Advances in marine ecotoxicology: laboratory tests versus field assessment data on sediment quality studies
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| Format: | Artículo científico |
| Language: | en |
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Universidad Autónoma de Baja California
2000
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| author | M. Conradi |
| author_facet | M. Conradi |
| contents | Advances in marine ecotoxicology: laboratory tests versus field assessment data on sediment quality studies M. Conradi T. A. DelValls Ciencias de la Tierra ecotoxicology toxicity tests integrative assessment macrobenthic structure parameters Ecotoxicology is concerned with describing and predicting the behaviour of substances in theenvironment and the response of biological systems, and ultimately with assessing the risks associatedwith emissions. These assessments are complicated from a basic-science point of view and they should becarried out by using integrative assessments. Contaminated sediments are a significant regulatory issuewith important science implications. Determining the impact of contaminated sediments is a key elementin environmental risk assessment and management of water resources. Tests for ecotoxicologyassessment in sediments may be conducted either in the laboratory or field. Both approaches haveadvantages and disadvantages. Data from different studies performed in laboratory conditions and in fieldassessments are compared here. The principal advantages of sediment toxicity tests in the laboratory arethe possibility to standardize methodologies and to provide direct evidence of sediments as causativeagents of toxicity; however, the results are difficult to extrapolate to the field. The results obtained hereshow the importance of the end point selected in each test and the variability of the responses. Therefore,the results highlight the necessity and importance of the battery-of-tests approach for toxicity assessment.On the other hand, field sediment toxicity has the advantage of empirical evidence and strong correlativeindication of the contaminants responsible for toxicity; however, the results obtained from these tests arehighly affected by casualty, so it is not possible to isolate a single causative factor. When structuralmacrofaunal parameters are incorporated into field tests, the results are even more difficult to interpret,because their parameters can be mainly related to organic enrichment or another kind of natural stress,such as salinity gradient, tidal stress conditions, etc. 2000 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48026103 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.26 |
| format | Artículo científico |
| id | redalyc_48026103 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Universidad Autónoma de Baja California |
| spellingShingle | Advances in marine ecotoxicology: laboratory tests versus field assessment data on sediment quality studies M. Conradi Ciencias de la Tierra ecotoxicology toxicity tests integrative assessment macrobenthic structure parameters Advances in marine ecotoxicology: laboratory tests versus field assessment data on sediment quality studies M. Conradi T. A. DelValls Ciencias de la Tierra ecotoxicology toxicity tests integrative assessment macrobenthic structure parameters Ecotoxicology is concerned with describing and predicting the behaviour of substances in theenvironment and the response of biological systems, and ultimately with assessing the risks associatedwith emissions. These assessments are complicated from a basic-science point of view and they should becarried out by using integrative assessments. Contaminated sediments are a significant regulatory issuewith important science implications. Determining the impact of contaminated sediments is a key elementin environmental risk assessment and management of water resources. Tests for ecotoxicologyassessment in sediments may be conducted either in the laboratory or field. Both approaches haveadvantages and disadvantages. Data from different studies performed in laboratory conditions and in fieldassessments are compared here. The principal advantages of sediment toxicity tests in the laboratory arethe possibility to standardize methodologies and to provide direct evidence of sediments as causativeagents of toxicity; however, the results are difficult to extrapolate to the field. The results obtained hereshow the importance of the end point selected in each test and the variability of the responses. Therefore,the results highlight the necessity and importance of the battery-of-tests approach for toxicity assessment.On the other hand, field sediment toxicity has the advantage of empirical evidence and strong correlativeindication of the contaminants responsible for toxicity; however, the results obtained from these tests arehighly affected by casualty, so it is not possible to isolate a single causative factor. When structuralmacrofaunal parameters are incorporated into field tests, the results are even more difficult to interpret,because their parameters can be mainly related to organic enrichment or another kind of natural stress,such as salinity gradient, tidal stress conditions, etc. 2000 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48026103 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.26 |
| title | Advances in marine ecotoxicology: laboratory tests versus field assessment data on sediment quality studies |
| topic | Ciencias de la Tierra ecotoxicology toxicity tests integrative assessment macrobenthic structure parameters |
| url | https://www.redalyc.org/articulo.oa?id=48026103 |