Tracer Additions for Spiraling Curve Characterization (TASCC): Quantifying stream nutrient uptake kinetics from ambient to saturation
Tracer Additions for Spiraling Curve Characterization (TASCC): Quantifying stream nutrient uptake kinetics from ambient to saturation
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用于螺旋曲线表征 (TASCC) 的示踪剂添加：量化从环境到饱和的流养分吸收动力学
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发表时间：
2010
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通讯作者：
R. McNamara
中科院分区：
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作者：
T. Covino;B. McGlynn;R. McNamara
流营养示踪剂添加和营养螺旋指标经常被用来量化湖泊生态系统的行为。特别令人关注的是养分浓度对养分保持和输出的影响。然而，在一定浓度范围内表征螺旋响应曲线仍然具有挑战性，部分原因是使用传统的（例如，平台或稳态）方法。在这里，我们概述并展示了一种新的方法来量化营养吸收动力学从环境到饱和使用示踪剂添加螺旋曲线表征（TASCC）。这种方法提供了一种快速和相对简单的技术，用于量化环境螺旋参数，营养吸收动力学和动力学模型参数化，以及评估河流接近饱和度。我们比较了传统的穿透曲线集成和平台的方法从TASCC的结果。我们强调了TASCC方法的优点，用于通过单一示踪剂添加实验表征从环境到饱和的连续螺旋响应曲线，以及其对实现高原条件（即，稳定状态）是不切实际的。
Stream nutrient tracer additions and nutrient spiraling metrics are frequently used to quantify lotic ecosystem behavior. Of particular concern is the influence nutrient concentration exerts on nutrient retention and export. However, characterizing spiraling response curves across a range of concentrations has remained challenging, in part due to the large effort required to develop these curves using traditional (e.g., plateau or steadystate) approaches. Here we outline and demonstrate a new approach to quantify nutrient uptake kinetics from ambient to saturation using Tracer Additions for Spiraling Curve Characterization (TASCC). This approach provides a rapid and relatively easy technique for quantifying ambient‐spiraling parameters, nutrient uptake kinetics and kinetic model parameterization, and assessment of stream proximity to saturation. We compare the results from TASCC to traditional breakthrough curve integrated and plateau approaches. We highlight the advantages of the TASCC approach for characterizing continuous spiraling response curves from ambient to saturation with a single tracer addition experiment, and its applicability to larger rivers where achieving plateau conditions (i.e., steady‐state) is impractical.