MINUTES OF THE TECHNICAL SUBCOMMITTEE
OF THE
CANADA-UNITED STATES GROUNDFISH COMMITTEE
Thirty-Eighth Annual Meeting
May 6-8, 1997
Southwest Fisheries Science Center
Tiburon, California

 

I. CALL TO ORDER

1997-98 TSC Chair, Bill Barss welcomed everyone and thanked Alec MacCall and Tom Barnes for setting up the meeting. Barss called the 38th annual meeting of the TSC to order at 1315 on May 6, 1997.

II. APPOINTMENT OF SECRETARY

Dave Thomas, was appointed as recording secretary. Barss said that he would also provide draft minutes to Thomas. Mark Wilkins will be responsible for publishing the annual report.

III. INTRODUCTIONS

Introductions were made and an attendance list circulated (mailing list included in Attachment A). Cal Blood (IPHC), Jane Dicosimo (NPFMC), and Jim Glock (PFMC) were not able to attend the meeting, but provided reports for their agencies. Mark Saunders represented Bruce Turris on the Parent Committee.

Canada

Department of Fisheries and Oceans (DFO)
Mark Saunders, Pacific Biological Station (PBS), Nanaimo, BC
Diana Trager, Groundfish Management Unit, Vancouver, BC
Rob Kronlund, PBS, Nanaimo, BC

United States

National Marine Fisheries Service (NMFS)

Southwest Fisheries Science Center
Alec MacCall, Southwest Fisheries Science Center(SWFSC), Tiburon, CA
Pete Adams, SWFSC, Tiburon, CA
John Butler, SWFSC, La Jolla CA

Northwest Fisheries Science Center
Richard Methot, Northwest Fisheries Science Center (NWFSC), Seattle, WA

Alaska Fisheries Science Center
Mark Wilkins, Alaska Fisheries Science Center(AFSC), Seattle WA
Tom Wilderbuer, AFSC, Seattle WA
Dave Clausen, Auke Bay Laboratory, Juneau, AK

Alaska Department of Fish and Game (ADFG)
Tory O’Connell, Sitka, AK

Washington Department of Fish and Wildlife (WDFW)
Tom Jagielo, Olympia, WA

Oregon Department of Fish and Wildlife (ODFW)
Bill Barss, Newport, OR

California Department of Fish and Game (CDFG)
Dave Thomas, Menlo Park, CA
Tom Barnes, La Jolla, CA

North Pacific Fishery Management Council (NPFMC)
Not represented

Pacific Fishery Management Council (PFMC)
Not represented

Pacific States Marine Fisheries Commission (PSMFC)
Dave Hanson, Gladstone, OR
Stephen Phillips, Gladstone, OR

IV. APPROVAL OF 1996 REPORT

The following changes were made to the 1996 report:

The 1996 report was approved as amended.

V. APPROVAL OF 1997 AGENDA

The 1997 agenda was approved as presented by the Chair.

VI. WORKING GROUP REPORTS

A. Committee of Age Reading Experts (CARE)

Barss highlighted portions of the CARE report (Attachment B) provided by the new CARE chair, Cal Blood. Otolith exchanges were done on Pacific halibut between ADFG and IPHC, and on Pacific mackerel between CDFG and ODFW. The Cooperative Ageing Unit of ODFW/NWFSC met several times with AFSC staff in Seattle for training and exchange of sablefish test samples. Staff from CDFG and ODFW met in Eureka for a Dover sole workshop. A pelagic fish ageing workshop was held in Seattle and attended by staff from CDFG, ODFW, and WDFW.

Jagielo said that exchanges are very useful and that a CARE-sponsored exchange of lingcod spines between DFO, WDFW, and SWFSC (Tiburon) would be helpful to the lingcod assessment work.

Saunders asked about training of new sablefish agers. He noted that DFO has implemented the following new requirements for production agers: ageing of sablefish will not be assigned to those who infrequently age sablefish and a second, independent reading will be done on all otoliths initially aged under 15 years. Saunders would like DFO included in sablefish otolith exchanges.

