Cedar Creek Ecosystem Science Reserve site, station Isanti County, MN (FIPS 27059), study of population (urban) in units of number 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 population (urban) measurements in number units
and were aggregated to a yearly timescale.

EcoTrends项目于2004年由黛布拉·彼得斯博士（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（USDA-ARS）乔达纳实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究站点（Long-Term Ecological Research, LTER），美国农业部林务局（USDA-FS）卢奎洛实验林）创立，旨在支撑长期生态数据集的采集与分析工作。该项目为一项大型综合研究计划，核心聚焦于提升长期生态数据的可获取性与使用效率。目前，约有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服务局（USDA-ARS）、美国农业部林务局（USDA-FS）、美国能源部、美国地质调查局（US Geological Survey, USGS）及众多高校资助的研究站点。EcoTrends项目的数据集可通过探索性网络门户（http://www.ecotrends.info）获取。该网络门户依托交互式Web应用，支持用户持续开展数据整合与数据访问工作。作为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。该网络门户由乔达纳LTER站点与LTER网络办公室联合打造。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，包含以数值为单位的城市种群测量数据，并已按年际时间尺度完成聚合。