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Monitoring Estuarine Survival of Steelhead Monitoring Estuarine Survival of Steelhead ((Oncorhynchus mykissOncorhynchus mykiss) Smolts in the Nehalem and ) Smolts in the Nehalem and Alsea Basins, Oregon Using Acoustic TelemetryAlsea Basins, Oregon Using Acoustic Telemetry
Jeremy Romer, Camille Leblanc, Carl Schreck, David Noakes, Shaun Clements Jeremy Romer, Camille Leblanc, Carl Schreck, David Noakes, Shaun Clements
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Goal:
•Physiology- Assess degree of smoltification throughout run.
•Behavior- Assess differences between early and late run groups, between basins, or between years.
•Survival- Provide estimates of lower river and estuarine survival.
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#
Nehalem River
North Fork
Wheeler
Manzanita
PacificOcean
Hatchery
Nehalem Bay andSurrounding Area
Oregon
#
#
# TrapLast count
Life Cycle Monitoring: Spatial Resolution
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#
Nehalem Bay andSurrounding Area
Oregon
# TrapLast count
Life Cycle Monitoring: Spatial Resolution
33 Km
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steelhead 2009
Acoustic Technology
7 mm x 18 mm, 0.7 g in water
V7V9
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Two (7" x 15", 16 lb) Floats
Sonic Receiver
1/2" Poly Crabline
3/8" Galvanized Chain (12')
Kedge Anchor - 40 lbs Lead Weight (4 ounce)
steelhead 2001
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Pacific Ocean
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Alsea Study Area
OHRC
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Nehalem Study AreaNehalem Study Area
LCM
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07
0907
09
07 09
Waldport
0
10
20
30
Upper Mid Lower
% u
ndet
ecte
d
40
Alsea Study – Possible Mortality2007, 2009
steelhead 2007,2009
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95 (4)
82 (8)
100
100
= Predator Congregation = Receiver Efficiency
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Alsea River Mouth
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09
01
0209
01
02
09
01
02
steelhead 2001,2002,2009
0 2
N km
Nehalem Study – Possible Mortality2001, 2002, 2009
0
10
20
30
Upper Mid Lower
% u
ndet
ecte
d
40
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93 (4)
88 (6)
100
100
= Predator Congregation = Receiver Efficiency
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9/31 29% detected
25/39 42% detected
Alsea - Effect of run timing on survival
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21/34 62% detected
Nehalem - Effect of run timing on survival
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Early Peak
ExpGroup
0
10
20
30
40
Days
Early Peak
ExpGroup
0
10
20
30
40
Days
Alsea River (55 Km)
Effect of run timing on time to reach the lower estuary
N=9 N=25
Nehalem River (33 Km)
N=15 N=21
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Alsea Nehalem
River
0
2
4
6
8
Da
ys
Alsea Days Mean: 1.1 Median: 0.8 Max: 6.3 Total N: 38.0 Std Dev: 1.3
Nehalem Days 1.1 0.7 7.9 34.0 1.5
Estuary Residence Time
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Alsea River Mouth
70 tagged
62 Estuary Entry - 42 Km – 88.6%
22-38
Pacific Ocean
Ocean - 55 Km – 31-54%
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South JettyPacific Ocean
Nehalem River Mouth
69 tagged
53 Estuary Entry - 20 Km - 76.8%
22-34 Ocean - 33 Km – 32-49%
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Nehalem (n=38)
Columbia (n=64)
Dis
tan
ce T
rave
lled
(K
m)
> 41 Days0 100 200 300
Travel time to Estuary (h)
0
40
80
120
160
200
steelhead 2001
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Migration through the Columbia Estuary
12:00 0:00 12:00 0:00 12:00
steelhead 2001
Tid
al Stag
e (m)
Riv
er K
m
0
1
2
350
-10
0
10
20
30
40
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Spring Chinook
r2 = 0.52
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
75 175 275 375 475
Mean Daily Flow (kcfs)
Mea
n R
ate
(kp
h)
Steelhead
r2 = 0.47
Fall Chinook
r2 = 0.46
Migration Rates to EstuaryRelation to Flow
**
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ANDREW WALCH – because he is a better field tech than the one you have.
ODFWKim Jones – Gear, opportunity, motivationSteve Johnson – Alsea smolt trap setup, receiver tech support, data, adviceBrian Riggers – BoatKara Anlauf - GISCharlie Stein – Access queries, ocean fishingDave Stewart – Redwood housing NehalemKanani Bowden – ScalesLisa Borgerson – ScalesBill Ratliff – Landowner contacts Ryan Couture – OHRC, coordination Joseph O’Neil – OHRC, maker of thingsEric Suring – LCM Project LeaderChris Lorion – Smolt trapping AlseaDerek Wiley – Smolt trapping NehalemPaul Olmsted – Smolt trap NehalemAaron Paloni – Smolt trap NehalemJitesh Pattni - Smolt trap NehalemRichard Biederbeck – Technical support
OSUJayde Ferguson – ATP, ParasitesMichael Glynn – ATP assayAllison Evans – Psychotherapy & statsSchreck Lab – for the love of fish
EPA Jim Powers – VR2 receivers
LandownersPaul McCracken- NehalemPat & Bunny Wright – AlseaRichard & Kathy Ellis – Alsea
ODFW District Fish BiologistsBob Buckman – AlseaChris Knutsen – Nehalem
NOAAPete Baki –Permitting
Old Man Ocean – for letting us have all of our gear back.
ACKNOWLEDGEMENTSACKNOWLEDGEMENTS
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