Year | Accomplishment |
1991 |
Identified study areas, brood stocks, facilities to be used. Begin preliminary baseline data collection on treatment and control streams, target stock history, genetic sampling. |
1992 |
Initiated parr and smolt releases for treatment streams. Used existing hatchery brood stocks for first generation supplementation. Began monitoring of treatment and control streams. |
1996 |
Completed small scale investigation to monitor behavioral interactions between natural and hatchery fish. Small scale investigation into chinook salmon supplementation strategies and techniques: 1992 -1994. Technical Reports. Peery, C.A. and T.C. Bjornn. |
1997 |
First generation returns, a known brood stock for supplementation is established. Brood stock selection begins with local stocks of known origin. |
Objective | Task | Duration in FYs | Estimated 2001 cost | Subcontractor |
1. Monitor and evaluate the effects of supplementation on parr, presmolt and smolt numbers and spawning escapements of naturally produced salmon. |
Coordination and planning. |
8 |
$4,994 |
|
2. Monitor and evaluate changes in natural productivity and genetic composition of target and adjacent populations following supplementation. |
Coordination and planning. |
8 |
$4,994 |
|
3. Determine which supplementation strategies (broodstock and release stage) provide the quickest and highest response in natural production without adverse effects on productivity. (Long Term) |
Coordination and planning |
8 |
$4,994 |
|
4. Determine which supplementation strategies (brood stock and release stage) provide the quickest and highest response in natural production without adverse effects on productivity. (Long term) |
Coordination and planning |
8 |
$4,994 |
|
Objective | Task | Duration in FYs | Estimated 2001 cost | Subcontractor |
1. Monitor and evaluate the effects of supplementation on parr, presmolt and smolt numbers and spawning escapements of naturally produced salmon. |
a. Differentially mark all hatchery supplementation and general production fish released in or nearby study streams. Assist IDFG. |
8 |
$2,575 |
|
|
b. PIT tag a minimum of 700 hatchery supplementation and general production fish released in or nearby study streams. |
8 |
$20,258 |
|
|
c. Release various life stages of chinook salmon. Determine fish numbers for each life stage based on existing natural production and natural rearing capacity. |
8 |
$5,127 |
|
|
d. Estimate summer parr densities from snorkeling surveys. |
8 |
$23,375 |
|
|
e. Pit tag a minimum of 700 naturally produced parr from each treatment and control stream to estimate smolt production and survival. |
8 |
$20,258 |
|
|
f. Use existing screw traps to collect, mark (PIT tag), and enumerate emigrating fish. Partially covered under 1.b and 1.e. |
8 |
$42,220 |
|
|
g. Compare natural production of supplemented populations to unsupplemented populations and baseline data. |
8 |
$3,574 |
|
2. Monitor and evaluate changes in natural productivity and genetic composition of target and adjacent populations following supplementation. |
a. Monitor productivity and genetic indices from supplemented populations and compare baseline and controls. |
8 |
$4,152 |
|
|
b. Monitor straying of hatchery supplementation fish into adjacent and control streams by weirs and carcass surveys. |
8 |
$5,602 |
|
|
c. Determine spawner to recruitment relationship based on determined production and productivity indices (parr and smolt numbers, adult escapements, survival, eggs/spawner etc.). |
8 |
$5,024 |
|
|
d. Predict population viability based on spawner to recruitment relationship to determine of the population will maintain itself through time in the absence of additional supplementation. |
8 |
$4,090 |
|
3. Determine which supplementation strategies (broodstock and release stage) provide the quickest and highest response in natural production without adverse effects on productivity. (Long Term) |
a. Monitor and evaluate natural production (presmolt, smolt and adult numbers) and productivity (survival, life stage characteristics, pathogens, straying, genetic composition) of supplemented populations and compare to baseline and controls. |
8 |
$19,090 |
Yes |
|
b. Use local broodstocks with known natural component from the target population during the second generation of supplementation. |
8 |
$4,090 |
|
|
c. Compare natural production and productivity indices of supplemented populations using existing hatchery broodstocks (first generation) to populations using locally developed broodstocks (second generation). |
8 |
$4,090 |
|
|
d. Compare natural production and productivity indices among supplemented populations using parr, fall presmolt and smolt release strategies. |
8 |
$4,090 |
|
4. Determine which supplementation strategies (brood stock and release stage) provide the quickest and highest response in natural production without adverse effects on productivity. (Long term) |
a. Guidelines and recommendations will be developed addressing risks and benefits of supplementation (augmentation and restoration) in general and specific supplementation strategies (broodstock and release stage). |
8 |
$9,090 |
|
|
b. Use local brood stocks with known natural component from the target population during the second generation of supplementation. |
8 |
$4,090 |
|
This information was not provided on the original proposals, but was generated during the review process.