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首页> 外文期刊>Ecological research >Global dataset for carbon and nitrogen stable isotope ratios of Iotic periphyton
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Global dataset for carbon and nitrogen stable isotope ratios of Iotic periphyton

机译：离子附生植物碳氮稳定同位素比的全球数据集

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Carbon and nitrogen stable isotope ratios (C-13 and N-15) have been widely employed in food web analysis. In lotic environments, periphyton is a major primary producer that makes a large contribution to food web production as well as carbon and nitrogen cycling. While the C-13 and N-15 values have many advantages as a natural tracer, the controls over their high spatial and temporal variability in stream periphyton are not well known. Here, we present the global dataset of C-13 and N-15 values of lotic periphyton from 54 published and two unpublished sources, including 978 observations from 148 streams/rivers in 38 regions around the world, from arctic to tropical sites. The 54 published sources were articles recorded during the period of 1994-2016 in 25 academic journals. The two unpublished sources were from the authors' own data. The dataset showed that C-13 and N-15 values of periphyton ranged from -47.3 to -9.3 parts per thousand and from -5.6 to +22.6 parts per thousand, respectively. The dataset also includes physicochemical factors (altitude, coordinates, catchment area, width, depth, geology, vegetation, canopy coverage, biome, season, presence of anadromous salmon, temperature, pH, current velocity, and discharge), nutrient data (nitrate and ammonium concentrations), and algal attributes (chlorophyll a concentration, algal species compositions, and carbonates removal) in streams/rivers studied, all of which may help interpret the C-13 and N-15 values of periphyton. The metadata file outlines structure of all the data and with references for data sources, providing a resource for future food web studies in stream and river ecosystems.
机译：碳和氮稳定同位素比（C-13和N-15）已广泛用于食物网分析。在抽水环境中，附生植物是主要的主要生产者，对食物网的生产以及碳和氮的循环做出了巨大贡献。尽管C-13和N-15值具有作为天然示踪剂的许多优点，但对它们在水生附生植物中高时空变化的控制尚不清楚。在这里，我们介绍了来自54个已公开和两个未公开来源的抽水性附生植物C-13和N-15值的全球数据集，包括从北极到热带地区的38个地区的148个河流/河道的978观测值。 1994年至2016年期间，有25篇学术期刊记录了54篇公开发表的文章。这两个未发表的资料来自作者自己的数据。数据集显示，周生植物的C-13和N-15值分别为-47.3至-9.3千分之和-5.6至+22.6千分之几。数据集还包括理化因素（海拔，坐标，集水区，宽度，深度，地质，植被，树冠覆盖率，生物群落，季节，无鲑鱼的存在，温度，pH，流速和流量），养分数据（硝酸盐和河流中的氨浓度）和藻类属性（叶绿素a浓度，藻类组成和碳酸盐去除），所有这些都可能有助于解释周生藻的C-13和N-15值。元数据文件概述了所有数据的结构，并引用了数据源，为将来在河流和河流生态系统中进行食物网研究提供了资源。

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