Santa Rita Experimental Range site, station Pasture 5S at Santa Rita Experimental Range, study of plant cover of Echinocereus (hedgehog cactus) 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 Santa Rita Experimental Range (SRE) contains plant cover of Echinocereus (hedgehog cactus) measurements in percent units and were aggregated to a yearly timescale.EcoTrends项目于2004年由隶属于约那盆地长期生态研究站（Long-Term Ecological Research, LTER）、美国农业部农业研究服务局约那实验牧场的黛布拉·彼得斯博士，与隶属于卢奎约长期生态研究站（Long-Term Ecological Research, LTER）、美国农业部森林服务局卢奎约实验森林的阿里尔·卢戈博士共同创立，旨在支持长期生态数据集的收集与分析工作。 该项目是一项大型数据综合研究项目，核心目标在于提升长期生态数据的可获取性与应用价值。 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本项目并贡献数据，其中涵盖全部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（Agricultural Research Service, ARS）、美国农业部森林服务局、美国能源部、美国地质调查局（United States Geological Survey, USGS）及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。该门户依托交互式网络应用，支持用户持续开展数据汇编与数据获取工作。 作为长期生态研究站溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，持续开展的数据汇编工作通过人工与自动两种处理方式完成更新。 该网络门户是约那LTER与LTER网络办公室的合作成果。 来自圣丽塔实验牧场（Santa Rita Experimental Range, SRE）的下述数据集包含以百分比为单位的鹿角柱属（Echinocereus，刺猬仙人掌）植被盖度测量数据，且已聚合至年度时间尺度。