genetic stock composition of the commercial harvest of ......southeastern district mainland . note:...
TRANSCRIPT
![Page 1: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/1.jpg)
Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in the Southeastern District Mainland, Alaska
Peninsula Management Area, 2010-2012
Tyler H. Dann, Mark J. Witteveen, Serena D. Rogers Olive, Christopher Habicht, Matthew B. Foster, Heather
L. Liller, and William D. Templin RC 7, Tab X 1
![Page 2: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/2.jpg)
Background • SEDM during WASSIP years (2006-2008)
– Small Chignik runs -> Fishery closures -> limited opportunities for genetic stock composition estimates
• Precipitated continuation of fishery sampling – 2010 Area M Board of Fisheries meeting – Paired commercial and test fishery sampling in case of
similar fishery closures • Experimental design:
– 3 sections of SEDM – 3 temporal strata – 3 years: 2010-2012 – Sample both test and commercial fisheries
2
![Page 3: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/3.jpg)
Background • SEDM during WASSIP years (2006-2008)
– Small Chignik runs -> Fishery closures -> limited opportunities for genetic stock composition estimates
• Precipitated continuation of fishery sampling – 2010 Area M Board of Fisheries meeting – Paired commercial and test fishery sampling in case of
similar fishery closures • Experimental design:
– 3 sections of SEDM – 3 temporal strata – 3 years: 2010-2012 – Sample both test and commercial fisheries
2
![Page 4: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/4.jpg)
Background • SEDM during WASSIP years (2006-2008)
– Small Chignik runs -> Fishery closures -> limited opportunities for genetic stock composition estimates
• Precipitated continuation of fishery sampling – 2010 Area M Board of Fisheries meeting – Paired commercial and test fishery sampling in case of
similar fishery closures • Experimental design:
– 3 sections of SEDM – 3 temporal strata – 3 years: 2010-2012 – Sample both test and commercial fisheries
2
![Page 5: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/5.jpg)
3
![Page 6: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/6.jpg)
4
![Page 7: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/7.jpg)
Management Plan
• Relation to Chignik sockeye salmon abundance – SEDM can open when the harvestable surplus of
Chignik runs are expected to exceed 600,000, the run appears strong as predicted and escapement goals are met (or other scenarios < 600,000)
– Number of harvested fish in SEDM destined for Chignik River should approach as near as possible 7.6% of the CMA harvest
– During June, 80% of SEDM harvests assumed destined for Chignik River (historical tagging study)
– June 26 – July 8 overlap period, fishing restricted – In July, Chignik contribution differs by section
5
![Page 8: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/8.jpg)
Management Plan
• Relation to Chignik sockeye salmon abundance – SEDM can open when the harvestable surplus of
Chignik runs are expected to exceed 600,000, the run appears strong as predicted and escapement goals are met (or other scenarios < 600,000)
– Number of harvested fish in SEDM destined for Chignik River should approach as near as possible 7.6% of the CMA harvest
– During June, 80% of SEDM harvests assumed destined for Chignik River (historical tagging study)
– June 26 – July 8 overlap period, fishing restricted – In July, Chignik contribution differs by section
5
![Page 9: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/9.jpg)
Management Plan
• Relation to Chignik sockeye salmon abundance – SEDM can open when the harvestable surplus of
Chignik runs are expected to exceed 600,000, the run appears strong as predicted and escapement goals are met (or other scenarios < 600,000)
– Number of harvested fish in SEDM destined for Chignik River should approach as near as possible 7.6% of the CMA harvest
– During June, 80% of SEDM harvests assumed destined for Chignik River (historical tagging study)
– June 26 – July 8 overlap period, fishing restricted – In July, Chignik contribution differs by section
5
![Page 10: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/10.jpg)
Management Plan
• Relation to Chignik sockeye salmon abundance – SEDM can open when the harvestable surplus of
Chignik runs are expected to exceed 600,000, the run appears strong as predicted and escapement goals are met (or other scenarios < 600,000)
– Number of harvested fish in SEDM destined for Chignik River should approach as near as possible 7.6% of the CMA harvest
– During June, 80% of SEDM harvests assumed destined for Chignik River (historical tagging study)
– June 26 – July 8 overlap period, fishing restricted – In July, Chignik contribution differs by section
5
![Page 11: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/11.jpg)
Management Plan
• Relation to Chignik sockeye salmon abundance – SEDM can open when the harvestable surplus of
Chignik runs are expected to exceed 600,000, the run appears strong as predicted and escapement goals are met (or other scenarios < 600,000)
– Number of harvested fish in SEDM destined for Chignik River should approach as near as possible 7.6% of the CMA harvest
– During June, 80% of SEDM harvests assumed destined for Chignik River (historical tagging study)
– June 26 – July 8 overlap period, fishing restricted – In July, Chignik contribution differs by section
5
![Page 12: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/12.jpg)
Management Plan
