Complex sentence: In the limestone depressions of cypress swamps, alligator holes tend to be large and deep while those in marl prairies and rocky glades are usually small and shallow and those in peat depressions of ridge and slough wetlands are more variable.
Split into simpler sentences: In the limestone depressions of cypress swamps, alligator holes tend to be large and deep. Those in marl prairies and rocky glades are usually small and shallow and those in peat depressions of ridge and slough wetlands are more variable.