![Page 1: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/1.jpg)
byMarc S. Novick1,
Robert E. Gresswell2, and Sherri Johnson3
1OSU, Department of Fisheries & Wildlife, 2USGS-NRMSC, and 3USFS-PNL
Factors Influencing the Distribution of Coastal Cutthroat Trout in a
Cascade Mountain Stream
byMarc S. Novick1,
Robert E. Gresswell2, and Sherri Johnson3
1OSU, Department of Fisheries & Wildlife, 2USGS-NRMSC, and 3USFS-PNL
Factors Influencing the Distribution of Coastal Cutthroat Trout in a
Cascade Mountain Stream
![Page 2: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/2.jpg)
Study Background
• Small streams represent majority of stream length in forested areas
• Need to identify habitat
• Dynamic, heterogeneous environments
![Page 3: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/3.jpg)
Study Background
• Look at temporal stability of spatial patterns (Gresswell et al. 2005 In press)
• Spatial scale of variation in fish abundance is uncertain requires multi-scale approach (unit, micro=common)
• Bottom-up vs. top-down approach
![Page 4: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/4.jpg)
0 2,100 4,2001,050 Meters
±
Located in the Umpqua River Basin
OREGON
Roseburg
N
![Page 5: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/5.jpg)
Research QuestionsResearch Questions1) Do relative abundance patterns of coastal cutthroat trout persist across seasons?
2) How do habitat variables influence relative abundance patterns?
3) What are the effects of seasonal stream discharge on movement and activity levels of coastal cutthroat trout?
![Page 6: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/6.jpg)
Study DesignStudy Design
•Electrofishing census of watershed
• Identification of study sections
• Seasonal habitat surveys
• Stationary and mobile half-duplex PIT-tag technology (13 month, bimonthly)
![Page 7: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/7.jpg)
0 1,000 2,000500 Meters
±
Low
High
Summer 2003 ElectrofishingSouth Fork Hinkle Creek
N
![Page 8: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/8.jpg)
52 3
10
9
761 4
16
11
817
18
15
12
14
19
13
±
±
Sou th Fork Hinkle Creek
Tributary 2 Tr ibutary 3
Abundance
HighLow
0 250 500125 Meters
Monitored Habitat PatchesRange 30-320 m300 m
![Page 9: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/9.jpg)
Monitoring Habitat PatchesMonitoring Habitat Patches
HighHigh
LowLowHighHigh
![Page 10: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/10.jpg)
Fish TaggingFish Tagging
Number Tagged= 320 (study section)Number Tagged= 320 (study section)
Fork Length= 122 mm (100Fork Length= 122 mm (100--190 mm)190 mm)
Tag:BodyTag:Body Weight= 3% (<1Weight= 3% (<1--7%)7%)
![Page 11: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/11.jpg)
Stationary Antenna ResultsStationary Antenna Results•Recording data 91% of the time(average of all antennas 10/13/03 to 10/15/04)
• Antenna Efficiency= 90%(measured w/test tag, not related to stage height)
• Mean Maximum Read Range= 25 cm(single-sided, not related to wattage or stage height)
• Detection Efficiency= 88%(percent fish detected by mobile and stationary antennas)
![Page 12: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/12.jpg)
Research QuestionsResearch Questions
1) Do relative abundance patterns of coastal cutthroat trout persist across seasons?
