Difference between revisions of "GCDAMP 2016 Fish PEP"
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== Fish projects in the [[GCDAMP Budget| '''FY15-17 TWP''']]: <br> == | == Fish projects in the [[GCDAMP Budget| '''FY15-17 TWP''']]: <br> == | ||
− | + | *Project 6. Mainstem Colorado River Humpback Chub Aggregations and Fish Community Dynamics (system-wide monitoring potentially harmful/invasive nonnative species and other rare native species) <br> | |
− | + | *Project 7. Population Ecology of Humpback Chub in and around the Little Colorado River <br> | |
− | + | *Project 8. Experimental Actions to Increase Abundance and Distribution of Native Fishes in Grand Canyon <br> | |
− | + | *Project 9. Understanding the Factors Determining Recruitment, Population Size, Growth, and Movement of Rainbow Trout in Glen and Marble Canyons (Natal Origins) <br> | |
− | + | *Project 10. Where does the Glen Canyon Dam rainbow trout tailwater fishery end? - Integrating Fish and Channel Mapping Data below Glen Canyon Dam <br> | |
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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;"> Questions </h2> |
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− | + | How could the program better balance priorities and trade‐offs focused on research and monitoring of – | |
− | + | #Rainbow trout in Glen and Marble Canyons? | |
− | + | #Humpback chub around the LCR confluence, and at other locations that may harbor secondary populations? | |
− | + | #Effectiveness of translocation efforts for of humpback chub? | |
− | + | #Native and Nonnative fish status and trends outside of fixed study locations? | |
− | + | #Better accommodating concerns for protecting the value of all life forms in culturally sensitive areas while maintaining the quality science? | |
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− | + | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;"> Findings and Recommendations </h2> | |
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− | + | ===Rainbow trout monitoring=== | |
+ | *“The quality of catch effort data…is likely reduced due to the inability to account for incomplete capture.” | ||
+ | *“To maintain a quality fishery it is necessary to understand the factors affecting vital rates, currently these estimates are only provided through the intensive research sampling efforts.” | ||
+ | *CPE monitoring is “providing a robust view of status and trends of exotic species” over large areas, and intensive methods have limited spatial extent. | ||
+ | *Maintain the integrity of the long–term CPUE monitoring data | ||
+ | *Build on this long-term monitoring effort to estimate the annual response of RBT to conditions. | ||
+ | *Try fitting open models to RBT tagged during CPUE monitoring. | ||
+ | *Evaluate tradeoffs of different monitoring schemes via simulation. | ||
− | + | ===Understanding drivers=== | |
− | + | *“Incorporate all levels of ecosystem (e.g., nutrients, benthic invertebrates, temperature, Lake Powell)” to better understand factors affecting RBT population dynamics. | |
+ | *Develop RBT conceptual model to facilitate communication within and outside the program. | ||
+ | ===Humpback chub=== | ||
+ | *Quantify impacts of RBT on HBC. | ||
+ | *Focus on drivers of vital rates more, abundance less. | ||
+ | *Improve efficiency of HBC monitoring and research through coordination and power analysis. | ||
+ | *Consider more research into a potential second population. | ||
− | - | + | ===Translocations=== |
+ | Need to clearly define goals | ||
+ | *Providing nursery areas for grow-out? | ||
+ | *Establishing new populations? | ||
+ | *Needs clear set of hypotheses. | ||
+ | *Different stocking methods? | ||
+ | Need for quantitative analysis <br> | ||
+ | Genetic considerations | ||
− | + | ===Evaluating tradeoffs in monitoring efforts=== | |
− | + | *Power analyses / simulations | |
− | * | + | *Can some projects be downsized? |
− | * | + | *Should some projects be discontinued / redesigned? |
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− | -- | + | ===Monitoring Broad-Scale Fish Community Status and Trends=== |
+ | *Current sampling likely effective for trout, carp, walleye and smallmouth bass. Ineffective for catfish, striped bass. | ||
+ | *Stratified random design may be poor design for detecting invasions if likely entry points are not sampled yearly. | ||
+ | *Suggest pit tagging and open models. | ||
+ | *Also suggest incorporating PIT-tag antennae into design. | ||
+ | *“PEP recommends that a separate invasive detection program be considered. This separate program would use a variety of sampling gears deployed at fixed sites where nonnative are known to exist or where introduction is most likely to occur.” | ||
