“…The most important routes of metal uptake by aquatic organisms are those from solution and from food. The knowledge on the predominant route of metal uptake, either from solution or from food, would be of benefit for estimating the usefulness of various organisms as biomonitors (Phillips and Rainbow 1993).…”
Section: Metal Uptake Into the Organismmentioning
confidence: 99%
“…The reason for the existence of different uptake mechanisms lies in the different chemical properties of two classes of metals (Nieboer and Richardson 1980;Phillips and Rainbow 1993).…”
Section: Metal Uptake Into the Organismmentioning
confidence: 99%
“…Thus, active ion pumps (Figure 7.2) are required for the movement of these ionic metals against concentration gradients across the hydrophobic membrane (Phillips and Rainbow 1993).…”
Section: Metal Uptake Into the Organismmentioning
confidence: 99%
“…Other elements tend to display intermediate partitioning, and conditions such as salinity and temperature are important in determining the chemical species present and the differences in partitioning between the solution and particulate phases in distinct environment (Phillips and Rainbow 1993).…”
“…The most important routes of metal uptake by aquatic organisms are those from solution and from food. The knowledge on the predominant route of metal uptake, either from solution or from food, would be of benefit for estimating the usefulness of various organisms as biomonitors (Phillips and Rainbow 1993).…”
Section: Metal Uptake Into the Organismmentioning
confidence: 99%
“…The reason for the existence of different uptake mechanisms lies in the different chemical properties of two classes of metals (Nieboer and Richardson 1980;Phillips and Rainbow 1993).…”
Section: Metal Uptake Into the Organismmentioning
confidence: 99%
“…Thus, active ion pumps (Figure 7.2) are required for the movement of these ionic metals against concentration gradients across the hydrophobic membrane (Phillips and Rainbow 1993).…”
Section: Metal Uptake Into the Organismmentioning
confidence: 99%
“…Other elements tend to display intermediate partitioning, and conditions such as salinity and temperature are important in determining the chemical species present and the differences in partitioning between the solution and particulate phases in distinct environment (Phillips and Rainbow 1993).…”
“…Sampling the water column for metals is difficult as contaminants are usually in very low concentrations (Phillips & Rainbow, 1993) and contaminants may vary widely with time (Phillips, 1980) . Furthermore, comparison of these results with those of previous authors is difficult as different seaweed species or different portions of the same species have been used .…”
The aim of this work is to describe changes in heavy metal concentrations in Ascophyllum nodosum from 1964 to 1994 . Samples were collected from three sites in the Firth of Clyde and analysed for zinc, manganese, iron, copper, lead and nickel . The results were analysed using the multivariate technique Principal Components Analysis (PCA) . At the Wemyss Bay site there was a trend towards increasing lead and nickel over the study period, which could not be accounted for by local industrial activity . At the Hunterston site, two groups were well separated by the PCA ordination, based on manganese and zinc concentrations, which corresponded to land reclamation activities in the area . The separation of samples at the Ardneil Bay site correlated well with copper concentration and this corresponded to the termination of industrial effluent with heavy copper loadings . Other changes in industrial effluent were also reflected in the Hunterston and Ardneil Bay site ordinations . The PCA technique highlighted the interplay between metals . The work demonstrated the potential for using multivariate analysis of seaweed metal concentrations in monitoring a posteriori the environmental impact of industrial change .
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ContentsList of Contributors xiii Preface xv Acknowledgements xviii Contents xi 7.4 The evolution of tolerance 7.4.1 Intrapopulation diversity 7.4.2 Interpopulation differentiation 7.4.3 The speed of adaptation 7.4.4 The costs of adaptation 7.4.5 The identification of tolerance genes 7.5 References 8 From Population Ecology to Socio-Economic and Human Health Issues 8.1 Introduction 8.1.1 Aims and objectives 8.1.2 The bio-socio-economic model 8.2 The fish sector of the European Union 8.2.1 Introduction 8.2.2 The Common Fisheries Policy (CFP) 8.2.3 The crisis in EU fisheries: interdependence or independence in relation to xenobiotic influences? 8.3 The quality of individual fish (intrinsic and extrinsic characteristics), scarcity and its effects on consumer health and behaviour 8.3.1 Intrinsic quality in fish 8.3.2 Extrinsic quality in fish 8.3.3 The fish trade and quality 8.4 Xenobiotic influences on fish quality 8.4.1 Ciguatoxin and red tides 8.4.2 Organochlorine pesticides 8.4.3 Heavy metals 8.4.4 The effects of hydrocarbons 8.5 Case studies 8.5.1 Oil spills 8.5.1.1 The Exxon Valdez oil spill 8.5.1.2 The Braer oil spill 8.5.1.3 The Sea Empress oil spill 8.5.2 Claims and compensations 8.6 Conclusions 8.7 References 9 The Role of Modelling in Fish and Fishery Ecotoxicology 9.1 Introduction 9.2 Summary of the effects of pollution on fish 9.2.1 Cellular and molecular responses 9.2.2 Damage to DNA 9.2.3 Physiological responses xii Contents 9.2.4 Immune system responses 9.2.5 Reproductive system responses 9.2.6 Population responses 9.2.7 Population genetic responses 9.2.8 Socio-economic response 9.3 The role of modelling of pollution impacts on fish and fisheries 9.3.1 Individual-based models 9.3.2 Population-based models 9.3.3 Ecosystem-based models 9.3.4 New bioeconomic models incorporating sublethal pollution impacts 9.3.5 The validity of modelling 9.4 Gaps in current understanding 9.4.1 Molecular and cellular response and genotoxicity 9.4.2 Molecular and cellular response and physiological processes 9.4.3 Molecular and cellular response and immune effects 9.4.4 Molecular and cellular response and reproduction 9.4.5 Population responses 9.4.6 Population genetic responses 9.4.7 Socio-economic impact 9.
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