Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.scitotenv.2020.143915 |
| Title (Primary) | How diatom-, invertebrate- and fish-based diagnostic tools can support the ecological assessment of rivers in a multi-pressure context: temporal trends over the past two decades in France |
| Author | Alric, B.; Dézerald, O.; Meyer, A.; Billoir, E.; Coulaud, R.; Larras, F.; Mondy, C.P.; Usseglio-Polatera, P. |
| Source Titel | Science of the Total Environment |
| Year | 2021 |
| Department | BIOTOX |
| Volume | 762 |
| Page From | art. 143915 |
| Language | englisch |
| Topic | T9 Healthy Planet |
| Keywords | ecological risk assessment bioindicator functional trait hydromorphology machine learning water chemistry |
| Abstract | The degradation of aquatic ecosystems, induced by worldwide intensification in the use of both land and aquatic resources, has highlighted the importance of managing water quality and the critical role of innovative diagnostic tools for defining robust management responses to anthropogenic pressures. In this study, we simultaneously analyzed the outputs of three diagnostic tools. Each diagnostic tool estimated the impairment probabilities by any given anthropogenic pressures in French shallow streams using taxonomy- and/or trait-based metrics of three biological compartments: benthic diatoms, macroinvertebrates and fishes. Our objective was to explore how the simultaneous analysis of the outputs of the three tools could be used to (i) disentangle the effects of multiple pressures and (ii) provide policy-relevant information for stream managers and decision makers. A large proportion of the impairment probabilities exhibited no significant temporal patterns over the two decades (61.5% to 87.8 %, depending on the used tests). Among time series exhibiting significant change, positive shifts in mean and slope as well as in general trends (i.e. degradation) occurred respectively in 4.6 %, 2.1 % and 6.9 % of the time series and were less frequent than negative ones (7.6 %, 4.7 % and 15.6 %, respectively), indicating a modest improvement in water quality over the study period. Biological compartments presented contrasted responses over time; none, one, two or three compartments exhibiting a significant temporal trend for the same site and pressure category. Convergent temporal responses over the three biological compartments were detected according to the pressure category (hydromorphology vs. water chemistry) and regional context (e.g., lowland plains vs. mountains, pristine vs. agricultural regions). Altogether, this study advocates that enhancing the integration of a variety of information on natural and anthropized environments should be a priority prior to implement evidence-based sustainable conservation and restoration actions. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24014 |
| Alric, B., Dézerald, O., Meyer, A., Billoir, E., Coulaud, R., Larras, F., Mondy, C.P., Usseglio-Polatera, P. (2021): How diatom-, invertebrate- and fish-based diagnostic tools can support the ecological assessment of rivers in a multi-pressure context: temporal trends over the past two decades in France Sci. Total Environ. 762 , art. 143915 10.1016/j.scitotenv.2020.143915 |
|