• Relation to Chignik sockeye salmon abundance – SEDM can open when the harvestable surplus of
Chignik runs are expected to exceed 600,000, the run appears strong as predicted and escapement goals are met (or other scenarios < 600,000)
– Number of harvested fish in SEDM destined for Chignik River should approach as near as possible 7.6% of the CMA harvest
– During June, 80% of SEDM harvests assumed destined for Chignik River (historical tagging study)
– June 26 – July 8 overlap period, fishing restricted – In July, Chignik contribution differs by section
5
![Page 13: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/13.jpg)
East Stepovak and Stepovak Flats sections
6
![Page 14: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/14.jpg)
East Stepovak and Stepovak Flats sections
6
Perc
ent o
f cat
ch
020
4060
8010
0
Regulatory allocation
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
![Page 15: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/15.jpg)
Northwest Stepovak Section – June
7
Perc
ent o
f cat
ch
020
4060
8010
0
Regulatory allocation
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
![Page 16: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/16.jpg)
Northwest Stepovak Section – July
8
Perc
ent o
f cat
ch
020
4060
8010
0
Regulatory allocation
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
![Page 17: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/17.jpg)
Southwest Stepovak, Balboa Bay and Beaver Bay sections
9
Perc
ent o
f cat
ch
020
4060
8010
0
Regulatory allocation
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
![Page 18: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/18.jpg)
East Stepovak and Stepovak Flats sections
10
Perc
ent o
f cat
ch0
2550
7510
00
2550
7510
00
2550
7510
0
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 19: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/19.jpg)
East Stepovak and Stepovak Flats sections
10
Perc
ent o
f cat
ch0
2550
7510
02010June 1-25
025
5075
100
025
5075
100
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 20: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/20.jpg)
East Stepovak and Stepovak Flats sections
10
Perc
ent o
f cat
ch0
2550
7510
02010June 1-25July 9-25
025
5075
100
2011June 1-25June 26-July 8July 9-25
025
5075
100
2012June 1-25June 26-July 8July 9-25
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 21: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/21.jpg)
Num
ber o
f fis
h ha
rves
ted
(thou
sand
s)0
1020
3040
2010June 1-25July 9-25
010
2030
40
2011June 1-25June 26-July 8July 9-25
010
2030
40
2012June 1-25June 26-July 8July 9-25
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
11
East Stepovak and Stepovak Flats sections
![Page 22: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/22.jpg)
Northwest Stepovak Section
12
Perc
ent o
f cat
ch0
2550
7510
02010June 1-25
025
5075
100
2011June 1-25June 26-July 8
025
5075
100
2012June 1-25June 26-July 8
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 23: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/23.jpg)
Num
ber o
f fis
h ha
rves
ted
(thou
sand
s)0
510
1520
252010June 1-25
05
1015
2025
2011June 1-25June 26-July 8
05
1015
2025
2012June 1-25June 26-July 8
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
Northwest Stepovak Section
13
![Page 24: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/24.jpg)
Southwest Stepovak, Balboa Bay and Beaver Bay sections
14
Perc
ent o
f cat
ch0
2550
7510
02010June 1-25July 9-25
025
5075
100
2011June 1-25June 26-July 8July 9-25
025
5075
100
2012June 1-25June 26-July 8July 9-25
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 25: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/25.jpg)
Num
ber o
f fis
h ha
rves
ted
(thou
sand
s)0
1020
302010June 1-25July 9-25
010
2030
2011June 1-25June 26-July 8July 9-25
010
2030
2012June 1-25June 26-July 8July 9-25
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
Southwest Stepovak, Balboa Bay and Beaver Bay sections
15
![Page 26: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/26.jpg)
Southeastern District Mainland
16 Note: experimental design did not mirror management plan.
Perc
ent o
f SED
M h
arve
st0
2550
7510
0201020112012
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 27: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/27.jpg)
Southeastern District Mainland
16 Note: experimental design did not mirror management plan.
Perc
ent o
f SED
M h
arve
st0
2550
7510
0201020112012
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
![Page 28: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/28.jpg)
Num
ber o
f fis
h ha
rves
ted
(thou
sand
s)0
3570
105
140
201020112012
NortonSound
KuskokwimBay
BristolBay
NorthPeninsula
SouthPeninsula
Chignik East ofWASSIP
Orzinski Non-OrzinskiSouth Peninsula
BlackLake
ChignikLake
Regional Reporting Group Subregional Reporting Group
Southeastern District Mainland
Southeastern District Mainland
17 Note: experimental design did not mirror management plan.
![Page 29: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/29.jpg)
All results publically available
Collaborative project funded by the State of Alaska and Aleutians East Borough.
http://www.adfg.alaska.gov/sf/publications/
Google: SEDM genetic stock composition
18
![Page 30: Genetic Stock Composition of the Commercial Harvest of ......Southeastern District Mainland . Note: experimental design did not mirror management plan. 16 . Percent of SEDM harvest](https://reader033.vdocuments.mx/reader033/viewer/2022042418/5f342f248e2e122689539865/html5/thumbnails/30.jpg)
Questions
19