APPENDIX V

Recovery Factors for Endangered Marine Mammals:
A Revised Decision Tree and Decision Matrix

After the working paper in Appendix IV was presented, the JSRG, along with other workshop participants, discussed other possible schemes for categorizing endangered species for the purpose of assigning a recovery factor.  Those discussions led to two new  possible schemes that were considered.  Changes from the decision tree presented in Appendix IV were proposed with the intent of improving the scheme.  However, there was no consensus at the workshop that either new scheme was adequate or acceptable.  These two schemes are presented here for the sake of future discussion, as a record of what was considered at the workshop.  Neither specific scheme was officially endorsed by the JSRG.

One discussion led to the consideration of a different format.  From this discussion, a decision matrix or table was created (Table V-1).  Another discussion led to consideration of changes that could be made to the decision tree presented in Appendix IV.  The resulting revised decision tree changed the order in which items were considered (Figure V-1).  These two schemes were used to categorize stocks, as done in Table IV-4.  Categorization by the two new schemes is presented in Table V-2.