North Temperate Lakes site, station Allequash Lake, study of animal abundance of Phoxinus neogaeus in units of numberPerEffort 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 North Temperate Lakes (NTL)
contains animal abundance of Phoxinus neogaeus measurements in numberPerEffort units
and were aggregated to a yearly timescale.

EcoTrends项目由Debra Peters博士（乔纳达盆地长期生态研究站（Long-Term Ecological Research, LTER），美国农业部农业研究局乔纳达实验牧场）与Ariel Lugo博士（卢奎略长期生态研究站（Long-Term Ecological Research, LTER），美国农业部林业局卢奎略实验森林）于2004年发起创立，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计划，核心目标在于提升长期生态数据的可获取性与利用效能。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）等机构资助的站点与众多高校科研站点。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页应用，支持用户持续开展数据汇编与数据获取工作。正在推进的数据汇编工作通过手动与自动处理相结合的方式完成更新，该流程依托长期生态研究溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）实现。本网络门户由乔纳达LTER站点与LTER网络办公室合作开发。本次来自北温带湖泊（North Temperate Lakes, NTL）的数据集，包含以单位采样投入下的数量为计量单位的北红腹鱥（Phoxinus neogaeus）种群丰度测量数据，并已按年度时间尺度完成聚合。