Cedar Creek Ecosystem Science Reserve site, station Old Fields 72, 35, 45, 5, study of plant species richness in units of numberPerPt3SquareMeters 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 species richness measurements in numberPerPt3SquareMeters units and were aggregated to a yearly timescale.

生态趋势（EcoTrends）项目由黛布拉·彼得斯博士（约拿盆地长期生态研究站点，美国农业部农业研究服务局（USDA-ARS）约拿实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究站点，美国农业部林务局（USDA-FS）卢奎洛实验林）于2004年创立，旨在支撑长期生态数据集的收集与分析工作。该项目属于大型综合研究计划，核心目标是提升长期生态数据的可获取性与复用水平。目前共有约50个州立与联邦资助的研究站点参与并为生态趋势项目贡献数据，其中包含全部26个长期生态研究（Long-Term Ecological Research，以下简称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）及众多高校资助的站点。生态趋势项目的数据集可通过探索性Web门户（http://www.ecotrends.info）获取。该Web门户通过交互式Web应用，支持用户持续开展数据整合与数据获取工作。作为长期生态研究溯源感知综合跟踪架构（PASTA）的组成部分，持续进行的数据整合工作通过手动与自动处理两种方式完成更新。该Web门户由约拿盆地LTER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numberPerPt3SquareMeters为单位的植物物种丰富度测量数据，并已按年度时间尺度进行聚合。