Spatial and temporal distribution and abundance of butterflies in the Andrews Experimental Forest, 1994-1996

This database contains information on species abundance according to date and location within the H.J. Andrews Experimental Forest Lookout Creek watershed. The database provides the information needed to assess patterns in the abundance of butterflies across time and space. The distribution and abundance of butterfly species on the Andrews Forest is strongly influenced by geographical scale, elevation, aspect, plant community, management regime, and time of year. Patterns of distribution and abundance are based on an historical total of 80 species, of which 73 are resident species and about 55 of which may be observed in any given year. Butterflies were surveyed at two- week intervals from late April through early October over a three-year period (1994-6). Approximately one-third of the watershed was covered during each visit, thus each area was sampled at about 6 week intervals within each sample season.本数据库收录了H.J.安德鲁斯实验森林（H.J. Andrews Experimental Forest）卢特克里克流域（Lookout Creek watershed）内按日期与空间点位记录的物种丰度数据。本数据库可为评估蝴蝶丰度在时间与空间维度上的分布模式提供所需数据支撑。安德鲁斯森林内蝴蝶物种的分布与丰度，受地理尺度、海拔、坡向、植物群落、经营管理措施以及季节时间的显著影响。本次分布与丰度模式的研究基于历史累计记录的80种蝴蝶，其中73种为定居物种，且任意一年内均可观测到约55种。研究于1994至1996年的三年间，在4月下旬至10月上旬期间以两周为间隔对蝴蝶开展调查。每次调查覆盖流域约三分之一的区域，因此每个调查区域在单个调查季内的取样间隔约为6周。