Integrated Environmental Assessment and Management最新文献

Quaternary ammonium compounds (QACs), often referred to as QACs or quats, are a class of frequently used chemicals have been receiving greater attention due to their increased use during the COVID-19 pandemic and association with a variety of hazard traits. The lack of a standardized nomenclature for this class of chemicals compromises our ability to understand the use of individual QACs within and across products and product categories, which in turn makes it challenging to accurately assess the potential for human and environmental exposures. This article presents a clear, descriptive, and consistent nomenclature for QACs. This nomenclature was developed with a focus on QACs used as surfactants and antimicrobials in personal care and cleaning products. By harmonizing the names and abbreviations used to communicate about QACs by the scientific, regulatory, and industrial communities, we hope to improve the ease and accuracy of that communication.

Double-stranded RNA (dsRNA)-based biopesticides are a promising new method of pest management. These biopesticides leverage the endogenous RNA interference pathway to selectively regulate expression of key genes involved in growth and development in pests, providing the potential to minimize harmful environmental effects by highly specific targeting. As dsRNA-based biopesticides are presented for regulatory review, evaluating potential off-target effects on nontarget organisms (NTOs) in a manner that may be unique to this novel sequence-specific mode of action is crucial. To address this, we propose here a bioinformatics framework for consideration of sequence-specific off-target effects in NTOs. This framework includes careful consideration of NTOs based on potential exposure and susceptibility and recommends standardizing analyses to search for 21-nucleotide stretches of perfect identity and 80% overall identity between the dsRNA and off-target transcripts. We recommend a three-pronged approach to ensure a comprehensive risk assessment: (a) phylogenetic analysis of gene orthologs that defines the taxonomic scope of sequence similarity, (b) broad searches of large databases to identify potential unexpected similarity in distantly related species, and (c) full transcriptome analyses in NTO species of particular concern for a thorough understanding of all potential hazards. Finally, we recommend considering the results of bioinformatic analyses in the context of risk characterization, which means considering likely exposure to the dsRNA-based pesticide and potential susceptibility or barriers to dsRNA uptake. This approach enables a robust ecological risk assessment for dsRNA-based biopesticides and a regulatory path forward for this promising new pest management tool.

The One Health concept strongly brings into focus the important connections for human and ecosystem health. However, the incorporation of behavior method guidelines in risk assessment and regulation/policy is not equal between human and ecological disciplines. A survey was conducted on the perceptions and role of behavioral (eco)toxicology in the protection of human and ecosystem health. Those surveyed include scientists working in the field of environmental toxicology and behavioral ecology, representing industry, government, nongovernment organizations, and academia/research centers. The respondents (N = 166) agreed that contaminants "can impact" and "are impacting" wildlife (97% and 77%) and humans (84% and 62%, respectively). Overall respondents believed behavioral experiments to be repeatable (60%), reliable (61%), and relevant (84%), although those not studying behavior (43%) were more cautious in their answers. Respondents were more likely to be neutral when asked whether behavioral endpoints are more sensitive (43%), but they agreed (80%) that behavioral endpoints provide important alternative information to standard endpoints. The largest group disagreed (42%) with the statement that behavioral endpoints are currently used in risk assessment but agreed that they were essential (55%). The majority of respondents disagreed (63%) that we understood the risks of contaminants to human and ecosystem health, but they agreed (68%) that regulatory authorities should consider behavioral endpoints. When answers were compared among sectors (academia, government, or industry), industry scientists were more likely to be negative or neutral in their responses to the application of behavioral toxicology. We discuss how these data could be used to support our understanding of and confidence in the effects of contaminants on human and ecosystem health.

