Mountain Birdwatch: 2010-2022

Mountain Birdwatch (MBW) is a long-term community science monitoring program for 10 bird and 1 mammal species that breed in high-elevation spruce-fir forests of the northeastern United States. Initiated in 2000 as Mountain Birdwatch 1.0, MBW 2.0 (years 2010 and onwards) provides the only region-wide source of population information on these high-elevation species. Each June, under the coordination of the Vermont Center for Ecostudies, volunteers perform repeated point counts at nearly 750 long-term fixed sampling sites along established hiking trails in Vermont, New Hampshire, Maine, and eastern New York (Catskills and Adirondacks). The primary emphasis was placed on Bicknell’s Thrush, a montane-fir specialist that breeds only in the Northeastern U.S. and adjacent portions of Canada. In 2010, the program underwent many positive changes to reemerge as Mountain Birdwatch 2.0. All of the sampling locations prior to 2010 were permanently retired, and new sampling locations were chosen using a generalized random tessellation stratified (GRTS) procedure. For more information see: https://vtecostudies.org/projects/mountains/mountain-birdwatch/ These data on KNB contain all of the point count for the 11 monitored species from 2010 to 2022 with the exception of data from 6 routes in Maine that occur on commercial timberlands. Our confidentiality agreements with those timber operations prevent us from sharing those data in a non-aggregated format.

山地观鸟计划（Mountain Birdwatch，MBW）是一项长期公民科学监测项目，旨在对美国东北部高海拔云杉冷杉林内繁殖的10种鸟类与1种哺乳类物种开展监测。该项目于2000年启动，初代版本为Mountain Birdwatch 1.0；2010年起推出的MBW 2.0，是目前该区域内唯一可获取此类高海拔物种种群信息的数据源。每年6月，在佛蒙特生态研究中心（Vermont Center for Ecostudies）的协调下，志愿者会在佛蒙特州、新罕布什尔州、缅因州以及纽约州东部（卡茨基尔与阿迪朗达克地区）的既定徒步路线沿线，于近750个长期固定采样点开展重复定点计数工作。项目最初的核心监测对象为比氏鸫（Bicknell’s Thrush），这是一种山地冷杉专属物种，仅在美国东北部及加拿大邻近区域繁殖。2010年，该项目历经多项优化升级，以MBW 2.0的形式重新上线；2010年前的所有采样点位均被永久停用，新采样点位通过广义随机镶嵌分层（generalized random tessellation stratified，GRTS）法选取。更多详细信息可参阅：https://vtecostudies.org/projects/mountains/mountain-birdwatch/。KNB平台收录的本数据集包含2010年至2022年间11种监测物种的全部定点计数数据，但排除了缅因州境内6处位于商业用材林内的采样路线数据。鉴于我们与相关林业运营方签署了保密协议，无法以非聚合格式共享该部分数据。