Fig. 2

Species accumulation curves for active acoustic and mist netting surveys in the National Park Service National Capital Region 2003–2018. Darker lines and polygons are 2003–2004 samples and standard deviations, and lighter lines and polygons are 2016–2018 samples and standard deviations with a acoustic sampling both 2003–2004 and 2017; b mist netting with only 6 species captured 2003–2004; and c mist netting with all 9 species captured 2003–2004 and 2016–2018