We compared ground flora sampling methods for assessing the state of multiple bottomland forest restorations 6-21 years after restoration implementation in northeast Indiana, United States. Data from standard fixed-area plots of appropriate size and complexity for forest assessments were compared with data from smaller fixed-area plots of different shapes and plotless sampling methods. The methods were compared for their ability to (1) assess species richness and abundance, (2) detect and monitor invasive and dominant species, and (3) understand community composition. We assessed the biases of the compared methods, identified the training and skills needed to conduct sampling, and examined sampling costs in relation to total monitoring costs. Results show that smaller plots are able to detect more species per unit area sampled without significant differences in floristic quality measures. Data from smaller plots were sufficient for comprehensively describing site conditions even when less of the total site area was sampled. Although multivariate analyses of data from smaller plots yielded greater within-group dissimilarity than data from larger plots, multiple response permutation procedure analyses indicated no significant differences between nonmetric multidimensional scaling solutions based on data from the different sampling methods. Regardless of the sampling methods used to collect data, use of multivariate analyses identified a gradient of time since restoration was implemented as the dominant factor relating to differences between community composition. Sampling costs spanned a range of one order of magnitude but generally represented less than 6% of total assessment costs. Results suggest that when selecting sampling methods, matching monitoring effort to specific measurable management endpoints is more important than sampling cost.

Not-In-My-Backyard (NIMBY) facilities, often characterized by their negative externalities, are frequently opposed or resisted by the public. To examine the impact of information interventions on public acceptance of NIMBY facilities, a behavioral investigation experiment consisting of a survey of 100 college students before and after viewing negative videos of either environmentally polluting or psychologically excluding types of NIMBY facilities was conducted to assess the efficacy of these interventions in shaping public perceptions and attitudes. Differences in respondent's attitudes toward the types of NIMBY facilities demonstrated that the information intervention affected perceptions and attitudes toward NIMBY facilities. Changes in response variables for perceived risk, perceived benefits, self-efficacy, positive emotion label, social environment, and public acceptance showed that environmentally polluting NIMBY facilities elicited a more negative response than psychologically excluding NIMBY facilities. Postintervention, significant differences emerged across all six dimensions, and attitudes toward environmentally polluting NIMBY facilities became more negative than those toward psychologically excluding NIMBY facilities, with a significant increase in the perceived risk and a significant decrease in the perceived benefit. The study demonstrated that information interventions influenced attitudes toward NIMBY facilities, and that this influence differed between the two facility types.

Accumulation of perfluorooctane sulfonate (PFOS) has been demonstrated in biota across the globe. Higher trophic-level air-breathing organisms that live in or depend on aquatic ecosystems are most at risk from PFOS and other bioaccumulative per- and polyfluoroalkyl substances (PFAS). Nonetheless, there are very few guidelines available for the protection of air-breathing wildlife. The Australian and New Zealand Guidelines for Fresh and Marine Water Quality provide Default Guideline Values (DGVs) for toxicants. These DGVs are based on traditional ecotoxicological tests that do not consider bioaccumulation. For chemicals known to bioaccumulate, the guidelines recommend a precautionary approach by applying the DGV that protects 99% of species. The PFAS National Environmental Management Plan (NEMP) provides Wildlife Diet Guidelines (WDGs) to protect mammals and birds that consume aquatic organisms. Other jurisdictions have developed Water Quality Criteria for the protection of wildlife via the use of dietary studies and combined with bioconcentration factors to back-calculate a safe concentration of PFOS in the water. As end users tend to use Water Quality Guidelines/Criteria as screening tools for further risk assessment, it is critically important to understand whether these PFOS guidelines effectively protect wildlife. In 2022-2023, water, sediment, and biota samples were collected over a year at eight sites in southeast Queensland, Australia. The dominant PFAS found in biota was PFOS, with the only other PFAS found in biota to be long-chain perfluorocarboxylic acids (PFCAs). Fifty percent of the sites had mean PFOS surface water concentrations that were below the draft Australian DGV, and yet all but one had biota concentrations that exceeded the NEMP WDGs. Bioaccumulation factors (BAFS) in fish were inversely related to concentrations of PFOS in water and showed a high variability within species and sites. Considering this, an interim field derived screening threshold is proposed for wildlife risk assessments.

