Stream Studies of Hatchery-Wild

Pink and Chum Salmon Interactions in

PWS and SE, Alaska, 2015

Kristen Gorman, Ben Adams, Julia McMahon and Eric Knudsen

Prince William & Sitka Sound Science Centers

1

2015 Field Campaign PWS

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

uDouble Creek

uConstantine Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

32 study streams throughout PWS.

2

6 pedigree fitness streams for pinks. Sampled every 1-3 days.

2015 Field Campaign PWS

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

3

28 pink straying streams.

Includes 12 streams for stock structure study.

2015 Field Campaign PWS

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

4

18 Chum straying streams, 17 in fraction analysis.

2015 Field Campaign PWS

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

5

6 field crews operating in PWS.

2015 Field Campaign PWS

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

uDouble Creek

uConstantine Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying 6

PWS Vessel-Based Crews 2015:

Cathy G July 18 –

September 26, 2015

3 port calls

Focus: stray streams

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

7

Photo Credit: D. Janka

Photo Credit: A. Chastan

August 1 –

September 19, 2015

1 port call

Focus: pedigree streams Early/Late: Every 3 days

Mid: Every 2 day sampling

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

PWS Vessel-Based Crews 2015:

Auklet

8

August 21 – 30, 2015

Focus: pedigree stream

Every day sampling

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

PWS Vessel-Based Crews 2015:

AukletPhoto Credit: T. D’Aoust

9

PWS Camping Crew 2015:

Paddy Bay

uHartney Creek

Spring Creek

¢Sheep River

uBeartrap Creek

¢Fish Creek

¢Lagoon Creek

¢Short Creek

uSunny River

uLong Creek

nVanishing Creek uSpring Creek

nWells River

¢Surplus Creek

uSiwash Creek

uCoghill River

nMill Creek

¢Hummer Creek

nBlackstone/Tebenkof Creeks

uPaulson Creek

uWest Finger Creek

¢Comstock Creek

Paddy Creek

Erb Creek

Hogan Bay Creek

¢Bainbridge Creek

¢Johnson Creek

uSwamp Creek

uCabin Creek

Gilmour Creek

Stockdale Creek

Stream Type

pink fitness

¢pink straying only

nchum straying only

upink and chum straying

uDouble Creek

uConstantine Creek

August 1 – September 26,

2015

Resupply via Cathy G

Focus: pedigree streams

Photo Credit: J. McMahon

10

TAMU Crew

Alice Cove base camp

July 10 – August 21, 2015

Focus:

Spring Creek (pedigree) only

Daily sampling

CDV Crew

Mid-July – September 20,

2014

Focus: Hartney Creek,

Double Creek, Sheep River,

Humpback and Windy

Creeks (Wei), Spring Creek

(pedigree) late season, 2

trips to Coghill River

Additional Field Crews 2015:

Texas A&M, Cordova-based

11

Field Collections: Otoliths and Genetic Samples

Photo Credit: D. Janka12

Field Collections: Otoliths and Genetic Samples

13

2015 PWS Sample Summary

Total Pink Chum Pink-Wei (Windy,

Humpback, & Snug)

Otoliths 78,098 70,815 6,492 791

DNA-Pedigree

58,809 58,809 - -

Stream Visits 311 - - -

Sampling Goal

28/28 streams >384

12/17 streams >384

-Chum sampling goals:

Blackstone Creek (13.3% of the sampling goal), Coghill River

(60.9%), Paulsen (37.2%), Siwash (32.8%), Spring (44.3%), and

Swamp (52.1%) Creeks.

-Excellent field crews and charter vessel operators!

