Evaluation of Pinniped and Seabird Species as Possible 

 Indicators of Changes in the Abundance of Antarctic Krill 

 (K. A. Green Hammond, Ecosystem Modeling, Inc. ) 



The Convention on the Conservation of Antarctic Marine 

 Living Resources requires that harvesting of these resources 

 be managed so as to prevent the depletion of dependent as 

 well as harvested species and to maintain the basic structure 

 and dynamics of the Southern Ocean ecosystem. It would be 

 prohibitively costly and perhaps impossible to assess and 

 monitor the status of every species or population that could 

 be affected directly or indirectly by harvesting or related 

 activities. Therefore, one of the initial tasks of the 

 Commission and Scientific Committee established by the 

 Convention will be to determine which species, populations, 

 or population parameters are most likely to change in 

 direct or indirect response to harvesting and to design and 

 implement appropriate monitoring programs. To help facilitate 

 these determinations, the contractor is compiling and evaluating 

 available data on the demography and dynamics of pinniped 

 and seabird populations in the Antarctic and elsewhere to 

 determine whether one or more pinniped or seabird species 

 might serve as an indirect indicator of harvest-caused 

 changes in the size of Antarctic krill populations. The 

 project report is expected to be completed in the spring of 

 1983 and will be provided to the U.S. delegation to help 

 prepare for the next meetings of the Commission and Scientific 

 Committee . 



Mitigation of Marine Mammal-Fisheries Conflicts in 

 the Columbia River and Elsewhere 

 (National Marine Fisheries Service) 



During a Commission-sponsored workshop held in October 



1981, participants identified a number of measures that 

 might be useful for avoiding or mitigating marine mammal- 

 fisheries conflicts in the Columbia River and elsewhere. 

 However, there was not sufficient time or information available 

 to determine and describe the precise types of research and 

 monitoring programs needed to test and evaluate the possible 

 mitigation measures which were identified. Therefore, in 



1982, the Commission transferred funds to the National 

 Marine Fisheries Service to support development of a detailed 

 research and studies plan. The National Marine Fisheries 

 Service contracted with the Washington Department of Game to 

 develop the study plan which is expected to be completed 

 early in 1983. The Commission, in consultation with its 

 Committee of Scientific Advisors, will review the plan and, 

 as appropriate, recommend that it be adopted and implemented 

 by the National Marine Fisheries Service. 



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