North Temperate Lakes site, station Lake Mendota, study of animal abundance of Pomoxis annularis 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 Pomoxis annularis measurements in numberPerEffort units and were aggregated to a yearly timescale.EcoTrends项目由黛布拉·彼得斯博士（约纳达盆地长期生态研究网络（Long-Term Ecological Research, LTER），美国农业部农业研究局约纳达试验牧场）与阿里尔·卢戈博士（卢奎洛长期生态研究网络（Long-Term Ecological Research, LTER），美国农业部林务局卢奎洛试验林）于2004年创立，旨在支持长期生态数据集的采集与分析工作。 该项目为大型综合研究计划，核心目标是提升长期生态数据的可获取性与利用效率。 目前已有约50个由州级及联邦政府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，以及由美国农业部农业研究局（Agricultural Research Service, ARS）、美国农业部林务局（United States Forest Service, USDA-FS）、美国能源部（United States Department of Energy）、美国地质调查局（US Geological Survey, USGS）及众多高校资助的相关站点。 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络应用程序，支持用户持续开展数据汇编与数据访问工作。 数据的持续汇编更新通过人工与自动两种处理流程完成，该流程隶属于长期生态研究网络溯源感知综合跟踪架构（Provenance Aware Synthesis Tracking Architecture, PASTA）。 本网络门户是约纳达LTER与LTER网络办公室的合作成果。 下述来自北温带湖泊（North Temperate Lakes, NTL）的数据集，包含以单位采样effort为计量单元的白斑刺盖太阳鱼（Pomoxis annularis）种群丰度实测数据，且已按年度时间尺度完成聚合。