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1999 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.
 | Section 1 - Contents
|
| Section 2 - The Fishery
 | Removals (pp. 27-68, pdf
688K)
 | 1999 Commercial fishery and regulation changes |
| 1999 Sport fishery |
| Wastage in the 1999 Pacific halibut fishery |
| Estimates of personal use for 1999 |
| Retention of sublegal halibut in the Area 4E
CDQ fishery |
| Preliminary estimates of Pacific halibut imported to North America from the
western Pacific Ocean |
|
| Sampling and Analysis
(pp. 69-106, pdf 520K)
| Commercial catch sampling |
| Age composition of the commercial halibut catch
for 1999 |
| Impacts of an extension to the IPHC commercial
fishing season
| Part I. Biological issues |
| Part II. Report from the interagency work group
meeting on the implications of extending the halibut season |
|
| New estimates of the sport catch of Pacific halibut in Canada
based on the DFO survey of recreational fishing in
Canada |
| Seabird observations and bycatch reported by fishermen to IPHC
samplers in Alaskan and Canadian ports in 1999 |
|
| Population Assessment
(pp. 139-158, pdf 743K)
| Assessment of the Pacific
halibut stock in 1999
(pp. 107-138, pdf 393K) |
| Estimates of reductions in halibut recruitment
due to bycatch |
| Alternative methods of smoothing mean weight at
age |
| Bayesian approaches to the analysis of uncertainty in the
stock assessment of Pacific halibut |
|
|
| Section 3 - Bycatch
| Catch and Mortality (pp.
159-190, pdf 436K)
| Incidental catch and mortality of Pacific halibut, 1962-1999 |
| Results of the 1998 and 1999 Bering Sea trawl fishery's Prohibited Species Donation
(PSD) program |
| The 1999 groundfish fishery off Alaska: Groundfish
catches, halibut bycatches, and other information |
| Changes to halibut bycatch management in 1999 |
|
| Research and Analysis
(pp. 191-246, pdf 667K)
| Pacific halibut Discard Mortality Rates (DMRs)
in the 1990-1998 Alaskan groundfish fisheries, with recommendations
for monitoring in 2000 |
| Development of a dichotomous key for determining
viability of Pacific halibut |
| Tests of flexible halibut excluders for trawl groundfish
fisheries |
|
|
| Section 4 - Biological Research
| General (pp. 247-296,
pdf 1.1M)
| Halibut, climate and fisheries oceanography |
| 1999 Chalky fish study |
| Stable isotope analysis of Pacific halibut otoliths |
| Comparison of break-and-burn and break-and-bake
aging techniques on halibut otoliths |
| Halibut otolith exchanges between the IPHC and
Alaska Department of Fish and Game, 1991-1998 |
|
| Survey Results (pp.
337-362, pdf 1.5M)
| 1999 Standardized stock
assessment survey (pp. 297-336, pdf 1.3M) |
| Cruise report for the 1999 NMFS Bering Sea trawl
survey |
| Cruise report for the 1999 NMFS Gulf trawl survey |
| Catalog of IPHC setline survey data, 1963-1999 |
| Prior Hook Injuries (PHI): Results from
the 1999 Surveys |
|
| Experimental Fishing
Projects and Tagging (pp. 363-384, pdf 5.1M)
| 1998-99 Experimental fishing - a winter/spring
comparison of bait size and type |
| Grid survey design experiment |
| Tagging studies |
| Sport tagging program |
|
|
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