Spalding's Catchfly (Silene Spaldingii) Monitoring, Craig Mountain, Idaho: 2nd Year Results

摘要

Spaldings catchfly (Silene spaldingii) is a rare plant endemic to the bunchgrass, sagebrush, and open pine communities of the inland Pacific Northwest. Large portions of these habitats have been eliminated by cultivation or degraded by livestock grazing. Spaldings catchfly was listed as Threatened by the U.S. Fish and Wildlife Service in 2001. The largest occurrence of Spaldings catchfly in Idaho is south of Lewiston in the Snake River Canyon, along the western flank of Craig Mountain. The Craig Mountain population extends across more than 1,300 hectares (3,250 acres), and involves lands managed by the Bureau of Land Management, The Nature Conservancy, and Idaho Department of Fish and Game. This population has been the focus of all Spaldings catchfly monitoring in Idaho. In 2002, the U.S. Fish and Wildlife Service contracted with the Idaho Conservation Data Center to develop and implement a monitoring protocol for Spaldings catchfly and its habitat. This report summarizes two years of data collected on individual Spaldings catchfly plants, and includes baseline information on the condition of its associated habitat.