相关实验视频

Updated: May 5, 2026

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Published on: May 15, 2017

湿地的甲杀虫剂污染减少了两动物的密度

Breanna R Keith¹, Danelle M Larson^2,3, Carl W Isaacson¹

¹Bemidji State University, Department of Environmental Studies, Sattgast Hall 109, Bemidji, MN, USA.

Ecotoxicology (London, England)

|March 28, 2025

概括

类杀虫剂对草原坑地区的淡水两动物种群产生负面影响. 农业排水和喷雾驱动运输这些农药,减少两动物在重要的水鸟息地丰富.

科学领域:

生态毒理学生态毒理学
湿地生态学湿地生态学
农业科学农业科学

背景情况:

淡水两足动物是北美草原坑地区 (PPR) 湿地的水鸟的重要食物来源.
两动物数量下降及其不均的分布引发了人们的担忧,人们对潜在原因的理解有限.
农业化学品对PPR湿地生态系统和两足动物种群的影响,尽管农业广泛发展,但仍未得到充分研究.

研究的目的:

调查两动物的丰富性,土地使用,水质和湿地沉积物中甲状腺杀虫剂污染之间的关系.
为了确定化物在PPR湿地中的潜在来源和运输机制.
评估景观特征在减轻甲状腺暴露中的作用.

主要方法:

在湿地条件的梯度上研究了两足动物 (Gammarus lacustris,Hyalella azteca) 的丰度.
收集和分析湿地沉积物以检测甲状腺杀虫剂度.
在研究流域内量化土地使用,水质,水文和息地指标.

主要成果:

在pyrethroid度和两足动物丰度之间发现了显著的负相关性.
在44%的湿地中检测到金字塔,特别是在密集耕种的地区,植被缓冲区最小.
甚至在野生动物保护区中也出现了甲状体,这表明通过陆地运输和喷雾漂流的广泛污染.

结论:

甲状腺杀虫剂对PPR.的淡水两动物种群构成威胁.
密集型农业和不充分的植物性过带有助于湿地的甲酸污染.
森林补丁和过条可以减少甲状腺运输和水生生态系统及其居民的暴露.

关键词:

甘马鲁斯 (Gammarus lacustris) 是一个湖动物.亚兹特克人的Hyalella.两足动物 (Amphipoda) 是一种两足动物.草原坑区湿地湿地草原坑区湿地甲状素杀虫剂是一种杀虫剂.湿地生态系统污染湿地生态系统污染

更多相关视频

Evaluating the Effect of Pesticides on the Larvae of the Solitary Bees

Evaluating the Effect of Pesticides on the Larvae of the Solitary Bees

Published on: October 15, 2021

Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation

Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation

Published on: February 10, 2023

相关概念视频

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

Microbial Bioremediation of Pesticides

Microbial Bioremediation of Pesticides

Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...

Acid Mine Drainage

Acid Mine Drainage

Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten...