基于效应的溪流生态毒理学评估的时空变化

IF 6 3区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Delia Hof, Thomas Bing, Sebastian Heß, Jens Mayer, Jörg Oehlmann, Matthias Oetken
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引用次数: 0

摘要

背景水体受到包括微污染物在内的化学污染的影响,而传统的化学监测方法并不能完全捕捉到这些污染。将基于效应的体内和体外综合方法纳入标准化评估程序,为弥合化学评估和生物评估之间的差异提供了可能,并已在多项研究中提出。然而,有必要为地表水制定一个与化学和生态状况相当的生态毒理学评估系统。本研究的目的是通过使用不同的体外检测方法,对德国中部 15 个不同地点的水样进行为期一年的评估,调查生态毒理学效应的时空变化,从而为上述讨论做出贡献。常规处理废水的影响似乎是影响最大的压力源之一,因为直接比较废水处理厂排放口上游和下游的生态毒性,发现大多数生物测定的生态毒性都显著增加。将测得的雌激素毒性与建议的阈值进行比较,结果显示其影响在生态毒理学相关范围内。以这种方式记录生态毒理学状况是对水评估工具的有益补充,有助于成功的水管理。尽管本研究中的大多数检测方法在检测强烈的人为影响方面非常一致,但在规划采样策略时,应考虑到个别检测方法可能存在的时间差异,以提高结果的可比性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Temporal and spatial variations in the effect-based ecotoxicological assessment of streams

Background

Water bodies are affected by chemical contamination, including micropollutants, which is not fully captured by conventional chemical monitoring methods. The inclusion of integrative, effect-based in vivo and in vitro methods in standardized assessment procedures offers the possibility of bridging discrepancies between chemical and biological assessments and has already been proposed in several studies. However, there is a need to develop a comparable ecotoxicological assessment system for surface waters as for chemical and ecological status. This study aims to contribute to this discourse by investigating the temporal and spatial variation of ecotoxicological effects by assessing water grab samples of 15 different sites in central Germany over the course of 1 year using different in vitro assays.

Results

The level of measured estrogenicity and anti-estrogenicity varied between the four measurement campaigns, while baseline toxicity, dioxin-like effects and mutagenicity showed relatively constant detectable effects over the study period. The impact of conventionally treated wastewater appeared to be one of the strongest influencing stressors, as direct comparisons of ecotoxicity upstream and downstream of wastewater treatment plant dischargers showed a significant increase for most of the conducted bioassays. Comparison of the measured estrogenicity with proposed threshold values showed effects within ecotoxicologically relevant ranges.

Conclusions

Bioassays record ecotoxicological effects on the basis of specific modes of action, allowing whole groups of substances to be identified as pollutants. Recording ecotoxicological status in this way is a useful complement to water assessment tools and can contribute to successful water management. Although most of the assays in this study were very consistent in detecting strong anthropogenic influences, possible temporal variations of individual assays should be taken into account when planning sampling strategies to improve the comparability of results.

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来源期刊
Environmental Sciences Europe
Environmental Sciences Europe Environmental Science-Pollution
CiteScore
11.20
自引率
1.70%
发文量
110
审稿时长
13 weeks
期刊介绍: ESEU is an international journal, focusing primarily on Europe, with a broad scope covering all aspects of environmental sciences, including the main topic regulation. ESEU will discuss the entanglement between environmental sciences and regulation because, in recent years, there have been misunderstandings and even disagreement between stakeholders in these two areas. ESEU will help to improve the comprehension of issues between environmental sciences and regulation. ESEU will be an outlet from the German-speaking (DACH) countries to Europe and an inlet from Europe to the DACH countries regarding environmental sciences and regulation. Moreover, ESEU will facilitate the exchange of ideas and interaction between Europe and the DACH countries regarding environmental regulatory issues. Although Europe is at the center of ESEU, the journal will not exclude the rest of the world, because regulatory issues pertaining to environmental sciences can be fully seen only from a global perspective.
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