2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 9:45 AM - 10:00 AM | LINKING BIOLOGICAL RESPONSE TO CATCHMENT MANAGEMENT: THE DEVELOPMENT AND TESTING OF DIAGNOSTIC BIOTIC INDICES | 330 A
LINKING BIOLOGICAL RESPONSE TO CATCHMENT MANAGEMENT: THE DEVELOPMENT AND TESTING OF DIAGNOSTIC BIOTIC INDICES
The European Water Framework Directive (WFD) introduced a legal obligation for member states to mitigate the factors causing waterbodies to fail to achieve quality targets (“Good” Ecological Status). Hence, efforts have been made to provide methods that can identify the factors causing sites to fail, which includes development of stressor-specific diagnostic indices. We have developed indices based on empirical analysis of extensive field survey data, using partial ordination to account for natural background variation in species distributions and enabling the effects of composite stressor gradients to be assessed (e.g. multiple metals). Whereas some strongly associated stressors (e.g. flow modification/fine sediment) are difficult to disentangle using diagnostic indices, others provide a clearer signal of causality. These indices used in conjunction with spatial models based on land use practice can predict likely stressors acting on a waterbody and the likely biological response to mitigation. Using experimental agricultural catchments varying in hydrological connectivity and land-use, we are now testing these indices by explicitly linking biological and hydrochemical responses to mitigation efforts. Such work will improve our understanding of the effectiveness of mitigation, and the social, economic and biological constraints on achieving WFD targets.
- Diagnostic Indices
- Landuse
- Sediment
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
John Iwan Jones
(), Queen Mary University of London, j.i.jones@qmul.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
John Murphy
(), Queen Mary University of London, j,f,murphy@qmul.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Amanda Arnold
(), Queen Mary University of London, a.arnold@qmul.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Chaz Duerdoth
(), Queen Mary University of London, c.p.duerdoth@qmul.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
James Pretty
(), Queen Mary University of London, j.i.pretty@qmul.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Adrian Collins
(), Rothamsted Research, adrian.collins@rothamsted.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -