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Steller Sea Lion Research:  Hypotheses for Population Decline

D1-2
Factor 5: Diseases (D)

The following key questions related to factors causing or contributing to the decline of Steller sea lions are structured as follows: [Specific type of effect] [Reason for the decline] [Mechanism].

 D1: Have a single or combination of endemic or new epidemic diseases resulted in decreased survival or births of sea lions through direct mortality?

D2: Have a single or combination of endemic or new epidemic diseases resulted in decreased survival or births of sea lions through reduction of individual fitness?