Methot described the Cooperative Ageing Unit’s assignments and training. He reported hiring three new agers who will concentrate on sablefish, but will also age some Dover sole.

Wilkins reminded members that TSC has yet to receive the final report on the 1996 CARE meeting.

Three recommendations from CARE to the TSC were discussed. The first requested clarification of how stock assessment scientists and biometricians utilize data generated from precision testing. This information will be provided to the CARE by Methot. The other two concerned publication of the CARE manual and what agency might host a web site that could include, among other things, the ageing manual and threaded discussions. Saunders reported that the CARE manual is nearly done, but needs a little polishing, especially with regard to the photographs. He will provide copies to all agencies. Methot proposed that CARE be added to the PSMFC web site. Butler suggested that otolith images could be added. The support for both a TSC and CARE presence on the PSMFC web site was discussed.

B. Pacific Whiting Working Group

Saunders gave a verbal report on Pacific whiting. Saunders and Martin Dorn (NMFS, AFSC) are exchanging data for use in the 1997 assessment. Last year’s estimates on range of potential yield agreed on then upper end but disagreed on the lower end. The process to estimate yield is expected to change, with both Saunders and Dorn agreeing on yield estimates and thus providing the same technical work to their respective governments for review and possible revision. The result should be a higher level of coordination. Methot expressed support for a coordinated assessment that would result in one document for review.

TSC notes that formal negotiations between U.S. and Canada on Pacific whiting did not occur during 1996.

Research continues to determine an acceptable target strength. This is a contentious issue and researchers are meeting every 6 months.

C. Lingcod "Working Group"

Jagielo reported on the Lingcod Stock Assessment Workshop held March 20-21, 1997 in Olympia, WA. There was a good review of information on lingcod including modeling ideas. Both DFO and WDFW have aged data covering 15 years. Jagielo proposed that CARE be asked to include lingcod as a focus species and volunteered to prepare a set of structures for an ageing exchange between WDFW, DFO, and SWFSC-Tiburon.

O’Connell stated that ADFG continues to use cleared otoliths to age lingcod, rather than spines. The number of lingcod aged from Alaska is small at this time. She would like an exchange to include both otoliths and spines.

Jagielo said spines show that the size at age has decreased since the early 1980's. He would like to determine if this is the result of changes in fish growth or age determinations. He notes that WDFW lingcod ageing indicates a strong 1984 year class while DFO ageing shows a strong 1985 year class. These issues reflect the need for coordination of age reading criteria via CARE.

Saunders suggested that the TSC commend Jagielo for his interest in lingcod issues and his persistence in successfully hosting this productive workshop.

D. Yellowtail Rockfish Working Group

Saunders reported that WDFW and DFO are cooperating and developing new assessment models. They may be looking at a younger age composition. The Area 3C stock is seen by WDFW as having a low yield which could impact bycatch from the Pacific whiting fishery. Jagielo added that the WDFW assessment is being redone in advance of the normal three-year stock assessment cycle because of concerns about the stock’s status and the availability of new data. Barss reported that ODFW has increased their sampling of yellowtail rockfish bycatch in the whiting fishery.

E. Other

Sablefish Symposium

Wilkins reported that the galley proofs will be sent to authors within two weeks. He expects that the document will be published as a NMFS Technical Report and available by the end of this summer.

VII. OTHER TOPICS

A. Mackerel and Sardines

Barnes provided TSC with a handout on status of Pacific mackerel and Pacific sardine assessments. Since most of the assessment data comes from the southern California area, he is concerned that the assessments are giving an incomplete picture of the status of the stock(s). He would like to know if the northern fish are part of one coastwide stock or a separate stock. Pacific sardine biomass is rapidly increasing at a rate of about 20% to 30% per year. At this rate of increase sardines could return to their historic level of high abundance in 10 years. In contrast to sardine, Pacific mackerel stocks have declined since the 1980s. Barnes sees the need for cooperative work in other areas besides the ageing work currently sponsored by PSMFC. He would like to see increased sampling of sardines from the northern area, so that biological data such as growth rate and maturity could be examined to help determine stock structure. Coastwide icthyoplankton surveys would also be very useful.

