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Historic patterns of deposition and biomagnification of mercury in selected wetland systems
Table of Contents
Abstract
Acknowledgements
Table of Contents
List of Tables
List of Figures
List of Abbreviations
List of Symbols
1 Introduction
1.1 Use of Mercury
1.2 Mercury in the Environment
1.3 Bioaccumulation and Biomagnification
1.4 Research Objectives
2 Correspondence Between Lake Sedimentary Records and Long Term Databases for Mercury: A Lake Erie Test Case
Abstract
2.1 Introduction
2.2 Methods
2.2.1 Site Description of Lake Erie
2.2.2 Sediment Coring in Lake Erie
2.2.3 Dating of the 1995 Lake Erie Sediment Cores
2.2.4 Total Mercury in 1995 Lake Erie Sediment Cores
2.2.5 Historical Lake Erie Core Data
2.2.6 Records From Long Term Databases
2.2.7 Historical Consumption of Mercury by the Chlor-Alkali Industry: “Mercury Input”
2.2.8 Historical Mercury in Walleye Tissue: “Mercury Output”
2.3 Results and Discussion
2.3.1 Chronology of 1995 Sediment Cores
2.3.2 Total Mercury in 1995 Cores
2.3.3 Comparison of 1995 and 1971 Cores
2.3.4 Relationship of Mercury Accumulation Rates in Sediment to Historical Databases
2.3.4.1 Historical Consumption of Mercury by the Chlor-Alkali Industry: “Mercury Input”
2.3.4.2 Historical Consumption of Mercury by the Chlor-Alkali Industry: “Mercury Output”
2.4 Summary and Conclusions
3 Mercury Accumulation in Sediment Cores and Along Food Chains in Two Regions of the Brazilian Pantanal
Abstract
3.1 Introduction
3.2 Methods
3.2.1 Site Description
3.2.2 Sample Collection
3.2.3 Dating of Sediment Cores
3.2.4 Mercury Analysis
3.3 Results and Discussion
3.3.1 Sedimentary Records of Mercury Deposition
3.3.2 Mercury Levels in Surface Sediments and Biota
3.4 References
4 Organic Mercury Biomagnification in Food Webs in the Wetlands of the Northern Pantanal, Brazil and Western Basin of Lake Erie
Abstract
4.1 Introduction
4.2 Materials and Methods
4.2.1 Site Descriptions
4.2.1.1 Lake Erie Marsh
4.2.1.2 Northern Pantanal
4.2.2 Selected Organisms
4.2.3 Mercury Analyses
4.2.3.1 Total Mercury
4.2.3.2 Methyl Mercury
4.2.4 Statistical Analysis
4.3 Results and Discussion
4.3.1 Lake Erie East Marsh Food Web
4.3.2 Northern Pantanal Marsh Food Web
4.3.3 Comparing Pantanal and East Marsh
4.3.4 Biomagnification Factors
4.3.5 Relationship Between Fish Length and Mercury Content
4.4 Summary and Conclusions
5 Synthesis of Literature on the Impact of Selective Predation on Biomagnification Rates – Suggestions for Future Research
Abstract
5.1 Introduction
5.1.1 Predator Mercury Burden Increases With Age/ Size
5.1.2 Predator Mercury Burden is Correlated With Mercury in Food
5.1.3 Mercury Impacts Behavior
5.1.4 Selective Predation
5.1.5 Linking Mercury, Selective Predation and Biomagnification
5.2 Suggested Studies
5.2.1 Short Term Lab Study
5.2.2 Longer Term Lab Study
5.2.3 Field Study
5.3 Summary
6 Summary and Conclusions
References Bài viết liên quan