This report summarizes discussions of an international workshop in May 2024, aiming to scope the development needs of a proposal for an Organisation for Economic Cooperation and Development (OECD) Guidance Document on vitellogenin (VTG) analysis and assessment. Vitellogenin, an egg-yolk precursor protein in oviparous species, is an informative marker of possible chemical-induced endocrine activity (particularly estrogenicity). Vitellogenin measurement is included in several standardized test guidelines published by the OECD and USEPA for the assessment of endocrine activity of chemicals in fish (and one in amphibians). However, in vivo VTG data across and within fish species can be highly variable and influenced by both technical and biological factors, affecting the reliability and interpretation of results. This poses a challenge for regulatory decision-making and can trigger potentially unnecessary vertebrate studies or prevent necessary further investigations. The workshop brought together 42 experts from different sectors and geographies to discuss three key aspects regarding VTG assessment: (1) technical/laboratory factors and VTG quantification, (2) data handling and statistics, and (3) interpreting the biological relevance of VTG responses. The workshop participants discussed the development and needs of a guidance document to provide harmonized recommendations, best practices, quality assurance criteria, and minimum reporting standards for VTG assessment in regulatory studies across the different test guidelines. Several areas were identified where further work and discussion are needed to inform on the development of the guidance document, such as the use of historical control data, the identification of potential outliers, the presentation of data, and analysis of case study examples. Provision of such a guidance document will further support the use of VTG as a relevant marker for a key aspect of endocrine activity assessment for regulatory decision-making. A formal project was subsequently accepted into the OECD Test Guideline workplan in April 2025.

This study estimates the recreational value of the Sal (Shorea robusta) forests ecosystem services, focusing on Bhawal National Park in Bangladesh. We employ the contingent valuation method (CVM) to estimate the willingness to pay (WTP) for a safer and improved nature-based recreational area. A sample of 418 visitors was randomly selected and surveyed during peak and off-peak tourism seasons. A probit regression model was used to estimate the inverse relationship between visit likelihood and potential entrance prices. Subsequently, the double-bounded dichotomous choice (DBDC) CVM was applied to estimate the WTP. The estimated average WTP was Bangladeshi Taka (BDT) 188.99 (USD [U.S. dollar] 1.72), at least nine times higher than the current fees. Visitors are willing to pay ∼91% more for entrance fees during peak seasons than off-peak seasons. As a foundational study in valuing the Sal forest, this study is crucial for informing ecotourism management policies to sustain this ecosystem's health and recreational value.

This review revisits microplastic pollution in Bangladesh from 2014-2024, synthesizing research on distribution, plastic types, policies, and mitigation strategies. Using PubMed and Google Scholar, peer-reviewed articles and documents were analyzed to assess sources, impacts, and policy effectiveness. Microplastics contaminate rivers, soil, air, fertilizers, and food products. The dominant polymers, including polyethylene, polypropylene, polystyrene, polyethylene terephthalate, and polyamide, originate from fishing nets, industrial discharge, and urban waste, threatening ecosystems and food chains. Plastic pollution is exacerbated by transboundary river systems, excessive plastic production, use of single-use plastics, and ineffective waste management. The Meghna, Karnaphuli, and Rupsha Rivers transport 1 million metric tons of mismanaged waste annually to coastal areas. The plastics industry, employing 1.2 million people across 5,000 manufacturers, has increased per capita plastic consumption from 3 kg in 2005 to 9 kg in 2020, worsening waste accumulation. The COVID-19 pandemic accelerated the crisis, with polythene bag usage increasing to 21 billion, generating 78,433 tons of waste. Plastic pollution costs USD 39 million annually, affecting tourism, fisheries, and municipal budgets, and microplastic contamination threatens seafood exports. Clean-up costs consume 30% of Bangladesh's environmental budget. Using an agent-based system dynamics model, simulations predict that per capita plastic waste will rise to 11.6 kg by 2040, with landfill accumulation reaching 70,000 tons and riverine discharge increasing from 512 to 834 tons, raising the plastic waste footprint index (PWFI) to 24. Policy 2, which implements 69% conversion, 80% source separation, and 50% riverine discharge reduction, proves most effective, lowering PWFI to 1.07 and ensuring sustainable waste management. However, an integrated approach combining research, policy enforcement, technological innovation, and global collaboration is crucial. Strengthening the waste management framework, regulatory enforcement, and sustainable economic strategies will enable Bangladesh to mitigate microplastic pollution, advance its circular economy, and contribute to global environmental conservation.