BLM ORWA Avian Species Analysis in Old Growth Forests Using Acoustic Monitoring in the Cascade-Siskiyou National Monument

The Cascade-Siskiyou National Monument (CSNM), is located at the crossroads of multiple ecoregions, has complex geology, and is a recognized biodiversity hotspot. The Norther Spotted Owl (Strix occidentalis caurina) (NSO), a federally Threatened species within the CSNM, and other sensitive old growth dependent species however, have received relatively little continuous monitoring attention since the area became a monument. Survey work has been done sporadically in the existing coniferous old-growth forest only because of the focus of Northwest Forest Plan Survey and Manage inventories. As such, the NSO and other owls and old growth dependent species of CSNM are relatively poorly known. Trend information of these species is vital to effective management of the area for biodiversity. As part of this analysis, areas recently affected by wildfire may be selected for comparison to similar nearby areas that were not burned. This project will test the usability of sound stations for owls and other species, and creating a baseline for future studies and monitoring. Results of this analysis could greatly increase the scientific and ecological knowledge of old growth and late seral stage species of the CSNM. It will also influence future land management decisions, and enhance and increase public awareness and support of conservation of the CSNM.