overview of the hatchery program program goals: increase ...€¦ · mortality to mcn mini-jack...
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CATHERINE WILLARD AND ALENE UNDERWOOD, CHELAN COUNTY PUBLIC UTILITY DISTRICT
GREG MACKEY AND TOM KAHLER, DOUGLAS COUNTY PUBLIC UTILITY DISTRICT
PETER GRAF AND TODD N. PEARSONS, GRANT COUNTY PUBLIC UTILITY DISTRICT
UPPER COLUMBIA SCIENCE CONFERENCE 2016
Habitat Conservation Plan
Salmon and Steelhead Settlement Agreement
Rocky Reach, Rock Island, and Wells Habitat
Conservation Plan Hatchery Committees
Priest Rapids Coordinating Committee Hatchery Sub-
Committee
Hatchery Program Goals
Program Goal:
“Support the recovery of ESA-listed species by increasing the
abundance of the natural adult population, while ensuring
appropriate spatial distribution, genetic stock integrity, and adult
spawner productivity.”
Wenatchee and Methow spring Chinook
Wenatchee summer steelhead
Methow summer steelhead
Program Goal:
“Increase the abundance of the natural adult population of unlisted
plan species, while ensuring appropriate spatial distribution, genetic
stock integrity, and adult spawner productivity. In addition, provide
harvest opportunities in years when spawning escapement is
sufficient to support harvest.”
Wenatchee and Methow summer/fall Chinook
Hatchery Program Goals
Program Goal:
“Provide salmon for harvest and increase harvest opportunities, while
segregating returning anadromous natural tributary spawning
populations. “
Chelan Falls summer Chinook
Hatchery Program Goals
Tools
50%
55%
60%
65%
70%
75%
80%
85%
90%
0%
5%
10%
15%
20%
25%
30%
35%
40%
50 70 90 110 130 150 170 190
Fork length?
Mortality to MCN Mini-jack rate Apparent survival
Challenge Straying
From Permit No. 18121, issued by the National Marine Fisheries Service
(NMFS), “Strays should constitute no more than ten percent of the natural
spawning aggregate in Nason, White, or the Little Wenatchee basins and
five percent for populations outside the Wenatchee River basin annually”.
Challenge
Maximizing proportionate of natural influence
(PNI)
From Permit No. 18121, issued by the National Marine Fisheries Service
(NMFS), “Remove hatchery fish from the Wenatchee River to achieve
Proportionate Natural Influence (PNI) following the sliding scale based on
run size identified in the Wenatchee Spring Chinook Management Plans
and the HGMP.”
Challenge
Maximizing proportionate of natural influence
(PNI)
pNOB = mean proportion of a hatchery broodstock composed of
natural-origin adults
pHOS = mean proportion of natural spawners in a watershed or
stream composed of hatchery-origin adults
Tools
Harvest
Adult Management
Monitoring and Evaluation
•In-hatchery indicators•In-nature indicators•Risk assessment indicators