Difference between revisions of "2009 Fish Monitoring Program PEP"
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− | 2009 Fish PEP participants | + | ==2009 Fish PEP participants== |
+ | *Mike Bradford (Chair) | ||
+ | *Mark Bevelhimer | ||
+ | *Michael Hansen | ||
+ | *Gordon Mueller | ||
+ | *Doug Osmundason | ||
+ | *Jim Rice | ||
+ | *Dana Winkelman | ||
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− | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;"> | + | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;"> Findings and Recommendations </h2> |
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+ | ===Lee's Ferry Recommendations=== | ||
+ | *Recast the management objectives as sports fishery metrics (catch rate, fish size). | ||
+ | *Retain the creel survey | ||
+ | *Abandon fixed sites and use a fully random design- increase # of random sites | ||
+ | *Consider reducing trips from 3-4 to 1-2. CV can increase fo 15-20% | ||
+ | *Make fuller use of age information | ||
+ | |||
+ | ===Little Colorado Region HBC=== | ||
+ | Compare lower LCR FWS catch data and AZGF lower 1200m sampling to determine if both programs are now needed. | ||
+ | Evaluate the benefits of the second (fall) FWS mark recapture estimate: | ||
+ | *Can juvenile abundance be indexed by the spring series? | ||
+ | *How many (or few) PIT tags are needed to maintain ASMR? | ||
+ | Continue development of the PIT tag antennae | ||
+ | *Full channel width | ||
+ | *2 arrays to evaluate movement | ||
+ | *On-site continuous maintenance needed? | ||
+ | Develop stock assessment framework for LCR humpback chub | ||
+ | *Integrate information from all programs into agreed upon format for annual reporting | ||
+ | ASMR runs at 3-5 year interval | ||
+ | *Can ASMR detect variation in recruitment? | ||
+ | "Minimum handling" as a management objective | ||
+ | *PIT tag loss and tagging and tag-related mortality | ||
+ | *Unknown sub-lethal effects | ||
+ | |||
+ | ===Mainstem Recommendations=== | ||
+ | Consider reducing the mainstem electrofishing survey to an annual trip rather than 2x/yr. | ||
+ | *Current estimates of trout CPUE are precise | ||
+ | *Analysis to determine what loss of information would result | ||
+ | |||
+ | Evaluate undesired non-native species for: | ||
+ | *Risk to native fish (potential for establishment and impact) | ||
+ | *Points of entry | ||
+ | *Preferred habitats or likely sampling locations and gear types Based on #2, develop new sampling protocol for surveying for non-native fish that are not well sampled by the e/f program | ||
+ | *Fixed sites at hotspots | ||
+ | *Multiple gear types | ||
+ | *Opportunistic surveillance | ||
+ | *Non-random "informed" sampling | ||
+ | |||
+ | Clarify objectives and expectations for the mainstem HBC populations to provide direction. | ||
+ | *What frequency of survey is needed for the adult aggregations? | ||
+ | *How many aggregations need to be surveyed? | ||
+ | *What level of spatial and temporal effort is warranted for spawning and recruitment surveys? | ||
+ | |||
+ | ===Institutional Issues=== | ||
+ | *Most programs are beyond the experimental stage and the reporting and analysis of annual updates can be standardized. | ||
+ | *Are there sufficient resources for integration and analysis? | ||
+ | *Organize reporting around objectives rather than agency/trip reports - e.g., integrate non-native catch information across all sampling programs | ||
+ | *The Adaptive Management question: Are the flow experiments and the monitoring program operating at the same scale? | ||
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Latest revision as of 16:54, 20 November 2018
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2009 Fish PEP participants
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