Caspar Creek Experimental Watershed site, station NADP Station CA45, Hopland, CA, study of nitrogen from nitrate in wet deposition in units of kilogramsPerHectare on a monthly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters
(Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and
Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest)
to support the collection and analysis of long-term ecological datasets.
The project is a large synthesis effort focused on improving the accessibility
and use of long-term data. At present, there are ~50 state and federally funded
research sites that are participating and contributing to the EcoTrends project,
including all 26 Long-Term Ecological Research (LTER) sites and sites funded by
the USDA Agriculture Research Service (ARS), USDA Forest Service,
US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal
(http://www.ecotrends.info). This web portal enables the continuation of data
compilation and accessibility by users through an interactive web application.
Ongoing data compilation is updated through both manual and automatic
processing as part of the LTER Provenance Aware Synthesis Tracking
Architecture (PASTA). The web portal is a collaboration between the Jornada LTER
and the LTER Network Office. The following dataset from Caspar Creek Experimental Watershed (CSP)
contains nitrogen from nitrate in wet deposition measurements in kilogramsPerHectare units
and were aggregated to a monthly timescale.

EcoTrends项目于2004年由黛布拉·彼得斯博士（约那盆地长期生态研究站点，Long-Term Ecological Research (LTER)，美国农业部农业研究局约那试验牧场）与阿里尔·卢戈博士（卢基略长期生态研究站点，Long-Term Ecological Research (LTER)，美国农业部林务局卢基略试验林）创立，旨在支持长期生态数据集的收集与分析工作。该项目是一项大型综合研究计划，致力于提升长期生态数据的可获取性与使用效率。目前共有约50个州级及联邦资助的研究站点参与并为EcoTrends项目贡献数据，其中包括全部26个长期生态研究（Long-Term Ecological Research, LTER）站点，以及由美国农业部农业研究局（Agricultural Research Service, ARS）、美国农业部林务局、美国能源部、美国地质调查局（United States Geological Survey, USGS）和众多高校资助的研究站点。EcoTrends项目的数据可通过探索性网络门户（http://www.ecotrends.info）获取。该网络门户依托交互式网页应用，支持用户持续开展数据汇编与数据访问工作。作为溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，日常数据汇编工作通过人工与自动两种处理方式进行更新。该网络门户是约那LTER与LTER网络办公室的合作成果。来自卡斯帕溪试验流域（Caspar Creek Experimental Watershed, CSP）的下述数据集包含以千克每公顷为单位的湿沉降硝酸盐氮实测数据，且已聚合至月度时间尺度。