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2001 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
538K) |
| Section 1 - Contents (pp.
1-6, pdf 444K)
|
| IPHC research program: Review
of 2001 projects and proposals for 2002 (pp. 7-40, pdf 563K) |
| Section 2 - The Fishery
 | Removals (pp. 41-102, pdf
1.52MB)
 | 2001 Commercial fishery and regulation changes |
| Further examination of biological issues
concerning an extended commercial fishing season |
| 2001 Sport fishery |
| Wastage in the 2001 Pacific halibut fishery |
| Estimates of personal use harvest for 2001 |
| Retention of sublegal halibut in the Area 4E
CDQ fishery: Results from 2001 |
| History of Area 2 fisheries, management and
assessments |
|
| Sampling and Analysis
(pp. 103-118, pdf 495K)
| Commercial catch sampling |
| Age distribution of the commercial halibut catch
for 2001 |
|
|
| Section 3a - Population Assessment
(pp. 119-196, pdf 1.1MB)
| Assessment of the Pacific halibut stock at the end
of 2001 |
| Evaluation of the Pacific halibut harvest policy
and medium term harvest projections |
| Effects of climate, stock size, and region on
recruitment and growth of Pacific halibut |
| Comparison of fixed-hook and snap-hook CPUE |
|
| Section 3b - Bycatch (pp.
197-246, pdf 2.1MB)
| Incidental catch and mortality of Pacific halibut,
1962-2001 |
| The Bering Sea trawl fishery Prohibited Species
Donation (PSD) program: Results from 1998-2001 |
| Pacific halibut discard mortality rates in the
1990-2000 Alaskan groundfish fisheries, with recommendations for
monitoring in 2002 |
| Development and testing of halibut excluders for
Alaska cod trawling |
|
| Section 4 - Biological Research
| General (pp. 247-298,
pdf 857K)
| Deployment of the Seacat water column profiler
in 2001 |
| Chalky halibut investigations in 2001 |
| Variance comparison for surface and
break-and-burn ages |
| Seabird interactions with halibut longline
gear: Sources of variation in abundance and behavior |
| Development of a Geographic Information System |
|
| Tagging (pp 299-332,
pdf 796K)
| Pilot studies on the use of PIT tags in Pacific
halibut |
| Analyzing mark-recapture data for Pacific
halibut with a state space model |
| Tagging studies |
|
| Survey Results (pp.
333-376, pdf 1.35MB)
| 2001 Standardized stock assessment survey |
| Cruise report for the 2001 NMFS Gulf of Alaska trawl
survey |
| Cruise report for the 2001 NMFS Bering Sea trawl survey |
| Prior Hook Injuries (PHI): Results from
the 2001 IPHC SSA surveys and NMFS trawl surveys |
|
| Survey Analysis (pp.
377-428, pdf 1.48MB)
| Comparison of setline survey CPUE in standard
survey subareas and entire regulatory areas |
| NMFS trawl survey abundance estimates,
distribution, and age composition of Pacific halibut in the Gulf of
Alaska |
| Size and age composition of Pacific halibut in
NMFS Bering Sea shelf trawl surveys |
| Density of legal-sized halibut in the eastern
Bering Sea and coastwide distribution of exploitable biomass |
| Morphometric observations made on the 2001 Gulf
of Alaska and Bering Sea NMFS trawl surveys |
| The elusive 82-cm
halibut: Measurement variation in IPHC setline surveys
(pp. 429-450, pdf 602K) |
|
|
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