Is there any difference between the two terms 'often' and 'oftentimes'? They seem to be used interchangeably but is one more appropriate in certain situations than others? Is 'oftentimes' an older term that is commonly replaced by 'often' nowadays?
Consider this sentence:
Physiological tolerances can be measured indirectly by quantifying species’ occurrences along environmental axes (citation), which is often the only way such information can be recorded for large numbers of species.
Physiological tolerances can be measured indirectly by quantifying species’ occurrences along environmental axes (citation), which is oftentimes the only way such information can be recorded for large numbers of species.