8 Result(s)
within
Ralph T. Clarke
Applied Ecology
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Chapter
Errors and uncertainty in bioassessment methods — major results and conclusions from the STAR project and their application using STARBUGS
The STAR project’s extensive replicated sampling programmes have provided the first ever quantitative comparative studies of the susceptibility of a wide range of national macroinvertebrate sampling methods an...
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Chapter
Comparison of macroinvertebrate sampling methods in Europe
The aim of this study was to describe in detail the national macroinvertebrate sampling methods used and to compare them with a common standard, the STAR-AQEM sampling method. Information on national methods a...
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Sample coherence — a field study approach to assess similarity of macroinvertebrate samples
The EU-funded STAR-project provided an opportunity to analyse 1418 macroinvertebrate samples from 310 sampling sites throughout Europe. At most of the sites, samples were taken in two seasons using both nation...
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Chapter
Effects of sampling and sub-sampling variation using the STAR-AQEM sampling protocol on the precision of macroinvertebrate metrics
As part of the extensive field sampling programme within the European Union STAR project, replicate macroinvertebrate samples were taken using the STAR-AQEM sampling method at each of 2–13 sites of varying eco...
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A comparison of the European Water Framework Directive physical typology and RIVPACS-type models as alternative methods of establishing reference conditions for benthic macroinvertebrates
The EU Water Framework Directive requires European Union Member States to establish ‘type-specific biological reference conditions’ for streams and rivers. Types can be defined by using either a fixed typology...
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Estimates and comparisons of the effects of sampling variation using ‘national’ macroinvertebrate sampling protocols on the precision of metrics used to assess ecological status
The Water Framework Directive (WFD) of the European Union requires all member countries to provide information on the level of confidence and precision of results in their river monitoring programmes to assess...
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Chapter
Detection of ecological change using multiple organism groups: metrics and uncertainty
A number of biological approaches are commonly used to assess the ecological integrity of stream ecosystems. Recently, it is becoming increasingly common to use multiple organism groups in bioassessment. Advoc...
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Assessment of sources of uncertainty in macrophyte surveys and the consequences for river classification
The application of macrophytes in freshwater monitoring is still relatively limited and studies on their intercalibration and sources of variation are required. Therefore, the aim of the study was to compare s...