+ | *“Identify nonnative fish population or distribution indices or rules sets that would trigger nonnative fish control options to be employed” | ||
+ | *“Develop ways to routinely solicit information from fishing guides and anglers regarding composition of the recreational fishery.” | ||
− | + | === Minimizing negative effects of program activities on fish=== | |
− | + | *Clearly demonstrate need for particular levels of sampling | |
− | + | *Engage tribes in monitoring and research programs | |
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− | + | ===Program communication and Outreach=== | |
+ | *Need to develop population metrics for characterizing RBT population in Lees Ferry that are understood by and acceptable to angler stakeholders. | ||
+ | *Develop an integrated conceptual model. | ||
+ | *Consider increased citizen science. | ||
− | + | ===Adaptive Management=== | |
+ | PEP recommended we focus on models throughout the adaptive management process (Information-theoretic approach). | ||
+ | *Modify RBT and HBC models to incorporate alternative hypotheses of the factors affecting demography. | ||
+ | *Integrate two population models. | ||
+ | *Recommendations that the translocations be more hypothesis driven with hypotheses linked to specific management actions and criteria for success clearly defined. | ||
− | + | ===Emerging Issues=== | |
− | + | Need to more formally integrate reservoir and downstream ecosystem monitoring. | |
+ | *Effects of warmer water and lower nutrients levels associated with lowered lake levels and potentially decreased inflows identified as key uncertainty. | ||
+ | *Reconsider risk associated with Quagga effects in the reservoir on reservoir outflows (increased water temperature, altered nutrients). | ||
+ | *Invasive species: “focus on prevention” | ||
+ | Shifts in benthic macrophyte community: consider research / modelling on nutrient assimilation and stoichiometry dynamics and differences in secondary production on different vegetation. | ||
+ | *Climate Change – need ecosystem and/or bioenergetics modelling. | ||
+ | *Program should consider TCD as a management option for warming waters – what would effects be on nutrients / temperature and effects for rainbow trout and native species. [https://www.usbr.gov/uc/rm/amp/twg/mtgs/17apr20/Attach_06b.pdf] | ||
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{| width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#f5faff;" | {| width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#f5faff;" | ||
− | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; 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 #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Links</h2> |
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− | *[ | + | *[http://gcdamp.com/index.php?title=PEP_reviews PEP Reviews page] |
− | *[ | + | *[http://gcdamp.com/index.php?title=2009_Fish_Monitoring_Program_PEP 2009 Fish Monitoring Program PEP] |
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− | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; 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 #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;"> Presentations </h2> |
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− | [ | + | *[https://www.usbr.gov/uc/rm/amp/twg/mtgs/17apr20/Attach_06b.pdf Review of Fisheries Program TWG Summary - 2016 PEP Findings PPT] |
− | + | *[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/16aug24/Attach_07a.pdf Grand Canyon Monitoring and Research Center Science Updates (BO Compliance, Trout Updates, Green Sunfish, Fisheries PEP, Partners in Science)] | |
+ | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16oct18/Attach_06.pdf Update on Fisheries PEP] | ||
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+ | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">2016 Fish PEP</h2> | ||
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− | + | *[[Media:Fisheries PEP Report 2016-12-27.pdf| GCDAMP PEP Final Report for the Fisheries Program Review, December 27, 2016]] | |
+ | *[[Media:GCDAMP FY16 Fisheries PEP Prospectus final.pdf| 2016 Fish PEP Prospectus: Stakeholder Final]] | ||
+ | *[[Media:2016 Fish PEP Agenda.docx| 2016 Fish PEP Agenda]] | ||
+ | *[ftp://ftpext.usgs.gov/pub/nonvisible/wr/PEP%202016%20documents/ GCMRC 2016 Fish PEP ftp site] | ||
+ | *[[Core Monitoring Plan| Description of the Scientific Protocol Evaluation Panel (PEP) Review Process]]; Core Monitoring Plan Appendix C: | ||
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! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Reference Material</h2> | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Reference Material</h2> |
Latest revision as of 15:46, 10 July 2018
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Fish projects in the FY15-17 TWP:
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