SCPN Habitat-based bird community monitoring data 2007-2018

This data package includes data that were collected from 2007-2018 as part of the Southern Colorado Plateau Network's habitat-based bird community monitoring protocol. Data were collected at eight ecological sites, representing homogenous habitat and soil types, at six national park service units (BAND, CACH, GRCA, MEVE, PEFO, WUPA). Data was collected in four overall habitat types: grassland-shrubland, riparian woodland, pinyon-juniper woodland, and mixed-conifer forest. The data set contains habitat-specific repeat visit bird survey data collected every three years at each park using point counts with distance sampling. Covariates influencing species detectability were collected during each survey, including percentage cloud cover, wind speed, precipitation, environmental noise, and survey time and date. In addition, microhabitat data was collected in each survey year at each point count station, including plotless measures of tree basal area by species and snag basal area, percentage canopy cover, sapling density, and categorical measures of foliage cover and foliage height in six different vegetation strata (herbaceous, dwarf shrub, shrub, sub-canopy, canopy, and emergent).

本数据集包含2007年至2018年间采集的数据，该数据为南科罗拉多高原网络（Southern Colorado Plateau Network）基于生境的鸟类群落监测规程的组成部分。数据采集于美国国家公园管理局（National Park Service）所辖6个园区（BAND、CACH、GRCA、MEVE、PEFO、WUPA）内的8个均质生境与土壤类型生态样地。本次调查覆盖四类总体生境类型：灌草丛草原、河岸林地、矮松-桧木林地与混合针叶林。本数据集包含各生境特异性的重复访查鸟类调查数据，采用距离抽样样点计数法，在每个园区每三年开展一次调查。每次调查均记录了影响物种探测率的协变量，包括云量占比、风速、降水量、环境噪音以及调查时间与日期。此外，每个调查年度均在每个样点计数站采集微生境数据，包括按物种分类的无样地法测定树木基面积（胸高断面积）与枯立木基面积、冠层盖度百分比、幼树密度，以及6类不同植被层（草本层、矮灌木层、灌木层、亚冠层、冠层与上层乔木层）的叶盖度和叶高度分类指标。