Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas, Lithuania.
Environ Sci Pollut Res Int. 2023 Apr;30(17):51018-51029. doi: 10.1007/s11356-023-25951-4. Epub 2023 Feb 18.
Emerging pollutants and climate change are two main challenges affecting soil organisms today. Changes in temperature and soil moisture with climate change are key factors determining activity and fitness of soil dwelling organisms. The occurrence and toxicity of antimicrobial agent triclosan (TCS) in terrestrial environment is of high concern, while no data are available on TCS toxicity changes to terrestrial organisms under global climate change. The study's aim was to assess the impact of elevated temperature, decreased soil moisture content, and their complex interaction on triclosan-induced changes in Eisenia fetida life cycle parameters (growth, reproduction, and survival). Eight-week TCS-contaminated soil (10-750 mg TCS kg) experiments with E. fetida were performed at four different treatments: C (21 °C + 60% water holding capacity (WHC)); D (21 °C and 30% WHC); T (25 °C + 60% WHC); and T + D (25 °C + 30% WHC). TCS had negative impact on the earthworm mortality, growth, and reproduction. Changing climate conditions have altered TCS toxicity to E. fetida. Drought and drought in combination with elevated temperature enhanced the adverse effects of TCS on earthworm survival, growth rate, and reproduction, while single elevated temperature slightly reduced TCS lethal toxicity as well as toxicity to growth rate and reproduction.
新兴污染物和气候变化是当今影响土壤生物的两个主要挑战。气候变化引起的温度和土壤湿度变化是决定土壤生物活性和适应性的关键因素。抗菌剂三氯生（TCS）在陆地环境中的出现和毒性是人们高度关注的问题，而关于全球气候变化下 TCS 对陆地生物的毒性变化尚无数据。本研究旨在评估高温、土壤水分含量降低及其复杂相互作用对 TCS 诱导的赤子爱胜蚓生命周期参数（生长、繁殖和存活）变化的影响。在四个不同处理条件下（C：21°C+60%持水能力（WHC）；D：21°C 和 30%WHC；T：25°C+60%WHC；和 T+D：25°C+30%WHC）进行了为期 8 周的 TCS 污染土壤（10-750 mg TCS kg）对赤子爱胜蚓的实验。TCS 对蚯蚓死亡率、生长和繁殖有负面影响。气候变化条件改变了 TCS 对赤子爱胜蚓的毒性。干旱和干旱与高温相结合增强了 TCS 对蚯蚓存活、生长速度和繁殖的不利影响，而单一高温则略微降低了 TCS 的致死毒性以及对生长速度和繁殖的毒性。
