...
首页> 外文期刊>Marine ecology progress series >Comparison of the alkalinity and calcium anomaly techniques to estimate rates of net calcification
【24h】

Comparison of the alkalinity and calcium anomaly techniques to estimate rates of net calcification

机译:比较碱度和钙异常技术以估算净钙化速率

获取原文
获取原文并翻译 | 示例
           

摘要

Among current methods used to estimate calcification rates, the alkalinity anomaly technique has been widely used for short-term incubations as it is nondestructive and is based on a parameter that is easily and accurately measured. However, total alkalinity is also influenced by other processes such as nutrient consumption and release, and may also require corrections. The calcium anomaly technique has been little used because calcium is notoriously difficult to measure precisely and several species precipitate calcite with varying contents of magnesium. In this study, calcification rates of benthic calcifiers-a crustose coralline alga, a coral, a sea urchin, and a mussel-were estimated with these 2 approaches. Rates derived using the 2 methods were well correlated for all species and did not significantly differ from each other for corals incubated in the light and dark, and for coralline algae when incubated in the dark. Coralline algae appear to produce magnesian calcite in the light. Sea urchins and mussels released relatively large amounts of am monia, and a correction of the alkalinity anomaly method was necessary. For urchins, calcification rates based on total alkalinity were higher than rates based on calcium as these organisms incorporate magnesium. For mussels, the corrected alkalinity anomaly technique provided values close to those based on calcium anomaly at low incubation densities, but values were significantly lower at high calcification and excretion rates, suggesting that ammonium con centrations were underestimated or another process affected total alkalinity. The results demonstrate that the alkalinity and calcium anomaly techniques are not robustly applicable to all calcifiers without careful consideration of organism physiology and mineralogy.
机译:在目前用于估计钙化速率的方法中,碱度异常技术由于其无损且基于易于准确测量的参数,因此已广泛用于短期孵育。但是,总碱度也受其他过程(如营养物质的消耗和释放)的影响,并且可能还需要进行校正。钙异常技术很少使用,这是因为众所周知,钙很难精确测量,并且有几种沉淀出方解石且镁含量不同。在本研究中,通过这两种方法估算了底栖钙化剂(甲壳珊瑚藻,珊瑚,海胆和贻贝)的钙化率。使用这两种方法得出的速率与所有物种均具有良好的相关性,并且在暗处和暗处孵育的珊瑚以及在暗处孵育的珊瑚藻彼此之间没有显着差异。珊瑚藻藻似乎在光下产生镁方解石。海胆和贻贝释放出相对大量的氨水,因此必须纠正碱度异常方法。对于海胆,由于这些生物体中含有镁,因此基于总碱度的钙化率高于基于钙的钙化率。对于贻贝,校正后的碱度异常技术在低孵化密度下提供的值接近于基于钙异常的值,但在高钙化和排泄速率下的值明显较低,这表明铵浓度被低估了,或者另一个过程影响了总碱度。结果表明,如果不仔细考虑生物的生理学和矿物学,则碱度和钙异常技术不适用于所有钙化剂。

著录项

  • 来源
    《Marine ecology progress series》 |2015年第7期|1-12|共12页
  • 作者单位

    Univ Paris 06, Univ Paris 04, Lab Oceanog Villefranche, Observ Oceanol,UMR 7093, F-06230 Villefranche Sur Mer, France|CNRS, Lab Oceanog Villefranche, Observ Oceanol, UMR 7093, F-06230 Villefranche Sur Mer, France;

    Univ Paris 06, Univ Paris 04, Lab Oceanog Villefranche, Observ Oceanol,UMR 7093, F-06230 Villefranche Sur Mer, France|CNRS, Lab Oceanog Villefranche, Observ Oceanol, UMR 7093, F-06230 Villefranche Sur Mer, France|Univ Genoa, DiSTAV, I-16132 Genoa, Italy;

    Univ Paris 06, Univ Paris 04, Lab Oceanog Villefranche, Observ Oceanol,UMR 7093, F-06230 Villefranche Sur Mer, France|CNRS, Lab Oceanog Villefranche, Observ Oceanol, UMR 7093, F-06230 Villefranche Sur Mer, France;

    Univ Paris 06, Univ Paris 04, Lab Oceanog Villefranche, Observ Oceanol,UMR 7093, F-06230 Villefranche Sur Mer, France|CNRS, Lab Oceanog Villefranche, Observ Oceanol, UMR 7093, F-06230 Villefranche Sur Mer, France;

    Univ Paris 06, Univ Paris 04, Lab Oceanog Villefranche, Observ Oceanol,UMR 7093, F-06230 Villefranche Sur Mer, France|CNRS, Lab Oceanog Villefranche, Observ Oceanol, UMR 7093, F-06230 Villefranche Sur Mer, France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Calcification; Benthic species; Total alkalinity; Calcium; Methods;

    机译:钙化;贝类;总碱度;钙;方法;

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