...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Copper aerosols inhibit phytoplankton growth in the Mediterranean Sea
【24h】

Copper aerosols inhibit phytoplankton growth in the Mediterranean Sea

机译：铜气溶胶抑制地中海浮游植物的生长

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aerosol deposition plays an important role in climate and biogeo-chemical cycles by supplying nutrients to the open ocean, in turn stimulating ocean productivity and carbon sequestration. Aerosol particles also contain elements such as copper (Cu) that are essential in trace amounts for phytoplankton physiology but that can be toxic at high concentrations. Although the toxicity of Cu associated with aerosols has been demonstrated in bioassay experiments, extrapolation of these laboratory results to natural conditions is not straightforward. This study provides observational evidence of the negative effect of aerosols containing high Cu concentrations on marine phytoplankton over a vast region of the western Mediterranean Sea. Direct aerosol measurements were combined with satellite observations, resulting in the detection of significant declines in phytoplankton biomass after atmospheric aerosol events characterized by high Cu concentrations. The declines were more evident during summer, when nanoflagellates predominate in the phytoplankton population and stratification and oligotrophic conditions prevail in the study region. Together with previous findings concerning atmospheric Cu deposition, these results demonstrate that the toxicity of Cu-rich aerosols can involve large areas of the world's oceans. Moreover, they highlight the present vulnerability of oceanic ecosystems to Cu-rich aerosols of anthropogenic origins. Because anthropogenic emissions are increasing, large-scale negative effects on marine ecosystems can be anticipated.
机译：气溶胶的沉积在气候和生物地球化学循环中起着重要作用，它为大洋提供营养，进而刺激海洋生产力和碳固存。气溶胶颗粒还包含诸如铜（Cu）之类的元素，这些元素对于浮游植物生理而言是必需的，但在高浓度下可能有毒。尽管在生物测定实验中已经证明了与气溶胶相关的铜的毒性，但是将这些实验室结果推论到自然条件并不容易。这项研究提供了观测证据，证明了高浓度的铜气溶胶对西地中海广大地区海洋浮游植物的负面影响。直接气溶胶测量与卫星观测相结合，导致在以高铜浓度为特征的大气气溶胶事件发生后，浮游植物生物量显着下降。在夏季期间，下降趋势更为明显，当时浮游植物种群中主要含有纳米鞭毛，研究区域普遍存在分层和贫营养条件。与先前有关大气铜沉积的发现一起，这些结果表明，富含铜的气溶胶的毒性可能涉及世界大面积海洋。此外，它们强调了海洋生态系统对人为起源的富含铜的气溶胶的脆弱性。由于人为排放物的增加，可以预期会对海洋生态系统产生大规模的负面影响。

著录项

  • 来源
  • 作者

    Antoni Jordi; Gotzon Basterretxea; Antonio Tovar-Sanchez; Andres Alastuey; Xavier Querol;

  • 作者单位

    lnstitut Mediterrani d'Estudis Avancats (Universitat de les Illes Balears-Consejo Superior de Investigaciones Cientificas), 07190 Esporles, Illes Balears, Spain;

    lnstitut Mediterrani d'Estudis Avancats (Universitat de les Illes Balears-Consejo Superior de Investigaciones Cientificas), 07190 Esporles, Illes Balears, Spain;

    lnstitut Mediterrani d'Estudis Avancats (Universitat de les Illes Balears-Consejo Superior de Investigaciones Cientificas), 07190 Esporles, Illes Balears, Spain;

    Institute of Environmental Assessment and Water Research, Consejo Superior de Investigaciones Cientificas, 08028 Barcelona, Spain;

    Institute of Environmental Assessment and Water Research, Consejo Superior de Investigaciones Cientificas, 08028 Barcelona, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    atmospheric dust; trace metal;

    机译：大气尘埃微量金属;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号