Field Notes
U.S. Fish & Wildlife Service
Field Notes Entry   
San Rafael Valley Invasive Species Removal Project
Southwest Region, October 1, 2006
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AESO and AGFD applied for a grant to remove invasive species from several stock tanks and renovate these tanks in the San Rafael Valley in Southeastern Arizona.  These five tanks are located on Forest Service and private land and are habitat for the endangered Sonora Tiger Salamander and the threatened Chiricahua Leopard Frog.  They are known to also contain non-native, invasive bullfrogs, crayfish, and fish.  This project was coordinated and accomplished with the help of the Forest Service (Sierra Vista Ranger District), Arizona State Parks, Arizona Game and Fish Department, and the landowner, Ross Humphreys.  Prior to the onsest of the 2006 monsoon season, tanks were treated with a piscicide to remove any non-native fish.  Bullfrogs and tadpoles were removed with various mechanical methods, including seining and gigging.  After the monsoons arrived in the area, subsequent visits were made to monitor bullfrog movement back into these tanks from other nearby locations.  All bullfrogs observed were also removed using the same methods described above.

Contact Info: Martin Valdez, 505-248-6599, martin_valdez@fws.gov
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