Butler spoke briefly about the Lidar system being used to estimate adult abundance. This laser system can be used from an airplane and is being explored as a survey tool for coastal pelagic species. Advantages are that a large amount of trackline can be covered in a short period of time and targets are discernable in the upper 30 meters of the water column. Disadvantages are limitations due to low cloud cover and difficulties in species identification.

Fecundity at age is not well documented for sardines and it seems to vary with age and size. This is an important issue in relating spawning biomass to total biomass. Butler said that the continuous underway fish egg sampling pump (CUFES) is used to estimate daily egg production . The next survey will be underway in 1999. It would be desirable to survey egg production from a larger survey area and there was some discussion of opportunistically using the CUFES on planned NMFS research cruises such as the 1998 West Coast hydroacoustic survey of Pacific whiting. Sardine usually spawn in about 14 degree water during spring in the California Current.

Saunders said that Pacific mackerel moved into their area in 1992-93 with the El Niño and stayed. Sardines are taken under experimental gear permits first issued in 1997, which required an observer. Only 10% of the estimated stock may be taken and only by purse seine. Sardine maturity data is not currently being collected by DFO. Saunders provided a recent DFO publication on sardine.

Barnes said that the California mackerel fishery in recent years is probably less than 5% jack mackerel and over 95% Pacific mackerel. This is in contrast to the late 1960s and early 1970s when young jack mackerel dominated the fishery. MacCall suggested that TSC recommend that the US and Mexico pressure NMFS to authorize the pelagics FMP and study transboundary pelagic stocks. Butler agreed on the importance of having both Mexico and Canada involved.

TSC discussed continuing informal presentations and reporting on mackerel and sardines or formally adding these species. Inclusion has helped exchange information and including otolith images in a web site or manual could be helpful. These are transboundary species and there are some connections with traditional groundfish species and harvest methods. It was decided to keep discussions on mackerel and sardine informal at this point in time.

B. Pacific Cod

DFO and WDFW met in Vancouver in 1996 and have set another meeting for the summer of 1997.

VIII. REVIEW OF AGENCY GROUNDFISH RESEARCH, ASSESSMENT AND MANAGEMENT

A. Agency Overviews

Thomas reported that California will commit to TSC fully in the future as long as meetings are held withing reasonable distances.

B. Multispecies Studies

O’Connell described a growing utilization of skate and shark bycatch in Alaska. A developing fisheries policy meeting was held in April where a concern over a growing salmon shark fishery in Prince William Sound was expressed.

Methot reported that landings of Pacific grenadiers are increasing for both trawl and hook-and-line gear primarily off California. The demand is mostly from the Los Angeles fresh fish market. There was some concerned discussion over reports that there may be some catch "shuffling" of reported catch to limited entry fishers from open access permits involving thornyhead and grenadier catches. This raised some serious concerns about the quality of the fish ticket data base.

C. By Species

1. Pacific cod

O’Connell reported about a Board of Fish action which allocates 25% of the TAC in the central Gulf of Alaska for harvest in state waters (inside 3 mi) after the federal fishery. Harvest would be by pot and jig boats and would open two weeks after closure of the federal fishery. This is a difficult issue between the State of Alaska and the NPFMC. Hanson raised the point that this involves issues of localized depletion and enforcement problems.

2. Shelf Rockfish

Phillips thought another nearshore rockfish workshop was overdue and distributed PSMFC’s nearshore rockfish proposal. S-K Funding for the proposal had been denied, however the project did receive some Wallop-Breaux monies.

Phillips expressed the need for better coastwide charter boat data and suggested a logbook be implemented. Barnes reminded the group that California has required a charter boat logbook for many years and has good compliance. Phillips said he will talk with charter boat operators and member agencies about the possibility of a logbook in the other states immediately. O’Connell suggested consulting with Barry Bracken regarding logbooks, since Barry is now a Alaska charter boat representative. Thomas said that California needs better information from the private skiff fishery.

Phillips initiated a discussion on the importance of GIS mapping of nearshore habitat and suggested that more money for this may become available with the concerns expressed for habitat in the amended Magnuson-Stevens Act.

