LBA-ECO ND-02 STREAM WATER CHEMISTRY, PARAGOMINAS, PARA, BRAZIL: 1999-2005

This data set includes measurements of dissolved nutrient and organic carbon concentrations, as well as dissolved oxygen, alkalinity, conductivity, turbidity, pH, and discharge from three streams located in mixed land use (crop fields, pastures, secondary vegetation, and forest) and two streams in entirely forested landscapes near Paragominas in the state of Para, Brazil. Stream water samples were collected during two different periods: 1) weekly from August 1999 to July 2001 at location Igarape 54, Station 5 and 2) monthly from April 2003 through October 2005 at all of the stations. The exact start date and suite of measurements vary by location. In addition, samples from precipitation collectors at the Paragominas Meteorological Station were measured for nutrient concentrations every two weeks from 1999 to 2001. There are two comma delimited ASCII data files with this data set.

本数据集包含溶解态营养盐与有机碳浓度、溶解氧、碱度、电导率、浊度、pH值以及径流量的实测数据，采样点涵盖巴西帕拉州帕拉戈米纳斯附近的5条溪流：其中3条流经混合土地利用类型（农田、牧场、次生植被与森林），另外2条则完全位于森林景观中。溪流水样的采集分为两个阶段：1）1999年8月至2001年7月期间，每周在伊加拉佩54号站（Igarape 54, Station 5）进行采样；2）2003年4月至2005年10月期间，在所有采样点每月采样一次。各采样点的具体起始采样日期与测量指标组合存在差异。此外，1999年至2001年期间，每两周对帕拉戈米纳斯气象站（Paragominas Meteorological Station）降水收集器采集的样品进行营养盐浓度测定。本数据集附带两个以逗号分隔的ASCII数据文件。