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来自巴伦茨海生态系统的东北北极鱼 (Gadus morhua) 的气候变化动态和时间趋势

Michael S Bank¹, Quang Tri Ho², Randi B Ingvaldsen²

¹Institute of Marine Research, 5817, Bergen, Norway; University of Massachusetts Amherst, Amherst, MA, 01003, USA.

Environmental pollution (Barking, Essex : 1987)

|October 11, 2023

概括

气候变化,包括海洋变暖和巴伦茨海海冰融化,并没有显著改变北极东部鱼中的 (Hg) 水平. 这表明,一些物种对污染物相互作用的敏感性比以前认为的要小.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
生态毒理学生态毒理学

背景情况:

东北北极鱼 (Gadus morhua) 在生态和经济上至关重要,居住在弹性巴伦茨海生态系统中.
了解顶级捕食者的污染物动态对于生态系统健康和人类粮食安全至关重要.

研究的目的:

评估气候变化对北极东部鱼的 (Hg) 时间趋势的影响.
评估海洋温度,海冰面积和Hg生物积累在这个关键物种之间的关系.

主要方法:

分析了121年的海洋温度数据 (1900-2020年).
利用了41年的海冰面积数据 (1979-2020年).
检查了27年的 (Hg) 片度数据 (1994-2021) 来自东北北极鱼.

主要成果:

在长度正常化的鱼中观察到稳定,低度的,最近略有下降.
尽管有显著的海洋变暖和海冰减少,但没有检测到Hg生物积累的重大增加或减少.
这些发现与对其他大西洋鱼种群和海洋顶级捕食者的研究一致.

结论:

北极扩大和巴伦茨海的环境变化并没有导致北极东部鱼的Hg生物积累转移显著.
的生物积累是高度特定于环境的,受到饮食,源和个人生理学的影响,而不仅仅是气候变化.
结果对全球粮食安全,米纳马塔公约和联合国可持续发展目标有影响.

关键词:

巴伦茨海巴伦茨海气候变化气候变化气候变化盖达斯 (Gadus morhua) 是一个比较古老的动物.水星水星水星水星水星东北北极地区的鱼

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Global Climate Change

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.

What is Climate?

What is Climate?

Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.