OAI Harvester Error log?

Does the OAI Harvester write errors to the main Omeka error log? By default error logging is still off on my install, but before I turned it on, I'd like to know if I'll find plugin errors there or somewhere else.

The OAI Harvester has its own status logging feature that's available in an individual harvest's status page. This records errors and notices relating directly to the harvesting process. The Omeka error log will still record errors that are Omeka specific, but that probably won't be necessary for testing the harvester.