O’Connell described legislation that would establish a four year moratorium on new commercial entries into the bottomfish fishery inside Alaska state waters. They are moving toward limited entry in the demersal shelf rockfish (DSR) fishery.

Alaska will soon bring before the NPFMC a proposal to remove black rockfish and nearshore dusky rockfish from the FMP so they could be solely managed by State.

3. Slope Rockfish

Clausen reported that, when results of the 1996 NMFS Gulf of Alaska bottom trawl survey are considered, the goal of rebuilding Pacific ocean perch stocks in the Gulf has been achieved. Methot asked whether DFO has seen a corresponding increase in POP abundance off Canada, since there has been no indication of an increase off Washington, Oregon, and California. Kronlund reported that the DFO assessment concludes that POP is at "average historical levels" and showing moderate growth.

Clausen noted that there has been a shift in the Alaska slope rockfish fishery from factory trawlers to smaller boats delivering shoreside and shipping product direct express to Japan, as well as some development of domestic markets.

4. Thornyheads

Clausen reported on a mitochondrial DNA study collecting samples of shortspine thornyhead coastwide (40 fish/INPFC area) to investigate stock structure.

5. Sablefish

O’Connell reported that ADFG has modified their industry longline survey design to be compatible with NMFS survey methodology and that the Clarence Strait survey is about to start. She also said ADFG is concerned about using external tags to mark fish and is investigating other techniques that would keep fishermen from biasing catch information by purposely not turning tags in. A Chatham Strait tagging project is being designed for August. O’Connell said the sablefish quota for state waters is now divided equally between longline and pot gear and each gear will have separate seasons.

Thomas and Hanson reported that PFMC was forced to revise its recommended 1997 fixed-gear management strategy because of disapproval by NMFS. Last October the Council recommended a 3-week season with equal cumulative limits for the 1997 fishery. However NMFS determined that the Council-recommended management measure would be classified as an individual quota program and the reauthorized Magnuson-Stevens Act prohibits the recommendation or implementation of new IQ programs prior to October 1, 2000. As a consequence, PFMC reduced the length of season to ten days in order to insure that not all vessels would reach the cumulative limit.

Clausen described a voluntary logbook for line fishermen that is similar to the existing halibut logbook. The program, started at the request of fishermen, will be managed by the Auke Bay office.

Methot described NMFS sablefish projects in progress or proposed by the staff at Newport. They include studies of trawl bycatch mortality ("cage technology") and a study of the rates of diffusion from shallow to deep water using tags. There is evidence that deep-dwelling fish are not as fecund as those in shallow water. The intent is to incorporate new information in future stocks assessments. Paul Crone is re-assessing sablefish for 1997. Methot also reported that sablefish ageing production has increased. Shelved sablefish are being aged by the Cooperative Ageing Unit in Newport, which has caught up with a considerable backlog.

Methot reported that industry has shown strong interest in cooperative projects. Possible projects could include biological data on larger, deepwater sablefish before they are caught in the fixed-gear fishery. Also industry could collect biological data on fish before they are dressed and sorted. Methot will also be exploring the feasibility of using smaller coastal trawlers, with maybe two biologists on board, to do survey work.

Methot was asked if there are any plans to resurrect the pot survey. Methot responded that there are no current plans and catchability was still an issue.

O’Connell and Methot had a discussion of efficiency of pot vs. longline.

Saunders said that in very deep water pots work better than longline gear for catching sablefish.

Saunders reported on an assessment workshop held in Canada (contracted by University of Washington) that reviewed fishery stock assessment techniques, survey techniques, ageing problems, and data sources with an emphasis on British Columbia and Alaska work. Results of the workshop will be used in developing a new age-structured model that incorporates depth stratification information and some tagging information. DFO expressed an interest in exchanging data for use in the model. Methot said that the current synthesis model can include tagging information. Clausen believes this type of workshop should have been sponsored by TSC. Saunders replied that it was an industry supported workshop. Methot agreed with Clausen suggesting that a sablefish working group be established.

