...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Free Zinc Ion and Dissolved Orthophosphate Effects on Phytoplankton from Coeur d'Alene Lake, Idaho
【24h】

Free Zinc Ion and Dissolved Orthophosphate Effects on Phytoplankton from Coeur d'Alene Lake, Idaho

机译：爱达荷州科达伦湖中游离锌离子和溶解的正磷酸盐对浮游植物的影响

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

Coeur d'Alene Lake in northern Idaho is fed by two major rivers: the Coeur d'Alene River from the east and the St. Joe River from the south, with the Spokane River as its outlet to the north. This phosphorus-limited lake has been subjected to decades of mining (primarily for zinc and silver) and other anthropogenic inputs. A 3~2 full-factorial experimental design was used to examine the interactive effects of free (uncomplexed) zinc ion and dissolved-orthophosphate concentrations on phytoplankton that were isolated from two sites along a longitudinal zinc-concentration gradient in Coeur d'Alene Lake. The two sites displayed different dominant taxa. Chlorella minutissima, a dominant species near the southern St. Joe River inlet, exhibited greater sensitivity to free Zn ions than Asterionella formosa, collected nearer the Coeur d'Alene River mouth with elevated dissolved-zinc concentrations. Empirical phytoplankton-response models were generated to describe phytoplankton growth in response to remediation strategies in the surrounding watershed. If dissolved Zn can be reduced in the water column from >500 nM (i.e., current concentrations near and down stream of the Coeur d'Alene River plume) to < 3 nM (i.e., concentrations near the southern St. Joe River inlet) such that the lake is truly phosphorus limited, management of phosphorus inputs by surrounding communities will ultimately determine the limnologic state of the lake.
机译：爱达荷州北部的Coeur d'Alene湖有两条主要河流：东部的Coeur d'Alene河和南部的圣乔河，斯波坎河为北部的出水口。这个受磷限制的湖泊已经经历了数十年的开采（主要是锌和银）和其他人为输入。使用3到2个全因子实验设计，研究了沿Coeur d'Alene Lake沿纵向锌浓度梯度从两个位置分离的游离（未络合的）锌离子和溶解的正磷酸盐浓度对浮游植物的相互作用。这两个站点显示出不同的优势类群。小绿藻（Chlorella minutissima）是圣乔河（St. Joe River）南部进水口附近的优势物种，对游离锌离子的敏感性要高于福尔摩沙菌（Asterionella formosa），而福尔摩沙藻则较靠近Coeur d'Alene河口，且溶解锌浓度较高。产生了经验性浮游植物反应模型来描述浮游植物对周围流域整治策略的响应。如果溶解的锌可以在水柱中从> 500 nM（即，Coeur d'Alene河羽流附近和下游的当前浓度）降低到<3 nM（即，圣乔河南部入口附近的浓度），则由于该湖确实受到磷的限制，周围社区对磷的输入进行管理将最终决定该湖的湖床状态。

著录项

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