North Temperate Lakes site, station Lake Wingra, study of animal abundance of Lepomis cyanellus X L. macrochirus 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 Lepomis cyanellus X L. macrochirus measurements in numberPerEffort units
and were aggregated to a yearly timescale.

EcoTrends项目由Debra Peters博士（约拿盆地长期生态研究站点（Jornada Basin LTER），美国农业部农业研究局约拿实验牧场（USDA-ARS Jornada Experimental Range））与Ariel Lugo博士（卢奎洛长期生态研究站点（Luquillo LTER），美国农业部林务局卢奎洛实验森林（USDA-FS Luquillo Experimental Forest））于2004年创立，旨在支持长期生态数据集的采集与分析工作。
该项目是一项大型综合研究计划，核心目标为提升长期生态数据的可获取性与应用效能。目前共有约50个由州级与联邦级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（Long-Term Ecological Research, LTER）站点，以及由美国农业部农业研究服务局（ARS）、美国农业部林务局、美国能源部、美国地质调查局（USGS）与众多高校资助的各类站点。
EcoTrends项目的数据可通过探索型网络门户（http://www.ecotrends.info）获取。该门户依托交互式网络应用程序，为用户持续提供数据汇编与数据获取服务。作为LTER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站点与LTER网络办公室联合开发。
本次来自北温带湖泊（North Temperate Lakes, NTL）的数据集，包含以numberPerEffort为单位的Lepomis cyanellus × L. macrochirus种群丰度测定数据，且该数据集已按年度时间尺度完成聚合。