Cedar Creek Ecosystem Science Reserve site, station Old Field 70 at Cedar Creek, study of plant biomass of Calamovilfa longifolia 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 Calamovilfa longifolia measurements in gramsPerSquareMeter units
and were aggregated to a yearly timescale.

EcoTrends项目由Debra Peters博士（乔达纳盆地长期生态研究站点（Long-Term Ecological Research, LTER），美国农业部-农业研究服务局乔达纳实验牧场）与Ariel Lugo博士（卢奎洛长期生态研究站点（Long-Term Ecological Research, LTER），美国农业部林业局卢奎洛实验森林）于2004年创立，旨在支持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计划，核心目标是提升长期数据的可获取性与应用价值。目前共有约50个州级与联邦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（ARS）、美国农业部林业局、美国能源部、美国地质调查局（USGS）及众多高校资助的站点。EcoTrends项目的数据可通过探索式网络门户（http://www.ecotrends.info）获取，该门户依托交互式Web应用程序，为用户持续提供数据整合与数据获取服务。持续开展的数据整合工作作为长期生态研究溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）的一部分，通过手动与自动结合的处理流程完成更新。本探索式网络门户由乔达纳LTER站点与LTER网络办公室联合开发。下述取自雪松溪生态系统科学保护区（Cedar Creek Ecosystem Science Reserve, CDR）的数据集，包含以克每平方米为单位的长叶须芒草（Calamovilfa longifolia）植物生物量实测数据，且已按年尺度完成聚合。