![Page 13: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/13.jpg)
Survey
Num
ber
of f
ish
0 2 4 6 8 10
0
5
10
15
20
Seasonal Persistence
High abundance
Low abundance
Mainstem
![Page 14: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/14.jpg)
Seasonal Persistence
Survey
Num
ber
of f
ish
0
5
10
15
20
0 2 4 6 8 10
High abundance
Low abundance
Tributaries
![Page 15: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/15.jpg)
Num
ber o
f fis
h/se
ctio
n
Section 4 Section 5 Section 6 Section 7 Section 9 Section 10
0
5
10
15
20
25
30
35
01
23
45
6 01
23
45
6 01
23
45
601
23
45
601
23
45
601
23
45
6
Num
ber o
f fis
h/se
ctio
n
Section 4 Section 5 Section 6 Section 7 Section 9 Section 10
0
5
10
15
20
25
30
35
01
23
45
601
23
45
6 01
23
45
601
23
45
6 01
23
45
601
23
45
601
23
45
601
23
45
601
23
45
601
23
45
601
23
45
601
23
45
6
Individual DynamicsMainstem High
New fish
Previously detected
![Page 16: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/16.jpg)
Individual DynamicsMainstem Low
0
5
10
15
20
25
30
35
Sect. 1 Sect. 2 Sect. 3 Sect. 8 Sect. 11 Sect. 12
0123456 0123456 0123456012345601234560123456
Sect. 16
0123456
Num
ber o
f fis
h/se
ctio
n
0
5
10
15
20
25
30
35
Sect. 1 Sect. 2 Sect. 3 Sect. 8 Sect. 11 Sect. 12
01234560123456 01234560123456 01234560123456012345601234560123456012345601234560123456
Sect. 16
01234560123456
Num
ber o
f fis
h/se
ctio
n
New fish
Previously detected
![Page 17: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/17.jpg)
Research QuestionsResearch Questions
2) How do habitat variables influence relative abundance patterns?
![Page 18: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/18.jpg)
Seasonal Habitat UsePe
rcen
t of
Det
ection
s
Fall Winter Spring Summer0
20
40
60
80
100
120
CascadeRifflePool
Mobile Surveys
![Page 19: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/19.jpg)
Pool Formation
Mainstem Tributaries
Boulder Bedrock LWD Root
67%50%
![Page 20: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/20.jpg)
Significance of Boulders
Number of Boulders
Fish
Abu
ndan
ce
y = 0.1279x + 0.2626R2 = 0.84
05
101520253035
0 100 200 300
![Page 21: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/21.jpg)
Research QuestionsResearch Questions
3) What are the effects of seasonal stream discharge on movement and activity levels of coastal cutthroat trout?
Dave Leer 2003
![Page 22: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/22.jpg)
0
2
4
6
8
10
12
14
16
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Mea
n nu
mbe
r of
fis
h or
Wat
er T
(ºC)
Mea
n st
ream
dis
char
ge (m
3s-
1 )
2003 2004
Seasonal Overview Discharge Water Temp. Fish
![Page 23: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/23.jpg)
Seasonal Stream Discharge
0
10
20
30
40
50
60
70
Mea
n Daily D
isch
arge
(cf
s) 1.2 yr event
Fall Winter Spring Summer
![Page 24: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/24.jpg)
Movement Discharge Relationship
Discharge (m3/s)
Num
ber
of F
ish
Det
ecte
d
Spring
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.40
10
20
30
40
50
y = 0.35^ (-6.26x)
R2 = 0.57
N = 614 detections (68 fish)
![Page 25: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/25.jpg)
Summary •Fish abundance more stable in MS than Tribs
•Movement in proportion to stream discharge, resilient to discharge extremes
•High/low relative abundance patterns persisted in MS, but individuals dynamic
• Fish abundance depends on habitat complexity and temporal stability
![Page 26: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/26.jpg)
Doug BatemanDoug Bateman
Mike HeckMike HeckDave Dave HockmanHockman--WertWert
Aaron BergerAaron BergerDave LeerDave Leer
Vince Vince TranquilliTranquilliWarren LeechWarren Leech
Doug BatemanDoug Bateman
Mike HeckMike HeckDave Dave HockmanHockman--WertWert
Dave LeerDave Leer
Vince Vince TranquilliTranquilliWarren LeechWarren Leech
Aaron BergerAaron Berger
Nicolas Nicolas ZegreZegreNicolas Nicolas ZegreZegre
AcknowledgementsAcknowledgements
Watershed Research CooperativeWatershed Research Cooperative
![Page 27: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/27.jpg)
Questions ?Questions ?
![Page 28: Factors Influencing the Distribution of Coastal Cutthroat ... · Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream by Marc S. Novick1, Robert](https://reader034.vdocuments.us/reader034/viewer/2022042402/5f134dd7fa09df5ba160c068/html5/thumbnails/28.jpg)
Bank Full Event
Distance (m)
Perc
ent
of F
ish
0
5
10
15
20
25
30
35
40
0 10 20 30 40 50 60 70 80 90 100
110
410
Upstream DownstreamNo Movement
N= 59 fish