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Bivalve Monitoring: Figure 4.23

Contents
1. Introduction
2. Water Monitoring
3. Sediment Monitoring
4. Bivalve Monitoring
  4.1 Background
  4.2 Accumlation Factors
  4.3 Guidelines
  4.4 Biological Condition & Survival
  4.5 Trends
  4.6 Discussion
  4.7 References
5. Condition of the Estuary
6. Description of Methods
7. QA Tables
8. Data Tables

 

Tables

4.1 Tissue Guidelines

 

Figure 4.23. Lead accumulation or depuration in parts per million dry weight (ppm) in three transplanted bivalve species for twelve sampling periods from 1993-1998. Initial (T-0) concentrations are subtracted from tissue concentrations after retrieval to give concentrations accumulated or depurated (negative value) during deployment in the Estuary. Bars indicate the range of values of all stations where species were deployed. Note different y-axis scales. means no analyzed data available.

Figures

 

4.1 Arsenic
4.2 Cadmium
4.3 Chromium
4.4 Copper
4.5 Lead
4.6 Mercury
4.7 Nickel
4.8 Selenium
4.9 Silver
4.10 Tributyltin

 

 

4.11 Zinc
4.12 Total PAH
4.13 Total PCB
4.14 Total DDT
4.15 Total Chlordane
4.16 Dieldrin
4.17 Survival
4.18 Condition Indices
4.19 Arsenic Trends
4.20 Cadmium Trends

 

 

4.21 Chromium Trends
4.22 Copper Trends
4.23 Lead Trends
4.24 Mercury Trends
4.25 Nickel Trends
4.26 Selenium Trends
4.27 Silver Trends
4.28 Zinc Trends
4.29 PAH Trends
4.30 PCB Trends
4.31 DDT Trends

 

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