Estimated densities (mean ± SE) ha-1 for 61 butterfly species observed across 25 sites in northwest Indiana, USA.

Densities are mean densities from twenty-one survey dates at each site for a total of 525 surveys across sites. Habitat type with highest indicator value (Max Group) for each butterfly species [42] and Effective Strip Width (ESW) [31] for each species are shown.

各点位的种群密度为对应站点21次调查的平均密度，所有站点累计开展了525次调查。本数据集收录了各蝴蝶物种的最高指示值生境类型（最优类群，Max Group）[42]，以及各物种的有效条带宽度（Effective Strip Width, ESW）[31]。