 | | 1993 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.
(note: blank pages have been omitted)
 | The Fishery (pp. 1-57, pdf
2.1 MB)
 | 1993 Commercial fishery |
| Sport fishery |
| Allocation of Pacific halibut among sport and
commercial fisheries in Alaska - Has the time come? |
| Wastage in the Pacific halibut commercial fishery |
| Commercial catch sampling |
| Precision of British Columbia sport catch estimates
based on postal surveys of residents and visitors |
| Improvements in Canadian sport harvest and
biological data |
| Personal use in Alaska |
| Age composition and size at age of the commercial
fishery for 1993 |
|
| Population Assessment (pp.
59-131, pdf 1.9 MB)
| Stock Assessment
 | Population assessment, 1993 |
| Population assessment, 1993 Technical
supplement |
| Area 2A Assessment supplement |
|
| Data Analysis and Development (pp.
133-165, pdf 1.2 MB)
| Spatial analysis of halibut CPUE |
| Effects of IVQ on CPUE |
| Alternative sampling grids for the setline
surveys |
| Progress on regularizing IPHC historical data |
| Implications of winter fishing for Pacific
halibut |
|
|
| Bycatch (pp. 167-231, pdf 2.3
MB)
| Byatch and Mortality
| The 1993 Alaska groundfish fishery:
Groundfish catches, halibut bycatches, and bycatch rates |
| Incidental catch and mortality of Pacific
halibut: 1962-1993 |
|
| Bycatch management
| Status of bycatch management planning |
| A summary of observer data collected in 1993 in
the halibut (Hippoglossus stenolepis) bycatch study in
British Columbia |
| Review of rules and amendments regulating
Alaskan groundfish fisheries |
|
| Research and Analysis (pp.
233-297, pdf 2.1 MB)
| Pacific halibut discard mortality rates in the
1990-1992 groundfish fisheries off Alaska, with recommendations for
1994 |
| Recommendations for 1994 pre-season assumed
discard mortality rates for halibut bycatch |
| Estimates of Pacific halibut bycatch mortality
in U.S. Domestic fisheries in IPHC Area 2A |
| Longline tagging for discard mortality rates |
| Effects of sorting technique on survival of
halibut discarded from a factory trawler |
| Spatial and temporal variation of Pacific
halibut bycatch in Pacific cod domestic fisheries in the Bering Sea
and losses inflicted to the halibut fishery |
|
|
| Section 4 - Biological Research (pp.
299-359, pdf 1.6 MB)
| General
| Parasites and Pacific halibut |
| Comparison of surface and break/burn age
readings |
| Documentation and estimation of bottom and
habitat areas for Pacific halibut in Area 2A |
|
| Surveys
| 1993 Setline grid survey |
| Results of the 1993 NMFS Bering Sea trawl
survey |
|
| Tagging studies
| Tagging studies |
| Experiment with tagging of sport-caught halibut |
| Sample size for longline discard survival
estimates |
|
|
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