2012年和2020年,贝林海和楚克奇海的斑点海胃中的微塑料
Alexandria Sletten1, Anna Bryan2, Katrin Iken3
1University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, 2150 N Koyukuk Dr, Fairbanks, AK 99775, United States of America; Alaska Department of Fish and Game, 1300 College Rd, Fairbanks, AK 99701, United States of America.
Marine pollution bulletin
|March 2, 2025
概括
太平洋北极斑点海中存在微塑料,其摄入量在过去十年中一直保持一致. 在吃盆地或鱼类猎物的海中发现了更高的微塑料度.
科学领域:
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
- 北极研究研究研究北极研究
背景情况:
- 微塑料污染了全球的海洋生态系统,包括太平洋北极地区.
- 了解海洋哺乳动物中的微塑料生物放大是非常重要的,因为它们的高食量水平.
- 斑点海 (Phoca largha) 是太平洋北极地区的主要生存物种.
研究的目的:
- 为了量化生存收获的斑点海中微塑料的存在.
- 根据年龄,地点和年份来调查微塑料度的变化.
- 为了确定这种物种中微塑料摄入的基线.
主要方法:
- 用酵素消化和真空过来分析斑点海的胃部含量.
- 微塑料颗粒被量化为每一个胃.
- 猎物的硬部分被保存用于饮食分析.
主要成果:
- 在33个分析的胃中,在97.1%的胃中检测到微塑料,每胃1到23颗颗粒.
- 在年龄类别,收获地点或收获年份 (2012年和2020年) 之间没有观察到微塑料度的显著差异.
- 吃底或更高热量水平的猎物 (鱼类) 的海显示出更高的微塑料负载.
结论:
- 太平洋北极地区的斑点海至少在十年内以一致的水平摄入了微塑料.
- 饮食习惯,特别是食用盆地和鱼类猎物,与更高的微塑料摄入量有关.
- 需要进一步的研究来评估对海和依赖海的人类社区的健康影响.
更多相关视频
05:31Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
15.9K
08:11Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell
Published on: August 14, 2021
4.4K
相关概念视频
01:30Marine Microbial Ecology
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
01:28Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...