相关实验视频

Updated: Jul 30, 2026

Use of Chironomidae Diptera Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies

Use of Chironomidae Diptera Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies

Published on: July 24, 2015

使用法医古生物学追踪来自毛皮养殖场的污染

Jennifer A Kissinger¹, Braden R B Gregory¹, Chloe Clarkson¹

¹Department of Biology, University of Ottawa, 30 Marie Curie Pvt., Ottawa, ON, Canada.

Environmental pollution (Barking, Essex : 1987)

|August 5, 2023

概括

新斯科舍省的毛皮养殖对湖水质量产生了重大影响. 沉积物核中的地化学标记揭示了自20世纪80年代以来与养殖场扩张有关的污染增加.

科学领域:

环境科学环境科学
古代气候学是一种古气候学.
地质化学地质化学

背景情况:

欧化对水质构成了全球性的威胁,尤其是在农业地区.
毛皮养殖,主要是子,是加拿大新斯科舍省西南部的一个重要的农业活动.
评估湖泊的长期污染驱动因素对于有效的水质管理至关重要.

研究的目的:

调查新斯科舍省西南部湖泊潜在污染输入的长期驱动因素.
为了将沉积物地化学的变化与该地区养殖的扩张联系起来.
应用地化学指纹作为法医古生物学的一个工具.

主要方法:

使用了前后对照影响 (BACI) 研究设计.
收集和分析了来自14个靠近养殖场的湖泊的沉积物核心.
综合经济数据,子便样本和地化学标记物 (醇,N,叶绿素-a,重金属).

主要成果:

在养场附近,固醇生物标志物 (胆固醇,β-固醇) 和重金属 (As,Cu,Sr) 的含量增加.
上世纪80年代出现了与子相关的醇,δ¹⁵N和叶绿素-a的增加,这与子养殖场数量增加了400%相吻合.
在大多数研究的湖泊中,农业影响不如养殖的影响明显.

结论:

明克养殖明显影响了新斯科舍省西南部的湖泊沉积物地化学和水质.
地化学指纹提供了一种有价值的多代理方法,用于评估湖泊生态系统的历史污染.
这种方法为其他湖泊系统的环境污染评估提供了有前途的应用.

关键词:

15N/14N 15N/14N 15N/14N 15N/14N 15N/14N 金属金属金属牛头养殖场牛头养殖场古代气候学是一种古气候学.沉积物沉积物是一种沉积物.类固醇是一种固醇.

更多相关视频

An Ultra-clean Multilayer Apparatus for Collecting Size Fractionated Marine Plankton and Suspended Particles

An Ultra-clean Multilayer Apparatus for Collecting Size Fractionated Marine Plankton and Suspended Particles

Published on: April 19, 2018

Fluorescently Labeled Bacteria as a Tracer to Reveal Novel Pathways of Organic Carbon Flow in Aquatic Ecosystems

Fluorescently Labeled Bacteria as a Tracer to Reveal Novel Pathways of Organic Carbon Flow in Aquatic Ecosystems

Published on: September 13, 2019

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.

Sources of Food Contamination

Sources of Food Contamination

Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...