6. Flatfish

Tom Wilderbuer reported that Greenland turbot may be tagged during this summer’s NMFS longline survey.

Wilkins discussed work by AFSC scientists investigating flatfish escapement under the footrope of survey trawls. These investiations are using video cameras attached to the trawl and auxilliary bag trawls mounted below and behind the main trawl’s footrope to capture fish escaping the main trawl. Work this summer will concentrate on the effect of lights used to illuminate the field for the video camera.

Methot reported some effort looking at logbooks and other fishery data for flatfish.

Saunders raised a question regarding Dover sole, which MacCall has found to be planktonic for as long as their first 2 years. To what degree does this affect their movement between US and Canadian waters? Do recruits move a lot?

7. Lingcod

Barss and Thomas reported that Fishermen’s Marketing Association has provided funds to hire port samplers in Astoria and Eureka to collect information on lingcod.

10. Walleye Pollock

O’Connell raised a concern about a small pollock fishery in Prince William Sound and whether the information and the catch is being included in the Gulf of Alaska stock assessment which gets conducted by NMFS.

Saunders reported that pollock were seen during a February 1997 survey in the Straits of Georgia for the first time in five years.

D. Other Related Studies

E. Other Items

Hanson called members’ attention to (and distributed of) an internet page describing The Puget Sound/Georgia Basin International Task Force. It features a description of its Marine Science Panel’s recommendations for action in the shared waters of Washington and British Columbia. Hanson suggested that some of the transboundary issues that TSC deals with could be used to introduce our function to this body.

Jagielo reported that WDFW prepared the bathymetric information for a transboundary sampling project by the Task Force and can provide information on the location of their samples via the WDFW GIS system. Saunder followed up on this with the suggestion that future agency reports include brief descriptions GIS data sets each agency has developed.

Clausen described plans for a couple of submersible studies that will be conducted by ABL staff, including a study of the effects of bottom trawling on various habitats at 1000 ft depth (coral forest and other habitats) in July 1997 and a study of longline catch of shortraker and rougheye rockfish and sablefish in August 1997.

Barss adjourned the meeting for the day at 1700. The meeting was reconvened at 0800 Wednesday, May 8.

IX. PROGRESS ON 1996 RECOMMENDATIONS

A. From the TSC to Itself

  1. A successful lingcod stock assessment workshop was conducted in March 1997 and the minutes are attached (Attachment C).

  2. Some agencies provided information and examples of ongoing logbook programs, and additional agencies are planning to contribute. Examples of logbooks are included as Attachment D.

  3. Connell provided a brief report regarding the evaluation of age determination using lingcod otoliths compared to spines.

  4. Methot plans to attend the next CARE meeting to discuss how stock assessment authors use ageing precision information in their models and assessments.

B. From the Parent Committee to the TSC

  1. Saunders has a draft of the 1993 Report of the Annual Meeting which he will complete and distribute in 1997.
  2. The TSC will continue to take steps to improve communication among members and agencies.
  3. It was agreed that we would return to the meeting schedule discussed and adopted during the 1994 meeting (refer to Report of the 1994 Annual Meeting). These issues addressed coordination of the agenda, a conference call to discuss the agenda 30 days prior to the meeting to assemble a list of "hot" issues prior to the meeting, and to ensure agency reports are distributed among members a month prior to the meeting. All members present agreed to have draft agency reports done and distributed to all other members by April 1. A conference call to discuss topics for the agenda will be held on or about April 16.

C. From CARE to the TSC

  1. Methot plans to attend the biennial CARE meeting in the spring of 1998 to address the issues referred to in this recommendation.

  2. Saunders brought several copies of the current draft version of the CARE Ageing Manual to the meeting and distributed one or two to each agency.

