Santa Rita Experimental Range site, station Santa Rita Experimental Range pastures where the existing mesquite were killed and the pastures were grazed: pastures 3, 5N, 5S, 6B and 12B, study of plant cover of Hibiscus (rosemallow) 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 Hibiscus (rosemallow) measurements in percent units
and were aggregated to a yearly timescale.

EcoTrends项目由黛布拉·彼得斯博士（Jornada Basin长期生态研究站，美国农业部农业研究局Jornada试验牧场）与阿里尔·卢戈博士（Luquillo长期生态研究站，美国农业部林业局Luquillo试验林）于2004年发起，旨在支撑长期生态数据集的采集与分析工作。
本项目为大型综合研究行动，核心目标是提升长期生态数据的可及性与应用效率。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局（Agricultural Research Service, ARS）、美国农业部林业局、美国能源部、美国地质调查局（United States Geological Survey, USGS）资助的站点与多所高校的相关站点。
EcoTrends项目的数据集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程序，支持用户持续开展数据整合与数据获取操作。作为溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，常态化的数据整合工作通过手动与自动两种处理方式进行更新。本网络门户由Jornada LTER与LTER网络办公室联合打造。
以下来自圣丽塔试验牧场（Santa Rita Experimental Range, SRE）的数据集，包含以百分比为单位的木槿属（Hibiscus，俗称玫瑰锦葵）植物盖度测量数据，且已聚合至年度时间尺度。