Sensitivity and specificity of macroinvertebrate responses to gradients of multiple agricultural stressors

Brooks, Andrew J.; Bray, Jonathan; Nichols, Susan J.; Shenton, Mark; Kaserzon, Sarit; Nally, Ralph Mac; Kefford, Ben J.

doi:10.1016/j.envpol.2021.118092

Cited by 12 publications

(6 citation statements)

References 63 publications

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“…In a similar synthesis in Europe, 30% of stressor interactive effects on fish community metrics were found to be synergistic (Schinegger et al 2016 ), highlighting the need to incorporate these effects in stressor identification assessments. Testing for and reporting on the effects of stressor interactions is typically done only in flume or mesocosm studies; examples included the interactive effects of pesticides, coarse sediment, and nutrients (Brooks et al 2021 ), fine sediment, nutrients, and temperature (Piggott et al 2012 ), and salinity, fine sediment, and flow (Beermann et al 2018 ). Although these studies are quite useful to prioritize stressors, care should be taken to extrapolate these findings as these experiments are done under controlled settings and may not reflect stressor-response relationships observed in the field (Kreyling et al 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Identifying Key Stressors Driving Biological Impairment in Freshwater Streams in the Chesapeake Bay Watershed, USA

Fanelli

Cashman

Porter

2022

Environmental Management

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Biological communities in freshwater streams are often impaired by multiple stressors (e.g., flow or water quality) originating from anthropogenic activities such as urbanization, agriculture, or energy extraction. Restoration efforts in the Chesapeake Bay watershed, USA seek to improve biological conditions in 10% of freshwater tributaries and to protect the biological integrity of existing healthy watersheds. To achieve these goals, resource managers need to better understand which stressors are most likely driving biological impairment. Our study addressed this knowledge gap through two approaches: 1) reviewing and synthesizing published multi-stressor studies, and 2) examining 303(d) listed impairments linked to biological impairment as identified by jurisdiction regulatory agencies (the states within the watershed and the District of Columbia). Results identified geomorphology (i.e., physical habitat), salinity, and toxic contaminants as important for explaining variability in benthic community metrics in the literature review. Geomorphology (i.e., physical habitat and sediment), salinity, and nutrients were the most reported stressors in the jurisdictional impairment analysis. Salinity is likely a major stressor in urban and mining settings, whereas geomorphology was commonly reported in agricultural settings. Toxic contaminants, such as pesticides, were rarely measured; more research is needed to quantify the extent of their effects in the region. Flow alteration was also highlighted as an important urban stressor in the literature review but was rarely measured in the literature or reported by jurisdictions as a cause of impairment. These results can be used to prioritize stressor monitoring by managers, and to improve stressor identification methods for identifying causes of biological impairment.

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Section: Discussionmentioning

confidence: 99%

Identifying Key Stressors Driving Biological Impairment in Freshwater Streams in the Chesapeake Bay Watershed, USA

Fanelli

Cashman

Porter

2022

Environmental Management

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“…The approach developed has several advantages, including making the nature of interactions between stressors themselves and between stressors and their responses more explicit in the context of African ecosystems, where communities and their expected responses to stress are poorly documented. This would further improve our knowledge of these interactions (de Vries et al 2021b; Zhou et al 2022;Brooks et al 2021). Furthermore, the approach offers exibility and potential for extension to many other biological systems, as it could incorporate expert advice, where available, in an explicit and reproducible manner, and also account for small sample sizes, high variability in transitional environments, and uncertainties in designing experimental protocols (Drouineau et al 2010).…”

Section: Methodological Considerationsmentioning

confidence: 91%

From responses of macroinvertebrate metrics to the definition of reference metrics and stressor threshold values

HOUNYEME

Mama

Argillier

2023

Stoch Environ Res Risk Assess

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The present study focused on using benthic macrofauna to assess the risks of moving away from Good Ecological Status towards the functioning of an anthropized system (Nokoué-Benin), based on de ning reference values for macroinvertebrate metrics, stress thresholds and the responses of selected metrics to stressors. The approach used is a combination of a joint species distribution model and Bayesian networks. We used JSDM to select relevant metrics and generate posterior probabilities. We then converted these posterior probabilities into posterior response probabilities for each of the stress levels and fed them into a Bayesian network. To de ne the reference values of the metrics and the stress thresholds derived from the probability density diagrams for low-pressure levels, we used the responses predicted by the Bayesian network. An application of this approach was then carried out on a lagoon sampled during high and low water periods for three consecutive years (2004)(2005)(2006), with 33 macroinvertebrate taxa present in all seasons and sampling points, and measurements of 14 environmental parameters used as application data. This study demonstrated a reliable inference, the selection of seven relevant metrics and the de nition of reference conditions. The relevance of the metrics and ecological assessment criteria, despite the small sample size, suggests the potential for wider applicability of the approach to aquatic ecosystem monitoring and assessment programs in developing countries, which are generally characterized by a lack of monitoring data.

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“…Overall, our results suggest that standard testing does not adequately reflect the potential effects of sulfoxaflor on C. riparius . Measuring biomechanistic alterations is a promising addition in toxicity testing, as they can be measured relatively easily and are ecologically relevant (Sánchez-Bayo et al 2016 ; Brooks et al 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Participatory hackathon to determine ecological relevant endpoints for a neurotoxin to aquatic and benthic invertebrates

Rasmussen,

Bosker,

Ramanand

et al. 2024

Environ Sci Pollut Res

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The aim of this study is twofold: i) to determine innovative yet sensitive endpoints for sulfoxaflor and ii) to develop best practices for innovative teaching in ecotoxicology. To this end, a group of 52 MSc students participated in an environmental hackathon, during which they did creative toxicity testing on 5 freshwater invertebrate species: Daphnia magna, Chironomus riparius, Asellus aquaticus, Lymnaea stagnalis, and Anisus vortex. Involving the students in an active learning environment stimulated increased creativity and productivity. In total, 28 endpoints were investigated, including standard endpoints (e.g., mortality) as well as biomechanistic and energy-related endpoints. Despite high variances in the results, likely linked to the limited lab experience of the students and interpersonal differences, a promising set of endpoints was selected for further investigation. A more targeted follow-up experiment focused on the most promising organism and set of endpoints: biomechanistic endpoints of C. riparius larvae. Larvae were exposed to a range of sulfoxaflor concentrations (0.90–67.2 μg/L) for 21 days. Video tracking showed that undulation and swimming were significantly reduced at 11.1 μg sulfoxaflor/L after 9 days of exposure, and an EC50 = 10.6 μg/L for mean velocities of the larvae in the water phase was found. Biomechanistic endpoints proved much more sensitive than mortality, for which an LC50 value of 116 μg/L was found on Day 9. Our results show that performing a hackathon with students has excellent potential to find sensitive endpoints that can subsequently be verified using more targeted and professional follow-up experiments. Furthermore, utilising hackathon events in teaching can increase students’ enthusiasm about ecotoxicology, driving better learning experiences.

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Sensitivity and specificity of macroinvertebrate responses to gradients of multiple agricultural stressors

Cited by 12 publications

References 63 publications

Identifying Key Stressors Driving Biological Impairment in Freshwater Streams in the Chesapeake Bay Watershed, USA

Identifying Key Stressors Driving Biological Impairment in Freshwater Streams in the Chesapeake Bay Watershed, USA

From responses of macroinvertebrate metrics to the definition of reference metrics and stressor threshold values

Participatory hackathon to determine ecological relevant endpoints for a neurotoxin to aquatic and benthic invertebrates

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