Field Notes
U.S. Fish & Wildlife Service
Field Notes Entry   
San Bernardino NWR Staff and Volunteers Complete annual Habitat Conservation Plan Monitoring on Private Lands
Southwest Region, October 21, 2013
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In October, the annual HCP Monitoring took place on El Coronado Ranch. The monitoring, typically done in early October, was delayed until the 21st due to the Government Shutdown that began on October 1st and ended on the 16th. This monitoring was conducted entirely by refuge staff and volunteers. Trammel nets, a gill net, mini-hoop nets (mini pomars), and minnow traps set up in trout line fashion, were placed in Big Tank for the catfish surveys; minnow traps were placed into the other monitored tanks to survey the “little fish” (since 2008, only Yaqui chub have been captured), and the three standard survey sites in West Turkey Creek were electro-fished.


There were a total of six trammel nets, four 20-m trammel nets, two 50-m trammel nets, one 20-m gill net, 20 baited mini-hoop nets, and 16 baited minnow traps were fished for approximately 42.5 hours each on a continuous period from 3:30 pm, October 21 to 10:00 am, October 23. All traps and nets were checked at 9 am and 1 pm on the 22nd, and were pulled at 9 am on the 23rd. Five catfish were captured over the course of the survey. Four of the five were identified using their PIT tags as fish from the original stocking effort in 2000; the fifth fish were first captured and tagged in 2005. All non-native fish captured, 15 black crappie and 5 green sunfish, were removed from Big Tank.

In addition to the four standard monitoring tanks typically surveyed for chub, two additional tanks were surveyed. The additional tanks were surveyed for simple presence/absence sampling. Yaqui chub were present in adequate numbers in four of the six tanks. Fish from one of the ponds with higher numbers were used to stock the tanks with a low number of captures.

Contact Info: Christopher Lohrengel, 520-364-2104 x.106, chris_lohrengel@fws.gov
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