First survey of metallic distribution in zooplankton from a south Moroccan area

IF 2.6 3区地球科学 Q2 OCEANOGRAPHY

Oceanologia Pub Date : 2023-10-01 DOI:10.1016/j.oceano.2023.06.009

Fatima Zohra Bouthir , Imane Afandi , Sophia Talba , Maylis Labonne , Hicham Masski , Mathieu Waeles , Raymond Lae

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引用次数: 0

Abstract

The Moroccan Southern Atlantic coast is mainly influenced by upwelling, Saharan dust and anthropogenic micropollutant input. These factors contribute to increasing the availability of metal elements in waters. To differentiate human impact from natural variability, knowledge of background concentrations of metals and their fluctuations in bioindicator organisms such as zooplankton is important. This work aims to determine the levels of metals elements (Zn, Mn, Pb, Cu, Cd, Cr, Co, Ni, Li, As, Sr, U, Fe and Ba) in zooplankton along the southern area of the Atlantic coast of Morocco. Zooplankton samples were collected in the summer (July 2013) and autumn (December 2013) at 27 stations from Sidi Ifni to the south of Dakhla. All stations were located on transects perpendicular to the coast. The analysis of metal elements in zooplankton was determined by ICP–MS. The results revealed that in all transects, metal concentrations were below the regulatory limits. Metal enrichments were observed in the south and decreased gradually to the north. This study can be used as baseline data for the metal contents of zooplankton in Moroccan South Atlantic coastal water. A comparison to worldwide reported data on zooplankton did not reveal any suggestions on increased metal presence in the area investigated.

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摩洛哥南部地区浮游动物金属分布的首次调查

摩洛哥南大西洋海岸主要受上升流、撒哈拉沙尘和人为微污染物输入的影响。这些因素有助于增加水中金属元素的可用性。为了区分人为影响和自然变化，了解金属的背景浓度及其在浮游动物等生物指示生物中的波动是很重要的。本研究旨在测定摩洛哥大西洋沿岸南部地区浮游动物中金属元素(Zn、Mn、Pb、Cu、Cd、Cr、Co、Ni、Li、As、Sr、U、Fe和Ba)的含量。夏季(2013年7月)和秋季(2013年12月)在Sidi Ifni至Dakhla以南的27个站点采集了浮游动物样本。所有监测站都位于与海岸垂直的横断面上。采用ICP-MS法测定浮游动物中金属元素的含量。结果表明，所有样带的金属浓度均低于规定限值。在南部观察到金属富集，向北逐渐减少。本研究可作为摩洛哥南大西洋沿岸浮游动物金属含量的基线数据。与世界范围内报道的浮游动物数据进行比较，并没有发现任何迹象表明被调查地区的金属含量有所增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Oceanologia 地学-海洋学

CiteScore

5.30

自引率

6.90%

发文量

审稿时长

146 days

期刊介绍： Oceanologia is an international journal that publishes results of original research in the field of marine sciences with emphasis on the European seas.