christina luzier usfws columbia river fisheries program office – vancouver, wa evaluate habitat...
TRANSCRIPT
Christina Luzier USFWS
Columbia River Fisheries Program Office – Vancouver, WA
Evaluate Habitat Use and Population Dynamics of
Lampreys in Cedar Creek
BPA - 200001400
Outline
I. Critical Uncertainties
II. Project History
III. Objectives
IV. Adaptive Changes
V. 2004 Updates
VI. Future of the Project
Critical Uncertainties• Lamprey Status:
Distribution/Abundance• Basic Biology/Ecology• Genetic Structure• Passage• Survival Estimates• Limiting Factors• Restoration Activities• Education and Outreach
Project Overview/History
• BPA Project # 200001400
• 4th year of project operations
• Lewis River Drainage, SW Washington
• Year-around field activity
• Staff: 3 FTE’s, fish biologists
Location Map
r
#S
Cedar Creek, WA.
N
5 km
Objectives1. Abundance and migration timing of adults
2. Larval distribution and habitat use
3. Outmigrant abundance and migration timing
4. Spawning habitat requirements
Objective 1AdultsPacific (PCL)
• Migration timing, biology and behavior, population estimates
Method:• Adult Pot traps and Adult Fish Ladder• Length, weight, sex, spawning condition• PIT tag, fin clip (for 2nd mark and genetics) • Mark-recapture for population estimates
Capturing Adults
Adult Ladder Pot Trap
Objective 1 Results
• Population estimates• 2001 – 87; 2002 – 700; 2003 – 693
• Migration timing: potentially two migration periods early summer/fall
Year # Captured # Recaptured Efficiency %2001 31 11 35
2002 61 5 8
2003 156 43 28
PCL
0
0.05
0.1
0.15
0.2
4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Capture Date
Da
ily P
rop
ort
ion 2001
2002
2003
2001–2003 Adult PCL
Movement
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Capture Date
Cu
mu
lati
ve
Pro
po
rtio
n
2001
2002
2003
2002 Adult PCL Movement
0
2
4
6
8
10
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Nu
mb
er
of
Ca
ptu
res
0
500
1000
1500
2000
Dis
ch
arg
e (
CF
S)
Objective 1
Challenges
– Population Estimation• Location of marking
• Capture method efficiency
• Poor recapture efficiency
• PIT retention rates
• Equal capture of marked v. unmarked
– Escapement• Incomplete coverage of nest counts
Objective 1
Changes
33 38
230
52
60
50
100
150
200
250
Trap Lineat Mouth
Grist MillPots
LadderPots
Ladder ScrewTrap
Pop EstimatesEscapement
Objective 2
• Larval lamprey distribution and habitat use
• Method: Stratified systematic point sampling technique
• Electrofishing
–70% depletion
• Habitat
Transect 1
Transect 6
Transect 5
Transect 4
Transect 3
Transect 2
Water F
lo w
10 m
= Sample Points
Sample Site Diagram
Objective 2 Results
• Fish in relation to their habitat
• Stone and Barndt 2004 (J. Freshwat. Ecol.)
– Highly aggregated, non-random
– Negative relationship with water velocity
– Positive relationship with clay, silt, sand
– Backwater, depositional, side channel areas
Year # Reaches # Fish % Quads w/Fish Avg. Density2001 9 55 12 42002 9 77 32 3
Objective 2Challenges– Low number of successes at sample
points, i.e. lots of zeroes– Concerns about gear efficiency– Catchability concerns in presence areasChanges– Plans to develop sampling design to
address low success rate (adaptive cluster method, etc.)
– Continuation of gear efficiency work including lower densities and probability of capture
Gear Efficiency
Challenges:Ability to get sufficient test fish for trialsSubstrate sterility and validation: time
consumingGear Efficiency Trials Cedar Creek 2004
<60 mm Ammocoetes Only
0
20
40
60
80
100
120
140
0 20 40 60 80Actual
Pre
dic
ted
Depletion model
Regression correction
Perfect world
Gear Efficiency Preliminary Results
Objective 3
• Outmigrant abundance and migration timing
• Method:• 5’ screw trap, 4 km upstream of mouth• Length, weight, stage• Tag and release• Trap efficiency• Trap retention
Objective 3 Results
Year Species Stage Total Captured Efficiency % Retention %2001 PCL Ammocoete 330 11
Macropthalmia 246 21WBL Ammocoete 5
Adult 172002 PCL Ammocoete 240 14 51
Macropthalmia 76 10 64WBL Ammocoete 1
Adult 12003 PCL Ammocoete 518 2 45
Macropthalmia 460 9 74WBL Ammocoete 7
Adult 18
0.00
0.05
0.10
0.15
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Capture Date
Da
ily P
rop
ort
ion
2001
2002
2003
Ammocoete Movement
2001 - 2003
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Capture Date
Cu
mu
lati
ve
Pro
po
rtio
n
2001
2002
2003
2001-2003 Macropthalmia
Movement
0.00
0.05
0.10
0.15
0.20
0.25
0.30
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Capture Date
Da
ily P
rop
ort
ion
2001
2002
2003
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Capture Date
Cu
mu
lati
ve
Pro
po
rtio
n
2001
2002
2003
2003 Am and Mac Movement
0
10
20
30
40
50
60
70
80
90
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Nu
mb
er
of
Ca
ptu
res
0
500
1000
1500
2000
2500
Dis
ch
arg
e (
CF
S)
2003 Am
2003 Mac
Discharge
Objective 3Challenges
–Screwtrap upstream from majority of CDC productivity(172 nests downstream!)
–consistent effort with high flow without compromising safety
Changes–Section 10
permit to move screw trap to mouth of CDC
–Safety–Consistent effort–Improve
migration timing estimates and mark/recapture
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Index 1 Index 2
Index 3
Index 4
Index 5
Index 6
Index 7
Objective 4
• Evaluate spawning habitat requirements of adult lampreys
Method: Spawning ground
surveys throughout Cedar and
Chelatchie Creeks
Pacific Lamprey Nest
Dimensions
Substrate
Habitat type
Flow
#/sex
Eggs present
Nest longevity
Objective 4 Results
• PCL Nests2001 - 20; 2002 – 124; 2003 – 109
• Habitat types: Pool tail outs, runs, low gradient riffles with large gravel
• Appearance: Round depression, 21-23 in (53-58 cm) in diameter, substrate stacked around perimeter
• Flow: 2-3 ft/sec
Objective 4 Results
• WBL Nests
2001 – 24; 2002 – 13; 2003 – 22
• Habitat types: Pool tail outs, low gradient runs with small gravel
• Appearance: small gravel, 4-14 in. diameter (cattle hoof print)
• Flow: 1.3 ft/sec
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2002
2003
PCL Nest Construction/Digging
PCL Adult Video
Objective 3
• Challenges– Moving beyond Phase 1: Collection of
descriptive nest data– Phase 2: Development of predictive
model of spawning habitat• Changes
– Improved sampling design for use and non-use data
– Use vs. non-use habitat characteristics
PCL–273 use/108 non-use; WBL–27 use/16 non-use
• Continue with four Objectives• Improving adult abundance estimation• Continuing work on Gear Efficiency and
larval depletion models• Logistical analysis of screw trap move • Predictive modeling of spawning habitat
• Juvenile spatial distribution within substrate• Recruitment in Rosgen side-channels • Population genetics
Current Work
Future Work
http://columbiariver.fws.gov
Acknowledgments
BPA Howard Schaller
CRFPO Jen StoneSam LohrBao Le Greg Silver
WBL Double Feature