CA Spotted Owl IT follow up questions

CA Spotted Owl IT follow up questions by Kim_Ingram, at 1:05 p.m. on 27 August 2012,

The following questions have been submitted by Steve Brink in response to the Owl IT meeting on 8/23/2012:

Q1: Looking again at the Lambda graph, it’s interesting that the downward slope of the line is nearly constant. I should have thought about the 2001 Star Fire when Pat Ferrell, Eldorado NF Contracting Officer, asked a question about it. The Star Fire burned 16,900 acres in Aug-Sept. 2001, about 2,400 acres of which were on the Georgetown Ranger District. Following the fire, the USFS concluded that the two HRCAS, in which PAC055 and PAC075 were located, were essentially destroyed and recommended deleting both PACs from the Forest plan. Further, about 70% of the total acres burned in the Fire were of high severity. So, how is it that the Star Fire had absolutely no affect on the owls ?

Q2: Because soil site classification could be used as a surrogate for the overall “primary productivity” of a forest, will the samples for the control and “treatment” areas be stratified? The premise being that owls in highly productive forests will perform better under both the control and “treatment” conditions, and likewise owls on less productive forests will underperform under control or treatment scenarios.

Q3: It’s still unclear to me why the Team is not opportunistic and looking to tease out why Owls had very high reproductive success in 1992. Using the 1993 data, and not using 1992, doesn’t seem intuitive given Rocky’s premise that CSO’s live a long time and have an evolutionary strategy that is opportunistic for reproduction. How can that be justified?

Q4: Given how robust the IPM is, why wouldn’t Doug include ALL of the owl data that the Team has including: 1) The discrepancies related to the 8 birds that were counted in the occupancy but not as part of the population and likewise the other 4 birds that resisted capture? 2) The 1992 reproduction data since it is congruent with Rocky’s premise that the evolutionary strategy of the owl is to be long lived and be opportunistic for reproduction? 3) Running a comparison with and without the 1992 data?

Steve Brink California Forestry Association

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