-Great conditions for sampling in 2015, but low water in streams. 14

Photo Credit: S. Den Adel

15

Photo Credit: S. Den Adel

16

PWS Hatchery Fraction Results 2015:

Pink Salmon Streams, Districts, RegionPhoto Credit: K. Ruck

17

2015 - PWS PinkBy: Stream

0.17

Bainbridge

0.01

Beartrap

0.11

Cabin

0.81

Comstock

0.23

Erb

0.58

HoganBay

0.21

Hummer

0.39

Johnson

0.05

Lagoon

0.16

Long

0.33

Paddy

0.002

Sheep

0.04

Short

0.32

Siwash

0.01

SpringPedigree

0.04

Spring

0.24

Stockdale

0.17

Surplus

0.02

Sunny

0.13

Swamp

0.05

WestFinger

0.00

Coghill

0.03

Fish

0.01

Hartney

0.01

Double

0.00

Constantine

0.21

Paulsen

18

228

227226

225

224

223

222 221

2015 - PWS PinkBy: District

0.00

Coghill

0.16

Northwestern

0.81

Eshamy

0.34

Southwestern

0.16

Montague

0.01

Southeastern

0.17

Northern

0.02

Eastern

19

228

227226

225

224

223

222 221

2015 - PWS PinkOverall

0.10

Total PWS

20

PWS Hatchery Fraction Results 2015:

Chum Salmon Streams, Districts, RegionPhoto Credit: A. Patterson

21

2015 - PWS Chum By: Stream

0.01

Beartrap

0.90

Cabin

0.06

Blackstone

0.08

Long

0.33

Siwash

0.01

Spring

0.04

Wells

0.04

WestFinger

0.01

Coghill

0.02

Hartney

0.03

Double

0.04

Constantine0.04

Paulsen

0.01

Mill

0.003

Sunny0.03

Vanishing

0.79

Swamp

22

228

227226

225

224

223

222 221

2015 - PWS ChumBy: District

0.01

Coghill

0.04

Northwestern

0.85

Montague0.03

Southeastern

0.10

Northern

0.01

Eastern

23

228

227

226225

224

223

222 221

2015 - PWS Chum Overall

0.03

Total PWS

24

2015 Field Campaign SEAK

25

• Sampled July 22 – Sept 2, 2015

• No pedigree sampling

• Otolith crews

– 3 vessel crews

– 2 land-based crews

• Streams sampled 2-4 times.

Photo Credit: D. Rhea-Fournier

2015 Field Campaign SEAK

26

2015 SEAK Sample Summary

TotalChum

Otoliths 10,651

DNA-Pedigree NA

Stream Visits 116

Sampling Goal 16/32 streams >384

27

SEAK Hatchery Fraction Results 2015:

Chum Salmon Streams, Districts, RegionPhoto Credit: B. Ferguson

28

2013 – SEAK Chum By: Stream

0.50

Prospect

0.40

Glen

0.13

Harding

0.02

King

0.02

Carroll

0.05

Hidden0.03

Marten0.16

Saginaw

0.02

Petrof

0.01

King Salmon

0.38

Sawmill

0.87

Fish

0.10

Admiralty

0.01

Swan Cove

0.09

Chuck

0.04

North Arm

0.05

Greens0.01

Game

0.03

Freshwater

0.00

Little Goose

0.003

Seal Bay

0.20

Kadashan

0.03

Ford

0.03

Sister Lake

0.004

Ushk

0.01

Rodman

0.002

Ralphs

0.01

W Crawfish

0.02

Chaik

0.09

Whitewater

0.01

Johnston

0.04

E of Snug

29

2015 – SEAK Chum By: Subregion

0.02

NSEO

0.13

NSEI

0.05

SSE

30

NSI

NSO

SSI

2015 – SEAK Chum Overall

0.09

Total SEAK

31

Overall Stream Hatchery Fractions 2013-2015

0.00

0.05

0.10

0.15

0.20

2013 2014 2015

Year

Weig

hte

d H

atc

he

ry F

ractio

n

Year

2013

2014

2015

PWS Pink Salmon

0.00

0.05

0.10

0.15

0.20

2013 2014 2015

Year

We

igh

ted H

atc

he

ry F

ractio

n

Year

2013

2014

2015

PWS Chum Salmon

0.00

0.05

0.10

0.15

0.20

2013 2014 2015

Year

We

ighte

d H

atc

hery

Fra

ctio

n

Year

2013

2014

2015

SEAK Chum Salmon

32