North Temperate Lakes site, station Big Muskellunge Lake, study of animal abundance of Notropis rubellus 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 Notropis rubellus measurements in numberPerEffort units
and were aggregated to a yearly timescale.

EcoTrends项目由黛布拉·彼得斯博士（约拿盆地长期生态研究站，美国农业部农业研究服务局约拿实验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究站，美国农业部林务局卢奎洛实验森林）于2004年创立，旨在支撑长期生态数据集的采集与分析工作。本项目为一项大型综合研究计划，核心目标是提升长期生态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EcoTrends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，简称LTER）站点，以及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）资助的站点与众多高校站点。EcoTrends项目的数据可通过探索型网络门户（http://www.ecotrends.info）获取，该门户依托交互式Web应用，为用户持续提供数据汇编与数据获取服务。作为长期生态研究溯源感知综合跟踪架构（PASTA）的组成部分，当前正在进行的数据汇编工作通过人工与自动两种处理模式完成更新。该网络门户由约拿盆地LTER站与LTER网络办公室联合开发。以下来自北温带湖泊（North Temperate Lakes，简称NTL）的数据集，包含红身雅罗鱼（Notropis rubellus）的种群丰度测量数据，单位为numberPerEffort，并已按年尺度完成聚合。