Cedar Creek Ecosystem Science Reserve site, station Old Field 41 at Cedar Creek, study of plant biomass of Lathyrus venosus in units of gramsPerSquareMeter 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 biomass of Lathyrus venosus measurements in gramsPerSquareMeter units
and were aggregated to a yearly timescale.

EcoTrends项目（EcoTrends project）于2004年由黛布拉·彼得斯博士（Debra Peters，美国农业部农业研究服务局约尔纳达实验牧场约尔纳达盆地长期生态研究站点，USDA-ARS Jornada Experimental Range, Jornada Basin LTER）与阿里尔·卢戈博士（Ariel Lugo，美国农业部森林服务局卢奎洛实验森林卢奎洛长期生态研究站点，USDA-FS Luquillo Experimental Forest, Luquillo LTER）创立，旨在支撑长期生态数据集的采集与分析工作。该项目为大型综合研究项目，核心目标在于提升长期生态数据的可获取性与实际应用率。目前，共有约50个州立及联邦资助的研究站点参与并向EcoTrends项目贡献数据，其中涵盖全部26个长期生态研究（Long-Term Ecological Research, LTER）站点，以及美国农业部农业研究服务局（USDA ARS）、美国农业部森林服务局（USDA Forest Service）、美国能源部（US Department of Energy）、美国地质调查局（US Geological Survey, USGS）资助的站点，另有众多高校相关研究站点加入。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程序，为用户提供持续的数据整合与获取服务。作为LTER溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的组成部分，持续推进的数据整合工作通过人工与自动两种处理方式完成更新。该网络门户由约尔纳达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（Cedar Creek Ecosystem Science Reserve, CDR）的数据集，包含以克每平方米（gramsPerSquareMeter）为单位的Lathyrus venosus生物量测量数据，且已按年际时间尺度进行聚合。