Yep! If you select a gatherer there's a button under the job buttons that will initially say "All." If you click it you can cycle through the different resources.
In response to Cory's question, your heroes heal when they have less healing ability (i.e. heal 100) then missing health. So say your heal was 100, if you're missing 100 health, your hero will heal, whereas if you hero is missing 90 health, your heal won't proc. Was that helpful?
 "War Lands"){kind=icon}
 "UPGRADE COMPLETE!"){kind=icon}
 "Rogue Fable III"){kind=icon}
 "Idle Hero Tower Defense"){kind=icon}
 "Incremental Memory"){kind=icon}
 "A Castle For Trolls"){kind=icon}
 "Incremental Adventures"){kind=icon}
 "Magirune"){kind=icon}
Yep! If you select a gatherer there's a button under the job buttons that will initially say "All." If you click it you can cycle through the different resources.