Cedar Creek Ecosystem Science Reserve site, station Old Field 24 at Cedar Creek, study of plant biomass of Achillea millefolium lanulosa 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 Achillea millefolium lanulosa measurements in gramsPerSquareMeter units
and were aggregated to a yearly timescale.

EcoTrends项目由黛布拉·彼得斯博士（Jornada盆地长期生态研究（Long-Term Ecological Research, LTER）网络、美国农业部农业研究服务局（USDA-ARS）Jornada试验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究（LTER）网络、美国农业部林务局（USDA-FS）卢奎洛试验林）于2004年创立，旨在支持长期生态数据集的收集与分析工作。该项目为大型综合研究项目，核心目标是提升长期生态数据的可获取性与应用效率。目前，共有约50个州立及联邦资助的研究站点参与并为EcoTrends项目贡献数据，其中涵盖全部26个长期生态研究（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）与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页应用，支持用户持续开展数据汇编与数据获取工作。作为长期生态研究网络溯源感知综合跟踪架构（PASTA）的组成部分，正在推进的数据汇编工作通过人工与自动两种处理模式进行更新。该网络门户是Jornada LTER与LTER网络办公室的合作成果。以下来自雪松溪生态系统科学保护区（CDR）的数据集，包含以克每平方米（gramsPerSquareMeter）为单位的欧蓍草（Achillea millefolium lanulosa）生物量测量数据，且已按年度时间尺度完成聚合。