July 2024
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28 Reads
Environmental Pollution
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July 2024
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28 Reads
Environmental Pollution
June 2024
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107 Reads
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1 Citation
Environmental Pollution
Emerging pollutants, such as pharmaceuticals and microplastics have become a pressing concern due to their widespread presence and potential impacts on ecological systems. To assess the ecosystem-level effects of these pollutants within a multi-stressor context, we simulated real-world conditions by exposing a near-natural multi-trophic aquatic food web to a gradient of environmentally relevant concentrations of fluoxetine and microplastics in large mesocosms over a period of more than three months. We measured the biomass and abundance of different trophic groups, as well as ecological functions such as nutrient availability and decomposition rate. To explore the mechanisms underlying potential community and ecosystem-level effects, we also performed behavioral assays focusing on locomotion parameters as a response variable in three species: Daphnia magna (zooplankton prey), Chaoborus flavicans larvae (invertebrate pelagic predator of zooplankton) and Asellus aquaticus (benthic macroinvertebrate), using water from the mesocosms. Our mesocosm results demonstrate that presence of microplastics governs the response in phytoplankton biomass, with a weak non-monotonic dose-response relationship due to the interaction between microplastics and fluoxetine. However, exposure to fluoxetine evoked a strong non-monotonic dose-response in zooplankton abundance and microbial decomposition rate of plant material. In the behavioral assays, the locomotion of zooplankton prey D. magna showed a similar non-monotonic response primarily induced by fluoxetine. Its predator C. flavicans, however, showed a significant non-monotonic response governed by both microplastics and fluoxetine. The behavior of the decomposer A. aquaticus significantly decreased at higher fluoxetine concentrations, potentially leading to reduced decomposition rates near the sediment. Our study demonstrates that effects observed upon short-term exposure result in more pronounced ecosystem-level effects following chronic exposure.
June 2023
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435 Reads
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17 Citations
TrAC Trends in Analytical Chemistry
August 2022
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135 Reads
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7 Citations
Water Research
The anomalous past two years of the COVID-19 pandemic have been a test of human response to global crisis management as typical human activities were significantly altered. The COVID-instigated anthropause has illustrated the influence that humans and the biosphere have on each other, especially given the variety of national mobility interventions that have been implemented globally. These local COVID-19-era restrictions influenced human-ecosystem interactions through changes in accessibility of water systems and changes in ecosystem service demand. Four urban aquatic case studies in the Netherlands demonstrated shifts in human demand during the anthropause. For instance, reduced boat traffic in Amsterdam canals led to improved water clarity. In comparison, ongoing service exploitation from increased recreational fishing, use of bathing waters and national parks visitation are heightening concerns about potential ecosystem degradation. We distilled management lessons from both the case studies as well as from recent literature pertaining to ecological intactness and social relevance. Equally important to the lessons themselves, however, is the pace at which informed management practices are established after the pandemic ends, particularly as many communities currently recognize the importance of aquatic ecosystems and are amenable to their protection.
... Furthermore, it is of greater significance to note that the FTIR technique is not feasible if the food sample contains water in it, due to the overlaying of the targeted spectra. Such detection techniques need an elaborate standard archive to accurately detect MPs with promising data [121]. ...
June 2024
Environmental Pollution
... To the best of our knowledge, there are only two comprehensive approaches for risk assessment that specifically address human health risks of MNPs [58,59]. The framework proposed by Nor and co-authors was designed for regulatory use and in principle follows the classic risk assessment paradigm described above [58,60]. Due to the complexity of the risk assessment of MNPs it describes four pillars that address different needs: (I) analytical techniques, (II) empirical data, (III) theoretical and modeling approaches and (IV) stakeholder engagement. ...
June 2023
TrAC Trends in Analytical Chemistry
... In recent decades, management reforms have been implemented worldwide for sustainable environmental governance in the context of increasing global concerns about environmental degradation (Zhang and Wen, 2008;Voulvoulis et al., 2017;Nesshover et al., 2017). However, existing efforts have been challenged by global environmental changes, especially intensifying climate change (Glaeser, 2022;Sharifi and Khavarian-Garmsir, 2020;Armstrong et al., 2022). These changes have brought unparalleled upheaval to global environmental sustainability over the past century (Leal et al., 2022;Martin-Arias et al., 2020;Peng et al., 2023). ...
August 2022
Water Research