X. 1997 TSC RECOMMENDATIONS

A. From the TSC to Itself

  1. The TSC requests that each agency include short descriptions on the following topics in their 1998 report:

    a. New logbook programs including details on

    1) Status of collection

    2) Stage of data entry (years entered and backlog)

b. GIS programs including details on:

1) Available base maps and baseline data

2) Software

3) Bathymetric data source

  • The TSC notes that separate Canadian and U.S. assessments are conducted for transboundary stocks of yellowtail and lingcod. The TSC recommends that authors of these assessments produce joint reports to the TSC summarizing the basis for any discrepancies in estimates of stock status an/or yield options between the two assessments. Recommendations for joint research that could resolve issues should be included.

  • The TSC recommends that it continue to review and support work on mackerel and Pacific sardines for the next two years. It further recommends review of its level of continued involvement with these species at its 1999 meeting.

  • The TSC recommends that agency reports be drafted and distributed to other agency representatives by April 1, and that a list of topics to be considered for addition to the annual meeting be included with the report. The TSC also recommends that its Chair alert members of their report deadline on or about the first of March, and that PSMFC initiate a telephone conference with TSC representatives on or about April 16, to discuss the agenda and arrangements for the annual TSC meeting. It is recommended that prior to the 1998 meting, that the TSC develop a report format for CARE age-structure exchanges.
  • B. TSC to Parent Committee

    1. The TSC recommends that the Parent Committee investigates the possibility of having PSMFC establish and maintain CARE and TSC home pages under the PSMFC web site. The CARE page will require technology and software to post and retrieve high quality images.

    2. The TSC suggests that a letter be written by the parent committee to the Puget Sound/Georgia Basin International Task Force explaining TSC’s mission, objectives, and terms of reference.

    3. The TSC notes that the combined Canadian/US harvest of hake continues to exceed the adopted yield option and recommends to the Parent Committee that the bilateral negotiations be encouraged to arrive at a solution.

    4. TSC concerns with jack mackerel, Pacific (chub) mackerel and Pacific sardine include fishery development and possible adverse maltispecies interactions in the Washington-British Columbia area. These issues demonstrate that the international/transboundry nature of these resources spans Canada, the United States, and also Mexico. National Marine Fisheries Services’ present policy of relying on the west coast states individually to manage these species fails to address the scope of the management problem and need for international coordination. The TSC recommends that the Parent Committee consider urging the U.S. NMFS to support development and adoption of a multispecies FMP including mackerels and Pacific sardine.

    5. The TSC observes a growing need for synoptic oceanographic data. Current efforts appear to be poorly coordinated and inadequate in both spatial coverage and frequency of observation. The TSC recommends that the Parent Committee pursue development of a formal coordinated physical and biological oceanographic monitoring program for the west coast of North America.

    6. The TSC requests that the Parent Committee continue to pursue support for separate catch monitoring, research, and management initiatives for nearshore rockfish.

    7. The TSC requests that the parent committee draft a letter to the PFMC and the PacFIN Data Committee stating concern regarding the impact of restrictive single species trip limits on discard in multi-species fisheries. For example, the recent, unrestricted increase in the grenadier catch by central California hook and line fishermen likely results in high levels of sablefish and thornyhead bycatch with unknown levels of discard. Furthermore, these single species restrictions on landed catch create an incentive for misrepresentation of catch on fish landing receipts and a high enforcement burden.

    C. TSC to CARE

    1. The TSC recommends that CARE add lingcod to the list of species to be reviewed at its spring, 1998 meeting. Inter-agency calibration is needed for stock assessment work. which utilizes age data from WDFW, NMFS-Tiburon, and DFO. WDFW has agreed to take the lead in coordinating a 300 fish age structure exchange among these agencies and will summarize the between-lab age reading results.

    2. The CARE submitted a preliminary report of its April 30-May 3, 1995, Biennial Meeting to the 1996 TSC annual meeting. The TSC appreciated this timely report, submitted within a week of the CARE meeting. To date, however, the TSC has not received a final report of the 1995 CARE Biennial Meeting and would appreciate receiving one as soon as it becomes available.

    XI. SCHEDULE AND LOCATION OF NEXT MEETING

    The 1998 annual meeting will be held on May 5-7 in Olympia, Washington. Tom Jagielo will host the meeting and act as the secretary.

    XII. ADJOURNMENT

    The meeting was adjourned at 1010 on May 7, 1996.