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一种静止的鸟类捕食者的微量,宏观和稀土元素:与年龄和饮食标记物的关系

Ingvild B Kroglund¹, Tomasz M Ciesielski², Jan E Østnes¹

¹Faculty of Biosciences and Aquaculture, Nord University, Norway.

Environmental research

|March 14, 2025

概括

陶尼猫头积累了高水平的和,造成潜在的健康风险. 稀土元素在幼中生物放大,这表明需要研究它们的来源和影响.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
鸟类学鸟类学是一门学科.

背景情况:

(Strix aluco) 被提议用于泛欧洲污染物监测,因为它们的寿命长和静止性.
研究像黄猫头这样的顶级捕食者的元素负担,可以了解生态系统的健康状况.

研究的目的:

量化挪威中部棕猫头的基本和非基本元素.
为了比较成年猫头和幼猫头之间的元素度.
探索元素度,饮食 (δ13C, δ15N) 和潜在的健康影响之间的关系.

主要方法:

从成年雌性及其幼的全血和身体羽毛中分析了61种元素.
稳定同位素分析 (δ13C和δ15N) 来评估饮食和热量位置.
测量的元素度与已确定的健康值进行比较.

主要成果:

成年黄猫头与幼相比,对大多数检测到的元素的度更高.
成人的平均血 (Hg) 超过了有害健康值,尽管 (Se) 足以减轻Hg的毒性.
(Cd) 在两个年龄组都超过了次致命水平,而稀土元素 (REEs),特别是 (Ce),新 (Nd) 和 (Y),在与饮食相关的幼中显示出生物放大.

结论:

陶尼猫头积累了有关Hg和Cd的水平,突出了对该物种的潜在风险.
饮食分析揭示了成人和幼之间的差异,幼可能会消耗更多的迁徙猎物.
在幼中REEs的生物放大要求进一步调查它们的来源,可能与迁徙的猎物有关,以及它们的生态影响.

关键词:

生物监测生物监测饮食饮食饮食饮食金属污染金属污染稀土元素稀土元素稀土元素稳定的同位素是稳定的.唐尼猫头是什么意思

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