Annual Report 2008

   

    
 

  Contents  Introduction  EECM  Tripartite Meeting  |  RPCM  16th Annual Meeting BASIS Symposium  |  People & Events  |  Appendices 
 

     

 
 
»  EECM
 
 
1. Time and Place of the Meeting
2. Participants
3. Information from CSRS
4. Evaluation of Results of
    Enforcement Activities
5. Cooperation
6. Recovery of Driftnets
7. Other Business
 
 3. Information from the CSRS
   
 
S. Urawa, Deputy Director of the NPAFC presented scientific information relevant to help enforcement activities regarding 2008 salmon migration patterns and the areas possible for illegal activities.  J. Irvine of Fisheries and Oceans Canada was also present to answer any scientific questions.

The United States asked to what degree sea surface temperature is an effective proxy for temperatures throughout the water column.  S. Urawa acknowledged that the surface temperature cannot be relied on particularly during the summer season because there are indeed areas of cold water inversion under the surface.  However, salmon are typically found between 0 to 50m in depth, so there is a correlation of sea surface and sub-surface temperatures in this depth range.  Additionally, remote sensing [satellite imaging] is capable only of revealing surface temperatures, so this is the best available data for planning enforcement operations.

J. Irvine of Canada noted that there can be significant variance between surface and sub-surface temperatures, and that oceanographers are working on providing improved sub-surface temperature data.

It was questioned whether there are depth restrictions for salmon, and S. Urawa indicated that different species prefer different depths.  Depth varies by species, season and time of day.

The United States requested further information on water sampling methods for stock identification of confiscated salmon so that USCG Kodiak Fisheries Training Center will be able to train and employ staff for sample collection.  S. Urawa responded that NPAFC Stock ID Working Group may be able to compile a “user’s manual” of applicable information.  If requested, the working group may be able to discuss at the next RPCM to suggest to create a manual for collecting samples.

Canada informed the committee that Canadian aircraft occasionally drop bathymetric temperature devices, which may be employed to contribute to this data collection effort.

 

 

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