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2005 Report of Assessment and Research Activities
The IPHC Report of Assessment and Research Activities is a
compilation of progress reports relating to staff activities. Some of the information contained here has
changed since printing as new data is gathered and analyzed. For the most
up-to-date information, please contact the author by visiting the staff directory
for e-mail addresses or by phoning the Seattle office at (206) 634-1838.
 | Cover by Forsberg (pdf
200KB) |
| Contents (pp. 1-8, pdf 200KB) |
| Section 1 (pp. 9-34, pdf
302KB)
 | IPHC research program: Review
of 2005 projects and proposals for 2006 |
|
| Section 2 - The Fishery (pp. 35-90, pdf
515KB)
| Removals
 | 2005 Commercial fishery and regulation changes |
| 2005 Sport Fishery |
| Wastage in the 2005 Pacific halibut fishery |
| The personal use harvest of Pacific halibut in
2004 |
| Retention of sublegal halibut in the Areas 4D/4E
CDQ fishery: 2005 harvests |
|
| Sampling and Analysis
| Commercial catch sampling |
| Overview of the IPHC catch sampling strategy |
| Age distribution of the commercial halibut catch
for 2005 |
|
|
| Section 3a - Population Assessment (pp.
91-150, pdf 726KB)
| Effects of gear type, hook spacing, and hook size
on commercial selectivity and catchability |
| Assessment of the Pacific halibut stock at the end
of 2005 |
| Analysis of PIT tag recoveries through 2005 |
| 2005 Harvest policy considerations and five year
yield projections |
| Area 4B population decline - should yield be
lowered? |
|
| Section 3b - Bycatch (pp. 151-178, pdf
341KB)
| Incidental catch and mortality of Pacific halibut,
1962-2005 |
| Pacific halibut discard mortality rates in the 2004
Alaskan groundfish fisheries, with recommendations for
monitoring in 2006 |
| The Bering Sea trawl fishery Prohibited Species
Donation Program: Results from 1998-2005 |
|
| Section 4 - Biological Research
| General I (pp. 179-214,
pdf 1.6 MB)
| Using otolith chemistry to
determine halibut nursery origin: an initial test of
concept |
| False annuli identification in juvenile halibut
ages one to four - progress report |
| Thermal habitat preferences of Pacific halibut
and the potential influence of hydrographic variability on a local
coastal fishery: 2005 project progress report |
| Deployment of the Seacat water column profiler
in 2005 |
| Analysis of halibut gonad staging project
update |
|
| General II (pp. 215-252, pdf
904KB)
| 2005 hook size and spacing experiment |
| Ambicoloration and flesh quality in Pacific
halibut, Hippoglossus stenolepis |
| Technique development for age determination of
the Pacific sleeper shark (Somniosus pacificus) |
| Homogeneity test for the Pacific sleeper shark
(Somniosus pacificus): Project update |
|
| Tagging (pp 253-306,
pdf 1.4 MB)
| Portside sampling for recovered PIT tags in
Pacific halibut |
| Tagging studies |
| Recoveries of double-tagged fish and PIT tag
loss rate |
| Possible causes of low PIT tag recovery rates
in 2004 |
| Assessing seasonal migration of adult Pacific
halibut along the Aleutian Chain using Pop-up Archival Transmitting
(PAT) tags |
| Using Pop-up Archival Transmitting (PAT) tags
to study seasonal migration timing in the Gulf of Alaska |
|
| Survey results and analysis (pp.
307-380, pdf 1.3 MB)
| 2005 Standardized stock assessment survey |
| Prior Hook Injuries: Results from
the 2005 IPHC SSA and NMFS surveys |
| Age distribution of Pacific halibut in IPHC
stock assessment setline surveys |
| Cruise report for the 2005 NMFS Bering Sea trawl survey |
| Size and age composition of Pacific halibut in
NMFS Bering Sea shelf trawl surveys |
| Cruise report for the 2005 NMFS Gulf of Alaska trawl survey |
| NMFS trawl survey abundance estimates,
distribution, and age composition of Pacific halibut in the Gulf of
Alaska |
|
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