Cedar Creek Ecosystem Science Reserve site, station Old Field 32 at Cedar Creek, study of plant cover of Rhus in units of percent on a yearly 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 Cedar Creek Ecosystem Science Reserve (CDR) contains plant cover of Rhus measurements in percent units and were aggregated to a yearly timescale.EcoTrends项目由黛布拉·彼得斯博士（乔纳达盆地长期生态研究站，美国农业部农业研究服务局乔纳达实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究站，美国农业部林务局卢奎洛实验林）于2004年创立，旨在支持长期生态数据集的采集与分析。该项目为大型综合研究工作，核心目标是提升长期数据的可获取性与使用率。目前共有约50个由州政府与联邦政府资助的研究站点参与并为EcoTrends项目贡献数据，其中包含全部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服务局（ARS）、美国农业部林务局、美国能源部、美国地质调查局（USGS）与众多高校资助的站点。EcoTrends项目的数据可通过探索性网络门户（http://www.ecotrends.info）获取，该门户通过交互式Web应用程序，支持用户持续开展数据汇编与数据访问工作。持续的数据汇编工作依托长期生态研究溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA），通过手动与自动两种处理方式完成更新。该网络门户由乔纳达LTER站点与LTER网络办公室合作开发。以下来自雪松溪生态系统科学保护区（CDR）的数据集，包含以百分比为单位的盐肤木属（Rhus）植物盖度测量数据，并已按年度时间尺度完成聚合。