
Estuary
(Data from RMP and BPTCP plotted by Eric Wittner,
SFEI)
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Special Study 2 Field Study Of Food Web Uptake
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Special Study 3 A PCB Food Web Model
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